linux/crypto/xcbc.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Copyright (C)2006 USAGI/WIDE Project
 *
 * Author:
 * 	Kazunori Miyazawa <[email protected]>
 */

#include <crypto/internal/cipher.h>
#include <crypto/internal/hash.h>
#include <linux/err.h>
#include <linux/kernel.h>
#include <linux/module.h>

static u_int32_t ks[12] = …;

/*
 * +------------------------
 * | <parent tfm>
 * +------------------------
 * | xcbc_tfm_ctx
 * +------------------------
 * | consts (block size * 2)
 * +------------------------
 */
struct xcbc_tfm_ctx { … };

/*
 * +------------------------
 * | <shash desc>
 * +------------------------
 * | xcbc_desc_ctx
 * +------------------------
 * | odds (block size)
 * +------------------------
 * | prev (block size)
 * +------------------------
 */
struct xcbc_desc_ctx { … };

#define XCBC_BLOCKSIZE …

static int crypto_xcbc_digest_setkey(struct crypto_shash *parent,
				     const u8 *inkey, unsigned int keylen)
{ … }

static int crypto_xcbc_digest_init(struct shash_desc *pdesc)
{ … }

static int crypto_xcbc_digest_update(struct shash_desc *pdesc, const u8 *p,
				     unsigned int len)
{ … }

static int crypto_xcbc_digest_final(struct shash_desc *pdesc, u8 *out)
{ … }

static int xcbc_init_tfm(struct crypto_tfm *tfm)
{
	struct crypto_cipher *cipher;
	struct crypto_instance *inst = (void *)tfm->__crt_alg;
	struct crypto_cipher_spawn *spawn = crypto_instance_ctx(inst);
	struct xcbc_tfm_ctx *ctx = crypto_tfm_ctx(tfm);

	cipher = crypto_spawn_cipher(spawn);
	if (IS_ERR(cipher))
		return PTR_ERR(cipher);

	ctx->child = cipher;

	return 0;
};

static void xcbc_exit_tfm(struct crypto_tfm *tfm)
{ … }

static int xcbc_create(struct crypto_template *tmpl, struct rtattr **tb)
{ … }

static struct crypto_template crypto_xcbc_tmpl = …;

static int __init crypto_xcbc_module_init(void)
{ … }

static void __exit crypto_xcbc_module_exit(void)
{ … }

subsys_initcall(crypto_xcbc_module_init);
module_exit(crypto_xcbc_module_exit);

MODULE_LICENSE(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_ALIAS_CRYPTO(…) …;
MODULE_IMPORT_NS(…);