linux/crypto/tea.c

// SPDX-License-Identifier: GPL-2.0-or-later
/* 
 * Cryptographic API.
 *
 * TEA, XTEA, and XETA crypto alogrithms
 *
 * The TEA and Xtended TEA algorithms were developed by David Wheeler 
 * and Roger Needham at the Computer Laboratory of Cambridge University.
 *
 * Due to the order of evaluation in XTEA many people have incorrectly
 * implemented it.  XETA (XTEA in the wrong order), exists for
 * compatibility with these implementations.
 *
 * Copyright (c) 2004 Aaron Grothe [email protected]
 */

#include <crypto/algapi.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/mm.h>
#include <asm/byteorder.h>
#include <linux/types.h>

#define TEA_KEY_SIZE …
#define TEA_BLOCK_SIZE …
#define TEA_ROUNDS …
#define TEA_DELTA …

#define XTEA_KEY_SIZE …
#define XTEA_BLOCK_SIZE …
#define XTEA_ROUNDS …
#define XTEA_DELTA …

struct tea_ctx { … };

struct xtea_ctx { … };

static int tea_setkey(struct crypto_tfm *tfm, const u8 *in_key,
		      unsigned int key_len)
{ … }

static void tea_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
{ … }

static void tea_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
{ … }

static int xtea_setkey(struct crypto_tfm *tfm, const u8 *in_key,
		       unsigned int key_len)
{ … }

static void xtea_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
{ … }

static void xtea_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
{ … }


static void xeta_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
{ … }

static void xeta_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
{ … }

static struct crypto_alg tea_algs[3] = …;

static int __init tea_mod_init(void)
{ … }

static void __exit tea_mod_fini(void)
{ … }

MODULE_ALIAS_CRYPTO(…) …;
MODULE_ALIAS_CRYPTO(…) …;
MODULE_ALIAS_CRYPTO(…) …;

subsys_initcall(tea_mod_init);
module_exit(tea_mod_fini);

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