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88 lines
2.4 KiB
C
88 lines
2.4 KiB
C
/*
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* Copyright (C) 2021 HAW Hamburg
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup pkg_driver_cryptocell_310
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* @{
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*
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* @brief Common hash functions used by all PSA Crypto wrappers
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* for the CryptoCell 310 hash APIs.
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*
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* @author Lena Boeckmann <lena.boeckmann@haw-hamburg.de>
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*
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* @}
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*/
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#include "psa/crypto.h"
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#include "psa_error.h"
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#include "cryptocell_310_util.h"
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#include "crys_hash.h"
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#define ENABLE_DEBUG 0
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#include "debug.h"
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#define CC310_MAX_HASH_INPUT_BLOCK (0xFFF0)
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psa_status_t cryptocell_310_common_hash_setup(CRYS_HASHUserContext_t *ctx,
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CRYS_HASH_OperationMode_t mode)
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{
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CRYSError_t ret = CRYS_HASH_Init(ctx, mode);
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if (ret != CRYS_OK) {
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DEBUG("CRYS_HASH_Init failed with %s\n", cryptocell310_status_to_humanly_readable(ret));
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return CRYS_to_psa_error(ret);
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}
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return PSA_SUCCESS;
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}
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psa_status_t cryptocell_310_common_hash_update(CRYS_HASHUserContext_t *ctx,
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const uint8_t *input,
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size_t input_length)
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{
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CRYSError_t ret = 0;
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size_t offset = 0;
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size_t size;
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do {
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if (input_length > CC310_MAX_HASH_INPUT_BLOCK) {
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size = CC310_MAX_HASH_INPUT_BLOCK;
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input_length -= CC310_MAX_HASH_INPUT_BLOCK;
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}
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else {
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size = input_length;
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input_length = 0;
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}
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cryptocell_310_enable();
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ret = CRYS_HASH_Update(ctx, (uint8_t *)(input + offset), size);
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cryptocell_310_disable();
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offset += size;
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} while ((input_length > 0) && (ret == CRYS_OK));
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if (ret != CRYS_OK) {
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DEBUG("CRYS_HASH_Update failed with %s\n", cryptocell310_status_to_humanly_readable(ret));
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return CRYS_to_psa_error(ret);
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}
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return PSA_SUCCESS;
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}
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psa_status_t cryptocell_310_common_hash_finish(CRYS_HASHUserContext_t *ctx, uint8_t *hash, size_t hash_size,
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size_t *hash_length)
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{
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cryptocell_310_enable();
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CRYSError_t ret = CRYS_HASH_Finish(ctx, (uint32_t *)hash);
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cryptocell_310_disable();
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if (ret != CRYS_OK) {
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DEBUG("CRYS_HASH_Finish failed with %s\n", cryptocell310_status_to_humanly_readable(ret));
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return CRYS_to_psa_error(ret);
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}
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*hash_length = hash_size;
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return PSA_SUCCESS;
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}
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