[crypto] Add SHA-512/224 algorithm
SHA-512/224 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-512/224 test vectors. Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Michael Brown
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/*
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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-512/224 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/sha512.h>
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/** SHA-512/224 initial digest values */
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static const struct sha512_digest sha512_224_init_digest = {
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.h = {
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cpu_to_be64 ( 0x8c3d37c819544da2ULL ),
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cpu_to_be64 ( 0x73e1996689dcd4d6ULL ),
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cpu_to_be64 ( 0x1dfab7ae32ff9c82ULL ),
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cpu_to_be64 ( 0x679dd514582f9fcfULL ),
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cpu_to_be64 ( 0x0f6d2b697bd44da8ULL ),
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cpu_to_be64 ( 0x77e36f7304c48942ULL ),
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cpu_to_be64 ( 0x3f9d85a86a1d36c8ULL ),
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cpu_to_be64 ( 0x1112e6ad91d692a1ULL ),
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},
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};
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/**
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* Initialise SHA-512/224 algorithm
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*
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* @v ctx SHA-512/224 context
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*/
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static void sha512_224_init ( void *ctx ) {
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struct sha512_context *context = ctx;
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sha512_family_init ( context, &sha512_224_init_digest,
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SHA512_224_DIGEST_SIZE );
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}
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/** SHA-512/224 algorithm */
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struct digest_algorithm sha512_224_algorithm = {
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.name = "sha512/224",
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.ctxsize = sizeof ( struct sha512_context ),
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.blocksize = sizeof ( union sha512_block ),
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.digestsize = SHA512_224_DIGEST_SIZE,
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.init = sha512_224_init,
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.update = sha512_update,
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.final = sha512_final,
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};
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/** "sha512_224" object identifier */
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static uint8_t oid_sha512_224[] = { ASN1_OID_SHA512_224 };
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/** "sha512_224" OID-identified algorithm */
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struct asn1_algorithm oid_sha512_224_algorithm __asn1_algorithm = {
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.name = "sha512/224",
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.digest = &sha512_224_algorithm,
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.oid = ASN1_OID_CURSOR ( oid_sha512_224 ),
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};
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@ -181,6 +181,13 @@ struct asn1_builder_header {
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ASN1_OID_SINGLE ( 3 ), ASN1_OID_SINGLE ( 4 ), \
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ASN1_OID_SINGLE ( 2 ), ASN1_OID_SINGLE ( 4 )
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/** ASN.1 OID for id-sha512-224 (2.16.840.1.101.3.4.2.5) */
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#define ASN1_OID_SHA512_224 \
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ASN1_OID_INITIAL ( 2, 16 ), ASN1_OID_DOUBLE ( 840 ), \
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ASN1_OID_SINGLE ( 1 ), ASN1_OID_SINGLE ( 101 ), \
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ASN1_OID_SINGLE ( 3 ), ASN1_OID_SINGLE ( 4 ), \
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ASN1_OID_SINGLE ( 2 ), ASN1_OID_SINGLE ( 5 )
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/** ASN.1 OID for id-sha512-256 (2.16.840.1.101.3.4.2.6) */
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#define ASN1_OID_SHA512_256 \
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ASN1_OID_INITIAL ( 2, 16 ), ASN1_OID_DOUBLE ( 840 ), \
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@ -81,6 +81,9 @@ struct sha512_context {
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/** SHA-512/256 digest size */
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#define SHA512_256_DIGEST_SIZE ( SHA512_DIGEST_SIZE * 256 / 512 )
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/** SHA-512/224 digest size */
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#define SHA512_224_DIGEST_SIZE ( SHA512_DIGEST_SIZE * 224 / 512 )
