1 /* 2 * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #include <openssl/sha.h> 8 #include <stdio.h> 9 10 #include "debug.h" 11 12 #define BUFFER_SIZE 256 13 14 int sha_file(const char *filename, unsigned char *md) 15 { 16 FILE *inFile; 17 SHA256_CTX shaContext; 18 int bytes; 19 unsigned char data[BUFFER_SIZE]; 20 21 if ((filename == NULL) || (md == NULL)) { 22 ERROR("%s(): NULL argument\n", __FUNCTION__); 23 return 0; 24 } 25 26 inFile = fopen(filename, "rb"); 27 if (inFile == NULL) { 28 ERROR("Cannot read %s\n", filename); 29 return 0; 30 } 31 32 SHA256_Init(&shaContext); 33 while ((bytes = fread(data, 1, BUFFER_SIZE, inFile)) != 0) { 34 SHA256_Update(&shaContext, data, bytes); 35 } 36 SHA256_Final(md, &shaContext); 37 38 fclose(inFile); 39 return 1; 40 } 41
