iPXE
sha512_224.c
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00001 /*
00002  * Copyright (C) 2015 Michael Brown <mbrown@fensystems.co.uk>.
00003  *
00004  * This program is free software; you can redistribute it and/or
00005  * modify it under the terms of the GNU General Public License as
00006  * published by the Free Software Foundation; either version 2 of the
00007  * License, or any later version.
00008  *
00009  * This program is distributed in the hope that it will be useful, but
00010  * WITHOUT ANY WARRANTY; without even the implied warranty of
00011  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012  * General Public License for more details.
00013  *
00014  * You should have received a copy of the GNU General Public License
00015  * along with this program; if not, write to the Free Software
00016  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
00017  * 02110-1301, USA.
00018  *
00019  * You can also choose to distribute this program under the terms of
00020  * the Unmodified Binary Distribution Licence (as given in the file
00021  * COPYING.UBDL), provided that you have satisfied its requirements.
00022  */
00023 
00024 FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
00025 
00026 /** @file
00027  *
00028  * SHA-512/224 algorithm
00029  *
00030  */
00031 
00032 #include <stdint.h>
00033 #include <byteswap.h>
00034 #include <ipxe/crypto.h>
00035 #include <ipxe/asn1.h>
00036 #include <ipxe/sha512.h>
00037 
00038 /** SHA-512/224 initial digest values */
00039 static const struct sha512_digest sha512_224_init_digest = {
00040         .h = {
00041                 cpu_to_be64 ( 0x8c3d37c819544da2ULL ),
00042                 cpu_to_be64 ( 0x73e1996689dcd4d6ULL ),
00043                 cpu_to_be64 ( 0x1dfab7ae32ff9c82ULL ),
00044                 cpu_to_be64 ( 0x679dd514582f9fcfULL ),
00045                 cpu_to_be64 ( 0x0f6d2b697bd44da8ULL ),
00046                 cpu_to_be64 ( 0x77e36f7304c48942ULL ),
00047                 cpu_to_be64 ( 0x3f9d85a86a1d36c8ULL ),
00048                 cpu_to_be64 ( 0x1112e6ad91d692a1ULL ),
00049         },
00050 };
00051 
00052 /**
00053  * Initialise SHA-512/224 algorithm
00054  *
00055  * @v ctx               SHA-512/224 context
00056  */
00057 static void sha512_224_init ( void *ctx ) {
00058         struct sha512_context *context = ctx;
00059 
00060         sha512_family_init ( context, &sha512_224_init_digest,
00061                              SHA512_224_DIGEST_SIZE );
00062 }
00063 
00064 /** SHA-512/224 algorithm */
00065 struct digest_algorithm sha512_224_algorithm = {
00066         .name           = "sha512/224",
00067         .ctxsize        = sizeof ( struct sha512_context ),
00068         .blocksize      = sizeof ( union sha512_block ),
00069         .digestsize     = SHA512_224_DIGEST_SIZE,
00070         .init           = sha512_224_init,
00071         .update         = sha512_update,
00072         .final          = sha512_final,
00073 };
00074 
00075 /** "sha512_224" object identifier */
00076 static uint8_t oid_sha512_224[] = { ASN1_OID_SHA512_224 };
00077 
00078 /** "sha512_224" OID-identified algorithm */
00079 struct asn1_algorithm oid_sha512_224_algorithm __asn1_algorithm = {
00080         .name = "sha512/224",
00081         .digest = &sha512_224_algorithm,
00082         .oid = ASN1_OID_CURSOR ( oid_sha512_224 ),
00083 };