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Return `MBEDTLS_ERR_CCM_AUTH_FAILED` where needed. 

On authentication decryption, when the driver returns the relevant error,
return `MBEDTLS_ERR_CCM_AUTH_FAILED`.
pull/8704/head
Ron Eldor 2018-11-15 17:21:58 +02:00
parent 4e7e0548d5
commit 1aaff0e389
1 changed files with 16 additions and 3 deletions
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19
features/cryptocell/FEATURE_CRYPTOCELL310/ccm_alt.c
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@ -130,10 +130,23 @@ int mbedtls_ccm_auth_decrypt( mbedtls_ccm_context *ctx, size_t length,
CrysRet = CRYS_AESCCM( SASI_AES_DECRYPT, ctx->cipher_key, ctx->keySize_ID,(uint8_t*)iv, iv_len,
(uint8_t*)add, add_len, (uint8_t*)input, length, output, tag_len, (uint8_t*)tag );
if ( CrysRet != CRYS_OK )
return ( MBEDTLS_ERR_PLATFORM_HW_ACCEL_FAILED );
if( CrysRet == CRYS_FATAL_ERROR )
{
/*
* Unfortunately, Crys AESCCM returns CRYS_FATAL_ERROR when
* MAC isn't as expected.
*/
ret = MBEDTLS_ERR_CCM_AUTH_FAILED;
goto exit;
}
else if ( CrysRet != CRYS_OK )
{
ret = MBEDTLS_ERR_PLATFORM_HW_ACCEL_FAILED;
goto exit;
}
return ( 0 );
exit:
return( ret );
}