net/third_party/nss/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 six cipher
  41  * suites, with the MSB zeroed, look like:
  42  *      TLS_DHE_RSA_EXPORT_WITH_DES40_CBC_SHA { 0x00,0x14 }
  43  *      TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA { 0x00,0x13 }
  44  *      TLS_KRB5_EXPORT_WITH_RC4_40_MD5 { 0x00,0x2B }
  45  *      TLS_RSA_WITH_AES_128_CBC_SHA { 0x00,0x2F }
  46  *      TLS_RSA_WITH_3DES_EDE_CBC_SHA { 0x00,0x0A }
  47  *      TLS_RSA_WITH_DES_CBC_SHA { 0x00,0x09 }
  48  * The broken server only supports the fifth and sixth ones and will select
  49  * the fifth one.
  50  */
  51 const PRUint16 SSL_ImplementedCiphers[] = {
  52 #ifndef NSS_DISABLE_ECC
  53     TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,
  54     TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,
  55     TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
  56     TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
  57     /* TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA must appear before
  58      * TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA to work around bug 946147.
  59      */
  60     TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,
  61     TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,
  62     TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,
  63     TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256,
  64     TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256,
  65     TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,
  66     TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA,
  67     TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA,
  68     TLS_ECDHE_ECDSA_WITH_RC4_128_SHA,
  69     TLS_ECDHE_RSA_WITH_RC4_128_SHA,
  70 #endif /* NSS_DISABLE_ECC */
  71
  72     TLS_DHE_RSA_WITH_AES_128_GCM_SHA256,
  73     TLS_DHE_RSA_WITH_AES_128_CBC_SHA,
  74     TLS_DHE_DSS_WITH_AES_128_CBC_SHA,
  75     TLS_DHE_RSA_WITH_AES_128_CBC_SHA256,
  76     TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA,
  77     TLS_DHE_DSS_WITH_CAMELLIA_128_CBC_SHA,
  78     TLS_DHE_RSA_WITH_AES_256_CBC_SHA,
  79     TLS_DHE_DSS_WITH_AES_256_CBC_SHA,
  80     TLS_DHE_RSA_WITH_AES_256_CBC_SHA256,
  81     TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA,
  82     TLS_DHE_DSS_WITH_CAMELLIA_256_CBC_SHA,
  83     TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA,
  84     TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA,
  85     TLS_DHE_DSS_WITH_RC4_128_SHA,
  86
  87 #ifndef NSS_DISABLE_ECC
  88     TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA,
  89     TLS_ECDH_RSA_WITH_AES_128_CBC_SHA,
  90     TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA,
  91     TLS_ECDH_RSA_WITH_AES_256_CBC_SHA,
  92     TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA,
  93     TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA,
  94     TLS_ECDH_ECDSA_WITH_RC4_128_SHA,
  95     TLS_ECDH_RSA_WITH_RC4_128_SHA,
  96 #endif /* NSS_DISABLE_ECC */
  97
  98     TLS_RSA_WITH_AES_128_GCM_SHA256,
  99     TLS_RSA_WITH_AES_128_CBC_SHA,
 100     TLS_RSA_WITH_AES_128_CBC_SHA256,
 101     TLS_RSA_WITH_CAMELLIA_128_CBC_SHA,
 102     TLS_RSA_WITH_AES_256_CBC_SHA,
 103     TLS_RSA_WITH_AES_256_CBC_SHA256,
 104     TLS_RSA_WITH_CAMELLIA_256_CBC_SHA,
 105     TLS_RSA_WITH_SEED_CBC_SHA,
 106     SSL_RSA_FIPS_WITH_3DES_EDE_CBC_SHA,
 107     TLS_RSA_WITH_3DES_EDE_CBC_SHA,
 108     TLS_RSA_WITH_RC4_128_SHA,
 109     TLS_RSA_WITH_RC4_128_MD5,
 110
 111     /* 56-bit DES "domestic" cipher suites */
 112     TLS_DHE_RSA_WITH_DES_CBC_SHA,
 113     TLS_DHE_DSS_WITH_DES_CBC_SHA,
 114     SSL_RSA_FIPS_WITH_DES_CBC_SHA,
 115     TLS_RSA_WITH_DES_CBC_SHA,
 116
 117     /* export ciphersuites with 1024-bit public key exchange keys */
 118     TLS_RSA_EXPORT1024_WITH_RC4_56_SHA,
 119     TLS_RSA_EXPORT1024_WITH_DES_CBC_SHA,
 120
 121     /* export ciphersuites with 512-bit public key exchange keys */
 122     TLS_RSA_EXPORT_WITH_RC4_40_MD5,
 123     TLS_RSA_EXPORT_WITH_RC2_CBC_40_MD5,
 124
 125     /* ciphersuites with no encryption */
 126 #ifndef NSS_DISABLE_ECC
 127     TLS_ECDHE_ECDSA_WITH_NULL_SHA,
 128     TLS_ECDHE_RSA_WITH_NULL_SHA,
 129     TLS_ECDH_RSA_WITH_NULL_SHA,
 130     TLS_ECDH_ECDSA_WITH_NULL_SHA,
 131 #endif /* NSS_DISABLE_ECC */
 132     TLS_RSA_WITH_NULL_SHA,
 133     TLS_RSA_WITH_NULL_SHA256,
 134     TLS_RSA_WITH_NULL_MD5,
 135
 136     /* SSL2 cipher suites. */
 137     SSL_EN_RC4_128_WITH_MD5,
 138     SSL_EN_RC2_128_CBC_WITH_MD5,
 139     SSL_EN_DES_192_EDE3_CBC_WITH_MD5,  /* actually 112, not 192 */
 140     SSL_EN_DES_64_CBC_WITH_MD5,
 141     SSL_EN_RC4_128_EXPORT40_WITH_MD5,
 142     SSL_EN_RC2_128_CBC_EXPORT40_WITH_MD5,
 143
 144     0
 145
 146 };
 147
 148 const PRUint16 SSL_NumImplementedCiphers =
 149     (sizeof SSL_ImplementedCiphers) / (sizeof SSL_ImplementedCiphers[0]) - 1;
 150
 151 const PRUint16 *
 152 SSL_GetImplementedCiphers(void)
 153 {
 154     return SSL_ImplementedCiphers;
 155 }
 156
 157 PRUint16
 158 SSL_GetNumImplementedCiphers(void)
 159 {
 160     return SSL_NumImplementedCiphers;
 161 }