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move tls12prf_from_cs

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Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
This commit is contained in:
Jerry Yu
2022-02-17 14:34:10 +08:00
parent 0b3d7c1ea1
commit 392112c058
1 changed files with 19 additions and 28 deletions
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47
library/ssl_tls.c
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@@ -4242,34 +4242,6 @@ int mbedtls_ssl_context_save( mbedtls_ssl_context *ssl,
return( mbedtls_ssl_session_reset_int( ssl, 0 ) ); return( mbedtls_ssl_session_reset_int( ssl, 0 ) );
} }
/*
* Helper to get TLS 1.2 PRF from ciphersuite
* (Duplicates bits of logic from ssl_set_handshake_prfs().)
*/
typedef int (*tls_prf_fn)( const unsigned char *secret, size_t slen,
const char *label,
const unsigned char *random, size_t rlen,
unsigned char *dstbuf, size_t dlen );
static tls_prf_fn ssl_tls12prf_from_cs( int ciphersuite_id )
{
#if defined(MBEDTLS_SSL_PROTO_TLS1_2)
#if defined(MBEDTLS_SHA384_C)
const mbedtls_ssl_ciphersuite_t * const ciphersuite_info =
mbedtls_ssl_ciphersuite_from_id( ciphersuite_id );
if( ciphersuite_info->mac == MBEDTLS_MD_SHA384 )
return( tls_prf_sha384 );
#else
(void) ciphersuite_id;
#endif
return( tls_prf_sha256 );
#else /* MBEDTLS_SSL_PROTO_TLS1_2 */
(void) ciphersuite_id;
return( NULL );
#endif /* !MBEDTLS_SSL_PROTO_TLS1_2 */
}
/* /*
* Deserialize context, see mbedtls_ssl_context_save() for format. * Deserialize context, see mbedtls_ssl_context_save() for format.
* *
@@ -7966,6 +7938,25 @@ exit:
return( ret ); return( ret );
} }
#if defined(MBEDTLS_SSL_CONTEXT_SERIALIZATION)
/*
* Helper to get TLS 1.2 PRF from ciphersuite
* (Duplicates bits of logic from ssl_set_handshake_prfs().)
*/
static tls_prf_fn ssl_tls12prf_from_cs( int ciphersuite_id )
{
#if defined(MBEDTLS_SHA384_C)
const mbedtls_ssl_ciphersuite_t * const ciphersuite_info =
mbedtls_ssl_ciphersuite_from_id( ciphersuite_id );
if( ciphersuite_info->mac == MBEDTLS_MD_SHA384 )
return( tls_prf_sha384 );
#else
(void) ciphersuite_id;
#endif
return( tls_prf_sha256 );
}
#endif /* MBEDTLS_SSL_CONTEXT_SERIALIZATION */
#endif /* MBEDTLS_SSL_PROTO_TLS1_2 */ #endif /* MBEDTLS_SSL_PROTO_TLS1_2 */
#endif /* MBEDTLS_SSL_TLS_C */ #endif /* MBEDTLS_SSL_TLS_C */