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Rank GCM before CBC in ciphersuite_preference

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Manuel Pégourié-Gonnard 2013-10-25 17:08:15 +02:00
parent 8d01eea7af
commit 6fb0f745be
1 changed files with 54 additions and 38 deletions
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92
library/ssl_ciphersuites.c
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@ -40,48 +40,57 @@
/*
* Ordered from most preferred to least preferred in terms of security.
*
* Current rule (except weak and null which come last):
* 1. By key exchange:
* Forward-secure non-PSK > forward-secure PSK > other non-PSK > other PSK
* 2. By key length and cipher:
* AES-256 > Camellia-256 > AES-128 > Camellia-128 > 3DES > RC4
* 3. By cipher mode when relevant GCM > CBC
* 4. By hash function used
* 5. By key exchange/auth again: EC > non-EC
*/
static const int ciphersuite_preference[] =
{
/* All AES-256 ephemeral suites */
TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384,
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384,
TLS_DHE_RSA_WITH_AES_256_CBC_SHA256,
TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
TLS_DHE_RSA_WITH_AES_256_GCM_SHA384,
TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384,
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384,
TLS_DHE_RSA_WITH_AES_256_CBC_SHA256,
TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,
TLS_DHE_RSA_WITH_AES_256_CBC_SHA,
/* All CAMELLIA-256 ephemeral suites */
TLS_ECDHE_ECDSA_WITH_CAMELLIA_256_GCM_SHA384,
TLS_ECDHE_RSA_WITH_CAMELLIA_256_GCM_SHA384,
TLS_DHE_RSA_WITH_CAMELLIA_256_GCM_SHA384,
TLS_ECDHE_ECDSA_WITH_CAMELLIA_256_CBC_SHA384,
TLS_ECDHE_RSA_WITH_CAMELLIA_256_CBC_SHA384,
TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA256,
TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA,
TLS_ECDHE_ECDSA_WITH_CAMELLIA_256_GCM_SHA384,
TLS_ECDHE_RSA_WITH_CAMELLIA_256_GCM_SHA384,
TLS_DHE_RSA_WITH_CAMELLIA_256_GCM_SHA384,
/* All AES-128 ephemeral suites */
TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256,
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256,
TLS_DHE_RSA_WITH_AES_128_CBC_SHA256,
TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
TLS_DHE_RSA_WITH_AES_128_GCM_SHA256,
TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256,
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256,
TLS_DHE_RSA_WITH_AES_128_CBC_SHA256,
TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,
TLS_DHE_RSA_WITH_AES_128_CBC_SHA,
/* All CAMELLIA-128 ephemeral suites */
TLS_ECDHE_ECDSA_WITH_CAMELLIA_128_GCM_SHA256,
TLS_ECDHE_RSA_WITH_CAMELLIA_128_GCM_SHA256,
TLS_DHE_RSA_WITH_CAMELLIA_128_GCM_SHA256,
TLS_ECDHE_ECDSA_WITH_CAMELLIA_128_CBC_SHA256,
TLS_ECDHE_RSA_WITH_CAMELLIA_128_CBC_SHA256,
TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA256,
TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA,
TLS_ECDHE_ECDSA_WITH_CAMELLIA_128_GCM_SHA256,
TLS_ECDHE_RSA_WITH_CAMELLIA_128_GCM_SHA256,
TLS_DHE_RSA_WITH_CAMELLIA_128_GCM_SHA256,
/* All remaining >= 128-bit ephemeral suites */
TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA,
@ -91,46 +100,48 @@ static const int ciphersuite_preference[] =
TLS_ECDHE_RSA_WITH_RC4_128_SHA,
/* The PSK ephemeral suites */
TLS_ECDHE_PSK_WITH_AES_256_CBC_SHA384,
TLS_ECDHE_PSK_WITH_AES_256_CBC_SHA,
TLS_ECDHE_PSK_WITH_CAMELLIA_256_CBC_SHA384,
TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA256,
TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA,
TLS_ECDHE_PSK_WITH_CAMELLIA_128_CBC_SHA256,
TLS_ECDHE_PSK_WITH_3DES_EDE_CBC_SHA,
TLS_ECDHE_PSK_WITH_RC4_128_SHA,
TLS_DHE_PSK_WITH_AES_256_CBC_SHA384,
TLS_DHE_PSK_WITH_AES_256_CBC_SHA,
TLS_DHE_PSK_WITH_AES_256_GCM_SHA384,
TLS_DHE_PSK_WITH_CAMELLIA_256_CBC_SHA384,
TLS_ECDHE_PSK_WITH_AES_256_CBC_SHA384,
TLS_DHE_PSK_WITH_AES_256_CBC_SHA384,
TLS_ECDHE_PSK_WITH_AES_256_CBC_SHA,
TLS_DHE_PSK_WITH_AES_256_CBC_SHA,
TLS_DHE_PSK_WITH_CAMELLIA_256_GCM_SHA384,
TLS_DHE_PSK_WITH_AES_128_CBC_SHA256,
TLS_DHE_PSK_WITH_AES_128_CBC_SHA,
TLS_ECDHE_PSK_WITH_CAMELLIA_256_CBC_SHA384,
TLS_DHE_PSK_WITH_CAMELLIA_256_CBC_SHA384,
TLS_DHE_PSK_WITH_AES_128_GCM_SHA256,
TLS_DHE_PSK_WITH_CAMELLIA_128_CBC_SHA256,
TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA256,
TLS_DHE_PSK_WITH_AES_128_CBC_SHA256,
TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA,
TLS_DHE_PSK_WITH_AES_128_CBC_SHA,
TLS_DHE_PSK_WITH_CAMELLIA_128_GCM_SHA256,
TLS_DHE_PSK_WITH_CAMELLIA_128_CBC_SHA256,
TLS_ECDHE_PSK_WITH_CAMELLIA_128_CBC_SHA256,
TLS_ECDHE_PSK_WITH_3DES_EDE_CBC_SHA,
TLS_DHE_PSK_WITH_3DES_EDE_CBC_SHA,
TLS_ECDHE_PSK_WITH_RC4_128_SHA,
TLS_DHE_PSK_WITH_RC4_128_SHA,
/* All AES-256 suites */
TLS_RSA_WITH_AES_256_CBC_SHA256,
TLS_RSA_WITH_AES_256_GCM_SHA384,
TLS_RSA_WITH_AES_256_CBC_SHA256,
TLS_RSA_WITH_AES_256_CBC_SHA,
/* All CAMELLIA-256 suites */
TLS_RSA_WITH_CAMELLIA_256_GCM_SHA384,
TLS_RSA_WITH_CAMELLIA_256_CBC_SHA256,
TLS_RSA_WITH_CAMELLIA_256_CBC_SHA,
TLS_RSA_WITH_CAMELLIA_256_GCM_SHA384,
/* All AES-128 suites */
TLS_RSA_WITH_AES_128_CBC_SHA256,
TLS_RSA_WITH_AES_128_GCM_SHA256,
TLS_RSA_WITH_AES_128_CBC_SHA256,
TLS_RSA_WITH_AES_128_CBC_SHA,
/* All CAMELLIA-128 suites */
TLS_RSA_WITH_CAMELLIA_128_GCM_SHA256,
TLS_RSA_WITH_CAMELLIA_128_CBC_SHA256,
TLS_RSA_WITH_CAMELLIA_128_CBC_SHA,
TLS_RSA_WITH_CAMELLIA_128_GCM_SHA256,
/* All remaining >= 128-bit suites */
TLS_RSA_WITH_3DES_EDE_CBC_SHA,
@ -138,30 +149,34 @@ static const int ciphersuite_preference[] =
TLS_RSA_WITH_RC4_128_MD5,
/* The RSA PSK suites */
TLS_RSA_PSK_WITH_AES_256_GCM_SHA384,
TLS_RSA_PSK_WITH_AES_256_CBC_SHA384,
TLS_RSA_PSK_WITH_AES_256_CBC_SHA,
TLS_RSA_PSK_WITH_AES_256_GCM_SHA384,
TLS_RSA_PSK_WITH_CAMELLIA_256_CBC_SHA384,
TLS_RSA_PSK_WITH_CAMELLIA_256_GCM_SHA384,
TLS_RSA_PSK_WITH_CAMELLIA_256_CBC_SHA384,
TLS_RSA_PSK_WITH_AES_128_GCM_SHA256,
TLS_RSA_PSK_WITH_AES_128_CBC_SHA256,
TLS_RSA_PSK_WITH_AES_128_CBC_SHA,
TLS_RSA_PSK_WITH_AES_128_GCM_SHA256,
TLS_RSA_PSK_WITH_CAMELLIA_128_CBC_SHA256,
TLS_RSA_PSK_WITH_CAMELLIA_128_GCM_SHA256,
TLS_RSA_PSK_WITH_CAMELLIA_128_CBC_SHA256,
TLS_RSA_PSK_WITH_3DES_EDE_CBC_SHA,
TLS_RSA_PSK_WITH_RC4_128_SHA,
/* The PSK suites */
TLS_PSK_WITH_AES_256_GCM_SHA384,
TLS_PSK_WITH_AES_256_CBC_SHA384,
TLS_PSK_WITH_AES_256_CBC_SHA,
TLS_PSK_WITH_AES_256_GCM_SHA384,
TLS_PSK_WITH_CAMELLIA_256_CBC_SHA384,
TLS_PSK_WITH_CAMELLIA_256_GCM_SHA384,
TLS_PSK_WITH_CAMELLIA_256_CBC_SHA384,
TLS_PSK_WITH_AES_128_GCM_SHA256,
TLS_PSK_WITH_AES_128_CBC_SHA256,
TLS_PSK_WITH_AES_128_CBC_SHA,
TLS_PSK_WITH_AES_128_GCM_SHA256,
TLS_PSK_WITH_CAMELLIA_128_CBC_SHA256,
TLS_PSK_WITH_CAMELLIA_128_GCM_SHA256,
TLS_PSK_WITH_CAMELLIA_128_CBC_SHA256,
TLS_PSK_WITH_3DES_EDE_CBC_SHA,
TLS_PSK_WITH_RC4_128_SHA,
@ -178,6 +193,7 @@ static const int ciphersuite_preference[] =
TLS_DHE_PSK_WITH_NULL_SHA384,
TLS_DHE_PSK_WITH_NULL_SHA256,
TLS_DHE_PSK_WITH_NULL_SHA,
TLS_RSA_WITH_NULL_SHA256,
TLS_RSA_WITH_NULL_SHA,
TLS_RSA_WITH_NULL_MD5,