[linux-2.6] / crypto / tea.c

/* 
 * 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 ajgrothe@yahoo.com
 *
 * 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.
 *
 */

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

#define TEA_KEY_SIZE		16
#define TEA_BLOCK_SIZE		8
#define TEA_ROUNDS		32
#define TEA_DELTA		0x9e3779b9

#define XTEA_KEY_SIZE		16
#define XTEA_BLOCK_SIZE		8
#define XTEA_ROUNDS		32
#define XTEA_DELTA		0x9e3779b9

struct tea_ctx {
	u32 KEY[4];
};

struct xtea_ctx {
	u32 KEY[4];
};

static int tea_setkey(struct crypto_tfm *tfm, const u8 *in_key,
		      unsigned int key_len)
{
	struct tea_ctx *ctx = crypto_tfm_ctx(tfm);
	const __le32 *key = (const __le32 *)in_key;

	ctx->KEY[0] = le32_to_cpu(key[0]);
	ctx->KEY[1] = le32_to_cpu(key[1]);
	ctx->KEY[2] = le32_to_cpu(key[2]);
	ctx->KEY[3] = le32_to_cpu(key[3]);

	return 0; 

}

static void tea_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
{
	u32 y, z, n, sum = 0;
	u32 k0, k1, k2, k3;
	struct tea_ctx *ctx = crypto_tfm_ctx(tfm);
	const __le32 *in = (const __le32 *)src;
	__le32 *out = (__le32 *)dst;

	y = le32_to_cpu(in[0]);
	z = le32_to_cpu(in[1]);

	k0 = ctx->KEY[0];
	k1 = ctx->KEY[1];
	k2 = ctx->KEY[2];
	k3 = ctx->KEY[3];

	n = TEA_ROUNDS;

	while (n-- > 0) {
		sum += TEA_DELTA;
		y += ((z << 4) + k0) ^ (z + sum) ^ ((z >> 5) + k1);
		z += ((y << 4) + k2) ^ (y + sum) ^ ((y >> 5) + k3);
	}
	
	out[0] = cpu_to_le32(y);
	out[1] = cpu_to_le32(z);
}

static void tea_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
{
	u32 y, z, n, sum;
	u32 k0, k1, k2, k3;
	struct tea_ctx *ctx = crypto_tfm_ctx(tfm);
	const __le32 *in = (const __le32 *)src;
	__le32 *out = (__le32 *)dst;

	y = le32_to_cpu(in[0]);
	z = le32_to_cpu(in[1]);

	k0 = ctx->KEY[0];
	k1 = ctx->KEY[1];
	k2 = ctx->KEY[2];
	k3 = ctx->KEY[3];

	sum = TEA_DELTA << 5;

	n = TEA_ROUNDS;

	while (n-- > 0) {
		z -= ((y << 4) + k2) ^ (y + sum) ^ ((y >> 5) + k3);
		y -= ((z << 4) + k0) ^ (z + sum) ^ ((z >> 5) + k1);
		sum -= TEA_DELTA;
	}
	
	out[0] = cpu_to_le32(y);
	out[1] = cpu_to_le32(z);
}

static int xtea_setkey(struct crypto_tfm *tfm, const u8 *in_key,
		       unsigned int key_len)
{
	struct xtea_ctx *ctx = crypto_tfm_ctx(tfm);
	const __le32 *key = (const __le32 *)in_key;

	ctx->KEY[0] = le32_to_cpu(key[0]);
	ctx->KEY[1] = le32_to_cpu(key[1]);
	ctx->KEY[2] = le32_to_cpu(key[2]);
	ctx->KEY[3] = le32_to_cpu(key[3]);

	return 0; 

