rsa_sha512_256.c

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/*
 * Copyright (C) 2026 Michael Brown <mbrown@fensystems.co.uk>.
 *
 * 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 (at your option) 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_SECBOOT ( PERMITTED );
 
#include <byteswap.h>
#include <ipxe/rsa.h>
#include <ipxe/sha512.h>
 
/** "sha512-256WithRSAEncryption" object identifier */
static uint8_t oid_sha512_256_with_rsa_encryption[] =
        { ASN1_OID_SHA512_256WITHRSAENCRYPTION };
 
/** "sha512-256WithRSAEncryption" OID-identified algorithm */
struct asn1_algorithm
sha512_256_with_rsa_encryption_algorithm __asn1_algorithm = {
        .name = "sha512-256WithRSAEncryption",
        .pubkey = &rsa_algorithm,
        .digest = &sha512_256_algorithm,
        .oid = ASN1_CURSOR ( oid_sha512_256_with_rsa_encryption ),
};
 
/** SHA-512/256 digestInfo prefix */
static const uint8_t rsa_sha512_256_prefix_data[] =
        { RSA_DIGESTINFO_PREFIX ( SHA512_256_DIGEST_SIZE,
                                  ASN1_OID_SHA512_256 ) };
 
/** SHA-512/256 digestInfo prefix */
struct rsa_digestinfo_prefix rsa_sha512_256_prefix __rsa_digestinfo_prefix = {
        .digest = &sha512_256_algorithm,
        .data = rsa_sha512_256_prefix_data,
        .len = sizeof ( rsa_sha512_256_prefix_data ),
};