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Resolve PR review comments

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Address review comments:
1. add `mbedtls_cipher_init()` after freeing context, in test code
2. style comments
3. set `ctx->iv_size = 0` in case `IV == NULL && iv_len == 0`
This commit is contained in:
Ron Eldor 2017-10-01 17:04:54 +03:00
parent cf330e8910
commit de881c0173
2 changed files with 6 additions and 2 deletions
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5
library/cipher.c
View file

@ -220,6 +220,9 @@ int mbedtls_cipher_set_iv( mbedtls_cipher_context_t *ctx,
else if( NULL == iv && iv_len != 0 )
return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
if( NULL == iv && iv_len == 0 )
ctx->iv_size = 0;
/* avoid buffer overflow in ctx->iv */
if( iv_len > MBEDTLS_MAX_IV_LENGTH )
return( MBEDTLS_ERR_CIPHER_FEATURE_UNAVAILABLE );
@ -234,7 +237,7 @@ int mbedtls_cipher_set_iv( mbedtls_cipher_context_t *ctx,
if( actual_iv_size > iv_len )
return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
}
if ( actual_iv_size )
if ( actual_iv_size != 0 )
{
memcpy( ctx->iv, iv, actual_iv_size );
ctx->iv_size = actual_iv_size;

3
tests/suites/test_suite_cipher.function
View file

@ -106,7 +106,7 @@ void cipher_special_behaviours( )
mbedtls_cipher_init( &ctx );
memset( input, 0, sizeof( input ) );
memset( output, 0, sizeof( output ) );
#if defined (MBEDTLS_CIPHER_MODE_CBC)
#if defined(MBEDTLS_CIPHER_MODE_CBC)
memset( iv, 0, sizeof( iv ) );
/* Check and get info structures */
@ -124,6 +124,7 @@ void cipher_special_behaviours( )
== MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
mbedtls_cipher_free( &ctx );
mbedtls_cipher_init( &ctx );
#endif /* MBEDTLS_CIPHER_MODE_CBC */
cipher_info = mbedtls_cipher_info_from_type( MBEDTLS_CIPHER_AES_128_ECB );
TEST_ASSERT( NULL != cipher_info );