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extern void sha512_family_init ( struct sha512_context *context,
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const struct sha512_digest *init,
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size_t digestsize );
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@ -90,5 +93,6 @@ extern void sha512_final ( void *ctx, void *out );
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extern struct digest_algorithm sha512_algorithm;
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extern struct digest_algorithm sha384_algorithm;
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extern struct digest_algorithm sha512_256_algorithm;
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extern struct digest_algorithm sha512_224_algorithm;
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#endif /* IPXE_SHA512_H */
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@ -32,6 +32,7 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
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* http://csrc.nist.gov/groups/ST/toolkit/documents/Examples/SHA512.pdf
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* http://csrc.nist.gov/groups/ST/toolkit/documents/Examples/SHA384.pdf
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* http://csrc.nist.gov/groups/ST/toolkit/documents/Examples/SHA512_256.pdf
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* http://csrc.nist.gov/groups/ST/toolkit/documents/Examples/SHA512_224.pdf
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*
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*/
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@ -124,6 +125,28 @@ DIGEST_TEST ( sha512_256_nist_abc_stu, &sha512_256_algorithm,
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0x9d, 0x3e, 0xf8, 0x3e, 0xe6, 0x14, 0x6f, 0xea, 0xc8,
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0x61, 0xe1, 0x9b, 0x56, 0x3a ) );
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/* Empty test vector (digest obtained from "shasum -a 512224 /dev/null") */
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DIGEST_TEST ( sha512_224_empty, &sha512_224_algorithm, DIGEST_EMPTY,
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DIGEST ( 0x6e, 0xd0, 0xdd, 0x02, 0x80, 0x6f, 0xa8, 0x9e, 0x25,
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0xde, 0x06, 0x0c, 0x19, 0xd3, 0xac, 0x86, 0xca, 0xbb,
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0x87, 0xd6, 0xa0, 0xdd, 0xd0, 0x5c, 0x33, 0x3b, 0x84,
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0xf4 ) );
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/* NIST test vector "abc" */
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DIGEST_TEST ( sha512_224_nist_abc, &sha512_224_algorithm, DIGEST_NIST_ABC,
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DIGEST ( 0x46, 0x34, 0x27, 0x0f, 0x70, 0x7b, 0x6a, 0x54, 0xda,
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0xae, 0x75, 0x30, 0x46, 0x08, 0x42, 0xe2, 0x0e, 0x37,
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0xed, 0x26, 0x5c, 0xee, 0xe9, 0xa4, 0x3e, 0x89, 0x24,
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0xaa ) );
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/* NIST test vector "abc...stu" */
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DIGEST_TEST ( sha512_224_nist_abc_stu, &sha512_224_algorithm,
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DIGEST_NIST_ABC_STU,
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DIGEST ( 0x23, 0xfe, 0xc5, 0xbb, 0x94, 0xd6, 0x0b, 0x23, 0x30,
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0x81, 0x92, 0x64, 0x0b, 0x0c, 0x45, 0x33, 0x35, 0xd6,
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0x64, 0x73, 0x4f, 0xe4, 0x0e, 0x72, 0x68, 0x67, 0x4a,
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0xf9 ) );
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/**
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* Perform SHA-512 family self-test
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*
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@ -140,6 +163,9 @@ static void sha512_test_exec ( void ) {
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digest_ok ( &sha512_256_empty );
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digest_ok ( &sha512_256_nist_abc );
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digest_ok ( &sha512_256_nist_abc_stu );
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digest_ok ( &sha512_224_empty );
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digest_ok ( &sha512_224_nist_abc );
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digest_ok ( &sha512_224_nist_abc_stu );
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/* Speed tests */
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DBG ( "SHA512 required %ld cycles per byte\n",
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@ -148,6 +174,8 @@ static void sha512_test_exec ( void ) {
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digest_cost ( &sha384_algorithm ) );
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DBG ( "SHA512/256 required %ld cycles per byte\n",
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digest_cost ( &sha512_256_algorithm ) );
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DBG ( "SHA512/224 required %ld cycles per byte\n",
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digest_cost ( &sha512_224_algorithm ) );
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}
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/** SHA-512 family self-test */
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