1 mbed TLS ChangeLog (Sorted per branch, date)
3 = mbed TLS 2.18.1 branch released 2019-07-12
6 * Fix build failure when building with mingw on Windows by including
7 stdarg.h where needed. Fixes #2656.
10 * Enable building of Mbed TLS as a CMake subproject. Suggested and fixed by
11 Ashley Duncan in #2609.
13 = mbed TLS 2.18.0 branch released 2019-06-11
16 * Add the Any Policy certificate policy oid, as defined in
17 rfc 5280 section 4.2.1.4.
18 * It is now possible to use NIST key wrap mode via the mbedtls_cipher API.
19 Contributed by Jack Lloyd and Fortanix Inc.
20 * Add the Wi-SUN Field Area Network (FAN) device extended key usage.
21 * Add the oid certificate policy x509 extension.
22 * It is now possible to perform RSA PKCS v1.5 signatures with RIPEMD-160 digest.
23 Contributed by Jack Lloyd and Fortanix Inc.
24 * Extend the MBEDTLS_SSL_EXPORT_KEYS to export the handshake randbytes,
26 * Add public API for tls-prf function, according to requested enum.
27 * Add support for parsing otherName entries in the Subject Alternative Name
28 X.509 certificate extension, specifically type hardware module name,
29 as defined in RFC 4108 section 5.
30 * Add support for parsing certificate policies extension, as defined in
31 RFC 5280 section 4.2.1.4. Currently, only the "Any Policy" policy is
33 * List all SAN types in the subject_alt_names field of the certificate.
35 * Add support for draft-05 of the Connection ID extension, as specified
36 in https://tools.ietf.org/html/draft-ietf-tls-dtls-connection-id-05.
37 The Connection ID extension allows to keep DTLS connections beyond the
38 lifetime of the underlying transport by adding a connection identifier
39 to the DTLS record header. This identifier can be used to associated an
40 incoming record with the correct connection data even after the peer has
41 changed its IP or port. The feature is enabled at compile-time by setting
42 MBEDTLS_SSL_DTLS_CONNECTION_ID (disabled by default), and at run-time
43 through the new APIs mbedtls_ssl_conf_cid() and mbedtls_ssl_set_cid().
46 * Fix private key DER output in the key_app_writer example. File contents
47 were shifted by one byte, creating an invalid ASN.1 tag. Fixed by
48 Christian Walther in #2239.
49 * Fix potential memory leak in X.509 self test. Found and fixed by
51 * Reduce stack usage of hkdf tests. Fixes #2195.
52 * Fix 1-byte buffer overflow in mbedtls_mpi_write_string() when
53 used with negative inputs. Found by Guido Vranken in #2404. Credit to
55 * Fix bugs in the AEAD test suite which would be exposed by ciphers which
56 either used both encrypt and decrypt key schedules, or which perform padding.
57 GCM and CCM were not affected. Fixed by Jack Lloyd.
58 * Fix incorrect default port number in ssl_mail_client example's usage.
59 Found and fixed by irwir. #2337
60 * Add psa_util.h to test/cpp_dummy_build to fix build_default_make_gcc_and_cxx.
61 Fixed by Peter Kolbus (Garmin). #2579
62 * Add missing parentheses around parameters in the definition of the
63 public macro MBEDTLS_X509_ID_FLAG. This could lead to invalid evaluation
64 in case operators binding less strongly than subtraction were used
66 * Add a check for MBEDTLS_X509_CRL_PARSE_C in ssl_server2, guarding the crl
67 sni entry parameter. Reported by inestlerode in #560.
68 * Set the next sequence of the subject_alt_name to NULL when deleting
69 sequence on failure. Found and fix suggested by Philippe Antoine.
73 * Extend the MBEDTLS_SSL_EXPORT_KEYS to export the handshake randbytes,
75 * Add public API for tls-prf function, according to requested enum.
78 * Server's RSA certificate in certs.c was SHA-1 signed. In the default
79 mbedTLS configuration only SHA-2 signed certificates are accepted.
80 This certificate is used in the demo server programs, which lead the
81 client programs to fail at the peer's certificate verification
82 due to an unacceptable hash signature. The certificate has been
83 updated to one that is SHA-256 signed. Fix contributed by
85 * Return from various debugging routines immediately if the
86 provided SSL context is unset.
87 * Remove dead code from bignum.c in the default configuration.
88 Found by Coverity, reported and fixed by Peter Kolbus (Garmin). Fixes #2309.
89 * Add test for minimal value of MBEDTLS_MPI_WINDOW_SIZE to all.sh.
90 Contributed by Peter Kolbus (Garmin).
91 * Change wording in the `mbedtls_ssl_conf_max_frag_len()`'s documentation to
92 improve clarity. Fixes #2258.
94 = mbed TLS 2.17.0 branch released 2019-03-19
97 * Add a new X.509 API call `mbedtls_x509_parse_der_nocopy()`
98 which allows copy-less parsing of DER encoded X.509 CRTs,
99 at the cost of additional lifetime constraints on the input
100 buffer, but at the benefit of reduced RAM consumption.
101 * Add a new function mbedtls_asn1_write_named_bitstring() to write ASN.1
102 named bitstring in DER as required by RFC 5280 Appendix B.
103 * Add MBEDTLS_REMOVE_3DES_CIPHERSUITES to allow removing 3DES ciphersuites
104 from the default list (enabled by default). See
105 https://sweet32.info/SWEET32_CCS16.pdf.
108 * Add a new X.509 API call `mbedtls_x509_parse_der_nocopy()`.
109 See the Features section for more information.
110 * Allow to opt in to the removal the API mbedtls_ssl_get_peer_cert()
111 for the benefit of saving RAM, by disabling the new compile-time
112 option MBEDTLS_SSL_KEEP_PEER_CERTIFICATE (enabled by default for
113 API stability). Disabling this option makes mbedtls_ssl_get_peer_cert()
114 always return NULL, and removes the peer_cert field from the
115 mbedtls_ssl_session structure which otherwise stores the peer's
119 * Make mbedtls_ecdh_get_params return an error if the second key
120 belongs to a different group from the first. Before, if an application
121 passed keys that belonged to different group, the first key's data was
122 interpreted according to the second group, which could lead to either
123 an error or a meaningless output from mbedtls_ecdh_get_params. In the
124 latter case, this could expose at most 5 bits of the private key.
127 * Fix a compilation issue with mbedtls_ecp_restart_ctx not being defined
128 when MBEDTLS_ECP_ALT is defined. Reported by jwhui. Fixes #2242.
129 * Run the AD too long test only if MBEDTLS_CCM_ALT is not defined.
130 Raised as a comment in #1996.
131 * Reduce the stack consumption of mbedtls_mpi_fill_random() which could
132 previously lead to a stack overflow on constrained targets.
133 * Add `MBEDTLS_SELF_TEST` for the mbedtls_self_test functions
134 in the header files, which missed the precompilation check. #971
135 * Fix returning the value 1 when mbedtls_ecdsa_genkey failed.
136 * Remove a duplicate #include in a sample program. Fixed by Masashi Honma #2326.
137 * Remove the mbedtls namespacing from the header file, to fix a "file not found"
138 build error. Fixed by Haijun Gu #2319.
139 * Fix signed-to-unsigned integer conversion warning
140 in X.509 module. Fixes #2212.
141 * Reduce stack usage of `mpi_write_hlp()` by eliminating recursion.
143 * Fix false failure in all.sh when backup files exist in include/mbedtls
144 (e.g. config.h.bak). Fixed by Peter Kolbus (Garmin) #2407.
145 * Ensure that unused bits are zero when writing ASN.1 bitstrings when using
146 mbedtls_asn1_write_bitstring().
147 * Fix issue when writing the named bitstrings in KeyUsage and NsCertType
148 extensions in CSRs and CRTs that caused these bitstrings to not be encoded
149 correctly as trailing zeroes were not accounted for as unused bits in the
150 leading content octet. Fixes #1610.
153 * Reduce RAM consumption during session renegotiation by not storing
154 the peer CRT chain and session ticket twice.
155 * Include configuration file in all header files that use configuration,
156 instead of relying on other header files that they include.
157 Inserted as an enhancement for #1371
158 * Add support for alternative CSR headers, as used by Microsoft and defined
159 in RFC 7468. Found by Michael Ernst. Fixes #767.
160 * Correct many misspellings. Fixed by MisterDA #2371.
161 * Provide an abstraction of vsnprintf to allow alternative implementations
162 for platforms that don't provide it. Based on contributions by Joris Aerts
163 and Nathaniel Wesley Filardo.
164 * Fix clobber list in MIPS assembly for large integer multiplication.
165 Previously, this could lead to functionally incorrect assembly being
166 produced by some optimizing compilers, showing up as failures in
167 e.g. RSA or ECC signature operations. Reported in #1722, fix suggested
168 by Aurelien Jarno and submitted by Jeffrey Martin.
169 * Reduce the complexity of the timing tests. They were assuming more than the
170 underlying OS actually guarantees.
171 * Fix configuration queries in ssl-opt.h. #2030
172 * Ensure that ssl-opt.h can be run in OS X. #2029
173 * Re-enable certain interoperability tests in ssl-opt.sh which had previously
174 been disabled for lack of a sufficiently recent version of GnuTLS on the CI.
175 * Ciphersuites based on 3DES now have the lowest priority by default when
178 = mbed TLS 2.16.0 branch released 2018-12-21
181 * Add a new config.h option of MBEDTLS_CHECK_PARAMS that enables validation
182 of parameters in the API. This allows detection of obvious misuses of the
183 API, such as passing NULL pointers. The API of existing functions hasn't
184 changed, but requirements on parameters have been made more explicit in
185 the documentation. See the corresponding API documentation for each
186 function to see for which parameter values it is defined. This feature is
187 disabled by default. See its API documentation in config.h for additional
188 steps you have to take when enabling it.
191 * The following functions in the random generator modules have been
192 deprecated and replaced as shown below. The new functions change
193 the return type from void to int to allow returning error codes when
194 using MBEDTLS_<MODULE>_ALT for the underlying AES or message digest
195 primitive. Fixes #1798.
196 mbedtls_ctr_drbg_update() -> mbedtls_ctr_drbg_update_ret()
197 mbedtls_hmac_drbg_update() -> mbedtls_hmac_drbg_update_ret()
198 * Extend ECDH interface to enable alternative implementations.
199 * Deprecate error codes of the form MBEDTLS_ERR_xxx_INVALID_KEY_LENGTH for
200 ARIA, CAMELLIA and Blowfish. These error codes will be replaced by
201 the more generic per-module error codes MBEDTLS_ERR_xxx_BAD_INPUT_DATA.
202 * Additional parameter validation checks have been added for the following
203 modules - AES, ARIA, Blowfish, CAMELLIA, CCM, GCM, DHM, ECP, ECDSA, ECDH,
204 ECJPAKE, SHA, Chacha20 and Poly1305, cipher, pk, RSA, and MPI.
205 Where modules have had parameter validation added, existing parameter
206 checks may have changed. Some modules, such as Chacha20 had existing
207 parameter validation whereas other modules had little. This has now been
208 changed so that the same level of validation is present in all modules, and
209 that it is now optional with the MBEDTLS_CHECK_PARAMS flag which by default
210 is off. That means that checks which were previously present by default
214 * Deprecate mbedtls_ctr_drbg_update and mbedtls_hmac_drbg_update
215 in favor of functions that can return an error code.
218 * Fix for Clang, which was reporting a warning for the bignum.c inline
219 assembly for AMD64 targets creating string literals greater than those
220 permitted by the ISO C99 standard. Found by Aaron Jones. Fixes #482.
221 * Fix runtime error in `mbedtls_platform_entropy_poll()` when run
222 through qemu user emulation. Reported and fix suggested by randombit
223 in #1212. Fixes #1212.
224 * Fix an unsafe bounds check when restoring an SSL session from a ticket.
225 This could lead to a buffer overflow, but only in case ticket authentication
226 was broken. Reported and fix suggested by Guido Vranken in #659.
227 * Add explicit integer to enumeration type casts to example program
228 programs/pkey/gen_key which previously led to compilation failure
229 on some toolchains. Reported by phoenixmcallister. Fixes #2170.
230 * Fix double initialization of ECC hardware that made some accelerators
232 * Clarify documentation of mbedtls_ssl_set_own_cert() regarding the absence
233 of check for certificate/key matching. Reported by Attila Molnar, #507.
235 = mbed TLS 2.15.1 branch released 2018-11-30
238 * Update the Mbed Crypto submodule to version 0.1.0b2.
240 = mbed TLS 2.15.0 branch released 2018-11-23
243 * Add an experimental build option, USE_CRYPTO_SUBMODULE, to enable use of
244 Mbed Crypto as the source of the cryptography implementation.
245 * Add an experimental configuration option, MBEDTLS_PSA_CRYPTO_C, to enable
246 the PSA Crypto API from Mbed Crypto when additionally used with the
247 USE_CRYPTO_SUBMODULE build option.
250 * Add unit tests for AES-GCM when called through mbedtls_cipher_auth_xxx()
251 from the cipher abstraction layer. Fixes #2198.
253 = mbed TLS 2.14.1 branch released 2018-11-30
256 * Fix timing variations and memory access variations in RSA PKCS#1 v1.5
257 decryption that could lead to a Bleichenbacher-style padding oracle
258 attack. In TLS, this affects servers that accept ciphersuites based on
259 RSA decryption (i.e. ciphersuites whose name contains RSA but not
260 (EC)DH(E)). Discovered by Eyal Ronen (Weizmann Institute), Robert Gillham
261 (University of Adelaide), Daniel Genkin (University of Michigan),
262 Adi Shamir (Weizmann Institute), David Wong (NCC Group), and Yuval Yarom
263 (University of Adelaide, Data61). The attack is described in more detail
264 in the paper available here: http://cat.eyalro.net/cat.pdf CVE-2018-19608
265 * In mbedtls_mpi_write_binary(), don't leak the exact size of the number
266 via branching and memory access patterns. An attacker who could submit
267 a plaintext for RSA PKCS#1 v1.5 decryption but only observe the timing
268 of the decryption and not its result could nonetheless decrypt RSA
269 plaintexts and forge RSA signatures. Other asymmetric algorithms may
270 have been similarly vulnerable. Reported by Eyal Ronen, Robert Gillham,
271 Daniel Genkin, Adi Shamir, David Wong and Yuval Yarom.
272 * Wipe sensitive buffers on the stack in the CTR_DRBG and HMAC_DRBG
276 * The new functions mbedtls_ctr_drbg_update_ret() and
277 mbedtls_hmac_drbg_update_ret() are similar to mbedtls_ctr_drbg_update()
278 and mbedtls_hmac_drbg_update() respectively, but the new functions
279 report errors whereas the old functions return void. We recommend that
280 applications use the new functions.
282 = mbed TLS 2.14.0 branch released 2018-11-19
285 * Fix overly strict DN comparison when looking for CRLs belonging to a
286 particular CA. This previously led to ignoring CRLs when the CRL's issuer
287 name and the CA's subject name differed in their string encoding (e.g.,
288 one using PrintableString and the other UTF8String) or in the choice of
289 upper and lower case. Reported by Henrik Andersson of Bosch GmbH in issue
291 * Fix a flawed bounds check in server PSK hint parsing. In case the
292 incoming message buffer was placed within the first 64KiB of address
293 space and a PSK-(EC)DHE ciphersuite was used, this allowed an attacker
294 to trigger a memory access up to 64KiB beyond the incoming message buffer,
295 potentially leading to an application crash or information disclosure.
296 * Fix mbedtls_mpi_is_prime() to use more rounds of probabilistic testing. The
297 previous settings for the number of rounds made it practical for an
298 adversary to construct non-primes that would be erroneously accepted as
299 primes with high probability. This does not have an impact on the
300 security of TLS, but can matter in other contexts with numbers chosen
301 potentially by an adversary that should be prime and can be validated.
302 For example, the number of rounds was enough to securely generate RSA key
303 pairs or Diffie-Hellman parameters, but was insufficient to validate
304 Diffie-Hellman parameters properly.
305 See "Prime and Prejudice" by by Martin R. Albrecht and Jake Massimo and
306 Kenneth G. Paterson and Juraj Somorovsky.
309 * Add support for temporarily suspending expensive ECC computations after
310 some configurable amount of operations. This is intended to be used in
311 constrained, single-threaded systems where ECC is time consuming and can
312 block other operations until they complete. This is disabled by default,
313 but can be enabled by MBEDTLS_ECP_RESTARTABLE at compile time and
314 configured by mbedtls_ecp_set_max_ops() at runtime. It applies to the new
315 xxx_restartable functions in ECP, ECDSA, PK and X.509 (CRL not supported
316 yet), and to existing functions in ECDH and SSL (currently only
317 implemented client-side, for ECDHE-ECDSA ciphersuites in TLS 1.2,
318 including client authentication).
319 * Add support for Arm CPU DSP extensions to accelerate asymmetric key
320 operations. On CPUs where the extensions are available, they can accelerate
321 MPI multiplications used in ECC and RSA cryptography. Contributed by
323 * Extend RSASSA-PSS signature to allow a smaller salt size. Previously, PSS
324 signature always used a salt with the same length as the hash, and returned
325 an error if this was not possible. Now the salt size may be up to two bytes
326 shorter. This allows the library to support all hash and signature sizes
327 that comply with FIPS 186-4, including SHA-512 with a 1024-bit key.
328 * Add support for 128-bit keys in CTR_DRBG. Note that using keys shorter
329 than 256 bits limits the security of generated material to 128 bits.
332 * Add a common error code of `MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED` for
333 a feature that is not supported by underlying alternative
334 implementations implementing cryptographic primitives. This is useful for
335 hardware accelerators that don't implement all options or features.
338 * All module specific errors following the form
339 MBEDTLS_ERR_XXX_FEATURE_UNAVAILABLE that indicate a feature is not
340 supported are deprecated and are now replaced by the new equivalent
342 * All module specific generic hardware acceleration errors following the
343 form MBEDTLS_ERR_XXX_HW_ACCEL_FAILED that are deprecated and are replaced
344 by the equivalent plaform error.
345 * Deprecate the function mbedtls_mpi_is_prime() in favor of
346 mbedtls_mpi_is_prime_ext() which allows specifying the number of
350 * Fix wrong order of freeing in programs/ssl/ssl_server2 example
351 application leading to a memory leak in case both
352 MBEDTLS_MEMORY_BUFFER_ALLOC_C and MBEDTLS_MEMORY_BACKTRACE are set.
354 * Fix a bug in the update function for SSL ticket keys which previously
355 invalidated keys of a lifetime of less than a 1s. Fixes #1968.
356 * Fix failure in hmac_drbg in the benchmark sample application, when
357 MBEDTLS_THREADING_C is defined. Found by TrinityTonic, #1095
358 * Fix a bug in the record decryption routine ssl_decrypt_buf()
359 which lead to accepting properly authenticated but improperly
360 padded records in case of CBC ciphersuites using Encrypt-then-MAC.
361 * Fix memory leak and freeing without initialization in the example
362 program programs/x509/cert_write. Fixes #1422.
363 * Ignore IV in mbedtls_cipher_set_iv() when the cipher mode is
364 MBEDTLS_MODE_ECB. Found by ezdevelop. Fixes #1091.
365 * Zeroize memory used for buffering or reassembling handshake messages
367 * Use `mbedtls_platform_zeroize()` instead of `memset()` for zeroization
368 of sensitive data in the example programs aescrypt2 and crypt_and_hash.
369 * Change the default string format used for various X.509 DN attributes to
370 UTF8String. Previously, the use of the PrintableString format led to
371 wildcards and non-ASCII characters being unusable in some DN attributes.
372 Reported by raprepo in #1860 and by kevinpt in #468. Fix contributed by
374 * Fix compilation failure for configurations which use compile time
375 replacements of standard calloc/free functions through the macros
376 MBEDTLS_PLATFORM_CALLOC_MACRO and MBEDTLS_PLATFORM_FREE_MACRO.
377 Reported by ole-de and ddhome2006. Fixes #882, #1642 and #1706.
380 * Removed support for Yotta as a build tool.
381 * Add tests for session resumption in DTLS.
382 * Close a test gap in (D)TLS between the client side and the server side:
383 test the handling of large packets and small packets on the client side
384 in the same way as on the server side.
385 * Change the dtls_client and dtls_server samples to work by default over
386 IPv6 and optionally by a build option over IPv4.
387 * Change the use of Windows threading to use Microsoft Visual C++ runtime
388 calls, rather than Win32 API calls directly. This is necessary to avoid
389 conflict with C runtime usage. Found and fixed by irwir.
390 * Remember the string format of X.509 DN attributes when replicating
391 X.509 DNs. Previously, DN attributes were always written in their default
392 string format (mostly PrintableString), which could lead to CRTs being
393 created which used PrintableStrings in the issuer field even though the
394 signing CA used UTF8Strings in its subject field; while X.509 compliant,
395 such CRTs were rejected in some applications, e.g. some versions of
396 Firefox, curl and GnuTLS. Reported in #1033 by Moschn. Fix contributed by
398 * Improve documentation of mbedtls_ssl_get_verify_result().
399 Fixes #517 reported by github-monoculture.
400 * Add MBEDTLS_MPI_GEN_PRIME_FLAG_LOW_ERR flag to mbedtls_mpi_gen_prime() and
401 use it to reduce error probability in RSA key generation to levels mandated
404 = mbed TLS 2.13.1 branch released 2018-09-06
407 * Extend the platform module with an abstraction mbedtls_platform_gmtime_r()
408 whose implementation should behave as a thread-safe version of gmtime().
409 This allows users to configure such an implementation at compile time when
410 the target system cannot be deduced automatically, by setting the option
411 MBEDTLS_PLATFORM_GMTIME_R_ALT. At this stage Mbed TLS is only able to
412 automatically select implementations for Windows and POSIX C libraries.
