diff options
Diffstat (limited to 'thirdparty/mbedtls/library/aes.c')
| -rw-r--r-- | thirdparty/mbedtls/library/aes.c | 48 |
1 files changed, 38 insertions, 10 deletions
diff --git a/thirdparty/mbedtls/library/aes.c b/thirdparty/mbedtls/library/aes.c index da0e5b6bdc..af19a3849f 100644 --- a/thirdparty/mbedtls/library/aes.c +++ b/thirdparty/mbedtls/library/aes.c @@ -1082,6 +1082,7 @@ int mbedtls_aes_crypt_cbc( mbedtls_aes_context *ctx, unsigned char *output ) { int i; + int ret; unsigned char temp[16]; AES_VALIDATE_RET( ctx != NULL ); @@ -1111,7 +1112,9 @@ int mbedtls_aes_crypt_cbc( mbedtls_aes_context *ctx, while( length > 0 ) { memcpy( temp, input, 16 ); - mbedtls_aes_crypt_ecb( ctx, mode, input, output ); + ret = mbedtls_aes_crypt_ecb( ctx, mode, input, output ); + if( ret != 0 ) + goto exit; for( i = 0; i < 16; i++ ) output[i] = (unsigned char)( output[i] ^ iv[i] ); @@ -1130,7 +1133,9 @@ int mbedtls_aes_crypt_cbc( mbedtls_aes_context *ctx, for( i = 0; i < 16; i++ ) output[i] = (unsigned char)( input[i] ^ iv[i] ); - mbedtls_aes_crypt_ecb( ctx, mode, output, output ); + ret = mbedtls_aes_crypt_ecb( ctx, mode, output, output ); + if( ret != 0 ) + goto exit; memcpy( iv, output, 16 ); input += 16; @@ -1138,8 +1143,10 @@ int mbedtls_aes_crypt_cbc( mbedtls_aes_context *ctx, length -= 16; } } + ret = 0; - return( 0 ); +exit: + return( ret ); } #endif /* MBEDTLS_CIPHER_MODE_CBC */ @@ -1322,6 +1329,7 @@ int mbedtls_aes_crypt_cfb128( mbedtls_aes_context *ctx, unsigned char *output ) { int c; + int ret; size_t n; AES_VALIDATE_RET( ctx != NULL ); @@ -1342,7 +1350,11 @@ int mbedtls_aes_crypt_cfb128( mbedtls_aes_context *ctx, while( length-- ) { if( n == 0 ) - mbedtls_aes_crypt_ecb( ctx, MBEDTLS_AES_ENCRYPT, iv, iv ); + { + ret = mbedtls_aes_crypt_ecb( ctx, MBEDTLS_AES_ENCRYPT, iv, iv ); + if( ret != 0 ) + goto exit; + } c = *input++; *output++ = (unsigned char)( c ^ iv[n] ); @@ -1356,7 +1368,11 @@ int mbedtls_aes_crypt_cfb128( mbedtls_aes_context *ctx, while( length-- ) { if( n == 0 ) - mbedtls_aes_crypt_ecb( ctx, MBEDTLS_AES_ENCRYPT, iv, iv ); + { + ret = mbedtls_aes_crypt_ecb( ctx, MBEDTLS_AES_ENCRYPT, iv, iv ); + if( ret != 0 ) + goto exit; + } iv[n] = *output++ = (unsigned char)( iv[n] ^ *input++ ); @@ -1365,8 +1381,10 @@ int mbedtls_aes_crypt_cfb128( mbedtls_aes_context *ctx, } *iv_off = n; + ret = 0; - return( 0 ); +exit: + return( ret ); } /* @@ -1379,6 +1397,7 @@ int mbedtls_aes_crypt_cfb8( mbedtls_aes_context *ctx, const unsigned char *input, unsigned char *output ) { + int ret; unsigned char c; unsigned char ov[17]; @@ -1391,7 +1410,9 @@ int mbedtls_aes_crypt_cfb8( mbedtls_aes_context *ctx, while( length-- ) { memcpy( ov, iv, 16 ); - mbedtls_aes_crypt_ecb( ctx, MBEDTLS_AES_ENCRYPT, iv, iv ); + ret = mbedtls_aes_crypt_ecb( ctx, MBEDTLS_AES_ENCRYPT, iv, iv ); + if( ret != 0 ) + goto exit; if( mode == MBEDTLS_AES_DECRYPT ) ov[16] = *input; @@ -1403,8 +1424,10 @@ int mbedtls_aes_crypt_cfb8( mbedtls_aes_context *ctx, memcpy( iv, ov + 1, 16 ); } + ret = 0; - return( 0 ); +exit: + return( ret ); } #endif /* MBEDTLS_CIPHER_MODE_CFB */ @@ -1466,6 +1489,7 @@ int mbedtls_aes_crypt_ctr( mbedtls_aes_context *ctx, unsigned char *output ) { int c, i; + int ret; size_t n; AES_VALIDATE_RET( ctx != NULL ); @@ -1483,7 +1507,9 @@ int mbedtls_aes_crypt_ctr( mbedtls_aes_context *ctx, while( length-- ) { if( n == 0 ) { - mbedtls_aes_crypt_ecb( ctx, MBEDTLS_AES_ENCRYPT, nonce_counter, stream_block ); + ret = mbedtls_aes_crypt_ecb( ctx, MBEDTLS_AES_ENCRYPT, nonce_counter, stream_block ); + if( ret != 0 ) + goto exit; for( i = 16; i > 0; i-- ) if( ++nonce_counter[i - 1] != 0 ) @@ -1496,8 +1522,10 @@ int mbedtls_aes_crypt_ctr( mbedtls_aes_context *ctx, } *nc_off = n; + ret = 0; - return( 0 ); +exit: + return( ret ); } #endif /* MBEDTLS_CIPHER_MODE_CTR */ |