nss/lib/ssl/sslenum.c

   1 /*
   2  * Table enumerating all implemented cipher suites
   3  * Part of public API.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   8
   9 #include "ssl.h"
  10 #include "sslproto.h"
  11
  12 /*
  13  * The ordering of cipher suites in this table must match the ordering in
  14  * the cipherSuites table in ssl3con.c.
  15  *
  16  * If new ECC cipher suites are added, also update the ssl3CipherSuite arrays
  17  * in ssl3ecc.c.
  18  *
  19  * Finally, update the ssl_V3_SUITES_IMPLEMENTED macro in sslimpl.h.
  20  *
  21  * The ordering is as follows:
  22  *    * No-encryption cipher suites last
  23  *    * Export/weak/obsolete cipher suites before no-encryption cipher suites
  24  *    * Order by key exchange algorithm: ECDHE, then DHE, then ECDH, RSA.
  25  *    * Within key agreement sections, order by symmetric encryption algorithm:
  26  *      AES-128, then Camellia-128, then AES-256, then Camellia-256, then SEED,
  27  *      then FIPS-3DES, then 3DES, then RC4. AES is commonly accepted as a
  28  *      strong cipher internationally, and is often hardware-accelerated.
  29  *      Camellia also has wide international support across standards
  30  *      organizations. SEED is only recommended by the Korean government. 3DES
  31  *      only provides 112 bits of security. RC4 is now deprecated or forbidden
  32  *      by many standards organizations.
  33  *    * Within symmetric algorithm sections, order by message authentication
  34  *      algorithm: GCM, then HMAC-SHA1, then HMAC-SHA256, then HMAC-MD5.
  35  *    * Within message authentication algorithm sections, order by asymmetric
  36  *      signature algorithm: ECDSA, then RSA, then DSS.
  37  *
  38  * Exception: Because some servers ignore the high-order byte of the cipher
  39  * suite ID, we must be careful about adding cipher suites with IDs larger
  40  * than 0x00ff; see bug 946147. For these broken servers, the first four cipher\r
  41  * suites, with the MSB zeroed, look like:\r
  42  *      TLS_KRB5_EXPORT_WITH_RC4_40_MD5 {0x00,0x2B }\r
  43  *      TLS_RSA_WITH_AES_128_CBC_SHA { 0x00,0x2F }\r
  44  *      TLS_RSA_WITH_3DES_EDE_CBC_SHA { 0x00,0x0A }\r
  45  *      TLS_RSA_WITH_DES_CBC_SHA { 0x00,0x09 }\r
  46  * The broken server only supports the third and fourth ones and will select
  47  * the third one.
  48  */
  49 const PRUint16 SSL_ImplementedCiphers[] = {
  50 #ifdef NSS_ENABLE_ECC
  51     TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
  52     TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
  53     /* TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA must appear before
  54      * TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA to work around bug 946147.
  55      */
  56     TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,
  57     TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,
  58     TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,
  59     TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256,
  60     TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256,
  61     TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,
  62     TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA,
  63     TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA,
  64     TLS_ECDHE_ECDSA_WITH_RC4_128_SHA,