415 * Fix build failures on platforms where only gmtime() is available but
416 neither gmtime_r() nor gmtime_s() are present. Fixes #1907.
418 = mbed TLS 2.13.0 branch released 2018-08-31
421 * Fix an issue in the X.509 module which could lead to a buffer overread
422 during certificate extensions parsing. In case of receiving malformed
423 input (extensions length field equal to 0), an illegal read of one byte
424 beyond the input buffer is made. Found and analyzed by Nathan Crandall.
427 * Add support for fragmentation of outgoing DTLS handshake messages. This
428 is controlled by the maximum fragment length as set locally or negotiated
429 with the peer, as well as by a new per-connection MTU option, set using
430 mbedtls_ssl_set_mtu().
431 * Add support for auto-adjustment of MTU to a safe value during the
432 handshake when flights do not get through (RFC 6347, section 4.1.1.1,
434 * Add support for packing multiple records within a single datagram,
436 * Add support for buffering out-of-order handshake messages in DTLS.
437 The maximum amount of RAM used for this can be controlled by the
438 compile-time constant MBEDTLS_SSL_DTLS_MAX_BUFFERING defined
442 * Add function mbedtls_ssl_set_datagram_packing() to configure
443 the use of datagram packing (enabled by default).
446 * Fix a potential memory leak in mbedtls_ssl_setup() function. An allocation
447 failure in the function could lead to other buffers being leaked.
448 * Fixes an issue with MBEDTLS_CHACHAPOLY_C which would not compile if
449 MBEDTLS_ARC4_C and MBEDTLS_CIPHER_NULL_CIPHER weren't also defined. #1890
450 * Fix a memory leak in ecp_mul_comb() if ecp_precompute_comb() fails.
451 Fix contributed by Espressif Systems.
452 * Add ecc extensions only if an ecc based ciphersuite is used.
453 This improves compliance to RFC 4492, and as a result, solves
454 interoperability issues with BouncyCastle. Raised by milenamil in #1157.
455 * Replace printf with mbedtls_printf in the ARIA module. Found by
456 TrinityTonic in #1908.
457 * Fix potential use-after-free in mbedtls_ssl_get_max_frag_len()
458 and mbedtls_ssl_get_record_expansion() after a session reset. Fixes #1941.
459 * Fix a bug that caused SSL/TLS clients to incorrectly abort the handshake
460 with TLS versions 1.1 and earlier when the server requested authentication
461 without providing a list of CAs. This was due to an overly strict bounds
462 check in parsing the CertificateRequest message,
463 introduced in Mbed TLS 2.12.0. Fixes #1954.
464 * Fix a miscalculation of the maximum record expansion in
465 mbedtls_ssl_get_record_expansion() in case of ChachaPoly ciphersuites,
466 or CBC ciphersuites in (D)TLS versions 1.1 or higher. Fixes #1913, #1914.
467 * Fix undefined shifts with negative values in certificates parsing
468 (found by Catena cyber using oss-fuzz)
469 * Fix memory leak and free without initialization in pk_encrypt
470 and pk_decrypt example programs. Reported by Brace Stout. Fixes #1128.
471 * Remove redundant else statement. Raised by irwir. Fixes #1776.
474 * Copy headers preserving timestamps when doing a "make install".
475 Contributed by xueruini.
476 * Allow the forward declaration of public structs. Contributed by Dawid
477 Drozd. Fixes #1215 raised by randombit.
478 * Improve compatibility with some alternative CCM implementations by using
479 CCM test vectors from RAM.
480 * Add support for buffering of out-of-order handshake messages.
481 * Add warnings to the documentation of the HKDF module to reduce the risk
482 of misusing the mbedtls_hkdf_extract() and mbedtls_hkdf_expand()
483 functions. Fixes #1775. Reported by Brian J. Murray.
485 = mbed TLS 2.12.0 branch released 2018-07-25
488 * Fix a vulnerability in TLS ciphersuites based on CBC and using SHA-384,
489 in (D)TLS 1.0 to 1.2, that allowed an active network attacker to
490 partially recover the plaintext of messages under some conditions by
491 exploiting timing measurements. With DTLS, the attacker could perform
492 this recovery by sending many messages in the same connection. With TLS
493 or if mbedtls_ssl_conf_dtls_badmac_limit() was used, the attack only
494 worked if the same secret (for example a HTTP Cookie) has been repeatedly
495 sent over connections manipulated by the attacker. Connections using GCM
496 or CCM instead of CBC, using hash sizes other than SHA-384, or using
497 Encrypt-then-Mac (RFC 7366) were not affected. The vulnerability was
498 caused by a miscalculation (for SHA-384) in a countermeasure to the
499 original Lucky 13 attack. Found by Kenny Paterson, Eyal Ronen and Adi
501 * Fix a vulnerability in TLS ciphersuites based on CBC, in (D)TLS 1.0 to
502 1.2, that allowed a local attacker, able to execute code on the local
503 machine as well as manipulate network packets, to partially recover the
504 plaintext of messages under some conditions by using a cache attack
505 targeting an internal MD/SHA buffer. With TLS or if
506 mbedtls_ssl_conf_dtls_badmac_limit() was used, the attack only worked if
507 the same secret (for example a HTTP Cookie) has been repeatedly sent over
508 connections manipulated by the attacker. Connections using GCM or CCM
509 instead of CBC or using Encrypt-then-Mac (RFC 7366) were not affected.
510 Found by Kenny Paterson, Eyal Ronen and Adi Shamir.
511 * Add a counter-measure against a vulnerability in TLS ciphersuites based
512 on CBC, in (D)TLS 1.0 to 1.2, that allowed a local attacker, able to
513 execute code on the local machine as well as manipulate network packets,
514 to partially recover the plaintext of messages under some conditions (see
515 previous entry) by using a cache attack targeting the SSL input record
516 buffer. Connections using GCM or CCM instead of CBC or using
517 Encrypt-then-Mac (RFC 7366) were not affected. Found by Kenny Paterson,
518 Eyal Ronen and Adi Shamir.
521 * Add new crypto primitives from RFC 7539: stream cipher Chacha20, one-time
522 authenticator Poly1305 and AEAD construct Chacha20-Poly1305. Contributed
524 * Add support for CHACHA20-POLY1305 ciphersuites from RFC 7905.
525 * Add platform support for the Haiku OS. (https://www.haiku-os.org).
526 Contributed by Augustin Cavalier.
527 * Make the receive and transmit buffers independent sizes, for situations
528 where the outgoing buffer can be fixed at a smaller size than the incoming
529 buffer, which can save some RAM. If buffer lengths are kept equal, there
530 is no functional difference. Contributed by Angus Gratton, and also
531 independently contributed again by Paul Sokolovsky.
532 * Add support for key wrapping modes based on AES as defined by
533 NIST SP 800-38F algorithms KW and KWP and by RFC 3394 and RFC 5649.
536 * Fix the key_app_writer example which was writing a leading zero byte which
537 was creating an invalid ASN.1 tag. Found by Aryeh R. Fixes #1257.
538 * Fix compilation error on C++, because of a variable named new.
539 Found and fixed by Hirotaka Niisato in #1783.
540 * Fix "no symbols" warning issued by ranlib when building on Mac OS X. Fix
541 contributed by tabascoeye.
542 * Clarify documentation for mbedtls_ssl_write() to include 0 as a valid
543 return value. Found by @davidwu2000. #839
544 * Fix a memory leak in mbedtls_x509_csr_parse(), found by catenacyber,
545 Philippe Antoine. Fixes #1623.
546 * Remove unused headers included in x509.c. Found by Chris Hanson and fixed
547 by Brendan Shanks. Part of a fix for #992.
548 * Fix compilation error when MBEDTLS_ARC4_C is disabled and
549 MBEDTLS_CIPHER_NULL_CIPHER is enabled. Found by TrinityTonic in #1719.
550 * Added length checks to some TLS parsing functions. Found and fixed by
551 Philippe Antoine from Catena cyber. #1663.
552 * Fix the inline assembly for the MPI multiply helper function for i386 and
553 i386 with SSE2. Found by László Langó. Fixes #1550
554 * Fix namespacing in header files. Remove the `mbedtls` namespacing in
555 the `#include` in the header files. Resolves #857
556 * Fix compiler warning of 'use before initialisation' in
557 mbedtls_pk_parse_key(). Found by Martin Boye Petersen and fixed by Dawid
559 * Fix decryption for zero length messages (which contain all padding) when a
560 CBC based ciphersuite is used together with Encrypt-then-MAC. Previously,
561 such a message was wrongly reported as an invalid record and therefore lead
562 to the connection being terminated. Seen most often with OpenSSL using
563 TLS 1.0. Reported by @kFYatek and by Conor Murphy on the forum. Fix
564 contributed by Espressif Systems. Fixes #1632
565 * Fix ssl_client2 example to send application data with 0-length content
566 when the request_size argument is set to 0 as stated in the documentation.
568 * Correct the documentation for `mbedtls_ssl_get_session()`. This API has
569 deep copy of the session, and the peer certificate is not lost. Fixes #926.
570 * Fix build using -std=c99. Fixed by Nick Wilson.
573 * Fail when receiving a TLS alert message with an invalid length, or invalid
574 zero-length messages when using TLS 1.2. Contributed by Espressif Systems.
575 * Change the default behaviour of mbedtls_hkdf_extract() to return an error
576 when calling with a NULL salt and non-zero salt_len. Contributed by
578 * Change the shebang line in Perl scripts to look up perl in the PATH.
579 Contributed by fbrosson.
580 * Allow overriding the time on Windows via the platform-time abstraction.
581 Fixed by Nick Wilson.
582 * Use gmtime_r/gmtime_s for thread-safety. Fixed by Nick Wilson.
584 = mbed TLS 2.11.0 branch released 2018-06-18
587 * Add additional block mode, OFB (Output Feedback), to the AES module and
588 cipher abstraction module.
589 * Implement the HMAC-based extract-and-expand key derivation function
590 (HKDF) per RFC 5869. Contributed by Thomas Fossati.
591 * Add support for the CCM* block cipher mode as defined in IEEE Std. 802.15.4.
592 * Add support for the XTS block cipher mode with AES (AES-XTS).
593 Contributed by Aorimn in pull request #414.
594 * In TLS servers, support offloading private key operations to an external
595 cryptoprocessor. Private key operations can be asynchronous to allow
596 non-blocking operation of the TLS server stack.
599 * Fix the cert_write example to handle certificates signed with elliptic
600 curves as well as RSA. Fixes #777 found by dbedev.
601 * Fix for redefinition of _WIN32_WINNT to avoid overriding a definition
602 used by user applications. Found and fixed by Fabio Alessandrelli.
603 * Fix compilation warnings with IAR toolchain, on 32 bit platform.
604 Reported by rahmanih in #683
605 * Fix braces in mbedtls_memory_buffer_alloc_status(). Found by sbranden, #552.
608 * Changed CMake defaults for IAR to treat all compiler warnings as errors.
609 * Changed the Clang parameters used in the CMake build files to work for
610 versions later than 3.6. Versions of Clang earlier than this may no longer
613 = mbed TLS 2.10.0 branch released 2018-06-06
616 * Add support for ARIA cipher (RFC 5794) and associated TLS ciphersuites
617 (RFC 6209). Disabled by default, see MBEDTLS_ARIA_C in config.h
620 * Extend the platform module with a util component that contains
621 functionality shared by multiple Mbed TLS modules. At this stage
622 platform_util.h (and its associated platform_util.c) only contain
623 mbedtls_platform_zeroize(), which is a critical function from a security
624 point of view. mbedtls_platform_zeroize() needs to be regularly tested
625 against compilers to ensure that calls to it are not removed from the
626 output binary as part of redundant code elimination optimizations.
627 Therefore, mbedtls_platform_zeroize() is moved to the platform module to
628 facilitate testing and maintenance.
631 * Fix an issue with MicroBlaze support in bn_mul.h which was causing the
632 build to fail. Found by zv-io. Fixes #1651.
635 * Support TLS testing in out-of-source builds using cmake. Fixes #1193.
636 * Fix redundant declaration of mbedtls_ssl_list_ciphersuites. Raised by
639 = mbed TLS 2.9.0 branch released 2018-04-30
642 * Fix an issue in the X.509 module which could lead to a buffer overread
643 during certificate validation. Additionally, the issue could also lead to
644 unnecessary callback checks being made or to some validation checks to be
645 omitted. The overread could be triggered remotely, while the other issues
646 would require a non DER-compliant certificate to be correctly signed by a
647 trusted CA, or a trusted CA with a non DER-compliant certificate. Found by
649 * Fix the buffer length assertion in the ssl_parse_certificate_request()
650 function which led to an arbitrary overread of the message buffer. The
651 overreads could be caused by receiving a malformed message at the point
652 where an optional signature algorithms list is expected when the signature
653 algorithms section is too short. In builds with debug output, the overread
654 data is output with the debug data.
655 * Fix a client-side bug in the validation of the server's ciphersuite choice
656 which could potentially lead to the client accepting a ciphersuite it didn't
657 offer or a ciphersuite that cannot be used with the TLS or DTLS version
658 chosen by the server. This could lead to corruption of internal data
659 structures for some configurations.
662 * Add an option, MBEDTLS_AES_FEWER_TABLES, to dynamically compute smaller AES
663 tables during runtime, thereby reducing the RAM/ROM footprint by ~6KiB.
664 Suggested and contributed by jkivilin in pull request #394.
665 * Add initial support for Curve448 (RFC 7748). Only mbedtls_ecp_mul() and
666 ECDH primitive functions (mbedtls_ecdh_gen_public(),
667 mbedtls_ecdh_compute_shared()) are supported for now. Contributed by
668 Nicholas Wilson in pull request #348.
671 * Extend the public API with the function of mbedtls_net_poll() to allow user
672 applications to wait for a network context to become ready before reading
674 * Add function mbedtls_ssl_check_pending() to the public API to allow
675 a check for whether more more data is pending to be processed in the
676 internal message buffers.
677 This function is necessary to determine when it is safe to idle on the
678 underlying transport in case event-driven IO is used.
681 * Fix a spurious uninitialized variable warning in cmac.c. Fix independently
682 contributed by Brian J Murray and David Brown.
683 * Add missing dependencies in test suites that led to build failures
684 in configurations that omit certain hashes or public-key algorithms.
686 * Fix C89 incompatibility in benchmark.c. Contributed by Brendan Shanks.
688 * Add missing dependencies for MBEDTLS_HAVE_TIME_DATE and
689 MBEDTLS_VERSION_FEATURES in some test suites. Contributed by
690 Deomid Ryabkov. Fixes #1299, #1475.
691 * Fix the Makefile build process for building shared libraries on Mac OS X.
693 * Fix parsing of PKCS#8 encoded Elliptic Curve keys. Previously Mbed TLS was
694 unable to parse keys which had only the optional parameters field of the
695 ECPrivateKey structure. Found by Jethro Beekman, fixed in #1379.
696 * Return the plaintext data more quickly on unpadded CBC decryption, as
697 stated in the mbedtls_cipher_update() documentation. Contributed by
699 * Fix overriding and ignoring return values when parsing and writing to
700 a file in pk_sign program. Found by kevlut in #1142.
701 * Restrict usage of error code MBEDTLS_ERR_SSL_WANT_READ to situations
702 where data needs to be fetched from the underlying transport in order
703 to make progress. Previously, this error code was also occasionally
704 returned when unexpected messages were being discarded, ignoring that
705 further messages could potentially already be pending to be processed
706 in the internal buffers; these cases led to deadlocks when event-driven
707 I/O was used. Found and reported by Hubert Mis in #772.
708 * Fix buffer length assertions in the ssl_parse_certificate_request()
709 function which leads to a potential one byte overread of the message
711 * Fix invalid buffer sizes passed to zlib during record compression and
713 * Fix the soversion of libmbedcrypto to match the soversion of the
714 maintained 2.7 branch. The soversion was increased in Mbed TLS
715 version 2.7.1 to reflect breaking changes in that release, but the
716 increment was missed in 2.8.0 and later releases outside of the 2.7 branch.
719 * Remove some redundant code in bignum.c. Contributed by Alexey Skalozub.
720 * Support cmake builds where Mbed TLS is a subproject. Fix contributed
721 independently by Matthieu Volat and Arne Schwabe.
722 * Improve testing in configurations that omit certain hashes or
723 public-key algorithms. Includes contributions by Gert van Dijk.
724 * Improve negative testing of X.509 parsing.
725 * Do not define global mutexes around readdir() and gmtime() in
726 configurations where the feature is disabled. Found and fixed by Gergely
728 * Harden the function mbedtls_ssl_config_free() against misuse, so that it
729 doesn't leak memory if the user doesn't use mbedtls_ssl_conf_psk() and
730 instead incorrectly manipulates the configuration structure directly.
731 Found and fix submitted by junyeonLEE in #1220.
732 * Provide an empty implementation of mbedtls_pkcs5_pbes2() when
733 MBEDTLS_ASN1_PARSE_C is not enabled. This allows the use of PBKDF2
734 without PBES2. Fixed by Marcos Del Sol Vives.
735 * Add the order of the base point as N in the mbedtls_ecp_group structure
736 for Curve25519 (other curves had it already). Contributed by Nicholas
738 * Improve the documentation of mbedtls_net_accept(). Contributed by Ivan
740 * Improve the documentation of mbedtls_ssl_write(). Suggested by
741 Paul Sokolovsky in #1356.
742 * Add an option in the Makefile to support ar utilities where the operation
743 letter must not be prefixed by '-', such as LLVM. Found and fixed by
745 * Allow configuring the shared library extension by setting the DLEXT
746 environment variable when using the project makefiles.
747 * Optimize unnecessary zeroing in mbedtls_mpi_copy. Based on a contribution
748 by Alexey Skalozub in #405.
749 * In the SSL module, when f_send, f_recv or f_recv_timeout report
750 transmitting more than the required length, return an error. Raised by
751 Sam O'Connor in #1245.
752 * Improve robustness of mbedtls_ssl_derive_keys against the use of
753 HMAC functions with non-HMAC ciphersuites. Independently contributed
754 by Jiayuan Chen in #1377. Fixes #1437.
755 * Improve security of RSA key generation by including criteria from
756 FIPS 186-4. Contributed by Jethro Beekman. #1380
757 * Declare functions in header files even when an alternative implementation
758 of the corresponding module is activated by defining the corresponding
759 MBEDTLS_XXX_ALT macro. This means that alternative implementations do
760 not need to copy the declarations, and ensures that they will have the
762 * Add platform setup and teardown calls in test suites.
764 = mbed TLS 2.8.0 branch released 2018-03-16
766 Default behavior changes
767 * The truncated HMAC extension now conforms to RFC 6066. This means
768 that when both sides of a TLS connection negotiate the truncated
769 HMAC extension, Mbed TLS can now interoperate with other
770 compliant implementations, but this breaks interoperability with
771 prior versions of Mbed TLS. To restore the old behavior, enable
772 the (deprecated) option MBEDTLS_SSL_TRUNCATED_HMAC_COMPAT in
773 config.h. Found by Andreas Walz (ivESK, Offenburg University of
777 * Fix implementation of the truncated HMAC extension. The previous
778 implementation allowed an offline 2^80 brute force attack on the
779 HMAC key of a single, uninterrupted connection (with no
780 resumption of the session).
781 * Verify results of RSA private key operations to defend
782 against Bellcore glitch attack.
783 * Fix a buffer overread in ssl_parse_server_key_exchange() that could cause
784 a crash on invalid input.
785 * Fix a buffer overread in ssl_parse_server_psk_hint() that could cause a
786 crash on invalid input.
787 * Fix CRL parsing to reject CRLs containing unsupported critical
788 extensions. Found by Falko Strenzke and Evangelos Karatsiolis.
791 * Extend PKCS#8 interface by introducing support for the entire SHA
792 algorithms family when encrypting private keys using PKCS#5 v2.0.
793 This allows reading encrypted PEM files produced by software that
794 uses PBKDF2-SHA2, such as OpenSSL 1.1. Submitted by Antonio Quartulli,
795 OpenVPN Inc. Fixes #1339
796 * Add support for public keys encoded in PKCS#1 format. #1122
799 * Deprecate support for record compression (configuration option
800 MBEDTLS_ZLIB_SUPPORT).
803 * Fix the name of a DHE parameter that was accidentally changed in 2.7.0.
805 * Fix test_suite_pk to work on 64-bit ILP32 systems. #849
806 * Fix mbedtls_x509_crt_profile_suiteb, which used to reject all certificates
807 with flag MBEDTLS_X509_BADCERT_BAD_PK even when the key type was correct.
808 In the context of SSL, this resulted in handshake failure. Reported by
809 daniel in the Mbed TLS forum. #1351
810 * Fix Windows x64 builds with the included mbedTLS.sln file. #1347
811 * Fix setting version TLSv1 as minimal version, even if TLS 1
812 is not enabled. Set MBEDTLS_SSL_MIN_MAJOR_VERSION
813 and MBEDTLS_SSL_MIN_MINOR_VERSION instead of
814 MBEDTLS_SSL_MAJOR_VERSION_3 and MBEDTLS_SSL_MINOR_VERSION_1. #664
815 * Fix compilation error on Mingw32 when _TRUNCATE is defined. Use _TRUNCATE
816 only if __MINGW32__ not defined. Fix suggested by Thomas Glanzmann and
817 Nick Wilson on issue #355
818 * In test_suite_pk, pass valid parameters when testing for hash length
820 * Fix memory allocation corner cases in memory_buffer_alloc.c module. Found
821 by Guido Vranken. #639
822 * Log correct number of ciphersuites used in Client Hello message. #918
823 * Fix X509 CRT parsing that would potentially accept an invalid tag when
824 parsing the subject alternative names.