}

static void xtea_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
{
	u32 y, z, sum = 0;
	u32 limit = XTEA_DELTA * XTEA_ROUNDS;
	struct xtea_ctx *ctx = crypto_tfm_ctx(tfm);
	const __le32 *in = (const __le32 *)src;
	__le32 *out = (__le32 *)dst;

	y = le32_to_cpu(in[0]);
	z = le32_to_cpu(in[1]);

	while (sum != limit) {
		y += ((z << 4 ^ z >> 5) + z) ^ (sum + ctx->KEY[sum&3]); 
		sum += XTEA_DELTA;
		z += ((y << 4 ^ y >> 5) + y) ^ (sum + ctx->KEY[sum>>11 &3]); 
	}
	
	out[0] = cpu_to_le32(y);
	out[1] = cpu_to_le32(z);
}

static void xtea_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
{
	u32 y, z, sum;
	struct tea_ctx *ctx = crypto_tfm_ctx(tfm);
	const __le32 *in = (const __le32 *)src;
	__le32 *out = (__le32 *)dst;

	y = le32_to_cpu(in[0]);
	z = le32_to_cpu(in[1]);

	sum = XTEA_DELTA * XTEA_ROUNDS;

	while (sum) {
		z -= ((y << 4 ^ y >> 5) + y) ^ (sum + ctx->KEY[sum>>11 & 3]);
		sum -= XTEA_DELTA;
		y -= ((z << 4 ^ z >> 5) + z) ^ (sum + ctx->KEY[sum & 3]);
	}
	
	out[0] = cpu_to_le32(y);
	out[1] = cpu_to_le32(z);
}


static void xeta_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
{
	u32 y, z, sum = 0;
	u32 limit = XTEA_DELTA * XTEA_ROUNDS;
	struct xtea_ctx *ctx = crypto_tfm_ctx(tfm);
	const __le32 *in = (const __le32 *)src;
	__le32 *out = (__le32 *)dst;

	y = le32_to_cpu(in[0]);
	z = le32_to_cpu(in[1]);

	while (sum != limit) {
		y += (z << 4 ^ z >> 5) + (z ^ sum) + ctx->KEY[sum&3];
		sum += XTEA_DELTA;
		z += (y << 4 ^ y >> 5) + (y ^ sum) + ctx->KEY[sum>>11 &3];
	}
	
	out[0] = cpu_to_le32(y);
	out[1] = cpu_to_le32(z);
}

static void xeta_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
{
	u32 y, z, sum;
	struct tea_ctx *ctx = crypto_tfm_ctx(tfm);
	const __le32 *in = (const __le32 *)src;
	__le32 *out = (__le32 *)dst;

	y = le32_to_cpu(in[0]);
	z = le32_to_cpu(in[1]);

	sum = XTEA_DELTA * XTEA_ROUNDS;

	while (sum) {
		z -= (y << 4 ^ y >> 5) + (y ^ sum) + ctx->KEY[sum>>11 & 3];
		sum -= XTEA_DELTA;
		y -= (z << 4 ^ z >> 5) + (z ^ sum) + ctx->KEY[sum & 3];
	}
	
	out[0] = cpu_to_le32(y);
	out[1] = cpu_to_le32(z);
}

static struct crypto_alg tea_alg = {
	.cra_name		=	"tea",
	.cra_flags		=	CRYPTO_ALG_TYPE_CIPHER,
	.cra_blocksize		=	TEA_BLOCK_SIZE,
	.cra_ctxsize		=	sizeof (struct tea_ctx),
	.cra_alignmask		=	3,
	.cra_module		=	THIS_MODULE,
	.cra_list		=	LIST_HEAD_INIT(tea_alg.cra_list),
	.cra_u			=	{ .cipher = {
	.cia_min_keysize	=	TEA_KEY_SIZE,
	.cia_max_keysize	=	TEA_KEY_SIZE,
	.cia_setkey		= 	tea_setkey,
	.cia_encrypt		=	tea_encrypt,
	.cia_decrypt		=	tea_decrypt } }
};

static struct crypto_alg xtea_alg = {
	.cra_name		=	"xtea",
	.cra_flags		=	CRYPTO_ALG_TYPE_CIPHER,
	.cra_blocksize		=	XTEA_BLOCK_SIZE,
	.cra_ctxsize		=	sizeof (struct xtea_ctx),
	.cra_alignmask		=	3,
	.cra_module		=	THIS_MODULE,
	.cra_list		=	LIST_HEAD_INIT(xtea_alg.cra_list),
	.cra_u			=	{ .cipher = {
	.cia_min_keysize	=	XTEA_KEY_SIZE,
	.cia_max_keysize	=	XTEA_KEY_SIZE,
	.cia_setkey		= 	xtea_setkey,
	.cia_encrypt		=	xtea_encrypt,
	.cia_decrypt		=	xtea_decrypt } }
};

