From 02879299c96e02e0ad6093d86b04468ab89d3cfe Mon Sep 17 00:00:00 2001 From: Michael Brown Date: Sun, 12 Apr 2015 15:53:39 +0100 Subject: [crypto] Add SHA-384 algorithm SHA-384 is almost identical to SHA-512, with differing initial hash values and a truncated output length. This implementation has been verified using the NIST SHA-384 test vectors. Signed-off-by: Michael Brown --- src/crypto/sha384.c | 82 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 82 insertions(+) create mode 100644 src/crypto/sha384.c (limited to 'src/crypto') diff --git a/src/crypto/sha384.c b/src/crypto/sha384.c new file mode 100644 index 00000000..01775182 --- /dev/null +++ b/src/crypto/sha384.c @@ -0,0 +1,82 @@ +/* + * Copyright (C) 2015 Michael Brown . + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of the + * License, or any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA + * 02110-1301, USA. + * + * You can also choose to distribute this program under the terms of + * the Unmodified Binary Distribution Licence (as given in the file + * COPYING.UBDL), provided that you have satisfied its requirements. + */ + +FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); + +/** @file + * + * SHA-384 algorithm + * + */ + +#include +#include +#include +#include +#include + +/** SHA-384 initial digest values */ +static const struct sha512_digest sha384_init_digest = { + .h = { + cpu_to_be64 ( 0xcbbb9d5dc1059ed8ULL ), + cpu_to_be64 ( 0x629a292a367cd507ULL ), + cpu_to_be64 ( 0x9159015a3070dd17ULL ), + cpu_to_be64 ( 0x152fecd8f70e5939ULL ), + cpu_to_be64 ( 0x67332667ffc00b31ULL ), + cpu_to_be64 ( 0x8eb44a8768581511ULL ), + cpu_to_be64 ( 0xdb0c2e0d64f98fa7ULL ), + cpu_to_be64 ( 0x47b5481dbefa4fa4ULL ), + }, +}; + +/** + * Initialise SHA-384 algorithm + * + * @v ctx SHA-384 context + */ +static void sha384_init ( void *ctx ) { + struct sha512_context *context = ctx; + + sha512_family_init ( context, &sha384_init_digest, SHA384_DIGEST_SIZE ); +} + +/** SHA-384 algorithm */ +struct digest_algorithm sha384_algorithm = { + .name = "sha384", + .ctxsize = sizeof ( struct sha512_context ), + .blocksize = sizeof ( union sha512_block ), + .digestsize = SHA384_DIGEST_SIZE, + .init = sha384_init, + .update = sha512_update, + .final = sha512_final, +}; + +/** "sha384" object identifier */ +static uint8_t oid_sha384[] = { ASN1_OID_SHA384 }; + +/** "sha384" OID-identified algorithm */ +struct asn1_algorithm oid_sha384_algorithm __asn1_algorithm = { + .name = "sha384", + .digest = &sha384_algorithm, + .oid = ASN1_OID_CURSOR ( oid_sha384 ), +}; -- cgit v1.2.3-55-g7522