linux/crypto/echainiv.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * echainiv: Encrypted Chain IV Generator
 *
 * This generator generates an IV based on a sequence number by multiplying
 * it with a salt and then encrypting it with the same key as used to encrypt
 * the plain text.  This algorithm requires that the block size be equal
 * to the IV size.  It is mainly useful for CBC.
 *
 * This generator can only be used by algorithms where authentication
 * is performed after encryption (i.e., authenc).
 *
 * Copyright (c) 2015 Herbert Xu <[email protected]>
 */

#include <crypto/internal/geniv.h>
#include <crypto/scatterwalk.h>
#include <crypto/skcipher.h>
#include <linux/err.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/string.h>

static int echainiv_encrypt(struct aead_request *req)
{ … }

static int echainiv_decrypt(struct aead_request *req)
{ … }

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

static struct crypto_template echainiv_tmpl = …;

static int __init echainiv_module_init(void)
{ … }

static void __exit echainiv_module_exit(void)
{ … }

subsys_initcall(echainiv_module_init);
module_exit(echainiv_module_exit);

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