diff options
Diffstat (limited to 'lib/state.c')
| -rw-r--r-- | lib/state.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/lib/state.c b/lib/state.c index 35ebb2a230..d4d5254228 100644 --- a/lib/state.c +++ b/lib/state.c @@ -230,6 +230,32 @@ gnutls_compression_get(gnutls_session_t session) return GNUTLS_COMP_NULL; } +/** + * gnutls_prf_hash_get: + * @session: is a #gnutls_session_t type. + * + * Get the currently used hash algorithm. In TLS 1.3, the hash + * algorithm is used for both the key derivation function and + * handshake message authentication code. In TLS 1.2, it matches the + * hash algorithm used for PRF. + * + * Returns: the currently used hash algorithm, a + * #gnutls_digest_algorithm_t value. + * + * Since: 3.6.13 + **/ +gnutls_digest_algorithm_t +gnutls_prf_hash_get(const gnutls_session_t session) +{ + if (session->security_parameters.prf == NULL) + return gnutls_assert_val(GNUTLS_DIG_UNKNOWN); + + if (session->security_parameters.prf->id >= GNUTLS_MAC_AEAD) + return gnutls_assert_val(GNUTLS_DIG_UNKNOWN); + + return (gnutls_digest_algorithm_t)session->security_parameters.prf->id; +} + void reset_binders(gnutls_session_t session) { _gnutls_free_temp_key_datum(&session->key.binders[0].psk); |