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Store a MODP group we use for each TLS suite

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This commit is contained in:
Martin Willi 2010-09-02 19:24:56 +02:00
parent 08d8b9405b
commit 35d9c15d5e
2 changed files with 34 additions and 12 deletions
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39
src/libtls/tls_crypto.c
View File

@ -365,6 +365,7 @@ typedef struct {
tls_cipher_suite_t suite;
hash_algorithm_t hash;
pseudo_random_function_t prf;
diffie_hellman_group_t dh;
integrity_algorithm_t mac;
encryption_algorithm_t encr;
size_t encr_size;
@ -375,51 +376,51 @@ typedef struct {
*/
static suite_algs_t suite_algs[] = {
{ TLS_RSA_WITH_AES_128_CBC_SHA,
HASH_SHA1, PRF_HMAC_SHA1,
HASH_SHA1, PRF_HMAC_SHA1, MODP_NONE,
AUTH_HMAC_SHA1_160, ENCR_AES_CBC, 16
},
{ TLS_RSA_WITH_AES_128_CBC_SHA256,
HASH_SHA256, PRF_HMAC_SHA2_256,
HASH_SHA256, PRF_HMAC_SHA2_256, MODP_NONE,
AUTH_HMAC_SHA2_256_256, ENCR_AES_CBC, 16
},
{ TLS_RSA_WITH_AES_256_CBC_SHA,
HASH_SHA1, PRF_HMAC_SHA1,
HASH_SHA1, PRF_HMAC_SHA1, MODP_NONE,
AUTH_HMAC_SHA1_160, ENCR_AES_CBC, 32
},
{ TLS_RSA_WITH_AES_256_CBC_SHA256,
HASH_SHA256, PRF_HMAC_SHA2_256,
HASH_SHA256, PRF_HMAC_SHA2_256, MODP_NONE,
AUTH_HMAC_SHA2_256_256, ENCR_AES_CBC, 32
},
{ TLS_RSA_WITH_CAMELLIA_128_CBC_SHA,
HASH_SHA1, PRF_HMAC_SHA1,
HASH_SHA1, PRF_HMAC_SHA1, MODP_NONE,
AUTH_HMAC_SHA1_160, ENCR_CAMELLIA_CBC, 16
},
{ TLS_RSA_WITH_CAMELLIA_128_CBC_SHA256,
HASH_SHA256, PRF_HMAC_SHA2_256,
HASH_SHA256, PRF_HMAC_SHA2_256, MODP_NONE,
AUTH_HMAC_SHA2_256_256, ENCR_CAMELLIA_CBC, 16
},
{ TLS_RSA_WITH_CAMELLIA_256_CBC_SHA,
HASH_SHA1, PRF_HMAC_SHA1,
HASH_SHA1, PRF_HMAC_SHA1, MODP_NONE,
AUTH_HMAC_SHA1_160, ENCR_CAMELLIA_CBC, 32
},
{ TLS_RSA_WITH_CAMELLIA_256_CBC_SHA256,
HASH_SHA256, PRF_HMAC_SHA2_256,
HASH_SHA256, PRF_HMAC_SHA2_256, MODP_NONE,
AUTH_HMAC_SHA2_256_256, ENCR_CAMELLIA_CBC, 32
},
{ TLS_RSA_WITH_3DES_EDE_CBC_SHA,
HASH_SHA1, PRF_HMAC_SHA1,
HASH_SHA1, PRF_HMAC_SHA1, MODP_NONE,
AUTH_HMAC_SHA1_160, ENCR_3DES, 0
},
{ TLS_RSA_WITH_NULL_SHA,
HASH_SHA1, PRF_HMAC_SHA1,
HASH_SHA1, PRF_HMAC_SHA1, MODP_NONE,
AUTH_HMAC_SHA1_160, ENCR_NULL, 0
},
{ TLS_RSA_WITH_NULL_SHA256,
HASH_SHA256, PRF_HMAC_SHA2_256,
HASH_SHA256, PRF_HMAC_SHA2_256, MODP_NONE,
AUTH_HMAC_SHA2_256_256, ENCR_NULL, 0
},
{ TLS_RSA_WITH_NULL_MD5,
HASH_MD5, PRF_HMAC_MD5,
HASH_MD5, PRF_HMAC_MD5, MODP_NONE,
AUTH_HMAC_MD5_128, ENCR_NULL, 0
},
};
@ -624,6 +625,19 @@ METHOD(tls_crypto_t, select_cipher_suite, tls_cipher_suite_t,
return 0;
}
METHOD(tls_crypto_t, get_dh_group, diffie_hellman_group_t,
private_tls_crypto_t *this)
{
suite_algs_t *algs;
algs = find_suite(this->suite);
if (algs)
{
return algs->dh;
}
return MODP_NONE;
}
METHOD(tls_crypto_t, get_signature_algorithms, void,
private_tls_crypto_t *this, tls_writer_t *writer)
{
@ -1129,6 +1143,7 @@ tls_crypto_t *tls_crypto_create(tls_t *tls)
.public = {
.get_cipher_suites = _get_cipher_suites,
.select_cipher_suite = _select_cipher_suite,
.get_dh_group = _get_dh_group,
.get_signature_algorithms = _get_signature_algorithms,
.set_protection = _set_protection,
.append_handshake = _append_handshake,

7
src/libtls/tls_crypto.h
View File

@ -328,6 +328,13 @@ struct tls_crypto_t {
tls_cipher_suite_t (*select_cipher_suite)(tls_crypto_t *this,
tls_cipher_suite_t *suites, int count);
/**
* Get the Diffie-Hellman group to use, if any.
*
* @return Diffie Hellman group, ord MODP_NONE
*/
diffie_hellman_group_t (*get_dh_group)(tls_crypto_t *this);
/**
* Write the list of supported hash/sig algorithms to writer.
*