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