  65     TLS_ECDHE_RSA_WITH_RC4_128_SHA,
  66 #endif /* NSS_ENABLE_ECC */
  67
  68     TLS_DHE_RSA_WITH_AES_128_GCM_SHA256,
  69     TLS_DHE_RSA_WITH_AES_128_CBC_SHA,
  70     TLS_DHE_DSS_WITH_AES_128_CBC_SHA,
  71     TLS_DHE_RSA_WITH_AES_128_CBC_SHA256,
  72     TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA,
  73     TLS_DHE_DSS_WITH_CAMELLIA_128_CBC_SHA,
  74     TLS_DHE_RSA_WITH_AES_256_CBC_SHA,
  75     TLS_DHE_DSS_WITH_AES_256_CBC_SHA,
  76     TLS_DHE_RSA_WITH_AES_256_CBC_SHA256,
  77     TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA,
  78     TLS_DHE_DSS_WITH_CAMELLIA_256_CBC_SHA,
  79     SSL_DHE_RSA_WITH_3DES_EDE_CBC_SHA,
  80     SSL_DHE_DSS_WITH_3DES_EDE_CBC_SHA,
  81     TLS_DHE_DSS_WITH_RC4_128_SHA,
  82
  83 #ifdef NSS_ENABLE_ECC
  84     TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA,
  85     TLS_ECDH_RSA_WITH_AES_128_CBC_SHA,
  86     TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA,
  87     TLS_ECDH_RSA_WITH_AES_256_CBC_SHA,
  88     TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA,
  89     TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA,
  90     TLS_ECDH_ECDSA_WITH_RC4_128_SHA,
  91     TLS_ECDH_RSA_WITH_RC4_128_SHA,
  92 #endif /* NSS_ENABLE_ECC */
  93
  94     TLS_RSA_WITH_AES_128_GCM_SHA256,
  95     TLS_RSA_WITH_AES_128_CBC_SHA,
  96     TLS_RSA_WITH_AES_128_CBC_SHA256,
  97     TLS_RSA_WITH_CAMELLIA_128_CBC_SHA,
  98     TLS_RSA_WITH_AES_256_CBC_SHA,
  99     TLS_RSA_WITH_AES_256_CBC_SHA256,
 100     TLS_RSA_WITH_CAMELLIA_256_CBC_SHA,
 101     TLS_RSA_WITH_SEED_CBC_SHA,
 102     SSL_RSA_FIPS_WITH_3DES_EDE_CBC_SHA,
 103     SSL_RSA_WITH_3DES_EDE_CBC_SHA,
 104     SSL_RSA_WITH_RC4_128_SHA,
 105     SSL_RSA_WITH_RC4_128_MD5,
 106
 107     /* 56-bit DES "domestic" cipher suites */
 108     SSL_DHE_RSA_WITH_DES_CBC_SHA,
 109     SSL_DHE_DSS_WITH_DES_CBC_SHA,
 110     SSL_RSA_FIPS_WITH_DES_CBC_SHA,
 111     SSL_RSA_WITH_DES_CBC_SHA,
 112
 113     /* export ciphersuites with 1024-bit public key exchange keys */
 114     TLS_RSA_EXPORT1024_WITH_RC4_56_SHA,
 115     TLS_RSA_EXPORT1024_WITH_DES_CBC_SHA,
 116
 117     /* export ciphersuites with 512-bit public key exchange keys */
 118     SSL_RSA_EXPORT_WITH_RC4_40_MD5,
 119     SSL_RSA_EXPORT_WITH_RC2_CBC_40_MD5,
 120
 121     /* ciphersuites with no encryption */
 122 #ifdef NSS_ENABLE_ECC
 123     TLS_ECDHE_ECDSA_WITH_NULL_SHA,
 124     TLS_ECDHE_RSA_WITH_NULL_SHA,
 125     TLS_ECDH_RSA_WITH_NULL_SHA,
 126     TLS_ECDH_ECDSA_WITH_NULL_SHA,
 127 #endif /* NSS_ENABLE_ECC */
 128     SSL_RSA_WITH_NULL_SHA,
 129     TLS_RSA_WITH_NULL_SHA256,
 130     SSL_RSA_WITH_NULL_MD5,
 131
 132     /* SSL2 cipher suites. */
 133     SSL_EN_RC4_128_WITH_MD5,
 134     SSL_EN_RC2_128_CBC_WITH_MD5,
 135     SSL_EN_DES_192_EDE3_CBC_WITH_MD5,  /* actually 112, not 192 */
 136     SSL_EN_DES_64_CBC_WITH_MD5,
 137     SSL_EN_RC4_128_EXPORT40_WITH_MD5,
 138     SSL_EN_RC2_128_CBC_EXPORT40_WITH_MD5,
 139
 140     0
 141
 142 };
 143
 144 const PRUint16 SSL_NumImplementedCiphers =
 145     (sizeof SSL_ImplementedCiphers) / (sizeof SSL_ImplementedCiphers[0]) - 1;
 146
 147 const PRUint16 *
 148 SSL_GetImplementedCiphers(void)
 149 {
 150     return SSL_ImplementedCiphers;
 151 }
 152
 153 PRUint16
 154 SSL_GetNumImplementedCiphers(void)
 155 {
 156     return SSL_NumImplementedCiphers;
 157 }