1 /* crypto/x509/x509_cmp.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.] */
58 #include <openssl/asn1.h>
59 #include <openssl/buf.h>
60 #include <openssl/digest.h>
61 #include <openssl/err.h>
62 #include <openssl/mem.h>
63 #include <openssl/obj.h>
64 #include <openssl/stack.h>
65 #include <openssl/x509.h>
66 #include <openssl/x509v3.h>
69 int X509_issuer_and_serial_cmp(const X509 *a, const X509 *b)
76 i=M_ASN1_INTEGER_cmp(ai->serialNumber,bi->serialNumber);
78 return(X509_NAME_cmp(ai->issuer,bi->issuer));
81 unsigned long X509_issuer_and_serial_hash(X509 *a)
88 EVP_MD_CTX_init(&ctx);
89 f=X509_NAME_oneline(a->cert_info->issuer,NULL,0);
90 if (!EVP_DigestInit_ex(&ctx, EVP_md5(), NULL))
92 if (!EVP_DigestUpdate(&ctx,(unsigned char *)f,strlen(f)))
95 if(!EVP_DigestUpdate(&ctx,(unsigned char *)a->cert_info->serialNumber->data,
96 (unsigned long)a->cert_info->serialNumber->length))
98 if (!EVP_DigestFinal_ex(&ctx,&(md[0]),NULL))
100 ret=( ((unsigned long)md[0] )|((unsigned long)md[1]<<8L)|
101 ((unsigned long)md[2]<<16L)|((unsigned long)md[3]<<24L)
104 EVP_MD_CTX_cleanup(&ctx);
108 int X509_issuer_name_cmp(const X509 *a, const X509 *b)
110 return(X509_NAME_cmp(a->cert_info->issuer,b->cert_info->issuer));
113 int X509_subject_name_cmp(const X509 *a, const X509 *b)
115 return(X509_NAME_cmp(a->cert_info->subject,b->cert_info->subject));
118 int X509_CRL_cmp(const X509_CRL *a, const X509_CRL *b)
120 return(X509_NAME_cmp(a->crl->issuer,b->crl->issuer));
123 int X509_CRL_match(const X509_CRL *a, const X509_CRL *b)
125 return memcmp(a->sha1_hash, b->sha1_hash, 20);
128 X509_NAME *X509_get_issuer_name(X509 *a)
130 return(a->cert_info->issuer);
133 unsigned long X509_issuer_name_hash(X509 *x)
135 return(X509_NAME_hash(x->cert_info->issuer));
138 unsigned long X509_issuer_name_hash_old(X509 *x)
140 return(X509_NAME_hash_old(x->cert_info->issuer));
143 X509_NAME *X509_get_subject_name(X509 *a)
145 return(a->cert_info->subject);
148 ASN1_INTEGER *X509_get_serialNumber(X509 *a)
150 return(a->cert_info->serialNumber);
153 unsigned long X509_subject_name_hash(X509 *x)
155 return(X509_NAME_hash(x->cert_info->subject));
158 unsigned long X509_subject_name_hash_old(X509 *x)
160 return(X509_NAME_hash_old(x->cert_info->subject));
163 /* Compare two certificates: they must be identical for
164 * this to work. NB: Although "cmp" operations are generally
165 * prototyped to take "const" arguments (eg. for use in
166 * STACKs), the way X509 handling is - these operations may
167 * involve ensuring the hashes are up-to-date and ensuring
168 * certain cert information is cached. So this is the point
169 * where the "depth-first" constification tree has to halt
172 int X509_cmp(const X509 *a, const X509 *b)
175 /* ensure hash is valid */
176 X509_check_purpose((X509 *)a, -1, 0);
177 X509_check_purpose((X509 *)b, -1, 0);
179 rv = memcmp(a->sha1_hash, b->sha1_hash, SHA_DIGEST_LENGTH);
182 /* Check for match against stored encoding too */