static struct crypto_alg xeta_alg = {
	.cra_name		=	"xeta",
	.cra_flags		=	CRYPTO_ALG_TYPE_CIPHER,
	.cra_blocksize		=	XTEA_BLOCK_SIZE,
	.cra_ctxsize		=	sizeof (struct xtea_ctx),
	.cra_alignmask		=	3,
	.cra_module		=	THIS_MODULE,
	.cra_list		=	LIST_HEAD_INIT(xtea_alg.cra_list),
	.cra_u			=	{ .cipher = {
	.cia_min_keysize	=	XTEA_KEY_SIZE,
	.cia_max_keysize	=	XTEA_KEY_SIZE,
	.cia_setkey		= 	xtea_setkey,
	.cia_encrypt		=	xeta_encrypt,
	.cia_decrypt		=	xeta_decrypt } }
};

static int __init init(void)
{
	int ret = 0;
	
	ret = crypto_register_alg(&tea_alg);
	if (ret < 0)
		goto out;

	ret = crypto_register_alg(&xtea_alg);
	if (ret < 0) {
		crypto_unregister_alg(&tea_alg);
		goto out;
	}

	ret = crypto_register_alg(&xeta_alg);
	if (ret < 0) {
		crypto_unregister_alg(&tea_alg);
		crypto_unregister_alg(&xtea_alg);
		goto out;
	}

out:	
	return ret;
}

static void __exit fini(void)
{
	crypto_unregister_alg(&tea_alg);
	crypto_unregister_alg(&xtea_alg);
	crypto_unregister_alg(&xeta_alg);
}

MODULE_ALIAS("xtea");
MODULE_ALIAS("xeta");

