56 lines
1.3 KiB
C
56 lines
1.3 KiB
C
/*
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* Copyright (c) 2015-2017, ARM Limited and Contributors. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <openssl/sha.h>
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#include <stdio.h>
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#include "debug.h"
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#include "key.h"
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#define BUFFER_SIZE 256
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int sha_file(int md_alg, const char *filename, unsigned char *md)
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{
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FILE *inFile;
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SHA256_CTX shaContext;
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SHA512_CTX sha512Context;
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int bytes;
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unsigned char data[BUFFER_SIZE];
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if ((filename == NULL) || (md == NULL)) {
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ERROR("%s(): NULL argument\n", __FUNCTION__);
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return 0;
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}
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inFile = fopen(filename, "rb");
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if (inFile == NULL) {
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ERROR("Cannot read %s\n", filename);
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return 0;
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}
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if (md_alg == HASH_ALG_SHA384) {
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SHA384_Init(&sha512Context);
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while ((bytes = fread(data, 1, BUFFER_SIZE, inFile)) != 0) {
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SHA384_Update(&sha512Context, data, bytes);
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}
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SHA384_Final(md, &sha512Context);
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} else if (md_alg == HASH_ALG_SHA512) {
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SHA512_Init(&sha512Context);
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while ((bytes = fread(data, 1, BUFFER_SIZE, inFile)) != 0) {
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SHA512_Update(&sha512Context, data, bytes);
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}
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SHA512_Final(md, &sha512Context);
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} else {
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SHA256_Init(&shaContext);
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while ((bytes = fread(data, 1, BUFFER_SIZE, inFile)) != 0) {
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SHA256_Update(&shaContext, data, bytes);
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}
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SHA256_Final(md, &shaContext);
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}
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fclose(inFile);
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return 1;
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}
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