183 if (!a->cert_info->enc.modified && !b->cert_info->enc.modified)
185 rv = (int)(a->cert_info->enc.len - b->cert_info->enc.len);
188 return memcmp(a->cert_info->enc.enc, b->cert_info->enc.enc,
189 a->cert_info->enc.len);
195 int X509_NAME_cmp(const X509_NAME *a, const X509_NAME *b)
199 /* Ensure canonical encoding is present and up to date */
201 if (!a->canon_enc || a->modified)
203 ret = i2d_X509_NAME((X509_NAME *)a, NULL);
208 if (!b->canon_enc || b->modified)
210 ret = i2d_X509_NAME((X509_NAME *)b, NULL);
215 ret = a->canon_enclen - b->canon_enclen;
220 return memcmp(a->canon_enc, b->canon_enc, a->canon_enclen);
224 unsigned long X509_NAME_hash(X509_NAME *x)
227 unsigned char md[SHA_DIGEST_LENGTH];
229 /* Make sure X509_NAME structure contains valid cached encoding */
230 i2d_X509_NAME(x,NULL);
231 if (!EVP_Digest(x->canon_enc, x->canon_enclen, md, NULL, EVP_sha1(),
235 ret=( ((unsigned long)md[0] )|((unsigned long)md[1]<<8L)|
236 ((unsigned long)md[2]<<16L)|((unsigned long)md[3]<<24L)
242 /* I now DER encode the name and hash it. Since I cache the DER encoding,
243 * this is reasonably efficient. */
245 unsigned long X509_NAME_hash_old(X509_NAME *x)
249 unsigned char md[16];
251 /* Make sure X509_NAME structure contains valid cached encoding */
252 i2d_X509_NAME(x,NULL);
253 EVP_MD_CTX_init(&md_ctx);
254 /* EVP_MD_CTX_set_flags(&md_ctx, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW); */
255 if (EVP_DigestInit_ex(&md_ctx, EVP_md5(), NULL)
256 && EVP_DigestUpdate(&md_ctx, x->bytes->data, x->bytes->length)
257 && EVP_DigestFinal_ex(&md_ctx,md,NULL))
258 ret=(((unsigned long)md[0] )|((unsigned long)md[1]<<8L)|
259 ((unsigned long)md[2]<<16L)|((unsigned long)md[3]<<24L)
261 EVP_MD_CTX_cleanup(&md_ctx);
266 /* Search a stack of X509 for a match */
267 X509 *X509_find_by_issuer_and_serial(STACK_OF(X509) *sk, X509_NAME *name,
268 ASN1_INTEGER *serial)
277 cinf.serialNumber=serial;
280 for (i=0; i<sk_X509_num(sk); i++)
282 x509=sk_X509_value(sk,i);
283 if (X509_issuer_and_serial_cmp(x509,&x) == 0)
289 X509 *X509_find_by_subject(STACK_OF(X509) *sk, X509_NAME *name)
294 for (i=0; i<sk_X509_num(sk); i++)
296 x509=sk_X509_value(sk,i);
297 if (X509_NAME_cmp(X509_get_subject_name(x509),name) == 0)
303 EVP_PKEY *X509_get_pubkey(X509 *x)
305 if ((x == NULL) || (x->cert_info == NULL))
307 return(X509_PUBKEY_get(x->cert_info->key));
310 ASN1_BIT_STRING *X509_get0_pubkey_bitstr(const X509 *x)
313 return x->cert_info->key->public_key;
317 int X509_check_private_key(X509 *x, EVP_PKEY *k)
322 xk=X509_get_pubkey(x);
325 ret = EVP_PKEY_cmp(xk, k);
334 OPENSSL_PUT_ERROR(X509, X509_check_private_key, X509_R_KEY_VALUES_MISMATCH);
337 OPENSSL_PUT_ERROR(X509, X509_check_private_key, X509_R_KEY_TYPE_MISMATCH);
340 OPENSSL_PUT_ERROR(X509, X509_check_private_key, X509_R_UNKNOWN_KEY_TYPE);
349 /* Check a suite B algorithm is permitted: pass in a public key and
350 * the NID of its signature (or 0 if no signature). The pflags is
351 * a pointer to a flags field which must contain the suite B verification