825 * Fix a possible arithmetic overflow in ssl_parse_server_key_exchange()
826 that could cause a key exchange to fail on valid data.
827 * Fix a possible arithmetic overflow in ssl_parse_server_psk_hint() that
828 could cause a key exchange to fail on valid data.
829 * Don't define mbedtls_aes_decrypt and mbedtls_aes_encrypt under
830 MBEDTLS_DEPRECATED_REMOVED. #1388
831 * Fix a 1-byte heap buffer overflow (read-only) during private key parsing.
832 Found through fuzz testing.
835 * Fix tag lengths and value ranges in the documentation of CCM encryption.
836 Contributed by Mathieu Briand.
837 * Fix typo in a comment ctr_drbg.c. Contributed by Paul Sokolovsky.
838 * Remove support for the library reference configuration for picocoin.
839 * MD functions deprecated in 2.7.0 are no longer inline, to provide
840 a migration path for those depending on the library's ABI.
841 * Clarify the documentation of mbedtls_ssl_setup.
842 * Use (void) when defining functions with no parameters. Contributed by
845 = mbed TLS 2.7.0 branch released 2018-02-03
848 * Fix a heap corruption issue in the implementation of the truncated HMAC
849 extension. When the truncated HMAC extension is enabled and CBC is used,
850 sending a malicious application packet could be used to selectively corrupt
851 6 bytes on the peer's heap, which could potentially lead to crash or remote
852 code execution. The issue could be triggered remotely from either side in
853 both TLS and DTLS. CVE-2018-0488
854 * Fix a buffer overflow in RSA-PSS verification when the hash was too large
855 for the key size, which could potentially lead to crash or remote code
856 execution. Found by Seth Terashima, Qualcomm Product Security Initiative,
857 Qualcomm Technologies Inc. CVE-2018-0487
858 * Fix buffer overflow in RSA-PSS verification when the unmasked data is all
860 * Fix an unsafe bounds check in ssl_parse_client_psk_identity() when adding
861 64 KiB to the address of the SSL buffer and causing a wrap around.
862 * Fix a potential heap buffer overflow in mbedtls_ssl_write(). When the (by
863 default enabled) maximum fragment length extension is disabled in the
864 config and the application data buffer passed to mbedtls_ssl_write
865 is larger than the internal message buffer (16384 bytes by default), the
866 latter overflows. The exploitability of this issue depends on whether the
867 application layer can be forced into sending such large packets. The issue
868 was independently reported by Tim Nordell via e-mail and by Florin Petriuc
869 and sjorsdewit on GitHub. Fix proposed by Florin Petriuc in #1022.
871 * Add a provision to prevent compiler optimizations breaking the time
872 constancy of mbedtls_ssl_safer_memcmp().
873 * Ensure that buffers are cleared after use if they contain sensitive data.
874 Changes were introduced in multiple places in the library.
875 * Set PEM buffer to zero before freeing it, to avoid decoded private keys
876 being leaked to memory after release.
877 * Fix dhm_check_range() failing to detect trivial subgroups and potentially
878 leaking 1 bit of the private key. Reported by prashantkspatil.
879 * Make mbedtls_mpi_read_binary() constant-time with respect to the input
880 data. Previously, trailing zero bytes were detected and omitted for the
881 sake of saving memory, but potentially leading to slight timing
882 differences. Reported by Marco Macchetti, Kudelski Group.
883 * Wipe stack buffer temporarily holding EC private exponent
884 after keypair generation.
885 * Fix a potential heap buffer over-read in ALPN extension parsing
886 (server-side). Could result in application crash, but only if an ALPN
887 name larger than 16 bytes had been configured on the server.
888 * Change default choice of DHE parameters from untrustworthy RFC 5114
889 to RFC 3526 containing parameters generated in a nothing-up-my-sleeve
893 * Allow comments in test data files.
894 * The selftest program can execute a subset of the tests based on command
896 * New unit tests for timing. Improve the self-test to be more robust
897 when run on a heavily-loaded machine.
898 * Add alternative implementation support for CCM and CMAC (MBEDTLS_CCM_ALT,
899 MBEDTLS_CMAC_ALT). Submitted by Steven Cooreman, Silicon Labs.
900 * Add support for alternative implementations of GCM, selected by the
901 configuration flag MBEDTLS_GCM_ALT.
902 * Add support for alternative implementations for ECDSA, controlled by new
903 configuration flags MBEDTLS_ECDSA_SIGN_ALT, MBEDTLS_ECDSA_VERIFY_ALT and
904 MBEDTLS_ECDSDA_GENKEY_AT in config.h.
905 The following functions from the ECDSA module can be replaced
906 with alternative implementation:
907 mbedtls_ecdsa_sign(), mbedtls_ecdsa_verify() and mbedtls_ecdsa_genkey().
908 * Add support for alternative implementation of ECDH, controlled by the
909 new configuration flags MBEDTLS_ECDH_COMPUTE_SHARED_ALT and
910 MBEDTLS_ECDH_GEN_PUBLIC_ALT in config.h.
911 The following functions from the ECDH module can be replaced
912 with an alternative implementation:
913 mbedtls_ecdh_gen_public() and mbedtls_ecdh_compute_shared().
914 * Add support for alternative implementation of ECJPAKE, controlled by
915 the new configuration flag MBEDTLS_ECJPAKE_ALT.
916 * Add mechanism to provide alternative implementation of the DHM module.
919 * Extend RSA interface by multiple functions allowing structure-
920 independent setup and export of RSA contexts. Most notably,
921 mbedtls_rsa_import() and mbedtls_rsa_complete() are introduced for setting
922 up RSA contexts from partial key material and having them completed to the
923 needs of the implementation automatically. This allows to setup private RSA
924 contexts from keys consisting of N,D,E only, even if P,Q are needed for the
925 purpose or CRT and/or blinding.
926 * The configuration option MBEDTLS_RSA_ALT can be used to define alternative
927 implementations of the RSA interface declared in rsa.h.
928 * The following functions in the message digest modules (MD2, MD4, MD5,
929 SHA1, SHA256, SHA512) have been deprecated and replaced as shown below.
930 The new functions change the return type from void to int to allow
931 returning error codes when using MBEDTLS_<MODULE>_ALT.
932 mbedtls_<MODULE>_starts() -> mbedtls_<MODULE>_starts_ret()
933 mbedtls_<MODULE>_update() -> mbedtls_<MODULE>_update_ret()
934 mbedtls_<MODULE>_finish() -> mbedtls_<MODULE>_finish_ret()
935 mbedtls_<MODULE>_process() -> mbedtls_internal_<MODULE>_process()
938 * Deprecate usage of RSA primitives with non-matching key-type
939 (e.g. signing with a public key).
940 * Direct manipulation of structure fields of RSA contexts is deprecated.
941 Users are advised to use the extended RSA API instead.
942 * Deprecate usage of message digest functions that return void
943 (mbedtls_<MODULE>_starts, mbedtls_<MODULE>_update,
944 mbedtls_<MODULE>_finish and mbedtls_<MODULE>_process where <MODULE> is
945 any of MD2, MD4, MD5, SHA1, SHA256, SHA512) in favor of functions
946 that can return an error code.
947 * Deprecate untrustworthy DHE parameters from RFC 5114. Superseded by
948 parameters from RFC 3526 or the newly added parameters from RFC 7919.
949 * Deprecate hex string DHE constants MBEDTLS_DHM_RFC3526_MODP_2048_P etc.
950 Supserseded by binary encoded constants MBEDTLS_DHM_RFC3526_MODP_2048_P_BIN
952 * Deprecate mbedtls_ssl_conf_dh_param() for setting default DHE parameters
953 from hex strings. Superseded by mbedtls_ssl_conf_dh_param_bin()
954 accepting DHM parameters in binary form, matching the new constants.
957 * Fix ssl_parse_record_header() to silently discard invalid DTLS records
958 as recommended in RFC 6347 Section 4.1.2.7.
959 * Fix memory leak in mbedtls_ssl_set_hostname() when called multiple times.
960 Found by projectgus and Jethro Beekman, #836.
961 * Fix usage help in ssl_server2 example. Found and fixed by Bei Lin.
962 * Parse signature algorithm extension when renegotiating. Previously,
963 renegotiated handshakes would only accept signatures using SHA-1
964 regardless of the peer's preferences, or fail if SHA-1 was disabled.
965 * Fix leap year calculation in x509_date_is_valid() to ensure that invalid
966 dates on leap years with 100 and 400 intervals are handled correctly. Found
967 by Nicholas Wilson. #694
968 * Fix some invalid RSA-PSS signatures with keys of size 8N+1 that were
969 accepted. Generating these signatures required the private key.
970 * Fix out-of-memory problem when parsing 4096-bit PKCS8-encrypted RSA keys.
971 Found independently by Florian in the mbed TLS forum and by Mishamax.
973 * Fix variable used before assignment compilation warnings with IAR
974 toolchain. Found by gkerrien38.
975 * Fix unchecked return codes from AES, DES and 3DES functions in
976 pem_aes_decrypt(), pem_des_decrypt() and pem_des3_decrypt() respectively.
977 If a call to one of the functions of the cryptographic primitive modules
978 failed, the error may not be noticed by the function
979 mbedtls_pem_read_buffer() causing it to return invalid values. Found by
981 * Include configuration file in md.h, to fix compilation warnings.
982 Reported by aaronmdjones in #1001
983 * Correct extraction of signature-type from PK instance in X.509 CRT and CSR
984 writing routines that prevented these functions to work with alternative
985 RSA implementations. Raised by J.B. in the Mbed TLS forum. Fixes #1011.
986 * Don't print X.509 version tag for v1 CRT's, and omit extensions for
988 * Fix bugs in RSA test suite under MBEDTLS_NO_PLATFORM_ENTROPY. #1023 #1024
989 * Fix net_would_block() to avoid modification by errno through fcntl() call.
990 Found by nkolban. Fixes #845.
991 * Fix handling of handshake messages in mbedtls_ssl_read() in case
992 MBEDTLS_SSL_RENEGOTIATION is disabled. Found by erja-gp.
993 * Add a check for invalid private parameters in mbedtls_ecdsa_sign().
994 Reported by Yolan Romailler.
995 * Fix word size check in in pk.c to not depend on MBEDTLS_HAVE_INT64.
996 * Fix incorrect unit in benchmark output. #850
997 * Add size-checks for record and handshake message content, securing
998 fragile yet non-exploitable code-paths.
999 * Fix crash when calling mbedtls_ssl_cache_free() twice. Found by
1000 MilenkoMitrovic, #1104
1001 * Fix mbedtls_timing_alarm(0) on Unix and MinGW.
1002 * Fix use of uninitialized memory in mbedtls_timing_get_timer() when reset=1.
1003 * Fix possible memory leaks in mbedtls_gcm_self_test().
1004 * Added missing return code checks in mbedtls_aes_self_test().
1005 * Fix issues in RSA key generation program programs/x509/rsa_genkey and the
1006 RSA test suite where the failure of CTR DRBG initialization lead to
1007 freeing an RSA context and several MPI's without proper initialization
1009 * Fix error message in programs/pkey/gen_key.c. Found and fixed by Chris Xue.
1010 * Fix programs/pkey/dh_server.c so that it actually works with dh_client.c.
1011 Found and fixed by Martijn de Milliano.
1012 * Fix an issue in the cipher decryption with the mode
1013 MBEDTLS_PADDING_ONE_AND_ZEROS that sometimes accepted invalid padding.
1014 Note, this padding mode is not used by the TLS protocol. Found and fixed by
1016 * Fix the entropy.c module to not call mbedtls_sha256_starts() or
1017 mbedtls_sha512_starts() in the mbedtls_entropy_init() function.
1018 * Fix the entropy.c module to ensure that mbedtls_sha256_init() or
1019 mbedtls_sha512_init() is called before operating on the relevant context
1020 structure. Do not assume that zeroizing a context is a correct way to
1021 reset it. Found independently by ccli8 on Github.
1022 * In mbedtls_entropy_free(), properly free the message digest context.
1023 * Fix status handshake status message in programs/ssl/dtls_client.c. Found
1024 and fixed by muddog.
1027 * Extend cert_write example program by options to set the certificate version
1028 and the message digest. Further, allow enabling/disabling of authority
1029 identifier, subject identifier and basic constraints extensions.
1030 * Only check for necessary RSA structure fields in `mbedtls_rsa_private`. In
1031 particular, don't require P,Q if neither CRT nor blinding are
1032 used. Reported and fix proposed independently by satur9nine and sliai
1034 * Only run AES-192 self-test if AES-192 is available. Fixes #963.
1035 * Tighten the RSA PKCS#1 v1.5 signature verification code and remove the
1036 undeclared dependency of the RSA module on the ASN.1 module.
1037 * Update all internal usage of deprecated message digest functions to the
1038 new ones with return codes. In particular, this modifies the
1039 mbedtls_md_info_t structure. Propagate errors from these functions
1040 everywhere except some locations in the ssl_tls.c module.
1041 * Improve CTR_DRBG error handling by propagating underlying AES errors.
1042 * Add MBEDTLS_ERR_XXX_HW_ACCEL_FAILED error codes for all cryptography
1043 modules where the software implementation can be replaced by a hardware
1045 * Add explicit warnings for the use of MD2, MD4, MD5, SHA-1, DES and ARC4
1046 throughout the library.
1048 = mbed TLS 2.6.0 branch released 2017-08-10
1051 * Fix authentication bypass in SSL/TLS: when authmode is set to optional,
1052 mbedtls_ssl_get_verify_result() would incorrectly return 0 when the peer's
1053 X.509 certificate chain had more than MBEDTLS_X509_MAX_INTERMEDIATE_CA
1054 (default: 8) intermediates, even when it was not trusted. This could be
1055 triggered remotely from either side. (With authmode set to 'required'
1056 (the default), the handshake was correctly aborted).
1057 * Reliably wipe sensitive data after use in the AES example applications
1058 programs/aes/aescrypt2 and programs/aes/crypt_and_hash.
1059 Found by Laurent Simon.
1062 * Add the functions mbedtls_platform_setup() and mbedtls_platform_teardown()
1063 and the context struct mbedtls_platform_context to perform
1064 platform-specific setup and teardown operations. The macro
1065 MBEDTLS_PLATFORM_SETUP_TEARDOWN_ALT allows the functions to be overridden
1066 by the user in a platform_alt.h file. These new functions are required in
1067 some embedded environments to provide a means of initialising underlying
1068 cryptographic acceleration hardware.
1071 * Reverted API/ABI breaking changes introduced in mbed TLS 2.5.1, to make the
1072 API consistent with mbed TLS 2.5.0. Specifically removed the inline
1073 qualifier from the functions mbedtls_aes_decrypt, mbedtls_aes_encrypt,
1074 mbedtls_ssl_ciphersuite_uses_ec and mbedtls_ssl_ciphersuite_uses_psk. Found
1075 by James Cowgill. #978
1076 * Certificate verification functions now set flags to -1 in case the full
1077 chain was not verified due to an internal error (including in the verify
1078 callback) or chain length limitations.
1079 * With authmode set to optional, the TLS handshake is now aborted if the
1080 verification of the peer's certificate failed due to an overlong chain or
1081 a fatal error in the verify callback.
1084 * Add a check if iv_len is zero in GCM, and return an error if it is zero.
1085 Reported by roberto. #716
1086 * Replace preprocessor condition from #if defined(MBEDTLS_THREADING_PTHREAD)
1087 to #if defined(MBEDTLS_THREADING_C) as the library cannot assume they will
1088 always be implemented by pthread support. #696
1089 * Fix a resource leak on Windows platforms in mbedtls_x509_crt_parse_path(),
1090 in the case of an error. Found by redplait. #590
1091 * Add MBEDTLS_MPI_CHK to check for error value of mbedtls_mpi_fill_random.
1092 Reported and fix suggested by guidovranken. #740
1093 * Fix conditional preprocessor directives in bignum.h to enable 64-bit
1094 compilation when using ARM Compiler 6.
1095 * Fix a potential integer overflow in the version verification for DER
1096 encoded X.509 CRLs. The overflow could enable maliciously constructed CRLs
1097 to bypass the version verification check. Found by Peng Li/Yueh-Hsun Lin,
1098 KNOX Security, Samsung Research America
1099 * Fix potential integer overflow in the version verification for DER
1100 encoded X.509 CSRs. The overflow could enable maliciously constructed CSRs
1101 to bypass the version verification check. Found by Peng Li/Yueh-Hsun Lin,
1102 KNOX Security, Samsung Research America
1103 * Fix a potential integer overflow in the version verification for DER
1104 encoded X.509 certificates. The overflow could enable maliciously
1105 constructed certificates to bypass the certificate verification check.
1106 * Fix a call to the libc function time() to call the platform abstraction
1107 function mbedtls_time() instead. Found by wairua. #666
1108 * Avoid shadowing of time and index functions through mbed TLS function
1109 arguments. Found by inestlerode. #557.
1112 * Added config.h option MBEDTLS_NO_UDBL_DIVISION, to prevent the use of
1113 64-bit division. This is useful on embedded platforms where 64-bit division
1114 created a dependency on external libraries. #708
1115 * Removed mutexes from ECP hardware accelerator code. Now all hardware
1116 accelerator code in the library leaves concurrency handling to the
1117 platform. Reported by Steven Cooreman. #863
1118 * Define the macro MBEDTLS_AES_ROM_TABLES in the configuration file
1119 config-no-entropy.h to reduce the RAM footprint.
1120 * Added a test script that can be hooked into git that verifies commits
1121 before they are pushed.
1122 * Improve documentation of PKCS1 decryption functions.
1124 = mbed TLS 2.5.1 released 2017-06-21
1127 * Fixed unlimited overread of heap-based buffer in mbedtls_ssl_read().
1128 The issue could only happen client-side with renegotiation enabled.
1129 Could result in DoS (application crash) or information leak
1130 (if the application layer sent data read from mbedtls_ssl_read()
1131 back to the server or to a third party). Can be triggered remotely.
1132 * Removed SHA-1 and RIPEMD-160 from the default hash algorithms for
1133 certificate verification. SHA-1 can be turned back on with a compile-time
1135 * Fixed offset in FALLBACK_SCSV parsing that caused TLS server to fail to
1136 detect it sometimes. Reported by Hugo Leisink. #810
1137 * Tighten parsing of RSA PKCS#1 v1.5 signatures, to avoid a
1138 potential Bleichenbacher/BERserk-style attack.
1141 * Remove size zero arrays from ECJPAKE test suite. Size zero arrays are not
1142 valid C and they prevented the test from compiling in Visual Studio 2015
1143 and with GCC using the -Wpedantic compilation option.
1144 * Fix insufficient support for signature-hash-algorithm extension,
1145 resulting in compatibility problems with Chrome. Found by hfloyrd. #823
1146 * Fix behaviour that hid the original cause of fatal alerts in some cases
1147 when sending the alert failed. The fix makes sure not to hide the error
1148 that triggered the alert.
1149 * Fix SSLv3 renegotiation behaviour and stop processing data received from
1150 peer after sending a fatal alert to refuse a renegotiation attempt.
1151 Previous behaviour was to keep processing data even after the alert has
1153 * Accept empty trusted CA chain in authentication mode
1154 MBEDTLS_SSL_VERIFY_OPTIONAL. Found by Jethro Beekman. #864
1155 * Fix implementation of mbedtls_ssl_parse_certificate() to not annihilate
1156 fatal errors in authentication mode MBEDTLS_SSL_VERIFY_OPTIONAL and to
1157 reflect bad EC curves within verification result.
1158 * Fix bug that caused the modular inversion function to accept the invalid
1159 modulus 1 and therefore to hang. Found by blaufish. #641.
1160 * Fix incorrect sign computation in modular exponentiation when the base is
1161 a negative MPI. Previously the result was always negative. Found by Guido
1163 * Fix a numerical underflow leading to stack overflow in mpi_read_file()
1164 that was triggered uppon reading an empty line. Found by Guido Vranken.
1167 * Send fatal alerts in more cases. The previous behaviour was to skip
1168 sending the fatal alert and just drop the connection.
1169 * Clarify ECDSA documentation and improve the sample code to avoid
1170 misunderstanding and potentially dangerous use of the API. Pointed out
1171 by Jean-Philippe Aumasson.
1173 = mbed TLS 2.5.0 branch released 2017-05-17
1176 * Wipe stack buffers in RSA private key operations
1177 (rsa_rsaes_pkcs1_v15_decrypt(), rsa_rsaes_oaep_decrypt). Found by Laurent
1179 * Add exponent blinding to RSA private operations as a countermeasure
1180 against side-channel attacks like the cache attack described in
1181 https://arxiv.org/abs/1702.08719v2.
1182 Found and fix proposed by Michael Schwarz, Samuel Weiser, Daniel Gruss,
1183 Clémentine Maurice and Stefan Mangard.
1186 * Add hardware acceleration support for the Elliptic Curve Point module.
1187 This involved exposing parts of the internal interface to enable
1188 replacing the core functions and adding and alternative, module level
1189 replacement support for enabling the extension of the interface.
1190 * Add a new configuration option to 'mbedtls_ssl_config' to enable
1191 suppressing the CA list in Certificate Request messages. The default
1192 behaviour has not changed, namely every configured CAs name is included.
1195 * The following functions in the AES module have been deprecated and replaced
1196 by the functions shown below. The new functions change the return type from
1197 void to int to allow returning error codes when using MBEDTLS_AES_ALT,
1198 MBEDTLS_AES_DECRYPT_ALT or MBEDTLS_AES_ENCRYPT_ALT.
1199 mbedtls_aes_decrypt() -> mbedtls_internal_aes_decrypt()
1200 mbedtls_aes_encrypt() -> mbedtls_internal_aes_encrypt()
1203 * Remove macros from compat-1.3.h that correspond to deleted items from most
1204 recent versions of the library. Found by Kyle Keen.
