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
sha_file(const char * filename,unsigned char * md)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