mirror of https://github.com/thesofproject/sof.git
73 lines
1.8 KiB
C
73 lines
1.8 KiB
C
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/*
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* Copyright (c) 2017, Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* Author: Liam Girdwood <liam.r.girdwood@linux.intel.com>
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* Keyon Jie <yang.jie@linux.intel.com>
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <errno.h>
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#include <string.h>
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#include <time.h>
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#include <sys/time.h>
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#include <openssl/conf.h>
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#include <openssl/evp.h>
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#include <openssl/err.h>
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#include "rimage.h"
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#include "file_format.h"
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#include "manifest.h"
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#define DEBUG_HASH 0
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void module_sha256_create(struct image *image)
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{
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image->md = EVP_sha256();
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image->mdctx = EVP_MD_CTX_create();
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EVP_DigestInit_ex(image->mdctx, image->md, NULL);
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}
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void module_sha256_update(struct image *image, uint8_t *data, size_t bytes)
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{
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EVP_DigestUpdate(image->mdctx, data, bytes);
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}
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void module_sha256_complete(struct image *image, uint8_t *hash)
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{
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unsigned char md_value[EVP_MAX_MD_SIZE];
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unsigned int md_len;
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#if DEBUG_HASH
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int i;
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#endif
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EVP_DigestFinal_ex(image->mdctx, md_value, &md_len);
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EVP_MD_CTX_destroy(image->mdctx);
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memcpy(hash, md_value, md_len);
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#if DEBUG_HASH
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fprintf(stdout, "Module digest is: ");
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for (i = 0; i < md_len; i++)
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fprintf(stdout, "%02x", md_value[i]);
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fprintf(stdout, "\n");
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#endif
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}
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void ri_hash(struct image *image, unsigned int offset, unsigned int size, uint8_t *hash)
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{
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module_sha256_create(image);
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module_sha256_update(image, image->fw_image + offset, size);
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module_sha256_complete(image, hash);
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}
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