1205 * Fixed issue in the Threading module that prevented mutexes from
1206 initialising. Found by sznaider. #667 #843
1207 * Add checks in the PK module for the RSA functions on 64-bit systems.
1208 The PK and RSA modules use different types for passing hash length and
1209 without these checks the type cast could lead to data loss. Found by Guido
1212 = mbed TLS 2.4.2 branch released 2017-03-08
1215 * Add checks to prevent signature forgeries for very large messages while
1216 using RSA through the PK module in 64-bit systems. The issue was caused by
1217 some data loss when casting a size_t to an unsigned int value in the
1218 functions rsa_verify_wrap(), rsa_sign_wrap(), rsa_alt_sign_wrap() and
1219 mbedtls_pk_sign(). Found by Jean-Philippe Aumasson.
1220 * Fixed potential livelock during the parsing of a CRL in PEM format in
1221 mbedtls_x509_crl_parse(). A string containing a CRL followed by trailing
1222 characters after the footer could result in the execution of an infinite
1223 loop. The issue can be triggered remotely. Found by Greg Zaverucha,
1225 * Removed MD5 from the allowed hash algorithms for CertificateRequest and
1226 CertificateVerify messages, to prevent SLOTH attacks against TLS 1.2.
1227 Introduced by interoperability fix for #513.
1228 * Fixed a bug that caused freeing a buffer that was allocated on the stack,
1229 when verifying the validity of a key on secp224k1. This could be
1230 triggered remotely for example with a maliciously constructed certificate
1231 and potentially could lead to remote code execution on some platforms.
1232 Reported independently by rongsaws and Aleksandar Nikolic, Cisco Talos
1233 team. #569 CVE-2017-2784
1236 * Fix output certificate verification flags set by x509_crt_verify_top() when
1237 traversing a chain of trusted CA. The issue would cause both flags,
1238 MBEDTLS_X509_BADCERT_NOT_TRUSTED and MBEDTLS_X509_BADCERT_EXPIRED, to be
1239 set when the verification conditions are not met regardless of the cause.
1240 Found by Harm Verhagen and inestlerode. #665 #561
1241 * Fix the redefinition of macro ssl_set_bio to an undefined symbol
1242 mbedtls_ssl_set_bio_timeout in compat-1.3.h, by removing it.
1243 Found by omlib-lin. #673
1244 * Fix unused variable/function compilation warnings in pem.c, x509_crt.c and
1245 x509_csr.c that are reported when building mbed TLS with a config.h that
1246 does not define MBEDTLS_PEM_PARSE_C. Found by omnium21. #562
1247 * Fix incorrect renegotiation condition in ssl_check_ctr_renegotiate() that
1248 would compare 64 bits of the record counter instead of 48 bits as indicated
1249 in RFC 6347 Section 4.3.1. This could cause the execution of the
1250 renegotiation routines at unexpected times when the protocol is DTLS. Found
1252 * Fixed multiple buffer overreads in mbedtls_pem_read_buffer() when parsing
1253 the input string in PEM format to extract the different components. Found
1255 * Fixed potential arithmetic overflow in mbedtls_ctr_drbg_reseed() that could
1256 cause buffer bound checks to be bypassed. Found by Eyal Itkin.
1257 * Fixed potential arithmetic overflows in mbedtls_cipher_update() that could
1258 cause buffer bound checks to be bypassed. Found by Eyal Itkin.
1259 * Fixed potential arithmetic overflow in mbedtls_md2_update() that could
1260 cause buffer bound checks to be bypassed. Found by Eyal Itkin.
1261 * Fixed potential arithmetic overflow in mbedtls_base64_decode() that could
1262 cause buffer bound checks to be bypassed. Found by Eyal Itkin.
1263 * Fixed heap overreads in mbedtls_x509_get_time(). Found by Peng
1264 Li/Yueh-Hsun Lin, KNOX Security, Samsung Research America.
1265 * Fix potential memory leak in mbedtls_x509_crl_parse(). The leak was caused
1266 by missing calls to mbedtls_pem_free() in cases when a
1267 MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT error was encountered. Found and
1268 fix proposed by Guido Vranken. #722
1269 * Fixed the templates used to generate project and solution files for Visual
1270 Studio 2015 as well as the files themselves, to remove a build warning
1271 generated in Visual Studio 2015. Reported by Steve Valliere. #742
1272 * Fix a resource leak in ssl_cookie, when using MBEDTLS_THREADING_C.
1273 Raised and fix suggested by Alan Gillingham in the mbed TLS forum. #771
1274 * Fix 1 byte buffer overflow in mbedtls_mpi_write_string() when the MPI
1275 number to write in hexadecimal is negative and requires an odd number of
1276 digits. Found and fixed by Guido Vranken.
1277 * Fix unlisted DES configuration dependency in some pkparse test cases. Found
1278 by inestlerode. #555
1280 = mbed TLS 2.4.1 branch released 2016-12-13
1283 * Update to CMAC test data, taken from - NIST Special Publication 800-38B -
1284 Recommendation for Block Cipher Modes of Operation: The CMAC Mode for
1285 Authentication – October 2016
1287 = mbed TLS 2.4.0 branch released 2016-10-17
1290 * Removed the MBEDTLS_SSL_AEAD_RANDOM_IV option, because it was not compliant
1291 with RFC-5116 and could lead to session key recovery in very long TLS
1292 sessions. "Nonce-Disrespecting Adversaries Practical Forgery Attacks on GCM in
1293 TLS" - H. Bock, A. Zauner, S. Devlin, J. Somorovsky, P. Jovanovic.
1294 https://eprint.iacr.org/2016/475.pdf
1295 * Fixed potential stack corruption in mbedtls_x509write_crt_der() and
1296 mbedtls_x509write_csr_der() when the signature is copied to the buffer
1297 without checking whether there is enough space in the destination. The
1298 issue cannot be triggered remotely. Found by Jethro Beekman.
1301 * Added support for CMAC for AES and 3DES and AES-CMAC-PRF-128, as defined by
1302 NIST SP 800-38B, RFC-4493 and RFC-4615.
1303 * Added hardware entropy selftest to verify that the hardware entropy source
1304 is functioning correctly.
1305 * Added a script to print build environment info for diagnostic use in test
1306 scripts, which is also now called by all.sh.
1307 * Added the macro MBEDTLS_X509_MAX_FILE_PATH_LEN that enables the user to
1308 configure the maximum length of a file path that can be buffered when
1309 calling mbedtls_x509_crt_parse_path().
1310 * Added a configuration file config-no-entropy.h that configures the subset of
1311 library features that do not require an entropy source.
1312 * Added the macro MBEDTLS_ENTROPY_MIN_HARDWARE in config.h. This allows users
1313 to configure the minimum number of bytes for entropy sources using the
1314 mbedtls_hardware_poll() function.
1317 * Fix for platform time abstraction to avoid dependency issues where a build
1318 may need time but not the standard C library abstraction, and added
1319 configuration consistency checks to check_config.h
1320 * Fix dependency issue in Makefile to allow parallel builds.
1321 * Fix incorrect handling of block lengths in crypt_and_hash.c sample program,
1322 when GCM is used. Found by udf2457. #441
1323 * Fix for key exchanges based on ECDH-RSA or ECDH-ECDSA which weren't
1324 enabled unless others were also present. Found by David Fernandez. #428
1325 * Fix for out-of-tree builds using CMake. Found by jwurzer, and fix based on
1326 a contribution from Tobias Tangemann. #541
1327 * Fixed cert_app.c sample program for debug output and for use when no root
1328 certificates are provided.
1329 * Fix conditional statement that would cause a 1 byte overread in
1330 mbedtls_asn1_get_int(). Found and fixed by Guido Vranken. #599
1331 * Fixed pthread implementation to avoid unintended double initialisations
1332 and double frees. Found by Niklas Amnebratt.
1333 * Fixed the sample applications gen_key.c, cert_req.c and cert_write.c for
1334 builds where the configuration MBEDTLS_PEM_WRITE_C is not defined. Found
1335 by inestlerode. #559.
1336 * Fix mbedtls_x509_get_sig() to update the ASN1 type in the mbedtls_x509_buf
1337 data structure until after error checks are successful. Found by
1339 * Fix documentation and implementation missmatch for function arguments of
1340 mbedtls_gcm_finish(). Found by cmiatpaar. #602
1341 * Guarantee that P>Q at RSA key generation. Found by inestlerode. #558
1342 * Fix potential byte overread when verifying malformed SERVER_HELLO in
1343 ssl_parse_hello_verify_request() for DTLS. Found by Guido Vranken.
1344 * Fix check for validity of date when parsing in mbedtls_x509_get_time().
1345 Found by subramanyam-c. #626
1346 * Fix compatibility issue with Internet Explorer client authentication,
1347 where the limited hash choices prevented the client from sending its
1348 certificate. Found by teumas. #513
1349 * Fix compilation without MBEDTLS_SELF_TEST enabled.
1352 * Extended test coverage of special cases, and added new timing test suite.
1353 * Removed self-tests from the basic-built-test.sh script, and added all
1354 missing self-tests to the test suites, to ensure self-tests are only
1356 * Added support for 3 and 4 byte lengths to mbedtls_asn1_write_len().
1357 * Added support for a Yotta specific configuration file -
1358 through the symbol YOTTA_CFG_MBEDTLS_TARGET_CONFIG_FILE.
1359 * Added optimization for code space for X.509/OID based on configured
1360 features. Contributed by Aviv Palivoda.
1361 * Renamed source file library/net.c to library/net_sockets.c to avoid
1362 naming collision in projects which also have files with the common name
1363 net.c. For consistency, the corresponding header file, net.h, is marked as
1364 deprecated, and its contents moved to net_sockets.h.
1365 * Changed the strategy for X.509 certificate parsing and validation, to no
1366 longer disregard certificates with unrecognised fields.
1368 = mbed TLS 2.3.0 branch released 2016-06-28
1371 * Fix missing padding length check in mbedtls_rsa_rsaes_pkcs1_v15_decrypt
1372 required by PKCS1 v2.2
1373 * Fix potential integer overflow to buffer overflow in
1374 mbedtls_rsa_rsaes_pkcs1_v15_encrypt and mbedtls_rsa_rsaes_oaep_encrypt
1375 (not triggerable remotely in (D)TLS).
1376 * Fix a potential integer underflow to buffer overread in
1377 mbedtls_rsa_rsaes_oaep_decrypt. It is not triggerable remotely in
1381 * Support for platform abstraction of the standard C library time()
1385 * Fix bug in mbedtls_mpi_add_mpi() that caused wrong results when the three
1386 arguments where the same (in-place doubling). Found and fixed by Janos
1388 * Fix potential build failures related to the 'apidoc' target, introduced
1389 in the previous patch release. Found by Robert Scheck. #390 #391
1390 * Fix issue in Makefile that prevented building using armar. #386
1391 * Fix memory leak that occurred only when ECJPAKE was enabled and ECDHE and
1392 ECDSA was disabled in config.h . The leak didn't occur by default.
1393 * Fix an issue that caused valid certificates to be rejected whenever an
1394 expired or not yet valid certificate was parsed before a valid certificate
1395 in the trusted certificate list.
1396 * Fix bug in mbedtls_x509_crt_parse that caused trailing extra data in the
1397 buffer after DER certificates to be included in the raw representation.
1398 * Fix issue that caused a hang when generating RSA keys of odd bitlength
1399 * Fix bug in mbedtls_rsa_rsaes_pkcs1_v15_encrypt that made null pointer
1400 dereference possible.
1401 * Fix issue that caused a crash if invalid curves were passed to
1402 mbedtls_ssl_conf_curves. #373
1403 * Fix issue in ssl_fork_server which was preventing it from functioning. #429
1404 * Fix memory leaks in test framework
1405 * Fix test in ssl-opt.sh that does not run properly with valgrind
1406 * Fix unchecked calls to mmbedtls_md_setup(). Fix by Brian Murray. #502
1409 * On ARM platforms, when compiling with -O0 with GCC, Clang or armcc5,
1410 don't use the optimized assembly for bignum multiplication. This removes
1411 the need to pass -fomit-frame-pointer to avoid a build error with -O0.
1412 * Disabled SSLv3 in the default configuration.
1413 * Optimized mbedtls_mpi_zeroize() for MPI integer size. (Fix by Alexey
1415 * Fix non-compliance server extension handling. Extensions for SSLv3 are now
1416 ignored, as required by RFC6101.
1418 = mbed TLS 2.2.1 released 2016-01-05
1421 * Fix potential double free when mbedtls_asn1_store_named_data() fails to
1422 allocate memory. Only used for certificate generation, not triggerable
1423 remotely in SSL/TLS. Found by Rafał Przywara. #367
1424 * Disable MD5 handshake signatures in TLS 1.2 by default to prevent the
1425 SLOTH attack on TLS 1.2 server authentication (other attacks from the
1426 SLOTH paper do not apply to any version of mbed TLS or PolarSSL).
1427 https://www.mitls.org/pages/attacks/SLOTH
1430 * Fix over-restrictive length limit in GCM. Found by Andreas-N. #362
1431 * Fix bug in certificate validation that caused valid chains to be rejected
1432 when the first intermediate certificate has pathLenConstraint=0. Found by
1433 Nicholas Wilson. Introduced in mbed TLS 2.2.0. #280
1434 * Removed potential leak in mbedtls_rsa_rsassa_pkcs1_v15_sign(), found by
1435 JayaraghavendranK. #372
1436 * Fix suboptimal handling of unexpected records that caused interop issues
1437 with some peers over unreliable links. Avoid dropping an entire DTLS
1438 datagram if a single record in a datagram is unexpected, instead only
1439 drop the record and look at subsequent records (if any are present) in
1440 the same datagram. Found by jeannotlapin. #345
1442 = mbed TLS 2.2.0 released 2015-11-04
1445 * Fix potential double free if mbedtls_ssl_conf_psk() is called more than
1446 once and some allocation fails. Cannot be forced remotely. Found by Guido
1447 Vranken, Intelworks.
1448 * Fix potential heap corruption on Windows when
1449 mbedtls_x509_crt_parse_path() is passed a path longer than 2GB. Cannot be
1450 triggered remotely. Found by Guido Vranken, Intelworks.
1451 * Fix potential buffer overflow in some asn1_write_xxx() functions.
1452 Cannot be triggered remotely unless you create X.509 certificates based
1453 on untrusted input or write keys of untrusted origin. Found by Guido
1454 Vranken, Intelworks.
1455 * The X509 max_pathlen constraint was not enforced on intermediate
1456 certificates. Found by Nicholas Wilson, fix and tests provided by
1457 Janos Follath. #280 and #319
1460 * Experimental support for EC J-PAKE as defined in Thread 1.0.0.
1461 Disabled by default as the specification might still change.
1462 * Added a key extraction callback to accees the master secret and key
1463 block. (Potential uses include EAP-TLS and Thread.)
1466 * Self-signed certificates were not excluded from pathlen counting,
1467 resulting in some valid X.509 being incorrectly rejected. Found and fix
1468 provided by Janos Follath. #319
1469 * Fix build error with configurations where ECDHE-PSK is the only key
1470 exchange. Found and fix provided by Chris Hammond. #270
1471 * Fix build error with configurations where RSA, RSA-PSK, ECDH-RSA or
1472 ECHD-ECDSA if the only key exchange. Multiple reports. #310
1473 * Fixed a bug causing some handshakes to fail due to some non-fatal alerts
1474 not being properly ignored. Found by mancha and Kasom Koht-arsa, #308
1475 * mbedtls_x509_crt_verify(_with_profile)() now also checks the key type and
1476 size/curve against the profile. Before that, there was no way to set a
1477 minimum key size for end-entity certificates with RSA keys. Found by
1478 Matthew Page of Scannex Electronics Ltd.
1479 * Fix failures in MPI on Sparc(64) due to use of bad assembly code.
1480 Found by Kurt Danielson. #292
1481 * Fix typo in name of the extKeyUsage OID. Found by inestlerode, #314
1482 * Fix bug in ASN.1 encoding of booleans that caused generated CA
1483 certificates to be rejected by some applications, including OS X
1484 Keychain. Found and fixed by Jonathan Leroy, Inikup.
1487 * Improved performance of mbedtls_ecp_muladd() when one of the scalars is 1
1490 = mbed TLS 2.1.2 released 2015-10-06
1493 * Added fix for CVE-2015-5291 to prevent heap corruption due to buffer
1494 overflow of the hostname or session ticket. Found by Guido Vranken,
1496 * Fix potential double-free if mbedtls_ssl_set_hs_psk() is called more than
1497 once in the same handhake and mbedtls_ssl_conf_psk() was used.
1498 Found and patch provided by Guido Vranken, Intelworks. Cannot be forced
1500 * Fix stack buffer overflow in pkcs12 decryption (used by
1501 mbedtls_pk_parse_key(file)() when the password is > 129 bytes.
1502 Found by Guido Vranken, Intelworks. Not triggerable remotely.
1503 * Fix potential buffer overflow in mbedtls_mpi_read_string().
1504 Found by Guido Vranken, Intelworks. Not exploitable remotely in the context
1505 of TLS, but might be in other uses. On 32 bit machines, requires reading a
1506 string of close to or larger than 1GB to exploit; on 64 bit machines, would
1507 require reading a string of close to or larger than 2^62 bytes.
1508 * Fix potential random memory allocation in mbedtls_pem_read_buffer()
1509 on crafted PEM input data. Found and fix provided by Guido Vranken,
1510 Intelworks. Not triggerable remotely in TLS. Triggerable remotely if you
1511 accept PEM data from an untrusted source.
1512 * Fix possible heap buffer overflow in base64_encoded() when the input
1513 buffer is 512MB or larger on 32-bit platforms. Found by Guido Vranken,
1514 Intelworks. Not trigerrable remotely in TLS.
1515 * Fix potential double-free if mbedtls_conf_psk() is called repeatedly on
1516 the same mbedtls_ssl_config object and memory allocation fails. Found by
1517 Guido Vranken, Intelworks. Cannot be forced remotely.
1518 * Fix potential heap buffer overflow in servers that perform client
1519 authentication against a crafted CA cert. Cannot be triggered remotely
1520 unless you allow third parties to pick trust CAs for client auth.
1521 Found by Guido Vranken, Intelworks.
1524 * Fix compile error in net.c with musl libc. Found and patch provided by
1526 * Fix macroization of 'inline' keyword when building as C++. (#279)
1529 * Added checking of hostname length in mbedtls_ssl_set_hostname() to ensure
1530 domain names are compliant with RFC 1035.
1531 * Fixed paths for check_config.h in example config files. (Found by bachp)
1534 = mbed TLS 2.1.1 released 2015-09-17
1537 * Add countermeasure against Lenstra's RSA-CRT attack for PKCS#1 v1.5
1538 signatures. (Found by Florian Weimer, Red Hat.)
1539 https://securityblog.redhat.com/2015/09/02/factoring-rsa-keys-with-tls-perfect-forward-secrecy/
1540 * Fix possible client-side NULL pointer dereference (read) when the client
1541 tries to continue the handshake after it failed (a misuse of the API).
1542 (Found and patch provided by Fabian Foerg, Gotham Digital Science using
1546 * Fix warning when using a 64bit platform. (found by embedthis) (#275)
1547 * Fix off-by-one error in parsing Supported Point Format extension that
1548 caused some handshakes to fail.
1551 * Made X509 profile pointer const in mbedtls_ssl_conf_cert_profile() to allow
1552 use of mbedtls_x509_crt_profile_next. (found by NWilson)
1553 * When a client initiates a reconnect from the same port as a live
1554 connection, if cookie verification is available
1555 (MBEDTLS_SSL_DTLS_HELLO_VERIFY defined in config.h, and usable cookie
1556 callbacks set with mbedtls_ssl_conf_dtls_cookies()), this will be
1557 detected and mbedtls_ssl_read() will return
1558 MBEDTLS_ERR_SSL_CLIENT_RECONNECT - it is then possible to start a new
1559 handshake with the same context. (See RFC 6347 section 4.2.8.)
1561 = mbed TLS 2.1.0 released 2015-09-04
1564 * Added support for yotta as a build system.
1565 * Primary open source license changed to Apache 2.0 license.
1568 * Fix segfault in the benchmark program when benchmarking DHM.
1569 * Fix build error with CMake and pre-4.5 versions of GCC (found by Hugo
1571 * Fix bug when parsing a ServerHello without extensions (found by David
1573 * Fix bug in CMake lists that caused libmbedcrypto.a not to be installed
1574 (found by Benoit Lecocq).
1575 * Fix bug in Makefile that caused libmbedcrypto and libmbedx509 not to be
1576 installed (found by Rawi666).
1577 * Fix compile error with armcc 5 with --gnu option.
1578 * Fix bug in Makefile that caused programs not to be installed correctly
1579 (found by robotanarchy) (#232).
1580 * Fix bug in Makefile that prevented from installing without building the
1581 tests (found by robotanarchy) (#232).
1582 * Fix missing -static-libgcc when building shared libraries for Windows
1584 * Fix link error when building shared libraries for Windows with make.
1585 * Fix error when loading libmbedtls.so.
1586 * Fix bug in mbedtls_ssl_conf_default() that caused the default preset to
1587 be always used (found by dcb314) (#235)
1588 * Fix bug in mbedtls_rsa_public() and mbedtls_rsa_private() that could
1589 result trying to unlock an unlocked mutex on invalid input (found by
1590 Fredrik Axelsson) (#257)
1591 * Fix -Wshadow warnings (found by hnrkp) (#240)
1592 * Fix memory corruption on client with overlong PSK identity, around
1593 SSL_MAX_CONTENT_LEN or higher - not triggerrable remotely (found by
1594 Aleksandrs Saveljevs) (#238)
1595 * Fix unused function warning when using MBEDTLS_MDx_ALT or
1596 MBEDTLS_SHAxxx_ALT (found by Henrik) (#239)
1597 * Fix memory corruption in pkey programs (found by yankuncheng) (#210)
1600 * The PEM parser now accepts a trailing space at end of lines (#226).
