cs_hash.c

00001 // ----------------------------------------------------------------------------
00002 // Copyright 2016-2017 ARM Ltd.
00003 //  
00004 // Licensed under the Apache License, Version 2.0 (the "License");
00005 // you may not use this file except in compliance with the License.
00006 // You may obtain a copy of the License at
00007 //  
00008 //     http://www.apache.org/licenses/LICENSE-2.0
00009 //  
00010 // Unless required by applicable law or agreed to in writing, software
00011 // distributed under the License is distributed on an "AS IS" BASIS,
00012 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00013 // See the License for the specific language governing permissions and
00014 // limitations under the License.
00015 // ----------------------------------------------------------------------------
00016 
00017 #include "pv_error_handling.h"
00018 #include "cs_hash.h"
00019 #include "pal_Crypto.h"
00020 #include "cs_utils.h"
00021 
00022 kcm_status_e  cs_hash(cs_hash_mode_e mode, const uint8_t *data, size_t data_size, uint8_t *digest, size_t digest_size)
00023 {
00024     palStatus_t pal_status = PAL_SUCCESS;
00025 
00026     SA_PV_ERR_RECOVERABLE_RETURN_IF((data == NULL), KCM_STATUS_INVALID_PARAMETER, "Invalid data pointer");
00027     SA_PV_ERR_RECOVERABLE_RETURN_IF((digest == NULL), KCM_STATUS_INVALID_PARAMETER, "Invalid digest pointer");
00028   
00029     switch (mode) {
00030         case CS_SHA256:
00031             SA_PV_ERR_RECOVERABLE_RETURN_IF((digest_size != CS_SHA256_SIZE), KCM_STATUS_INVALID_PARAMETER, "Invalid digest size");
00032             pal_status = pal_sha256 (data, data_size, digest);
00033             break;
00034         default:
00035             SA_PV_ERR_RECOVERABLE_RETURN_IF((true), KCM_CRYPTO_STATUS_UNSUPPORTED_HASH_MODE, "Hash mode not supported");
00036     }
00037 
00038     return cs_error_handler(pal_status);
00039 }