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Don't special-case NULL cipher in ssl_tls.c

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Manuel Pégourié-Gonnard 2013-10-25 18:42:44 +02:00
parent 126a66f668
commit 8866591cc5
1 changed files with 43 additions and 60 deletions
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103
library/ssl_tls.c
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@ -633,57 +633,54 @@ int ssl_derive_keys( ssl_context *ssl )
} }
#endif #endif
if( cipher_info->type != POLARSSL_CIPHER_NULL ) if( ( ret = cipher_init_ctx( &transform->cipher_ctx_enc,
cipher_info ) ) != 0 )
{ {
if( ( ret = cipher_init_ctx( &transform->cipher_ctx_enc, SSL_DEBUG_RET( 1, "cipher_init_ctx", ret );
cipher_info ) ) != 0 ) return( ret );
{ }
SSL_DEBUG_RET( 1, "cipher_init_ctx", ret );
return( ret );
}
if( ( ret = cipher_init_ctx( &transform->cipher_ctx_dec, if( ( ret = cipher_init_ctx( &transform->cipher_ctx_dec,
cipher_info ) ) != 0 ) cipher_info ) ) != 0 )
{ {
SSL_DEBUG_RET( 1, "cipher_init_ctx", ret ); SSL_DEBUG_RET( 1, "cipher_init_ctx", ret );
return( ret ); return( ret );
} }
if( ( ret = cipher_setkey( &transform->cipher_ctx_enc, key1, if( ( ret = cipher_setkey( &transform->cipher_ctx_enc, key1,
cipher_info->key_length, cipher_info->key_length,
POLARSSL_ENCRYPT ) ) != 0 ) POLARSSL_ENCRYPT ) ) != 0 )
{ {
SSL_DEBUG_RET( 1, "cipher_setkey", ret ); SSL_DEBUG_RET( 1, "cipher_setkey", ret );
return( ret ); return( ret );
} }
if( ( ret = cipher_setkey( &transform->cipher_ctx_dec, key2, if( ( ret = cipher_setkey( &transform->cipher_ctx_dec, key2,
cipher_info->key_length, cipher_info->key_length,
POLARSSL_DECRYPT ) ) != 0 ) POLARSSL_DECRYPT ) ) != 0 )
{ {
SSL_DEBUG_RET( 1, "cipher_setkey", ret ); SSL_DEBUG_RET( 1, "cipher_setkey", ret );
return( ret ); return( ret );
} }
#if defined(POLARSSL_CIPHER_MODE_CBC) #if defined(POLARSSL_CIPHER_MODE_CBC)
if( cipher_info->mode == POLARSSL_MODE_CBC ) if( cipher_info->mode == POLARSSL_MODE_CBC )
{
if( ( ret = cipher_set_padding_mode( &transform->cipher_ctx_enc,
POLARSSL_PADDING_NONE ) ) != 0 )
{ {
if( ( ret = cipher_set_padding_mode( &transform->cipher_ctx_enc, SSL_DEBUG_RET( 1, "cipher_set_padding_mode", ret );
POLARSSL_PADDING_NONE ) ) != 0 ) return( ret );
{ }
SSL_DEBUG_RET( 1, "cipher_set_padding_mode", ret );
return( ret ); if( ( ret = cipher_set_padding_mode( &transform->cipher_ctx_dec,
} POLARSSL_PADDING_NONE ) ) != 0 )
{
if( ( ret = cipher_set_padding_mode( &transform->cipher_ctx_dec, SSL_DEBUG_RET( 1, "cipher_set_padding_mode", ret );
POLARSSL_PADDING_NONE ) ) != 0 ) return( ret );
{
SSL_DEBUG_RET( 1, "cipher_set_padding_mode", ret );
return( ret );
}
} }
#endif /* POLARSSL_CIPHER_MODE_CBC */
} }
#endif /* POLARSSL_CIPHER_MODE_CBC */
memset( keyblk, 0, sizeof( keyblk ) ); memset( keyblk, 0, sizeof( keyblk ) );
@ -1011,14 +1008,7 @@ static int ssl_encrypt_buf( ssl_context *ssl )
ssl->out_msglen += ssl->transform_out->maclen; ssl->out_msglen += ssl->transform_out->maclen;
#if defined(POLARSSL_CIPHER_NULL_CIPHER) #if defined(POLARSSL_ARC4_C) || defined(POLARSSL_CIPHER_NULL_CIPHER)
if( ssl->transform_out->ciphersuite_info->cipher == POLARSSL_CIPHER_NULL )
{
; /* Nothing to do */
}
else
#endif /* POLARSSL_CIPHER_NULL_CIPHER */
#if defined(POLARSSL_ARC4_C)
if( ssl->transform_out->cipher_ctx_enc.cipher_info->mode == if( ssl->transform_out->cipher_ctx_enc.cipher_info->mode ==
POLARSSL_MODE_STREAM ) POLARSSL_MODE_STREAM )
{ {
@ -1078,7 +1068,7 @@ static int ssl_encrypt_buf( ssl_context *ssl )
} }
} }
else else
#endif /* POLARSSL_ARC4_C */ #endif /* POLARSSL_ARC4_C || POLARSSL_CIPHER_NULL_CIPHER */
#if defined(POLARSSL_GCM_C) #if defined(POLARSSL_GCM_C)
if( ssl->transform_out->cipher_ctx_enc.cipher_info->mode == if( ssl->transform_out->cipher_ctx_enc.cipher_info->mode ==
POLARSSL_MODE_GCM ) POLARSSL_MODE_GCM )
@ -1324,14 +1314,7 @@ static int ssl_decrypt_buf( ssl_context *ssl )
return( POLARSSL_ERR_SSL_INVALID_MAC ); return( POLARSSL_ERR_SSL_INVALID_MAC );
} }
#if defined(POLARSSL_CIPHER_NULL_CIPHER) #if defined(POLARSSL_ARC4_C) || defined(POLARSSL_CIPHER_NULL_CIPHER)
if( ssl->transform_in->ciphersuite_info->cipher == POLARSSL_CIPHER_NULL )
{
padlen = 0;
}
else
#endif /* POLARSSL_CIPHER_NULL_CIPHER */
#if defined(POLARSSL_ARC4_C)
if( ssl->transform_in->cipher_ctx_dec.cipher_info->mode == if( ssl->transform_in->cipher_ctx_dec.cipher_info->mode ==
POLARSSL_MODE_STREAM ) POLARSSL_MODE_STREAM )
{ {
@ -1384,7 +1367,7 @@ static int ssl_decrypt_buf( ssl_context *ssl )
} }
} }
else else
#endif /* POLARSSL_ARC4_C */ #endif /* POLARSSL_ARC4_C || POLARSSL_CIPHER_NULL_CIPHER */
#if defined(POLARSSL_GCM_C) #if defined(POLARSSL_GCM_C)
if( ssl->transform_in->cipher_ctx_dec.cipher_info->mode == if( ssl->transform_in->cipher_ctx_dec.cipher_info->mode ==
POLARSSL_MODE_GCM ) POLARSSL_MODE_GCM )