1 /* Copyright © 2007 Carl Worth
2 * Copyright © 2009 Jeremy Huddleston, Julien Cristau, and Matthieu Herrb
3 * Copyright © 2009-2010 Mikhail Gusarov
4 * Copyright © 2012 Yaakov Selkowitz and Keith Packard
5 * Copyright © 2014 Intel Corporation
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the next
15 * paragraph) shall be included in all copies or substantial portions of the
16 * Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
23 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
24 * DEALINGS IN THE SOFTWARE.
25 */
26
27 #include "sha1/sha1.h"
28 #include "mesa-sha1.h"
29 #include <string.h>
30
31 void
_mesa_sha1_compute(const void * data,size_t size,unsigned char result[20])32 _mesa_sha1_compute(const void *data, size_t size, unsigned char result[20])
33 {
34 struct mesa_sha1 ctx;
35
36 _mesa_sha1_init(&ctx);
37 _mesa_sha1_update(&ctx, data, size);
38 _mesa_sha1_final(&ctx, result);
39 }
40
41 void
_mesa_sha1_format(char * buf,const unsigned char * sha1)42 _mesa_sha1_format(char *buf, const unsigned char *sha1)
43 {
44 static const char hex_digits[] = "0123456789abcdef";
45 int i;
46
47 for (i = 0; i < 40; i += 2) {
48 buf[i] = hex_digits[sha1[i >> 1] >> 4];
49 buf[i + 1] = hex_digits[sha1[i >> 1] & 0x0f];
50 }
51 buf[i] = '\0';
52 }
53
54 /* Convert a hashs string hexidecimal representation into its more compact
55 * form.
56 */
57 void
_mesa_sha1_hex_to_sha1(unsigned char * buf,const char * hex)58 _mesa_sha1_hex_to_sha1(unsigned char *buf, const char *hex)
59 {
60 for (unsigned i = 0; i < 20; i++) {
61 char tmp[3];
62 tmp[0] = hex[i * 2];
63 tmp[1] = hex[(i * 2) + 1];
64 tmp[2] = '\0';
65 buf[i] = strtol(tmp, NULL, 16);
66 }
67 }
68
69 static void
sha1_to_uint32(const uint8_t sha1[SHA1_DIGEST_LENGTH],uint32_t out[SHA1_DIGEST_LENGTH32])70 sha1_to_uint32(const uint8_t sha1[SHA1_DIGEST_LENGTH],
71 uint32_t out[SHA1_DIGEST_LENGTH32])
72 {
73 memset(out, 0, SHA1_DIGEST_LENGTH);
74
75 for (unsigned i = 0; i < SHA1_DIGEST_LENGTH; i++)
76 out[i / 4] |= (uint32_t)sha1[i] << ((i % 4) * 8);
77 }
78
79 void
_mesa_sha1_print(FILE * f,const uint8_t sha1[SHA1_DIGEST_LENGTH])80 _mesa_sha1_print(FILE *f, const uint8_t sha1[SHA1_DIGEST_LENGTH])
81 {
82 uint32_t u32[SHA1_DIGEST_LENGTH];
83 sha1_to_uint32(sha1, u32);
84
85 for (unsigned i = 0; i < SHA1_DIGEST_LENGTH32; i++) {
86 fprintf(f, "0x%08x", u32[i]);
87 if (i < SHA1_DIGEST_LENGTH32 - 1)
88 fprintf(f, ", ");
89 }
90 }
91
92 bool
_mesa_printed_sha1_equal(const uint8_t sha1[SHA1_DIGEST_LENGTH],const uint32_t printed_sha1[SHA1_DIGEST_LENGTH32])93 _mesa_printed_sha1_equal(const uint8_t sha1[SHA1_DIGEST_LENGTH],
94 const uint32_t printed_sha1[SHA1_DIGEST_LENGTH32])
95 {
96 uint32_t u32[SHA1_DIGEST_LENGTH32];
97 sha1_to_uint32(sha1, u32);
98
99 return memcmp(u32, printed_sha1, sizeof(u32)) == 0;
100 }
101