[video_subr] Use memmove() for overlapping memory copy
[ipxe.git] / src / crypto / sha224.c
1 /*
2 * Copyright (C) 2015 Michael Brown <mbrown@fensystems.co.uk>.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License as
6 * published by the Free Software Foundation; either version 2 of the
7 * License, or any later version.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
17 * 02110-1301, USA.
18 *
19 * You can also choose to distribute this program under the terms of
20 * the Unmodified Binary Distribution Licence (as given in the file
21 * COPYING.UBDL), provided that you have satisfied its requirements.
22 */
23
24 FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
25
26 /** @file
27 *
28 * SHA-224 algorithm
29 *
30 */
31
32 #include <stdint.h>
33 #include <byteswap.h>
34 #include <ipxe/crypto.h>
35 #include <ipxe/asn1.h>
36 #include <ipxe/sha256.h>
37
38 /** SHA-224 initial digest values */
39 static const struct sha256_digest sha224_init_digest = {
40 .h = {
41 cpu_to_be32 ( 0xc1059ed8 ),
42 cpu_to_be32 ( 0x367cd507 ),
43 cpu_to_be32 ( 0x3070dd17 ),
44 cpu_to_be32 ( 0xf70e5939 ),
45 cpu_to_be32 ( 0xffc00b31 ),
46 cpu_to_be32 ( 0x68581511 ),
47 cpu_to_be32 ( 0x64f98fa7 ),
48 cpu_to_be32 ( 0xbefa4fa4 ),
49 },
50 };
51
52 /**
53 * Initialise SHA-224 algorithm
54 *
55 * @v ctx SHA-224 context
56 */
57 static void sha224_init ( void *ctx ) {
58 struct sha256_context *context = ctx;
59
60 sha256_family_init ( context, &sha224_init_digest, SHA224_DIGEST_SIZE );
61 }
62
63 /** SHA-224 algorithm */
64 struct digest_algorithm sha224_algorithm = {
65 .name = "sha224",
66 .ctxsize = sizeof ( struct sha256_context ),
67 .blocksize = sizeof ( union sha256_block ),
68 .digestsize = SHA224_DIGEST_SIZE,
69 .init = sha224_init,
70 .update = sha256_update,
71 .final = sha256_final,
72 };
73
74 /** "sha224" object identifier */
75 static uint8_t oid_sha224[] = { ASN1_OID_SHA224 };
76
77 /** "sha224" OID-identified algorithm */
78 struct asn1_algorithm oid_sha224_algorithm __asn1_algorithm = {
79 .name = "sha224",
80 .digest = &sha224_algorithm,
81 .oid = ASN1_OID_CURSOR ( oid_sha224 ),
82 };