356 static int check_suite_b(EVP_PKEY *pkey, int sign_nid, unsigned long *pflags)
358 const EC_GROUP *grp = NULL;
360 if (pkey && pkey->type == EVP_PKEY_EC)
361 grp = EC_KEY_get0_group(pkey->pkey.ec);
363 return X509_V_ERR_SUITE_B_INVALID_ALGORITHM;
364 curve_nid = EC_GROUP_get_curve_name(grp);
365 /* Check curve is consistent with LOS */
366 if (curve_nid == NID_secp384r1) /* P-384 */
368 /* Check signature algorithm is consistent with
371 if (sign_nid != -1 && sign_nid != NID_ecdsa_with_SHA384)
372 return X509_V_ERR_SUITE_B_INVALID_SIGNATURE_ALGORITHM;
373 if (!(*pflags & X509_V_FLAG_SUITEB_192_LOS))
374 return X509_V_ERR_SUITE_B_LOS_NOT_ALLOWED;
375 /* If we encounter P-384 we cannot use P-256 later */
376 *pflags &= ~X509_V_FLAG_SUITEB_128_LOS_ONLY;
378 else if (curve_nid == NID_X9_62_prime256v1) /* P-256 */
380 if (sign_nid != -1 && sign_nid != NID_ecdsa_with_SHA256)
381 return X509_V_ERR_SUITE_B_INVALID_SIGNATURE_ALGORITHM;
382 if (!(*pflags & X509_V_FLAG_SUITEB_128_LOS_ONLY))
383 return X509_V_ERR_SUITE_B_LOS_NOT_ALLOWED;
386 return X509_V_ERR_SUITE_B_INVALID_CURVE;
391 int X509_chain_check_suiteb(int *perror_depth, X509 *x, STACK_OF(X509) *chain,
397 unsigned long tflags;
398 if (!(flags & X509_V_FLAG_SUITEB_128_LOS))
401 /* If no EE certificate passed in must be first in chain */
404 x = sk_X509_value(chain, 0);
410 if (X509_get_version(x) != 2)
412 rv = X509_V_ERR_SUITE_B_INVALID_VERSION;
413 /* Correct error depth */
418 pk = X509_get_pubkey(x);
419 /* Check EE key only */
420 rv = check_suite_b(pk, -1, &tflags);
423 /* Correct error depth */
427 for(; i < sk_X509_num(chain); i++)
429 sign_nid = X509_get_signature_nid(x);
430 x = sk_X509_value(chain, i);
431 if (X509_get_version(x) != 2)
433 rv = X509_V_ERR_SUITE_B_INVALID_VERSION;
437 pk = X509_get_pubkey(x);
438 rv = check_suite_b(pk, sign_nid, &tflags);
443 /* Final check: root CA signature */
444 rv = check_suite_b(pk, X509_get_signature_nid(x), &tflags);
450 /* Invalid signature or LOS errors are for previous cert */
451 if ((rv == X509_V_ERR_SUITE_B_INVALID_SIGNATURE_ALGORITHM
452 || rv == X509_V_ERR_SUITE_B_LOS_NOT_ALLOWED) && i)
454 /* If we have LOS error and flags changed then we are signing
455 * P-384 with P-256. Use more meaninggul error.
457 if (rv == X509_V_ERR_SUITE_B_LOS_NOT_ALLOWED && flags != tflags)
458 rv = X509_V_ERR_SUITE_B_CANNOT_SIGN_P_384_WITH_P_256;
465 int X509_CRL_check_suiteb(X509_CRL *crl, EVP_PKEY *pk, unsigned long flags)
468 if (!(flags & X509_V_FLAG_SUITEB_128_LOS))
470 sign_nid = OBJ_obj2nid(crl->crl->sig_alg->algorithm);
471 return check_suite_b(pk, sign_nid, &flags);
474 /* Not strictly speaking an "up_ref" as a STACK doesn't have a reference
475 * count but it has the same effect by duping the STACK and upping the ref
476 * of each X509 structure.
478 STACK_OF(X509) *X509_chain_up_ref(STACK_OF(X509) *chain)
482 ret = sk_X509_dup(chain);
483 for (i = 0; i < sk_X509_num(ret); i++)
485 X509_up_ref(sk_X509_value(ret, i));