1601 * It is now possible to #include a user-provided configuration file at the
1602 end of the default config.h by defining MBEDTLS_USER_CONFIG_FILE on the
1603 compiler's command line.
1604 * When verifying a certificate chain, if an intermediate certificate is
1605 trusted, no later cert is checked. (suggested by hannes-landeholm)
1607 * Prepend a "thread identifier" to debug messages (issue pointed out by
1608 Hugo Leisink) (#210).
1609 * Add mbedtls_ssl_get_max_frag_len() to query the current maximum fragment
1612 = mbed TLS 2.0.0 released 2015-07-13
1615 * Support for DTLS 1.0 and 1.2 (RFC 6347).
1616 * Ability to override core functions from MDx, SHAx, AES and DES modules
1617 with custom implementation (eg hardware accelerated), complementing the
1618 ability to override the whole module.
1619 * New server-side implementation of session tickets that rotate keys to
1620 preserve forward secrecy, and allows sharing across multiple contexts.
1621 * Added a concept of X.509 cerificate verification profile that controls
1622 which algorithms and key sizes (curves for ECDSA) are acceptable.
1623 * Expanded configurability of security parameters in the SSL module with
1624 mbedtls_ssl_conf_dhm_min_bitlen() and mbedtls_ssl_conf_sig_hashes().
1625 * Introduced a concept of presets for SSL security-relevant configuration
1629 * The library has been split into libmbedcrypto, libmbedx509, libmbedtls.
1630 You now need to link to all of them if you use TLS for example.
1631 * All public identifiers moved to the mbedtls_* or MBEDTLS_* namespace.
1632 Some names have been further changed to make them more consistent.
1633 Migration helpers scripts/rename.pl and include/mbedtls/compat-1.3.h are
1634 provided. Full list of renamings in scripts/data_files/rename-1.3-2.0.txt
1635 * Renamings of fields inside structures, not covered by the previous list:
1636 mbedtls_cipher_info_t.key_length -> key_bitlen
1637 mbedtls_cipher_context_t.key_length -> key_bitlen
1638 mbedtls_ecp_curve_info.size -> bit_size
1639 * Headers are now found in the 'mbedtls' directory (previously 'polarssl').
1640 * The following _init() functions that could return errors have
1641 been split into an _init() that returns void and another function that
1642 should generally be the first function called on this context after init:
1643 mbedtls_ssl_init() -> mbedtls_ssl_setup()
1644 mbedtls_ccm_init() -> mbedtls_ccm_setkey()
1645 mbedtls_gcm_init() -> mbedtls_gcm_setkey()
1646 mbedtls_hmac_drbg_init() -> mbedtls_hmac_drbg_seed(_buf)()
1647 mbedtls_ctr_drbg_init() -> mbedtls_ctr_drbg_seed()
1648 Note that for mbedtls_ssl_setup(), you need to be done setting up the
1649 ssl_config structure before calling it.
1650 * Most ssl_set_xxx() functions (all except ssl_set_bio(), ssl_set_hostname(),
1651 ssl_set_session() and ssl_set_client_transport_id(), plus
1652 ssl_legacy_renegotiation()) have been renamed to mbedtls_ssl_conf_xxx()
1653 (see rename.pl and compat-1.3.h above) and their first argument's type
1654 changed from ssl_context to ssl_config.
1655 * ssl_set_bio() changed signature (contexts merged, order switched, one
1656 additional callback for read-with-timeout).
1657 * The following functions have been introduced and must be used in callback
1658 implementations (SNI, PSK) instead of their *conf counterparts:
1659 mbedtls_ssl_set_hs_own_cert()
1660 mbedtls_ssl_set_hs_ca_chain()
1661 mbedtls_ssl_set_hs_psk()
1662 * mbedtls_ssl_conf_ca_chain() lost its last argument (peer_cn), now set
1663 using mbedtls_ssl_set_hostname().
1664 * mbedtls_ssl_conf_session_cache() changed prototype (only one context
1665 pointer, parameters reordered).
1666 * On server, mbedtls_ssl_conf_session_tickets_cb() must now be used in
1667 place of mbedtls_ssl_conf_session_tickets() to enable session tickets.
1668 * The SSL debug callback gained two new arguments (file name, line number).
1669 * Debug modes were removed.
1670 * mbedtls_ssl_conf_truncated_hmac() now returns void.
1671 * mbedtls_memory_buffer_alloc_init() now returns void.
1672 * X.509 verification flags are now an uint32_t. Affect the signature of:
1673 mbedtls_ssl_get_verify_result()
1674 mbedtls_x509_ctr_verify_info()
1675 mbedtls_x509_crt_verify() (flags, f_vrfy -> needs to be updated)
1676 mbedtls_ssl_conf_verify() (f_vrfy -> needs to be updated)
1677 * The following functions changed prototype to avoid an in-out length
1679 mbedtls_base64_encode()
1680 mbedtls_base64_decode()
1681 mbedtls_mpi_write_string()
1682 mbedtls_dhm_calc_secret()
1683 * In the NET module, all "int" and "int *" arguments for file descriptors
1684 changed type to "mbedtls_net_context *".
1685 * net_accept() gained new arguments for the size of the client_ip buffer.
1686 * In the threading layer, mbedtls_mutex_init() and mbedtls_mutex_free() now
1688 * ecdsa_write_signature() gained an additional md_alg argument and
1689 ecdsa_write_signature_det() was deprecated.
1690 * pk_sign() no longer accepts md_alg == POLARSSL_MD_NONE with ECDSA.
1691 * Last argument of x509_crt_check_key_usage() and
1692 mbedtls_x509write_crt_set_key_usage() changed from int to unsigned.
1693 * test_ca_list (from certs.h) is renamed to test_cas_pem and is only
1694 available if POLARSSL_PEM_PARSE_C is defined (it never worked without).
1695 * Test certificates in certs.c are no longer guaranteed to be nul-terminated
1696 strings; use the new *_len variables instead of strlen().
1697 * Functions mbedtls_x509_xxx_parse(), mbedtls_pk_parse_key(),
1698 mbedtls_pk_parse_public_key() and mbedtls_dhm_parse_dhm() now expect the
1699 length parameter to include the terminating null byte for PEM input.
1700 * Signature of mpi_mul_mpi() changed to make the last argument unsigned
1701 * calloc() is now used instead of malloc() everywhere. API of platform
1702 layer and the memory_buffer_alloc module changed accordingly.
1703 (Thanks to Mansour Moufid for helping with the replacement.)
1704 * Change SSL_DISABLE_RENEGOTIATION config.h flag to SSL_RENEGOTIATION
1705 (support for renegotiation now needs explicit enabling in config.h).
1706 * Split MBEDTLS_HAVE_TIME into MBEDTLS_HAVE_TIME and MBEDTLS_HAVE_TIME_DATE
1708 * net_connect() and net_bind() have a new 'proto' argument to choose
1709 between TCP and UDP, using the macros NET_PROTO_TCP or NET_PROTO_UDP.
1710 Their 'port' argument type is changed to a string.
1711 * Some constness fixes
1714 * Removed mbedtls_ecp_group_read_string(). Only named groups are supported.
1715 * Removed mbedtls_ecp_sub() and mbedtls_ecp_add(), use
1716 mbedtls_ecp_muladd().
1717 * Removed individual mdX_hmac, shaX_hmac, mdX_file and shaX_file functions
1718 (use generic functions from md.h)
1719 * Removed mbedtls_timing_msleep(). Use mbedtls_net_usleep() or a custom
1721 * Removed test DHM parameters from the test certs module.
1722 * Removed the PBKDF2 module (use PKCS5).
1723 * Removed POLARSSL_ERROR_STRERROR_BC (use mbedtls_strerror()).
1724 * Removed compat-1.2.h (helper for migrating from 1.2 to 1.3).
1725 * Removed openssl.h (very partial OpenSSL compatibility layer).
1726 * Configuration options POLARSSL_HAVE_LONGLONG was removed (now always on).
1727 * Configuration options POLARSSL_HAVE_INT8 and POLARSSL_HAVE_INT16 have
1728 been removed (compiler is required to support 32-bit operations).
1729 * Configuration option POLARSSL_HAVE_IPV6 was removed (always enabled).
1730 * Removed test program o_p_test, the script compat.sh does more.
1731 * Removed test program ssl_test, superseded by ssl-opt.sh.
1732 * Removed helper script active-config.pl
1735 * md_init_ctx() is deprecated in favour of md_setup(), that adds a third
1736 argument (allowing memory savings if HMAC is not used)
1738 Semi-API changes (technically public, morally private)
1739 * Renamed a few headers to include _internal in the name. Those headers are
1740 not supposed to be included by users.
1741 * Changed md_info_t into an opaque structure (use md_get_xxx() accessors).
1742 * Changed pk_info_t into an opaque structure.
1743 * Changed cipher_base_t into an opaque structure.
1744 * Removed sig_oid2 and rename sig_oid1 to sig_oid in x509_crt and x509_crl.
1745 * x509_crt.key_usage changed from unsigned char to unsigned int.
1746 * Removed r and s from ecdsa_context
1747 * Removed mode from des_context and des3_context
1749 Default behavior changes
1750 * The default minimum TLS version is now TLS 1.0.
1751 * RC4 is now blacklisted by default in the SSL/TLS layer, and excluded from the
1752 default ciphersuite list returned by ssl_list_ciphersuites()
1753 * Support for receiving SSLv2 ClientHello is now disabled by default at
1755 * The default authmode for SSL/TLS clients is now REQUIRED.
1756 * Support for RSA_ALT contexts in the PK layer is now optional. Since is is
1757 enabled in the default configuration, this is only noticeable if using a
1759 * Default DHM parameters server-side upgraded from 1024 to 2048 bits.
1760 * A minimum RSA key size of 2048 bits is now enforced during ceritificate
1762 * Negotiation of truncated HMAC is now disabled by default on server too.
1763 * The following functions are now case-sensitive:
1764 mbedtls_cipher_info_from_string()
1765 mbedtls_ecp_curve_info_from_name()
1766 mbedtls_md_info_from_string()
1767 mbedtls_ssl_ciphersuite_from_string()
1768 mbedtls_version_check_feature()
1771 * The minimum MSVC version required is now 2010 (better C99 support).
1772 * The NET layer now unconditionnaly relies on getaddrinfo() and select().
1773 * Compiler is required to support C99 types such as long long and uint32_t.
1775 API changes from the 1.4 preview branch
1776 * ssl_set_bio_timeout() was removed, split into mbedtls_ssl_set_bio() with
1777 new prototype, and mbedtls_ssl_set_read_timeout().
1778 * The following functions now return void:
1779 mbedtls_ssl_conf_transport()
1780 mbedtls_ssl_conf_max_version()
1781 mbedtls_ssl_conf_min_version()
1782 * DTLS no longer hard-depends on TIMING_C, but uses a callback interface
1783 instead, see mbedtls_ssl_set_timer_cb(), with the Timing module providing
1784 an example implementation, see mbedtls_timing_delay_context and
1785 mbedtls_timing_set/get_delay().
1786 * With UDP sockets, it is no longer necessary to call net_bind() again
1787 after a successful net_accept().
1790 * mbedtls_ctr_drbg_random() and mbedtls_hmac_drbg_random() are now
1791 thread-safe if MBEDTLS_THREADING_C is enabled.
1792 * Reduced ROM fooprint of SHA-256 and added an option to reduce it even
1793 more (at the expense of performance) MBEDTLS_SHA256_SMALLER.
1795 = mbed TLS 1.3 branch
1798 * With authmode set to SSL_VERIFY_OPTIONAL, verification of keyUsage and
1799 extendedKeyUsage on the leaf certificate was lost (results not accessible
1800 via ssl_get_verify_results()).
1801 * Add countermeasure against "Lucky 13 strikes back" cache-based attack,
1802 https://dl.acm.org/citation.cfm?id=2714625
1805 * Improve ECC performance by using more efficient doubling formulas
1806 (contributed by Peter Dettman).
1807 * Add x509_crt_verify_info() to display certificate verification results.
1808 * Add support for reading DH parameters with privateValueLength included
1809 (contributed by Daniel Kahn Gillmor).
1810 * Add support for bit strings in X.509 names (request by Fredrik Axelsson).
1811 * Add support for id-at-uniqueIdentifier in X.509 names.
1812 * Add support for overriding snprintf() (except on Windows) and exit() in
1814 * Add an option to use macros instead of function pointers in the platform
1815 layer (helps get rid of unwanted references).
1816 * Improved Makefiles for Windows targets by fixing library targets and making
1817 cross-compilation easier (thanks to Alon Bar-Lev).
1818 * The benchmark program also prints heap usage for public-key primitives
1819 if POLARSSL_MEMORY_BUFFER_ALLOC_C and POLARSSL_MEMORY_DEBUG are defined.
1820 * New script ecc-heap.sh helps measuring the impact of ECC parameters on
1821 speed and RAM (heap only for now) usage.
1822 * New script memory.sh helps measuring the ROM and RAM requirements of two
1823 reduced configurations (PSK-CCM and NSA suite B).
1824 * Add config flag POLARSSL_DEPRECATED_WARNING (off by default) to produce
1825 warnings on use of deprecated functions (with GCC and Clang only).
1826 * Add config flag POLARSSL_DEPRECATED_REMOVED (off by default) to produce
1827 errors on use of deprecated functions.
1830 * Fix compile errors with PLATFORM_NO_STD_FUNCTIONS.
1831 * Fix compile error with PLATFORM_EXIT_ALT (thanks to Rafał Przywara).
1832 * Fix bug in entropy.c when THREADING_C is also enabled that caused
1833 entropy_free() to crash (thanks to Rafał Przywara).
1834 * Fix memory leak when gcm_setkey() and ccm_setkey() are used more than
1835 once on the same context.
1836 * Fix bug in ssl_mail_client when password is longer that username (found
1838 * Fix undefined behaviour (memcmp( NULL, NULL, 0 );) in X.509 modules
1839 (detected by Clang's 3.6 UBSan).
1840 * mpi_size() and mpi_msb() would segfault when called on an mpi that is
1841 initialized but not set (found by pravic).
1842 * Fix detection of support for getrandom() on Linux (reported by syzzer) by
1843 doing it at runtime (using uname) rather that compile time.
1844 * Fix handling of symlinks by "make install" (found by Gaël PORTAY).
1845 * Fix potential NULL pointer dereference (not trigerrable remotely) when
1846 ssl_write() is called before the handshake is finished (introduced in
1847 1.3.10) (first reported by Martin Blumenstingl).
1848 * Fix bug in pk_parse_key() that caused some valid private EC keys to be
1850 * Fix bug in Via Padlock support (found by Nikos Mavrogiannopoulos).
1851 * Fix thread safety bug in RSA operations (found by Fredrik Axelsson).
1852 * Fix hardclock() (only used in the benchmarking program) with some
1853 versions of mingw64 (found by kxjhlele).
1854 * Fix warnings from mingw64 in timing.c (found by kxjklele).
1855 * Fix potential unintended sign extension in asn1_get_len() on 64-bit
1857 * Fix potential memory leak in ssl_set_psk() (found by Mansour Moufid).
1858 * Fix compile error when POLARSSL_SSL_DISABLE_RENEGOTATION and
1859 POLARSSL_SSL_SSESSION_TICKETS where both enabled in config.h (introduced
1861 * Add missing extern "C" guard in aesni.h (reported by amir zamani).
1862 * Add missing dependency on SHA-256 in some x509 programs (reported by
1864 * Fix bug related to ssl_set_curves(): the client didn't check that the
1865 curve picked by the server was actually allowed.
1868 * Remove bias in mpi_gen_prime (contributed by Pascal Junod).
1869 * Remove potential sources of timing variations (some contributed by Pascal
1871 * Options POLARSSL_HAVE_INT8 and POLARSSL_HAVE_INT16 are deprecated.
1872 * Enabling POLARSSL_NET_C without POLARSSL_HAVE_IPV6 is deprecated.
1873 * compat-1.2.h and openssl.h are deprecated.
1874 * Adjusting/overriding CFLAGS and LDFLAGS with the make build system is now
1875 more flexible (warning: OFLAGS is not used any more) (see the README)
1876 (contributed by Alon Bar-Lev).
1877 * ssl_set_own_cert() no longer calls pk_check_pair() since the
1878 performance impact was bad for some users (this was introduced in 1.3.10).
1879 * Move from SHA-1 to SHA-256 in example programs using signatures
1880 (suggested by Thorsten Mühlfelder).
1881 * Remove some unneeded inclusions of header files from the standard library
1882 "minimize" others (eg use stddef.h if only size_t is needed).
1883 * Change #include lines in test files to use double quotes instead of angle
1884 brackets for uniformity with the rest of the code.
1885 * Remove dependency on sscanf() in X.509 parsing modules.
1887 = mbed TLS 1.3.10 released 2015-02-09
1889 * NULL pointer dereference in the buffer-based allocator when the buffer is
1890 full and polarssl_free() is called (found by Mark Hasemeyer)
1891 (only possible if POLARSSL_MEMORY_BUFFER_ALLOC_C is enabled, which it is
1893 * Fix remotely-triggerable uninitialised pointer dereference caused by
1894 crafted X.509 certificate (TLS server is not affected if it doesn't ask for a
1895 client certificate) (found using Codenomicon Defensics).
1896 * Fix remotely-triggerable memory leak caused by crafted X.509 certificates
1897 (TLS server is not affected if it doesn't ask for a client certificate)
1898 (found using Codenomicon Defensics).
1899 * Fix potential stack overflow while parsing crafted X.509 certificates
1900 (TLS server is not affected if it doesn't ask for a client certificate)
1901 (found using Codenomicon Defensics).
1902 * Fix timing difference that could theoretically lead to a
1903 Bleichenbacher-style attack in the RSA and RSA-PSK key exchanges
1904 (reported by Sebastian Schinzel).
1907 * Add support for FALLBACK_SCSV (draft-ietf-tls-downgrade-scsv).
1908 * Add support for Extended Master Secret (draft-ietf-tls-session-hash).
1909 * Add support for Encrypt-then-MAC (RFC 7366).
1910 * Add function pk_check_pair() to test if public and private keys match.
1911 * Add x509_crl_parse_der().
1912 * Add compile-time option POLARSSL_X509_MAX_INTERMEDIATE_CA to limit the
1913 length of an X.509 verification chain.
1914 * Support for renegotiation can now be disabled at compile-time
1915 * Support for 1/n-1 record splitting, a countermeasure against BEAST.
1916 * Certificate selection based on signature hash, preferring SHA-1 over SHA-2
1917 for pre-1.2 clients when multiple certificates are available.
1918 * Add support for getrandom() syscall on recent Linux kernels with Glibc or
1919 a compatible enough libc (eg uClibc).
1920 * Add ssl_set_arc4_support() to make it easier to disable RC4 at runtime
1921 while using the default ciphersuite list.
1922 * Added new error codes and debug messages about selection of
1923 ciphersuite/certificate.
1926 * Stack buffer overflow if ctr_drbg_update() is called with too large
1927 add_len (found by Jean-Philippe Aumasson) (not triggerable remotely).
1928 * Possible buffer overflow of length at most POLARSSL_MEMORY_ALIGN_MULTIPLE
1929 if memory_buffer_alloc_init() was called with buf not aligned and len not
1930 a multiple of POLARSSL_MEMORY_ALIGN_MULTIPLE (not triggerable remotely).
1931 * User set CFLAGS were ignored by Cmake with gcc (introduced in 1.3.9, found
1933 * Fix potential undefined behaviour in Camellia.
1934 * Fix potential failure in ECDSA signatures when POLARSSL_ECP_MAX_BITS is a
1935 multiple of 8 (found by Gergely Budai).
1936 * Fix unchecked return code in x509_crt_parse_path() on Windows (found by
1938 * Fix assembly selection for MIPS64 (thanks to James Cowgill).
1939 * ssl_get_verify_result() now works even if the handshake was aborted due
1940 to a failed verification (found by Fredrik Axelsson).
1941 * Skip writing and parsing signature_algorithm extension if none of the
1942 key exchanges enabled needs certificates. This fixes a possible interop
1943 issue with some servers when a zero-length extension was sent. (Reported
1945 * On a 0-length input, base64_encode() did not correctly set output length
1946 (found by Hendrik van den Boogaard).
1949 * Use deterministic nonces for AEAD ciphers in TLS by default (possible to
1950 switch back to random with POLARSSL_SSL_AEAD_RANDOM_IV in config.h).
1951 * Blind RSA private operations even when POLARSSL_RSA_NO_CRT is defined.
1952 * ssl_set_own_cert() now returns an error on key-certificate mismatch.
1953 * Forbid repeated extensions in X.509 certificates.
1954 * debug_print_buf() now prints a text view in addition to hexadecimal.
1955 * A specific error is now returned when there are ciphersuites in common
1956 but none of them is usable due to external factors such as no certificate
1957 with a suitable (extended)KeyUsage or curve or no PSK set.
1958 * It is now possible to disable negotiation of truncated HMAC server-side
1959 at runtime with ssl_set_truncated_hmac().
1960 * Example programs for SSL client and server now disable SSLv3 by default.
1961 * Example programs for SSL client and server now disable RC4 by default.
1962 * Use platform.h in all test suites and programs.
1964 = PolarSSL 1.3.9 released 2014-10-20
1966 * Lowest common hash was selected from signature_algorithms extension in
1967 TLS 1.2 (found by Darren Bane) (introduced in 1.3.8).
1968 * Remotely-triggerable memory leak when parsing some X.509 certificates
1969 (server is not affected if it doesn't ask for a client certificate)
1970 (found using Codenomicon Defensics).
