1 /* 2 * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are met: 6 * 7 * Redistributions of source code must retain the above copyright notice, this 8 * list of conditions and the following disclaimer. 9 * 10 * Redistributions in binary form must reproduce the above copyright notice, 11 * this list of conditions and the following disclaimer in the documentation 12 * and/or other materials provided with the distribution. 13 * 14 * Neither the name of ARM nor the names of its contributors may be used 15 * to endorse or promote products derived from this software without specific 16 * prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #include <stdio.h> 32 #include <openssl/sha.h> 33 34 #include "debug.h" 35 36 #define BUFFER_SIZE 256 37 38 int sha_file(const char *filename, unsigned char *md) 39 { 40 FILE *inFile; 41 SHA256_CTX shaContext; 42 int bytes; 43 unsigned char data[BUFFER_SIZE]; 44 45 if ((filename == NULL) || (md == NULL)) { 46 ERROR("%s(): NULL argument\n", __FUNCTION__); 47 return 0; 48 } 49 50 inFile = fopen(filename, "rb"); 51 if (inFile == NULL) { 52 ERROR("Cannot read %s\n", filename); 53 return 0; 54 } 55 56 SHA256_Init(&shaContext); 57 while ((bytes = fread(data, 1, BUFFER_SIZE, inFile)) != 0) { 58 SHA256_Update(&shaContext, data, bytes); 59 } 60 SHA256_Final(md, &shaContext); 61 62 fclose(inFile); 63 return 1; 64 } 65
