2 * Copyright (C) 2015 Michael Brown <mbrown@fensystems.co.uk>.
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.
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.
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
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.
24 FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL
);
34 #include <ipxe/crypto.h>
35 #include <ipxe/sha256.h>
37 /** SHA-224 initial digest values */
38 static const struct sha256_digest sha224_init_digest
= {
40 cpu_to_be32 ( 0xc1059ed8 ),
41 cpu_to_be32 ( 0x367cd507 ),
42 cpu_to_be32 ( 0x3070dd17 ),
43 cpu_to_be32 ( 0xf70e5939 ),
44 cpu_to_be32 ( 0xffc00b31 ),
45 cpu_to_be32 ( 0x68581511 ),
46 cpu_to_be32 ( 0x64f98fa7 ),
47 cpu_to_be32 ( 0xbefa4fa4 ),
52 * Initialise SHA-224 algorithm
54 * @v ctx SHA-224 context
56 static void sha224_init ( void *ctx
) {
57 struct sha256_context
*context
= ctx
;
59 sha256_family_init ( context
, &sha224_init_digest
, SHA224_DIGEST_SIZE
);
62 /** SHA-224 algorithm */
63 struct digest_algorithm sha224_algorithm
= {
65 .ctxsize
= sizeof ( struct sha256_context
),
66 .blocksize
= sizeof ( union sha256_block
),
67 .digestsize
= SHA224_DIGEST_SIZE
,
69 .update
= sha256_update
,
70 .final
= sha256_final
,