1971 * Remotely-triggerable memory leak when parsing crafted ClientHello
1972 (not affected if ECC support was compiled out) (found using Codenomicon
1976 * Support escaping of commas in x509_string_to_names()
1977 * Fix compile error in ssl_pthread_server (found by Julian Ospald).
1978 * Fix net_accept() regarding non-blocking sockets (found by Luca Pesce).
1979 * Don't print uninitialised buffer in ssl_mail_client (found by Marc Abel).
1980 * Fix warnings from Clang's scan-build (contributed by Alfred Klomp).
1981 * Fix compile error in timing.c when POLARSSL_NET_C and POLARSSL_SELFTEST
1982 are defined but not POLARSSL_HAVE_TIME (found by Stephane Di Vito).
1983 * Remove non-existent file from VS projects (found by Peter Vaskovic).
1984 * ssl_read() could return non-application data records on server while
1985 renegotation was pending, and on client when a HelloRequest was received.
1986 * Server-initiated renegotiation would fail with non-blocking I/O if the
1987 write callback returned WANT_WRITE when requesting renegotiation.
1988 * ssl_close_notify() could send more than one message in some circumstances
1989 with non-blocking I/O.
1990 * Fix compiler warnings on iOS (found by Sander Niemeijer).
1991 * x509_crt_parse() did not increase total_failed on PEM error
1992 * Fix compile error with armcc in mpi_is_prime()
1993 * Fix potential bad read in parsing ServerHello (found by Adrien
1997 * Ciphersuites using SHA-256 or SHA-384 now require TLS 1.x (there is no
1998 standard defining how to use SHA-2 with SSL 3.0).
1999 * Ciphersuites using RSA-PSK key exchange new require TLS 1.x (the spec is
2000 ambiguous on how to encode some packets with SSL 3.0).
2001 * Made buffer size in pk_write_(pub)key_pem() more dynamic, eg smaller if
2002 RSA is disabled, larger if POLARSSL_MPI_MAX_SIZE is larger.
2003 * ssl_read() now returns POLARSSL_ERR_NET_WANT_READ rather than
2004 POLARSSL_ERR_SSL_UNEXPECTED_MESSAGE on harmless alerts.
2005 * POLARSSL_MPI_MAX_SIZE now defaults to 1024 in order to allow 8192 bits
2007 * Accept spaces at end of line or end of buffer in base64_decode().
2008 * X.509 certificates with more than one AttributeTypeAndValue per
2009 RelativeDistinguishedName are not accepted any more.
2011 = PolarSSL 1.3.8 released 2014-07-11
2013 * Fix length checking for AEAD ciphersuites (found by Codenomicon).
2014 It was possible to crash the server (and client) using crafted messages
2015 when a GCM suite was chosen.
2018 * Add CCM module and cipher mode to Cipher Layer
2019 * Support for CCM and CCM_8 ciphersuites
2020 * Support for parsing and verifying RSASSA-PSS signatures in the X.509
2021 modules (certificates, CRLs and CSRs).
2022 * Blowfish in the cipher layer now supports variable length keys.
2023 * Add example config.h for PSK with CCM, optimized for low RAM usage.
2024 * Optimize for RAM usage in example config.h for NSA Suite B profile.
2025 * Add POLARSSL_REMOVE_ARC4_CIPHERSUITES to allow removing RC4 ciphersuites
2026 from the default list (inactive by default).
2027 * Add server-side enforcement of sent renegotiation requests
2028 (ssl_set_renegotiation_enforced())
2029 * Add SSL_CIPHERSUITES config.h flag to allow specifying a list of
2030 ciphersuites to use and save some memory if the list is small.
2033 * Add LINK_WITH_PTHREAD option in CMake for explicit linking that is
2034 required on some platforms (e.g. OpenBSD)
2035 * Migrate zeroizing of data to polarssl_zeroize() instead of memset()
2036 against unwanted compiler optimizations
2037 * md_list() now returns hashes strongest first
2038 * Selection of hash for signing ServerKeyExchange in TLS 1.2 now picks
2039 strongest offered by client.
2040 * All public contexts have _init() and _free() functions now for simpler
2044 * Fix in debug_print_msg()
2045 * Enforce alignment in the buffer allocator even if buffer is not aligned
2046 * Remove less-than-zero checks on unsigned numbers
2047 * Stricter check on SSL ClientHello internal sizes compared to actual packet
2048 size (found by TrustInSoft)
2049 * Fix WSAStartup() return value check (found by Peter Vaskovic)
2050 * Other minor issues (found by Peter Vaskovic)
2051 * Fix symlink command for cross compiling with CMake (found by Andre
2053 * Fix DER output of gen_key app (found by Gergely Budai)
2054 * Very small records were incorrectly rejected when truncated HMAC was in
2055 use with some ciphersuites and versions (RC4 in all versions, CBC with
2056 versions < TLS 1.1).
2057 * Very large records using more than 224 bytes of padding were incorrectly
2058 rejected with CBC-based ciphersuites and TLS >= 1.1
2059 * Very large records using less padding could cause a buffer overread of up
2060 to 32 bytes with CBC-based ciphersuites and TLS >= 1.1
2061 * Restore ability to use a v1 cert as a CA if trusted locally. (This had
2062 been removed in 1.3.6.)
2063 * Restore ability to locally trust a self-signed cert that is not a proper
2064 CA for use as an end entity certificate. (This had been removed in
2066 * Fix preprocessor checks for bn_mul PPC asm (found by Barry K. Nathan).
2067 * Use \n\t rather than semicolons for bn_mul asm, since some assemblers
2068 interpret semicolons as comment delimiters (found by Barry K. Nathan).
2069 * Fix off-by-one error in parsing Supported Point Format extension that
2070 caused some handshakes to fail.
2071 * Fix possible miscomputation of the premaster secret with DHE-PSK key
2072 exchange that caused some handshakes to fail with other implementations.
2073 (Failure rate <= 1/255 with common DHM moduli.)
2074 * Disable broken Sparc64 bn_mul assembly (found by Florian Obser).
2075 * Fix base64_decode() to return and check length correctly (in case of
2077 * Fix mpi_write_string() to write "00" as hex output for empty MPI (found
2080 = PolarSSL 1.3.7 released on 2014-05-02
2082 * debug_set_log_mode() added to determine raw or full logging
2083 * debug_set_threshold() added to ignore messages over threshold level
2084 * version_check_feature() added to check for compile-time options at
2088 * POLARSSL_CONFIG_OPTIONS has been removed. All values are individually
2089 checked and filled in the relevant module headers
2090 * Debug module only outputs full lines instead of parts
2091 * Better support for the different Attribute Types from IETF PKIX (RFC 5280)
2092 * AES-NI now compiles with "old" assemblers too
2093 * Ciphersuites based on RC4 now have the lowest priority by default
2096 * Only iterate over actual certificates in ssl_write_certificate_request()
2097 (found by Matthew Page)
2098 * Typos in platform.c and pkcs11.c (found by Daniel Phillips and Steffan
2100 * cert_write app should use subject of issuer certificate as issuer of cert
2101 * Fix false reject in padding check in ssl_decrypt_buf() for CBC
2102 ciphersuites, for full SSL frames of data.
2103 * Improve interoperability by not writing extension length in ClientHello /
2104 ServerHello when no extensions are present (found by Matthew Page)
2105 * rsa_check_pubkey() now allows an E up to N
2106 * On OpenBSD, use arc4random_buf() instead of rand() to prevent warnings
2107 * mpi_fill_random() was creating numbers larger than requested on
2108 big-endian platform when size was not an integer number of limbs
2109 * Fix dependencies issues in X.509 test suite.
2110 * Some parts of ssl_tls.c were compiled even when the module was disabled.
2111 * Fix detection of DragonflyBSD in net.c (found by Markus Pfeiffer)
2112 * Fix detection of Clang on some Apple platforms with CMake
2113 (found by Barry K. Nathan)
2115 = PolarSSL 1.3.6 released on 2014-04-11
2118 * Support for the ALPN SSL extension
2119 * Add option 'use_dev_random' to gen_key application
2120 * Enable verification of the keyUsage extension for CA and leaf
2121 certificates (POLARSSL_X509_CHECK_KEY_USAGE)
2122 * Enable verification of the extendedKeyUsage extension
2123 (POLARSSL_X509_CHECK_EXTENDED_KEY_USAGE)
2126 * x509_crt_info() now prints information about parsed extensions as well
2127 * pk_verify() now returns a specific error code when the signature is valid
2128 but shorter than the supplied length.
2129 * Use UTC time to check certificate validity.
2130 * Reject certificates with times not in UTC, per RFC 5280.
2133 * Avoid potential timing leak in ecdsa_sign() by blinding modular division.
2134 (Found by Watson Ladd.)
2135 * The notAfter date of some certificates was no longer checked since 1.3.5.
2136 This affects certificates in the user-supplied chain except the top
2137 certificate. If the user-supplied chain contains only one certificates,
2138 it is not affected (ie, its notAfter date is properly checked).
2139 * Prevent potential NULL pointer dereference in ssl_read_record() (found by
2143 * The length of various ClientKeyExchange messages was not properly checked.
2144 * Some example server programs were not sending the close_notify alert.
2145 * Potential memory leak in mpi_exp_mod() when error occurs during
2147 * Fixed malloc/free default #define in platform.c (found by Gergely Budai).
2148 * Fixed type which made POLARSSL_ENTROPY_FORCE_SHA256 uneffective (found by
2150 * Fix #include path in ecdsa.h which wasn't accepted by some compilers.
2151 (found by Gergely Budai)
2152 * Fix compile errors when POLARSSL_ERROR_STRERROR_BC is undefined (found by
2154 * oid_get_numeric_string() used to truncate the output without returning an
2155 error if the output buffer was just 1 byte too small.
2156 * dhm_parse_dhm() (hence dhm_parse_dhmfile()) did not set dhm->len.
2157 * Calling pk_debug() on an RSA-alt key would segfault.
2158 * pk_get_size() and pk_get_len() were off by a factor 8 for RSA-alt keys.
2159 * Potential buffer overwrite in pem_write_buffer() because of low length
2160 indication (found by Thijs Alkemade)
2161 * EC curves constants, which should be only in ROM since 1.3.3, were also
2162 stored in RAM due to missing 'const's (found by Gergely Budai).
2164 = PolarSSL 1.3.5 released on 2014-03-26
2166 * HMAC-DRBG as a separate module
2167 * Option to set the Curve preference order (disabled by default)
2168 * Single Platform compatilibity layer (for memory / printf / fprintf)
2169 * Ability to provide alternate timing implementation
2170 * Ability to force the entropy module to use SHA-256 as its basis
2171 (POLARSSL_ENTROPY_FORCE_SHA256)
2172 * Testing script ssl-opt.sh added for testing 'live' ssl option
2173 interoperability against OpenSSL and PolarSSL
2174 * Support for reading EC keys that use SpecifiedECDomain in some cases.
2175 * Entropy module now supports seed writing and reading
2178 * Deprecated the Memory layer
2179 * entropy_add_source(), entropy_update_manual() and entropy_gather()
2180 now thread-safe if POLARSSL_THREADING_C defined
2181 * Improvements to the CMake build system, contributed by Julian Ospald.
2182 * Work around a bug of the version of Clang shipped by Apple with Mavericks
2183 that prevented bignum.c from compiling. (Reported by Rafael Baptista.)
2184 * Revamped the compat.sh interoperatibility script to include support for
2185 testing against GnuTLS
2186 * Deprecated ssl_set_own_cert_rsa() and ssl_set_own_cert_rsa_alt()
2187 * Improvements to tests/Makefile, contributed by Oden Eriksson.
2190 * Forbid change of server certificate during renegotiation to prevent
2191 "triple handshake" attack when authentication mode is 'optional' (the
2192 attack was already impossible when authentication is required).
2193 * Check notBefore timestamp of certificates and CRLs from the future.
2194 * Forbid sequence number wrapping
2195 * Fixed possible buffer overflow with overlong PSK
2196 * Possible remotely-triggered out-of-bounds memory access fixed (found by
2200 * ecp_gen_keypair() does more tries to prevent failure because of
2202 * Fixed bug in RSA PKCS#1 v1.5 "reversed" operations
2203 * Fixed testing with out-of-source builds using cmake
2204 * Fixed version-major intolerance in server
2205 * Fixed CMake symlinking on out-of-source builds
2206 * Fixed dependency issues in test suite
2207 * Programs rsa_sign_pss and rsa_verify_pss were not using PSS since 1.3.0
2208 * Bignum's MIPS-32 assembly was used on MIPS-64, causing chaos. (Found by
2210 * ssl_cache was creating entries when max_entries=0 if TIMING_C was enabled.
2211 * m_sleep() was sleeping twice too long on most Unix platforms.
2212 * Fixed bug with session tickets and non-blocking I/O in the unlikely case
2213 send() would return an EAGAIN error when sending the ticket.
2214 * ssl_cache was leaking memory when reusing a timed out entry containing a
2216 * ssl_srv was leaking memory when client presented a timed out ticket
2217 containing a client certificate
2218 * ssl_init() was leaving a dirty pointer in ssl_context if malloc of
2220 * ssl_handshake_init() was leaving dirty pointers in subcontexts if malloc
2221 of one of them failed
2222 * Fix typo in rsa_copy() that impacted PKCS#1 v2 contexts
2223 * x509_get_current_time() uses localtime_r() to prevent thread issues
2225 = PolarSSL 1.3.4 released on 2014-01-27
2227 * Support for the Koblitz curves: secp192k1, secp224k1, secp256k1
2228 * Support for RIPEMD-160
2229 * Support for AES CFB8 mode
2230 * Support for deterministic ECDSA (RFC 6979)
2233 * Potential memory leak in bignum_selftest()
2234 * Replaced expired test certificate
2235 * ssl_mail_client now terminates lines with CRLF, instead of LF
2236 * net module handles timeouts on blocking sockets better (found by Tilman
2238 * Assembly format fixes in bn_mul.h
2241 * Missing MPI_CHK calls added around unguarded mpi calls (found by
2244 = PolarSSL 1.3.3 released on 2013-12-31
2246 * EC key generation support in gen_key app
2247 * Support for adhering to client ciphersuite order preference
2248 (POLARSSL_SSL_SRV_RESPECT_CLIENT_PREFERENCE)
2249 * Support for Curve25519
2250 * Support for ECDH-RSA and ECDH-ECDSA key exchanges and ciphersuites
2251 * Support for IPv6 in the NET module
2252 * AES-NI support for AES, AES-GCM and AES key scheduling
2253 * SSL Pthread-based server example added (ssl_pthread_server)
2256 * gen_prime() speedup
2257 * Speedup of ECP multiplication operation
2258 * Relaxed some SHA2 ciphersuite's version requirements
2259 * Dropped use of readdir_r() instead of readdir() with threading support
2260 * More constant-time checks in the RSA module
2261 * Split off curves from ecp.c into ecp_curves.c
2262 * Curves are now stored fully in ROM
2263 * Memory usage optimizations in ECP module
2264 * Removed POLARSSL_THREADING_DUMMY
2267 * Fixed bug in mpi_set_bit() on platforms where t_uint is wider than int
2268 * Fixed X.509 hostname comparison (with non-regular characters)
2269 * SSL now gracefully handles missing RNG
2270 * Missing defines / cases for RSA_PSK key exchange
2271 * crypt_and_hash app checks MAC before final decryption
2272 * Potential memory leak in ssl_ticket_keys_init()
2273 * Memory leak in benchmark application
2274 * Fixed x509_crt_parse_path() bug on Windows platforms
2275 * Added missing MPI_CHK() around some statements in mpi_div_mpi() (found by
2277 * Fixed potential overflow in certificate size verification in
2278 ssl_write_certificate() (found by TrustInSoft)
2281 * Possible remotely-triggered out-of-bounds memory access fixed (found by
2284 = PolarSSL 1.3.2 released on 2013-11-04
2286 * PK tests added to test framework
2287 * Added optional optimization for NIST MODP curves (POLARSSL_ECP_NIST_OPTIM)
2288 * Support for Camellia-GCM mode and ciphersuites
2291 * Padding checks in cipher layer are now constant-time
2292 * Value comparisons in SSL layer are now constant-time
2293 * Support for serialNumber, postalAddress and postalCode in X509 names
2294 * SSL Renegotiation was refactored
2297 * More stringent checks in cipher layer
2298 * Server does not send out extensions not advertised by client
2299 * Prevent possible alignment warnings on casting from char * to 'aligned *'
2300 * Misc fixes and additions to dependency checks
2302 * cert_write with selfsign should use issuer_name as subject_name
2303 * Fix ECDSA corner case: missing reduction mod N (found by DualTachyon)
2304 * Defines to handle UEFI environment under MSVC
2305 * Server-side initiated renegotiations send HelloRequest
2307 = PolarSSL 1.3.1 released on 2013-10-15
2309 * Support for Brainpool curves and TLS ciphersuites (RFC 7027)
2310 * Support for ECDHE-PSK key-exchange and ciphersuites
2311 * Support for RSA-PSK key-exchange and ciphersuites
2314 * RSA blinding locks for a smaller amount of time
2315 * TLS compression only allocates working buffer once
2316 * Introduced POLARSSL_HAVE_READDIR_R for systems without it
2317 * config.h is more script-friendly
2320 * Missing MSVC defines added
2321 * Compile errors with POLARSSL_RSA_NO_CRT
2322 * Header files with 'polarssl/'
2324 * Possible naming collision in dhm_context
2325 * Better support for MSVC
2326 * threading_set_alt() name
2327 * Added missing x509write_crt_set_version()
2329 = PolarSSL 1.3.0 released on 2013-10-01
2331 * Elliptic Curve Cryptography module added
2332 * Elliptic Curve Diffie Hellman module added
2333 * Ephemeral Elliptic Curve Diffie Hellman support for SSL/TLS
2334 (ECDHE-based ciphersuites)
2335 * Ephemeral Elliptic Curve Digital Signature Algorithm support for SSL/TLS
2336 (ECDSA-based ciphersuites)
2337 * Ability to specify allowed ciphersuites based on the protocol version.
2338 * PSK and DHE-PSK based ciphersuites added
2339 * Memory allocation abstraction layer added
2340 * Buffer-based memory allocator added (no malloc() / free() / HEAP usage)
2341 * Threading abstraction layer added (dummy / pthread / alternate)
2342 * Public Key abstraction layer added
2343 * Parsing Elliptic Curve keys
2344 * Parsing Elliptic Curve certificates
2345 * Support for max_fragment_length extension (RFC 6066)
2346 * Support for truncated_hmac extension (RFC 6066)
2347 * Support for zeros-and-length (ANSI X.923) padding, one-and-zeros
2348 (ISO/IEC 7816-4) padding and zero padding in the cipher layer
2349 * Support for session tickets (RFC 5077)
2350 * Certificate Request (CSR) generation with extensions (key_usage,
2352 * X509 Certificate writing with extensions (basic_constraints,
2353 issuer_key_identifier, etc)
2354 * Optional blinding for RSA, DHM and EC
2355 * Support for multiple active certificate / key pairs in SSL servers for
2356 the same host (Not to be confused with SNI!)
2359 * Ability to enable / disable SSL v3 / TLS 1.0 / TLS 1.1 / TLS 1.2
2361 * Introduced separate SSL Ciphersuites module that is based on
2362 Cipher and MD information
2363 * Internals for SSL module adapted to have separate IV pointer that is
2364 dynamically set (Better support for hardware acceleration)
2365 * Moved all OID functionality to a separate module. RSA function
2366 prototypes for the RSA sign and verify functions changed as a result
2367 * Split up the GCM module into a starts/update/finish cycle
2368 * Client and server now filter sent and accepted ciphersuites on minimum
2369 and maximum protocol version
2370 * Ability to disable server_name extension (RFC 6066)
2371 * Renamed error_strerror() to the less conflicting polarssl_strerror()
2372 (Ability to keep old as well with POLARSSL_ERROR_STRERROR_BC)
2373 * SHA2 renamed to SHA256, SHA4 renamed to SHA512 and functions accordingly
2374 * All RSA operations require a random generator for blinding purposes
2375 * X509 core refactored
2376 * x509_crt_verify() now case insensitive for cn (RFC 6125 6.4)
2377 * Also compiles / runs without time-based functions (!POLARSSL_HAVE_TIME)
2378 * Support faulty X509 v1 certificates with extensions
2379 (POLARSSL_X509_ALLOW_EXTENSIONS_NON_V3)
2382 * Fixed parse error in ssl_parse_certificate_request()
2383 * zlib compression/decompression skipped on empty blocks
2384 * Support for AIX header locations in net.c module
2385 * Fixed file descriptor leaks
2388 * RSA blinding on CRT operations to counter timing attacks
2389 (found by Cyril Arnaud and Pierre-Alain Fouque)
2392 = Version 1.2.14 released 2015-05-??
2395 * Fix potential invalid memory read in the server, that allows a client to
2396 crash it remotely (found by Caj Larsson).
2397 * Fix potential invalid memory read in certificate parsing, that allows a
2398 client to crash the server remotely if client authentication is enabled
2399 (found using Codenomicon Defensics).
2400 * Add countermeasure against "Lucky 13 strikes back" cache-based attack,
2401 https://dl.acm.org/citation.cfm?id=2714625
2404 * Fix bug in Via Padlock support (found by Nikos Mavrogiannopoulos).
2405 * Fix hardclock() (only used in the benchmarking program) with some
2406 versions of mingw64 (found by kxjhlele).
2407 * Fix warnings from mingw64 in timing.c (found by kxjklele).
2408 * Fix potential unintended sign extension in asn1_get_len() on 64-bit
2409 platforms (found with Coverity Scan).
2411 = Version 1.2.13 released 2015-02-16
2412 Note: Although PolarSSL has been renamed to mbed TLS, no changes reflecting
2413 this will be made in the 1.2 branch at this point.
