src/crypto/sha512_224.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-512/224 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/sha512.h>
  37
  38 /** SHA-512/224 initial digest values */
  39 static const struct sha512_digest sha512_224_init_digest = {
  40         .h = {
  41                 cpu_to_be64 ( 0x8c3d37c819544da2ULL ),
  42                 cpu_to_be64 ( 0x73e1996689dcd4d6ULL ),
  43                 cpu_to_be64 ( 0x1dfab7ae32ff9c82ULL ),
  44                 cpu_to_be64 ( 0x679dd514582f9fcfULL ),
  45                 cpu_to_be64 ( 0x0f6d2b697bd44da8ULL ),
  46                 cpu_to_be64 ( 0x77e36f7304c48942ULL ),
  47                 cpu_to_be64 ( 0x3f9d85a86a1d36c8ULL ),
  48                 cpu_to_be64 ( 0x1112e6ad91d692a1ULL ),
  49         },
  50 };
  51
  52 /**
  53  * Initialise SHA-512/224 algorithm
  54  *
  55  * @v ctx               SHA-512/224 context
  56  */
  57 static void sha512_224_init ( void *ctx ) {
  58         struct sha512_context *context = ctx;
  59
  60         sha512_family_init ( context, &sha512_224_init_digest,
  61                              SHA512_224_DIGEST_SIZE );
  62 }
  63
  64 /** SHA-512/224 algorithm */
  65 struct digest_algorithm sha512_224_algorithm = {
  66         .name           = "sha512/224",
  67         .ctxsize        = sizeof ( struct sha512_context ),
  68         .blocksize      = sizeof ( union sha512_block ),
  69         .digestsize     = SHA512_224_DIGEST_SIZE,
  70         .init           = sha512_224_init,
  71         .update         = sha512_update,
  72         .final          = sha512_final,
  73 };
  74
  75 /** "sha512_224" object identifier */
  76 static uint8_t oid_sha512_224[] = { ASN1_OID_SHA512_224 };
  77
  78 /** "sha512_224" OID-identified algorithm */
  79 struct asn1_algorithm oid_sha512_224_algorithm __asn1_algorithm = {
  80         .name = "sha512/224",
  81         .digest = &sha512_224_algorithm,
  82         .oid = ASN1_OID_CURSOR ( oid_sha512_224 ),
  83 };