83 lines
2.3 KiB
C
83 lines
2.3 KiB
C
/*
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* Copyright (C) 2015 Michael Brown <mbrown@fensystems.co.uk>.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*
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* You can also choose to distribute this program under the terms of
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* the Unmodified Binary Distribution Licence (as given in the file
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* COPYING.UBDL), provided that you have satisfied its requirements.
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*/
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FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
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/** @file
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*
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* SHA-224 algorithm
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*
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*/
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#include <stdint.h>
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#include <byteswap.h>
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#include <ipxe/crypto.h>
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#include <ipxe/asn1.h>
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#include <ipxe/sha256.h>
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/** SHA-224 initial digest values */
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static const struct sha256_digest sha224_init_digest = {
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.h = {
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cpu_to_be32 ( 0xc1059ed8 ),
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cpu_to_be32 ( 0x367cd507 ),
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cpu_to_be32 ( 0x3070dd17 ),
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cpu_to_be32 ( 0xf70e5939 ),
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cpu_to_be32 ( 0xffc00b31 ),
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cpu_to_be32 ( 0x68581511 ),
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cpu_to_be32 ( 0x64f98fa7 ),
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cpu_to_be32 ( 0xbefa4fa4 ),
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},
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};
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/**
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* Initialise SHA-224 algorithm
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*
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* @v ctx SHA-224 context
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*/
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static void sha224_init ( void *ctx ) {
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struct sha256_context *context = ctx;
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sha256_family_init ( context, &sha224_init_digest, SHA224_DIGEST_SIZE );
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}
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/** SHA-224 algorithm */
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struct digest_algorithm sha224_algorithm = {
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.name = "sha224",
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.ctxsize = sizeof ( struct sha256_context ),
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.blocksize = sizeof ( union sha256_block ),
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.digestsize = SHA224_DIGEST_SIZE,
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.init = sha224_init,
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.update = sha256_update,
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.final = sha256_final,
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};
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/** "sha224" object identifier */
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static uint8_t oid_sha224[] = { ASN1_OID_SHA224 };
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/** "sha224" OID-identified algorithm */
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struct asn1_algorithm oid_sha224_algorithm __asn1_algorithm = {
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.name = "sha224",
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.digest = &sha224_algorithm,
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.oid = ASN1_OID_CURSOR ( oid_sha224 ),
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};
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