2416 * Fix remotely-triggerable uninitialised pointer dereference caused by
2417 crafted X.509 certificate (TLS server is not affected if it doesn't ask
2418 for a client certificate) (found using Codenomicon Defensics).
2419 * Fix remotely-triggerable memory leak caused by crafted X.509 certificates
2420 (TLS server is not affected if it doesn't ask for a client certificate)
2421 (found using Codenomicon Defensics).
2422 * Fix potential stack overflow while parsing crafted X.509 certificates
2423 (TLS server is not affected if it doesn't ask for a client certificate)
2424 found using Codenomicon Defensics).
2425 * Fix buffer overread of size 1 when parsing crafted X.509 certificates
2426 (TLS server is not affected if it doesn't ask for a client certificate).
2429 * Fix potential undefined behaviour in Camellia.
2430 * Fix memory leaks in PKCS#5 and PKCS#12.
2431 * Stack buffer overflow if ctr_drbg_update() is called with too large
2432 add_len (found by Jean-Philippe Aumasson) (not triggerable remotely).
2433 * Fix bug in MPI/bignum on s390/s390x (reported by Dan Horák) (introduced
2435 * Fix unchecked return code in x509_crt_parse_path() on Windows (found by
2437 * Fix assembly selection for MIPS64 (thanks to James Cowgill).
2438 * ssl_get_verify_result() now works even if the handshake was aborted due
2439 to a failed verification (found by Fredrik Axelsson).
2440 * Skip writing and parsing signature_algorithm extension if none of the
2441 key exchanges enabled needs certificates. This fixes a possible interop
2442 issue with some servers when a zero-length extension was sent. (Reported
2444 * On a 0-length input, base64_encode() did not correctly set output length
2445 (found by Hendrik van den Boogaard).
2448 * Blind RSA private operations even when POLARSSL_RSA_NO_CRT is defined.
2449 * Forbid repeated extensions in X.509 certificates.
2450 * Add compile-time option POLARSSL_X509_MAX_INTERMEDIATE_CA to limit the
2451 length of an X.509 verification chain (default = 8).
2452 = Version 1.2.12 released 2014-10-24
2455 * Remotely-triggerable memory leak when parsing some X.509 certificates
2456 (server is not affected if it doesn't ask for a client certificate).
2457 (Found using Codenomicon Defensics.)
2460 * Fix potential bad read in parsing ServerHello (found by Adrien
2462 * ssl_close_notify() could send more than one message in some circumstances
2463 with non-blocking I/O.
2464 * x509_crt_parse() did not increase total_failed on PEM error
2465 * Fix compiler warnings on iOS (found by Sander Niemeijer).
2466 * Don't print uninitialised buffer in ssl_mail_client (found by Marc Abel).
2467 * Fix net_accept() regarding non-blocking sockets (found by Luca Pesce).
2468 * ssl_read() could return non-application data records on server while
2469 renegotation was pending, and on client when a HelloRequest was received.
2470 * Fix warnings from Clang's scan-build (contributed by Alfred Klomp).
2473 * X.509 certificates with more than one AttributeTypeAndValue per
2474 RelativeDistinguishedName are not accepted any more.
2475 * ssl_read() now returns POLARSSL_ERR_NET_WANT_READ rather than
2476 POLARSSL_ERR_SSL_UNEXPECTED_MESSAGE on harmless alerts.
2477 * Accept spaces at end of line or end of buffer in base64_decode().
2479 = Version 1.2.11 released 2014-07-11
2481 * Entropy module now supports seed writing and reading
2484 * Introduced POLARSSL_HAVE_READDIR_R for systems without it
2485 * Improvements to the CMake build system, contributed by Julian Ospald.
2486 * Work around a bug of the version of Clang shipped by Apple with Mavericks
2487 that prevented bignum.c from compiling. (Reported by Rafael Baptista.)
2488 * Improvements to tests/Makefile, contributed by Oden Eriksson.
2489 * Use UTC time to check certificate validity.
2490 * Reject certificates with times not in UTC, per RFC 5280.
2491 * Migrate zeroizing of data to polarssl_zeroize() instead of memset()
2492 against unwanted compiler optimizations
2495 * Forbid change of server certificate during renegotiation to prevent
2496 "triple handshake" attack when authentication mode is optional (the
2497 attack was already impossible when authentication is required).
2498 * Check notBefore timestamp of certificates and CRLs from the future.
2499 * Forbid sequence number wrapping
2500 * Prevent potential NULL pointer dereference in ssl_read_record() (found by
2502 * Fix length checking for AEAD ciphersuites (found by Codenomicon).
2503 It was possible to crash the server (and client) using crafted messages
2504 when a GCM suite was chosen.
2507 * Fixed X.509 hostname comparison (with non-regular characters)
2508 * SSL now gracefully handles missing RNG
2509 * crypt_and_hash app checks MAC before final decryption
2510 * Fixed x509_crt_parse_path() bug on Windows platforms
2511 * Added missing MPI_CHK() around some statements in mpi_div_mpi() (found by
2513 * Fixed potential overflow in certificate size verification in
2514 ssl_write_certificate() (found by TrustInSoft)
2515 * Fix ASM format in bn_mul.h
2516 * Potential memory leak in bignum_selftest()
2517 * Replaced expired test certificate
2518 * ssl_mail_client now terminates lines with CRLF, instead of LF
2519 * Fix bug in RSA PKCS#1 v1.5 "reversed" operations
2520 * Fixed testing with out-of-source builds using cmake
2521 * Fixed version-major intolerance in server
2522 * Fixed CMake symlinking on out-of-source builds
2523 * Bignum's MIPS-32 assembly was used on MIPS-64, causing chaos. (Found by
2525 * ssl_init() was leaving a dirty pointer in ssl_context if malloc of
2527 * ssl_handshake_init() was leaving dirty pointers in subcontexts if malloc
2528 of one of them failed
2529 * x509_get_current_time() uses localtime_r() to prevent thread issues
2530 * Some example server programs were not sending the close_notify alert.
2531 * Potential memory leak in mpi_exp_mod() when error occurs during
2533 * Improve interoperability by not writing extension length in ClientHello
2534 when no extensions are present (found by Matthew Page)
2535 * rsa_check_pubkey() now allows an E up to N
2536 * On OpenBSD, use arc4random_buf() instead of rand() to prevent warnings
2537 * mpi_fill_random() was creating numbers larger than requested on
2538 big-endian platform when size was not an integer number of limbs
2539 * Fix detection of DragonflyBSD in net.c (found by Markus Pfeiffer)
2540 * Stricter check on SSL ClientHello internal sizes compared to actual packet
2541 size (found by TrustInSoft)
2542 * Fix preprocessor checks for bn_mul PPC asm (found by Barry K. Nathan).
2543 * Use \n\t rather than semicolons for bn_mul asm, since some assemblers
2544 interpret semicolons as comment delimiters (found by Barry K. Nathan).
2545 * Disable broken Sparc64 bn_mul assembly (found by Florian Obser).
2546 * Fix base64_decode() to return and check length correctly (in case of
2549 = Version 1.2.10 released 2013-10-07
2551 * Changed RSA blinding to a slower but thread-safe version
2554 * Fixed memory leak in RSA as a result of introduction of blinding
2555 * Fixed ssl_pkcs11_decrypt() prototype
2556 * Fixed MSVC project files
2558 = Version 1.2.9 released 2013-10-01
2560 * x509_verify() now case insensitive for cn (RFC 6125 6.4)
2563 * Fixed potential memory leak when failing to resume a session
2564 * Fixed potential file descriptor leaks (found by Remi Gacogne)
2568 * Fixed potential heap buffer overflow on large hostname setting
2569 * Fixed potential negative value misinterpretation in load_file()
2570 * RSA blinding on CRT operations to counter timing attacks
2571 (found by Cyril Arnaud and Pierre-Alain Fouque)
2573 = Version 1.2.8 released 2013-06-19
2575 * Parsing of PKCS#8 encrypted private key files
2576 * PKCS#12 PBE and derivation functions
2577 * Centralized module option values in config.h to allow user-defined
2578 settings without editing header files by using POLARSSL_CONFIG_OPTIONS
2581 * HAVEGE random generator disabled by default
2582 * Internally split up x509parse_key() into a (PEM) handler function
2583 and specific DER parser functions for the PKCS#1 and unencrypted
2584 PKCS#8 private key formats
2585 * Added mechanism to provide alternative implementations for all
2586 symmetric cipher and hash algorithms (e.g. POLARSSL_AES_ALT in
2588 * PKCS#5 module added. Moved PBKDF2 functionality inside and deprecated
2592 * Secure renegotiation extension should only be sent in case client
2593 supports secure renegotiation
2594 * Fixed offset for cert_type list in ssl_parse_certificate_request()
2595 * Fixed const correctness issues that have no impact on the ABI
2596 * x509parse_crt() now better handles PEM error situations
2597 * ssl_parse_certificate() now calls x509parse_crt_der() directly
2598 instead of the x509parse_crt() wrapper that can also parse PEM
2600 * x509parse_crtpath() is now reentrant and uses more portable stat()
2601 * Fixed bignum.c and bn_mul.h to support Thumb2 and LLVM compiler
2602 * Fixed values for 2-key Triple DES in cipher layer
2603 * ssl_write_certificate_request() can handle empty ca_chain
2606 * A possible DoS during the SSL Handshake, due to faulty parsing of
2607 PEM-encoded certificates has been fixed (found by Jack Lloyd)
2609 = Version 1.2.7 released 2013-04-13
2611 * Ability to specify allowed ciphersuites based on the protocol version.
2614 * Default Blowfish keysize is now 128-bits
2615 * Test suites made smaller to accommodate Raspberry Pi
2618 * Fix for MPI assembly for ARM
2619 * GCM adapted to support sizes > 2^29
2621 = Version 1.2.6 released 2013-03-11
2623 * Fixed memory leak in ssl_free() and ssl_reset() for active session
2624 * Corrected GCM counter incrementation to use only 32-bits instead of
2625 128-bits (found by Yawning Angel)
2626 * Fixes for 64-bit compilation with MS Visual Studio
2627 * Fixed net_bind() for specified IP addresses on little endian systems
2628 * Fixed assembly code for ARM (Thumb and regular) for some compilers
2631 * Internally split up rsa_pkcs1_encrypt(), rsa_pkcs1_decrypt(),
2632 rsa_pkcs1_sign() and rsa_pkcs1_verify() to separate PKCS#1 v1.5 and
2633 PKCS#1 v2.1 functions
2634 * Added support for custom labels when using rsa_rsaes_oaep_encrypt()
2635 or rsa_rsaes_oaep_decrypt()
2636 * Re-added handling for SSLv2 Client Hello when the define
2637 POLARSSL_SSL_SRV_SUPPORT_SSLV2_CLIENT_HELLO is set
2638 * The SSL session cache module (ssl_cache) now also retains peer_cert
2639 information (not the entire chain)
2642 * Removed further timing differences during SSL message decryption in
2644 * Removed timing differences due to bad padding from
2645 rsa_rsaes_pkcs1_v15_decrypt() and rsa_pkcs1_decrypt() for PKCS#1 v1.5
2648 = Version 1.2.5 released 2013-02-02
2650 * Allow enabling of dummy error_strerror() to support some use-cases
2651 * Debug messages about padding errors during SSL message decryption are
2652 disabled by default and can be enabled with POLARSSL_SSL_DEBUG_ALL
2653 * Sending of security-relevant alert messages that do not break
2654 interoperability can be switched on/off with the flag
2655 POLARSSL_SSL_ALL_ALERT_MESSAGES
2658 * Removed timing differences during SSL message decryption in
2659 ssl_decrypt_buf() due to badly formatted padding
2661 = Version 1.2.4 released 2013-01-25
2663 * More advanced SSL ciphersuite representation and moved to more dynamic
2665 * Added ssl_handshake_step() to allow single stepping the handshake process
2668 * Memory leak when using RSA_PKCS_V21 operations fixed
2669 * Handle future version properly in ssl_write_certificate_request()
2670 * Correctly handle CertificateRequest message in client for <= TLS 1.1
2673 = Version 1.2.3 released 2012-11-26
2675 * Server not always sending correct CertificateRequest message
2677 = Version 1.2.2 released 2012-11-24
2679 * Added p_hw_data to ssl_context for context specific hardware acceleration
2681 * During verify trust-CA is only checked for expiration and CRL presence
2684 * Fixed client authentication compatibility
2685 * Fixed dependency on POLARSSL_SHA4_C in SSL modules
2687 = Version 1.2.1 released 2012-11-20
2689 * Depth that the certificate verify callback receives is now numbered
2690 bottom-up (Peer cert depth is 0)
2694 * Moved mpi_inv_mod() outside POLARSSL_GENPRIME
2695 * Allow R and A to point to same mpi in mpi_div_mpi (found by Manuel
2697 * Fixed possible segfault in mpi_shift_r() (found by Manuel
2699 * Added max length check for rsa_pkcs1_sign with PKCS#1 v2.1
2701 = Version 1.2.0 released 2012-10-31
2703 * Added support for NULL cipher (POLARSSL_CIPHER_NULL_CIPHER) and weak
2704 ciphersuites (POLARSSL_ENABLE_WEAK_CIPHERSUITES). They are disabled by
2706 * Added support for wildcard certificates
2707 * Added support for multi-domain certificates through the X509 Subject
2708 Alternative Name extension
2709 * Added preliminary ASN.1 buffer writing support
2710 * Added preliminary X509 Certificate Request writing support
2711 * Added key_app_writer example application
2712 * Added cert_req example application
2713 * Added base Galois Counter Mode (GCM) for AES
2714 * Added TLS 1.2 support (RFC 5246)
2715 * Added GCM suites to TLS 1.2 (RFC 5288)
2716 * Added commandline error code convertor (util/strerror)
2717 * Added support for Hardware Acceleration hooking in SSL/TLS
2718 * Added OpenSSL / PolarSSL compatibility script (tests/compat.sh) and
2719 example application (programs/ssl/o_p_test) (requires OpenSSL)
2720 * Added X509 CA Path support
2721 * Added Thumb assembly optimizations
2722 * Added DEFLATE compression support as per RFC3749 (requires zlib)
2723 * Added blowfish algorithm (Generic and cipher layer)
2724 * Added PKCS#5 PBKDF2 key derivation function
2725 * Added Secure Renegotiation (RFC 5746)
2726 * Added predefined DHM groups from RFC 5114
2727 * Added simple SSL session cache implementation
2728 * Added ServerName extension parsing (SNI) at server side
2729 * Added option to add minimum accepted SSL/TLS protocol version
2732 * Removed redundant POLARSSL_DEBUG_MSG define
2733 * AES code only check for Padlock once
2734 * Fixed const-correctness mpi_get_bit()
2735 * Documentation for mpi_lsb() and mpi_msb()
2736 * Moved out_msg to out_hdr + 32 to support hardware acceleration
2737 * Changed certificate verify behaviour to comply with RFC 6125 section 6.3
2738 to not match CN if subjectAltName extension is present (Closes ticket #56)
2739 * Cipher layer cipher_mode_t POLARSSL_MODE_CFB128 is renamed to
2740 POLARSSL_MODE_CFB, to also handle different block size CFB modes.
2741 * Removed handling for SSLv2 Client Hello (as per RFC 5246 recommendation)
2742 * Revamped session resumption handling
2743 * Generalized external private key implementation handling (like PKCS#11)
2745 * Revamped x509_verify() and the SSL f_vrfy callback implementations
2746 * Moved from unsigned long to fixed width uint32_t types throughout code
2747 * Renamed ciphersuites naming scheme to IANA reserved names
2750 * Fixed handling error in mpi_cmp_mpi() on longer B values (found by
2752 * Fixed potential heap corruption in x509_name allocation
2753 * Fixed single RSA test that failed on Big Endian systems (Closes ticket #54)
2754 * mpi_exp_mod() now correctly handles negative base numbers (Closes ticket
2756 * Handle encryption with private key and decryption with public key as per
2758 * Handle empty certificate subject names
2759 * Prevent reading over buffer boundaries on X509 certificate parsing
2760 * mpi_add_abs() now correctly handles adding short numbers to long numbers
2761 with carry rollover (found by Ruslan Yushchenko)
2762 * Handle existence of OpenSSL Trust Extensions at end of X.509 DER blob
2763 * Fixed MPI assembly for SPARC64 platform
2766 * Fixed potential memory zeroization on miscrafted RSA key (found by Eloi
2769 = Version 1.1.8 released on 2013-10-01
2771 * Fixed potential memory leak when failing to resume a session
2772 * Fixed potential file descriptor leaks
2775 * Potential buffer-overflow for ssl_read_record() (independently found by
2776 both TrustInSoft and Paul Brodeur of Leviathan Security Group)
2777 * Potential negative value misinterpretation in load_file()
2778 * Potential heap buffer overflow on large hostname setting
2780 = Version 1.1.7 released on 2013-06-19
2782 * HAVEGE random generator disabled by default
2785 * x509parse_crt() now better handles PEM error situations
2786 * ssl_parse_certificate() now calls x509parse_crt_der() directly
2787 instead of the x509parse_crt() wrapper that can also parse PEM
2789 * Fixed values for 2-key Triple DES in cipher layer
2790 * ssl_write_certificate_request() can handle empty ca_chain
2793 * A possible DoS during the SSL Handshake, due to faulty parsing of
2794 PEM-encoded certificates has been fixed (found by Jack Lloyd)
2796 = Version 1.1.6 released on 2013-03-11
2798 * Fixed net_bind() for specified IP addresses on little endian systems
2801 * Allow enabling of dummy error_strerror() to support some use-cases
2802 * Debug messages about padding errors during SSL message decryption are
2803 disabled by default and can be enabled with POLARSSL_SSL_DEBUG_ALL
2806 * Removed timing differences during SSL message decryption in
2808 * Removed timing differences due to bad padding from
2809 rsa_rsaes_pkcs1_v15_decrypt() and rsa_pkcs1_decrypt() for PKCS#1 v1.5
2812 = Version 1.1.5 released on 2013-01-16
2814 * Fixed MPI assembly for SPARC64 platform
2815 * Handle existence of OpenSSL Trust Extensions at end of X.509 DER blob
2816 * mpi_add_abs() now correctly handles adding short numbers to long numbers
2818 * Moved mpi_inv_mod() outside POLARSSL_GENPRIME
2819 * Prevent reading over buffer boundaries on X509 certificate parsing
2820 * mpi_exp_mod() now correctly handles negative base numbers (Closes ticket
2822 * Fixed possible segfault in mpi_shift_r() (found by Manuel
2824 * Allow R and A to point to same mpi in mpi_div_mpi (found by Manuel
2826 * Added max length check for rsa_pkcs1_sign with PKCS#1 v2.1
2827 * Memory leak when using RSA_PKCS_V21 operations fixed
2828 * Handle encryption with private key and decryption with public key as per
2833 * Fixed potential memory zeroization on miscrafted RSA key (found by Eloi
2836 = Version 1.1.4 released on 2012-05-31
2838 * Correctly handle empty SSL/TLS packets (Found by James Yonan)
2839 * Fixed potential heap corruption in x509_name allocation
2840 * Fixed single RSA test that failed on Big Endian systems (Closes ticket #54)
2842 = Version 1.1.3 released on 2012-04-29
2844 * Fixed random MPI generation to not generate more size than requested.
2846 = Version 1.1.2 released on 2012-04-26
2848 * Fixed handling error in mpi_cmp_mpi() on longer B values (found by
2852 * Fixed potential memory corruption on miscrafted client messages (found by
2853 Frama-C team at CEA LIST)
2854 * Fixed generation of DHM parameters to correct length (found by Ruslan
2857 = Version 1.1.1 released on 2012-01-23
2859 * Check for failed malloc() in ssl_set_hostname() and x509_get_entries()
2860 (Closes ticket #47, found by Hugo Leisink)
2861 * Fixed issues with Intel compiler on 64-bit systems (Closes ticket #50)
2862 * Fixed multiple compiler warnings for VS6 and armcc
2863 * Fixed bug in CTR_CRBG selftest
2865 = Version 1.1.0 released on 2011-12-22
2867 * Added ssl_session_reset() to allow better multi-connection pools of
2868 SSL contexts without needing to set all non-connection-specific
2869 data and pointers again. Adapted ssl_server to use this functionality.
2870 * Added ssl_set_max_version() to allow clients to offer a lower maximum
2871 supported version to a server to help buggy server implementations.
2873 * Added cipher_get_cipher_mode() and cipher_get_cipher_operation()
2874 introspection functions (Closes ticket #40)
2875 * Added CTR_DRBG based on AES-256-CTR (NIST SP 800-90) random generator
2876 * Added a generic entropy accumulator that provides support for adding
2877 custom entropy sources and added some generic and platform dependent
2881 * Documentation for AES and Camellia in modes CTR and CFB128 clarified.
2882 * Fixed rsa_encrypt and rsa_decrypt examples to use public key for
2883 encryption and private key for decryption. (Closes ticket #34)
2884 * Inceased maximum size of ASN1 length reads to 32-bits.
2885 * Added an EXPLICIT tag number parameter to x509_get_ext()
2886 * Added a separate CRL entry extension parsing function
2887 * Separated the ASN.1 parsing code from the X.509 specific parsing code.
2888 So now there is a module that is controlled with POLARSSL_ASN1_PARSE_C.
2889 * Changed the defined key-length of DES ciphers in cipher.h to include the
2890 parity bits, to prevent mistakes in copying data. (Closes ticket #33)
2891 * Loads of minimal changes to better support WINCE as a build target
2892 (Credits go to Marco Lizza)
2893 * Added POLARSSL_MPI_WINDOW_SIZE definition to allow easier time to memory
2895 * Introduced POLARSSL_MPI_MAX_SIZE and POLARSSL_MPI_MAX_BITS for MPI size
2896 management (Closes ticket #44)
2897 * Changed the used random function pointer to more flexible format. Renamed
2898 havege_rand() to havege_random() to prevent mistakes. Lots of changes as
2899 a consequence in library code and programs
2900 * Moved all examples programs to use the new entropy and CTR_DRBG
2901 * Added permissive certificate parsing to x509parse_crt() and
2902 x509parse_crtfile(). With permissive parsing the parsing does not stop on
2903 encountering a parse-error. Beware that the meaning of return values has
2905 * All error codes are now negative. Even on mermory failures and IO errors.
2908 * Fixed faulty HMAC-MD2 implementation. Found by dibac. (Closes
2910 * Fixed a bug where the CRL parser expected an EXPLICIT ASN.1 tag
2911 before version numbers
2912 * Allowed X509 key usage parsing to accept 4 byte values instead of the
2913 standard 1 byte version sometimes used by Microsoft. (Closes ticket #38)
2914 * Fixed incorrect behaviour in case of RSASSA-PSS with a salt length
2915 smaller than the hash length. (Closes ticket #41)
2916 * If certificate serial is longer than 32 octets, serial number is now
2917 appended with '....' after first 28 octets
2918 * Improved build support for s390x and sparc64 in bignum.h
2919 * Fixed MS Visual C++ name clash with int64 in sha4.h
2920 * Corrected removal of leading "00:" in printing serial numbers in
2921 certificates and CRLs
2923 = Version 1.0.0 released on 2011-07-27
2925 * Expanded cipher layer with support for CFB128 and CTR mode
2926 * Added rsa_encrypt and rsa_decrypt simple example programs.
2929 * The generic cipher and message digest layer now have normal error
2930 codes instead of integers
2933 * Undid faulty bug fix in ssl_write() when flushing old data (Ticket
2936 = Version 0.99-pre5 released on 2011-05-26
2938 * Added additional Cipher Block Modes to symmetric ciphers
2939 (AES CTR, Camellia CTR, XTEA CBC) including the option to
2940 enable and disable individual modes when needed
2941 * Functions requiring File System functions can now be disabled
2942 by undefining POLARSSL_FS_IO
2943 * A error_strerror function() has been added to translate between
2944 error codes and their description.
2945 * Added mpi_get_bit() and mpi_set_bit() individual bit setter/getter
2947 * Added ssl_mail_client and ssl_fork_server as example programs.
2950 * Major argument / variable rewrite. Introduced use of size_t
2951 instead of int for buffer lengths and loop variables for
2952 better unsigned / signed use. Renamed internal bigint types
2953 t_int and t_dbl to t_uint and t_udbl in the process
2954 * mpi_init() and mpi_free() now only accept a single MPI
2955 argument and do not accept variable argument lists anymore.
2956 * The error codes have been remapped and combining error codes
2957 is now done with a PLUS instead of an OR as error codes
2959 * Changed behaviour of net_read(), ssl_fetch_input() and ssl_recv().
2960 net_recv() now returns 0 on EOF instead of
2961 POLARSSL_ERR_NET_CONN_RESET. ssl_fetch_input() returns
2962 POLARSSL_ERR_SSL_CONN_EOF on an EOF from its f_recv() function.
2963 ssl_read() returns 0 if a POLARSSL_ERR_SSL_CONN_EOF is received
2964 after the handshake.
2965 * Network functions now return POLARSSL_ERR_NET_WANT_READ or
2966 POLARSSL_ERR_NET_WANT_WRITE instead of the ambiguous
2967 POLARSSL_ERR_NET_TRY_AGAIN
2969 = Version 0.99-pre4 released on 2011-04-01
2971 * Added support for PKCS#1 v2.1 encoding and thus support
2972 for the RSAES-OAEP and RSASSA-PSS operations.
2973 * Reading of Public Key files incorporated into default x509
2974 functionality as well.
2975 * Added mpi_fill_random() for centralized filling of big numbers
2976 with random data (Fixed ticket #10)
2979 * Debug print of MPI now removes leading zero octets and
2980 displays actual bit size of the value.
2981 * x509parse_key() (and as a consequence x509parse_keyfile())
2982 does not zeroize memory in advance anymore. Use rsa_init()
2983 before parsing a key or keyfile!
2986 * Debug output of MPI's now the same independent of underlying
2987 platform (32-bit / 64-bit) (Fixes ticket #19, found by Mads
2988 Kiilerich and Mihai Militaru)
2989 * Fixed bug in ssl_write() when flushing old data (Fixed ticket
2990 #18, found by Nikolay Epifanov)
2991 * Fixed proper handling of RSASSA-PSS verification with variable
2994 = Version 0.99-pre3 released on 2011-02-28
2995 This release replaces version 0.99-pre2 which had possible copyright issues.
2997 * Parsing PEM private keys encrypted with DES and AES
2998 are now supported as well (Fixes ticket #5)
2999 * Added crl_app program to allow easy reading and
3000 printing of X509 CRLs from file
3003 * Parsing of PEM files moved to separate module (Fixes
3004 ticket #13). Also possible to remove PEM support for
3005 systems only using DER encoding
3008 * Corrected parsing of UTCTime dates before 1990 and
3010 * Support more exotic OID's when parsing certificates
3011 (found by Mads Kiilerich)
3012 * Support more exotic name representations when parsing
3013 certificates (found by Mads Kiilerich)
3014 * Replaced the expired test certificates
3015 * Do not bail out if no client certificate specified. Try
3016 to negotiate anonymous connection (Fixes ticket #12,
3017 found by Boris Krasnovskiy)
3020 * Fixed a possible Man-in-the-Middle attack on the
3021 Diffie Hellman key exchange (thanks to Larry Highsmith,
3024 = Version 0.99-pre1 released on 2011-01-30
3026 Note: Most of these features have been donated by Fox-IT
3027 * Added Doxygen source code documentation parts
3028 * Added reading of DHM context from memory and file
3029 * Improved X509 certificate parsing to include extended
3030 certificate fields, including Key Usage
3031 * Improved certificate verification and verification
3032 against the available CRLs
3033 * Detection for DES weak keys and parity bits added
3034 * Improvements to support integration in other
3036 + Added generic message digest and cipher wrapper
3037 + Improved information about current capabilities,
3038 status, objects and configuration
3039 + Added verification callback on certificate chain
3040 verification to allow external blacklisting
3041 + Additional example programs to show usage
3042 * Added support for PKCS#11 through the use of the
3043 libpkcs11-helper library
3046 * x509parse_time_expired() checks time in addition to
3047 the existing date check
3048 * The ciphers member of ssl_context and the cipher member
3049 of ssl_session have been renamed to ciphersuites and
3050 ciphersuite respectively. This clarifies the difference
3051 with the generic cipher layer and is better naming
3054 = Version 0.14.0 released on 2010-08-16
3056 * Added support for SSL_EDH_RSA_AES_128_SHA and
3057 SSL_EDH_RSA_CAMELLIA_128_SHA ciphersuites
3058 * Added compile-time and run-time version information
3059 * Expanded ssl_client2 arguments for more flexibility
3060 * Added support for TLS v1.1
3063 * Made Makefile cleaner
3064 * Removed dependency on rand() in rsa_pkcs1_encrypt().
3065 Now using random fuction provided to function and
3066 changed the prototype of rsa_pkcs1_encrypt(),
3067 rsa_init() and rsa_gen_key().
3068 * Some SSL defines were renamed in order to avoid
3072 * Fixed CMake out of source build for tests (found by
3074 * rsa_check_private() now supports PKCS1v2 keys as well
3075 * Fixed deadlock in rsa_pkcs1_encrypt() on failing random
3078 = Version 0.13.1 released on 2010-03-24
3080 * Fixed Makefile in library that was mistakenly merged
3081 * Added missing const string fixes
3083 = Version 0.13.0 released on 2010-03-21
3085 * Added option parsing for host and port selection to
3087 * Added support for GeneralizedTime in X509 parsing
3088 * Added cert_app program to allow easy reading and
3089 printing of X509 certificates from file or SSL
3093 * Added const correctness for main code base
3094 * X509 signature algorithm determination is now
3095 in a function to allow easy future expansion
3096 * Changed symmetric cipher functions to
3097 identical interface (returning int result values)
3098 * Changed ARC4 to use separate input/output buffer
3099 * Added reset function for HMAC context as speed-up
3100 for specific use-cases
3103 * Fixed bug resulting in failure to send the last
3104 certificate in the chain in ssl_write_certificate() and
3105 ssl_write_certificate_request() (found by fatbob)
3106 * Added small fixes for compiler warnings on a Mac
3107 (found by Frank de Brabander)
3108 * Fixed algorithmic bug in mpi_is_prime() (found by
3111 = Version 0.12.1 released on 2009-10-04
3113 * Coverage test definitions now support 'depends_on'
3115 * Tests requiring specific hashing algorithms now honor
3119 * Changed typo in #ifdef in x509parse.c (found
3122 = Version 0.12.0 released on 2009-07-28
3124 * Added CMake makefiles as alternative to regular Makefiles.
3125 * Added preliminary Code Coverage tests for AES, ARC4,
3126 Base64, MPI, SHA-family, MD-family, HMAC-SHA-family,
3127 Camellia, DES, 3-DES, RSA PKCS#1, XTEA, Diffie-Hellman
3131 * Error codes are not (necessarily) negative. Keep
3132 this is mind when checking for errors.
3133 * RSA_RAW renamed to SIG_RSA_RAW for consistency.
3134 * Fixed typo in name of POLARSSL_ERR_RSA_OUTPUT_TOO_LARGE.
3135 * Changed interface for AES and Camellia setkey functions
3136 to indicate invalid key lengths.
3139 * Fixed include location of endian.h on FreeBSD (found by
3141 * Fixed include location of endian.h and name clash on
3142 Apples (found by Martin van Hensbergen)
3143 * Fixed HMAC-MD2 by modifying md2_starts(), so that the
3144 required HMAC ipad and opad variables are not cleared.
3145 (found by code coverage tests)
3146 * Prevented use of long long in bignum if
3147 POLARSSL_HAVE_LONGLONG not defined (found by Giles
3149 * Fixed incorrect handling of negative strings in
3150 mpi_read_string() (found by code coverage tests).
3151 * Fixed segfault on handling empty rsa_context in
3152 rsa_check_pubkey() and rsa_check_privkey() (found by
3153 code coverage tests).
3154 * Fixed incorrect handling of one single negative input
3155 value in mpi_add_abs() (found by code coverage tests).
3156 * Fixed incorrect handling of negative first input
3157 value in mpi_sub_abs() (found by code coverage tests).
3158 * Fixed incorrect handling of negative first input
3159 value in mpi_mod_mpi() and mpi_mod_int(). Resulting
3160 change also affects mpi_write_string() (found by code
3162 * Corrected is_prime() results for 0, 1 and 2 (found by
3163 code coverage tests).
3164 * Fixed Camellia and XTEA for 64-bit Windows systems.
3166 = Version 0.11.1 released on 2009-05-17
3167 * Fixed missing functionality for SHA-224, SHA-256, SHA384,
3168 SHA-512 in rsa_pkcs1_sign()
3170 = Version 0.11.0 released on 2009-05-03
3171 * Fixed a bug in mpi_gcd() so that it also works when both
3172 input numbers are even and added testcases to check
3173 (found by Pierre Habouzit).
3174 * Added support for SHA-224, SHA-256, SHA-384 and SHA-512
3175 one way hash functions with the PKCS#1 v1.5 signing and
3177 * Fixed minor bug regarding mpi_gcd located within the
3178 POLARSSL_GENPRIME block.
3179 * Fixed minor memory leak in x509parse_crt() and added better
3180 handling of 'full' certificate chains (found by Mathias
3182 * Centralized file opening and reading for x509 files into
3184 * Made definition of net_htons() endian-clean for big endian
3185 systems (Found by Gernot).
3186 * Undefining POLARSSL_HAVE_ASM now also handles prevents asm in
3187 padlock and timing code.
3188 * Fixed an off-by-one buffer allocation in ssl_set_hostname()
3189 responsible for crashes and unwanted behaviour.
3190 * Added support for Certificate Revocation List (CRL) parsing.
3191 * Added support for CRL revocation to x509parse_verify() and
3193 * Fixed compatibility of XTEA and Camellia on a 64-bit system
3194 (found by Felix von Leitner).
3196 = Version 0.10.0 released on 2009-01-12
3197 * Migrated XySSL to PolarSSL
3198 * Added XTEA symmetric cipher
3199 * Added Camellia symmetric cipher
3200 * Added support for ciphersuites: SSL_RSA_CAMELLIA_128_SHA,
3201 SSL_RSA_CAMELLIA_256_SHA and SSL_EDH_RSA_CAMELLIA_256_SHA
3202 * Fixed dangerous bug that can cause a heap overflow in
3203 rsa_pkcs1_decrypt (found by Christophe Devine)
3205 ================================================================
3208 = Version 0.9 released on 2008-03-16
3210 * Added support for ciphersuite: SSL_RSA_AES_128_SHA
3211 * Enabled support for large files by default in aescrypt2.c
3212 * Preliminary openssl wrapper contributed by David Barrett
3213 * Fixed a bug in ssl_write() that caused the same payload to
3214 be sent twice in non-blocking mode when send returns EAGAIN
3215 * Fixed ssl_parse_client_hello(): session id and challenge must
3216 not be swapped in the SSLv2 ClientHello (found by Greg Robson)
3217 * Added user-defined callback debug function (Krystian Kolodziej)
3218 * Before freeing a certificate, properly zero out all cert. data
3219 * Fixed the "mode" parameter so that encryption/decryption are
3220 not swapped on PadLock; also fixed compilation on older versions
3221 of gcc (bug reported by David Barrett)
3222 * Correctly handle the case in padlock_xcryptcbc() when input or
3223 output data is non-aligned by falling back to the software
3224 implementation, as VIA Nehemiah cannot handle non-aligned buffers
3225 * Fixed a memory leak in x509parse_crt() which was reported by Greg
3226 Robson-Garth; some x509write.c fixes by Pascal Vizeli, thanks to
3227 Matthew Page who reported several bugs
3228 * Fixed x509_get_ext() to accept some rare certificates which have
3229 an INTEGER instead of a BOOLEAN for BasicConstraints::cA.
3230 * Added support on the client side for the TLS "hostname" extension
3231 (patch contributed by David Patino)
3232 * Make x509parse_verify() return BADCERT_CN_MISMATCH when an empty
3233 string is passed as the CN (bug reported by spoofy)
3234 * Added an option to enable/disable the BN assembly code
3235 * Updated rsa_check_privkey() to verify that (D*E) = 1 % (P-1)*(Q-1)
3236 * Disabled obsolete hash functions by default (MD2, MD4); updated
3237 selftest and benchmark to not test ciphers that have been disabled
3238 * Updated x509parse_cert_info() to correctly display byte 0 of the
3239 serial number, setup correct server port in the ssl client example
3240 * Fixed a critical denial-of-service with X.509 cert. verification:
3241 peer may cause xyssl to loop indefinitely by sending a certificate
3242 for which the RSA signature check fails (bug reported by Benoit)
3243 * Added test vectors for: AES-CBC, AES-CFB, DES-CBC and 3DES-CBC,
3244 HMAC-MD5, HMAC-SHA1, HMAC-SHA-256, HMAC-SHA-384, and HMAC-SHA-512
3245 * Fixed HMAC-SHA-384 and HMAC-SHA-512 (thanks to Josh Sinykin)
3246 * Modified ssl_parse_client_key_exchange() to protect against
3247 Daniel Bleichenbacher attack on PKCS#1 v1.5 padding, as well
3248 as the Klima-Pokorny-Rosa extension of Bleichenbacher's attack
3249 * Updated rsa_gen_key() so that ctx->N is always nbits in size
3250 * Fixed assembly PPC compilation errors on Mac OS X, thanks to
3251 David Barrett and Dusan Semen
3253 = Version 0.8 released on 2007-10-20
3255 * Modified the HMAC functions to handle keys larger
3256 than 64 bytes, thanks to Stephane Desneux and gary ng
3257 * Fixed ssl_read_record() to properly update the handshake
3258 message digests, which fixes IE6/IE7 client authentication
3259 * Cleaned up the XYSSL* #defines, suggested by Azriel Fasten
3260 * Fixed net_recv(), thanks to Lorenz Schori and Egon Kocjan
3261 * Added user-defined callbacks for handling I/O and sessions
3262 * Added lots of debugging output in the SSL/TLS functions
3263 * Added preliminary X.509 cert. writing by Pascal Vizeli
3264 * Added preliminary support for the VIA PadLock routines
3265 * Added AES-CFB mode of operation, contributed by chmike
3266 * Added an SSL/TLS stress testing program (ssl_test.c)
3267 * Updated the RSA PKCS#1 code to allow choosing between
3268 RSA_PUBLIC and RSA_PRIVATE, as suggested by David Barrett
3269 * Updated ssl_read() to skip 0-length records from OpenSSL
3270 * Fixed the make install target to comply with *BSD make
3271 * Fixed a bug in mpi_read_binary() on 64-bit platforms
3272 * mpi_is_prime() speedups, thanks to Kevin McLaughlin
3273 * Fixed a long standing memory leak in mpi_is_prime()
3274 * Replaced realloc with malloc in mpi_grow(), and set
3275 the sign of zero as positive in mpi_init() (reported
3276 by Jonathan M. McCune)
3278 = Version 0.7 released on 2007-07-07
3280 * Added support for the MicroBlaze soft-core processor
3281 * Fixed a bug in ssl_tls.c which sometimes prevented SSL
3282 connections from being established with non-blocking I/O
3283 * Fixed a couple bugs in the VS6 and UNIX Makefiles
3284 * Fixed the "PIC register ebx clobbered in asm" bug
3285 * Added HMAC starts/update/finish support functions
3286 * Added the SHA-224, SHA-384 and SHA-512 hash functions
3287 * Fixed the net_set_*block routines, thanks to Andreas
3288 * Added a few demonstration programs: md5sum, sha1sum,
3289 dh_client, dh_server, rsa_genkey, rsa_sign, rsa_verify
3290 * Added new bignum import and export helper functions
3291 * Rewrote README.txt in program/ssl/ca to better explain
3292 how to create a test PKI
3294 = Version 0.6 released on 2007-04-01
3296 * Ciphers used in SSL/TLS can now be disabled at compile
3297 time, to reduce the memory footprint on embedded systems
3298 * Added multiply assembly code for the TriCore and modified
3299 havege_struct for this processor, thanks to David Patiño
3300 * Added multiply assembly code for 64-bit PowerPCs,
3301 thanks to Peking University and the OSU Open Source Lab
3302 * Added experimental support of Quantum Cryptography
3303 * Added support for autoconf, contributed by Arnaud Cornet
3304 * Fixed "long long" compilation issues on IA-64 and PPC64
3305 * Fixed a bug introduced in xyssl-0.5/timing.c: hardclock
3306 was not being correctly defined on ARM and MIPS
3308 = Version 0.5 released on 2007-03-01
3310 * Added multiply assembly code for SPARC and Alpha
3311 * Added (beta) support for non-blocking I/O operations
3312 * Implemented session resuming and client authentication
3313 * Fixed some portability issues on WinCE, MINIX 3, Plan9
3314 (thanks to Benjamin Newman), HP-UX, FreeBSD and Solaris
3315 * Improved the performance of the EDH key exchange
3316 * Fixed a bug that caused valid packets with a payload
3317 size of 16384 bytes to be rejected
3319 = Version 0.4 released on 2007-02-01
3321 * Added support for Ephemeral Diffie-Hellman key exchange
3322 * Added multiply asm code for SSE2, ARM, PPC, MIPS and M68K
3323 * Various improvement to the modular exponentiation code
3324 * Rewrote the headers to generate the API docs with doxygen
3325 * Fixed a bug in ssl_encrypt_buf (incorrect padding was
3326 generated) and in ssl_parse_client_hello (max. client
3327 version was not properly set), thanks to Didier Rebeix
3328 * Fixed another bug in ssl_parse_client_hello: clients with
3329 cipherlists larger than 96 bytes were incorrectly rejected
3330 * Fixed a couple memory leak in x509_read.c
3332 = Version 0.3 released on 2007-01-01
3334 * Added server-side SSLv3 and TLSv1.0 support
3335 * Multiple fixes to enhance the compatibility with g++,
3336 thanks to Xosé Antón Otero Ferreira
3337 * Fixed a bug in the CBC code, thanks to dowst; also,
3338 the bignum code is no longer dependent on long long
3339 * Updated rsa_pkcs1_sign to handle arbitrary large inputs
3340 * Updated timing.c for improved compatibility with i386
3341 and 486 processors, thanks to Arnaud Cornet
3343 = Version 0.2 released on 2006-12-01
3345 * Updated timing.c to support ARM and MIPS arch
3346 * Updated the MPI code to support 8086 on MSVC 1.5
3347 * Added the copyright notice at the top of havege.h
3348 * Fixed a bug in sha2_hmac, thanks to newsoft/Wenfang Zhang
3349 * Fixed a bug reported by Adrian Rüegsegger in x509_read_key
3350 * Fixed a bug reported by Torsten Lauter in ssl_read_record
3351 * Fixed a bug in rsa_check_privkey that would wrongly cause
3352 valid RSA keys to be dismissed (thanks to oldwolf)
3353 * Fixed a bug in mpi_is_prime that caused some primes to fail
3354 the Miller-Rabin primality test
3356 I'd also like to thank Younès Hafri for the CRUX linux port,
3357 Khalil Petit who added XySSL into pkgsrc and Arnaud Cornet
3358 who maintains the Debian package :-)
3360 = Version 0.1 released on 2006-11-01
projects / platform / upstream / connectedhomeip.git / blob