module_init(init);
module_exit(fini);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("TEA, XTEA & XETA Cryptographic Algorithms");
Commit	Line	Data
1da177e4 LT	1	/*
	2	* Cryptographic API.
	3	*
fb4f10ed	4	* TEA, XTEA, and XETA crypto alogrithms
1da177e4 LT	5	*
	6	* The TEA and Xtended TEA algorithms were developed by David Wheeler
	7	* and Roger Needham at the Computer Laboratory of Cambridge University.
	8	*
fb4f10ed AG	9	* Due to the order of evaluation in XTEA many people have incorrectly
	10	* implemented it. XETA (XTEA in the wrong order), exists for
	11	* compatibility with these implementations.
	12	*
1da177e4 LT	13	* Copyright (c) 2004 Aaron Grothe ajgrothe@yahoo.com
	14	*
	15	* This program is free software; you can redistribute it and/or modify
	16	* it under the terms of the GNU General Public License as published by
	17	* the Free Software Foundation; either version 2 of the License, or
	18	* (at your option) any later version.
	19	*
	20	*/
	21
	22	#include <linux/init.h>
	23	#include <linux/module.h>
	24	#include <linux/mm.h>
06ace7a9	25	#include <asm/byteorder.h>
1da177e4 LT	26	#include <asm/scatterlist.h>
1da177e4 LT	27	#include <linux/crypto.h>
06ace7a9	28	#include <linux/types.h>
1da177e4 LT	29
	30	#define TEA_KEY_SIZE 16
	31	#define TEA_BLOCK_SIZE 8
	32	#define TEA_ROUNDS 32
	33	#define TEA_DELTA 0x9e3779b9
	34
	35	#define XTEA_KEY_SIZE 16
	36	#define XTEA_BLOCK_SIZE 8
	37	#define XTEA_ROUNDS 32
	38	#define XTEA_DELTA 0x9e3779b9
	39
1da177e4 LT	40	struct tea_ctx {
	41	u32 KEY[4];
	42	};
	43
	44	struct xtea_ctx {
	45	u32 KEY[4];
	46	};
	47
6c2bb98b	48	static int tea_setkey(struct crypto_tfm tfm, const u8 in_key,
560c06ae	49	unsigned int key_len)
6c2bb98b HX	50	{
6c2bb98b HX	51	struct tea_ctx *ctx = crypto_tfm_ctx(tfm);
06ace7a9	52	const __le32 key = (const __le32 )in_key;
1da177e4	53
06ace7a9 HX	54	ctx->KEY[0] = le32_to_cpu(key[0]);
	55	ctx->KEY[1] = le32_to_cpu(key[1]);
	56	ctx->KEY[2] = le32_to_cpu(key[2]);
	57	ctx->KEY[3] = le32_to_cpu(key[3]);
1da177e4 LT	58
	59	return 0;
	60
	61	}
	62
6c2bb98b HX	63	static void tea_encrypt(struct crypto_tfm tfm, u8 dst, const u8 *src)
6c2bb98b HX	64	{
1da177e4 LT	65	u32 y, z, n, sum = 0;
1da177e4 LT	66	u32 k0, k1, k2, k3;
6c2bb98b	67	struct tea_ctx *ctx = crypto_tfm_ctx(tfm);
06ace7a9 HX	68	const __le32 in = (const __le32 )src;
06ace7a9 HX	69	__le32 out = (__le32 )dst;
1da177e4	70
06ace7a9 HX	71	y = le32_to_cpu(in[0]);
06ace7a9 HX	72	z = le32_to_cpu(in[1]);
1da177e4 LT	73
	74	k0 = ctx->KEY[0];
	75	k1 = ctx->KEY[1];
	76	k2 = ctx->KEY[2];
	77	k3 = ctx->KEY[3];
	78
	79	n = TEA_ROUNDS;
	80
	81	while (n-- > 0) {
	82	sum += TEA_DELTA;
	83	y += ((z << 4) + k0) ^ (z + sum) ^ ((z >> 5) + k1);
	84	z += ((y << 4) + k2) ^ (y + sum) ^ ((y >> 5) + k3);
	85	}
	86
06ace7a9 HX	87	out[0] = cpu_to_le32(y);
06ace7a9 HX	88	out[1] = cpu_to_le32(z);
1da177e4 LT	89	}
1da177e4 LT	90
6c2bb98b HX	91	static void tea_decrypt(struct crypto_tfm tfm, u8 dst, const u8 *src)
6c2bb98b HX	92	{
1da177e4 LT	93	u32 y, z, n, sum;
1da177e4 LT	94	u32 k0, k1, k2, k3;
6c2bb98b	95	struct tea_ctx *ctx = crypto_tfm_ctx(tfm);
06ace7a9 HX	96	const __le32 in = (const __le32 )src;
06ace7a9 HX	97	__le32 out = (__le32 )dst;
1da177e4	98
06ace7a9 HX	99	y = le32_to_cpu(in[0]);
06ace7a9 HX	100	z = le32_to_cpu(in[1]);
1da177e4 LT	101
	102	k0 = ctx->KEY[0];
	103	k1 = ctx->KEY[1];
	104	k2 = ctx->KEY[2];
	105	k3 = ctx->KEY[3];
	106
	107	sum = TEA_DELTA << 5;
	108
	109	n = TEA_ROUNDS;
	110
	111	while (n-- > 0) {
	112	z -= ((y << 4) + k2) ^ (y + sum) ^ ((y >> 5) + k3);
	113	y -= ((z << 4) + k0) ^ (z + sum) ^ ((z >> 5) + k1);
	114	sum -= TEA_DELTA;
	115	}
	116
06ace7a9 HX	117	out[0] = cpu_to_le32(y);
06ace7a9 HX	118	out[1] = cpu_to_le32(z);
1da177e4 LT	119	}
1da177e4 LT	120
6c2bb98b	121	static int xtea_setkey(struct crypto_tfm tfm, const u8 in_key,
560c06ae	122	unsigned int key_len)
6c2bb98b HX	123	{
6c2bb98b HX	124	struct xtea_ctx *ctx = crypto_tfm_ctx(tfm);
06ace7a9	125	const __le32 key = (const __le32 )in_key;
1da177e4	126
06ace7a9 HX	127	ctx->KEY[0] = le32_to_cpu(key[0]);
	128	ctx->KEY[1] = le32_to_cpu(key[1]);
	129	ctx->KEY[2] = le32_to_cpu(key[2]);
	130	ctx->KEY[3] = le32_to_cpu(key[3]);
1da177e4 LT	131
	132	return 0;
	133
	134	}
	135
6c2bb98b HX	136	static void xtea_encrypt(struct crypto_tfm tfm, u8 dst, const u8 *src)
6c2bb98b HX	137	{
1da177e4 LT	138	u32 y, z, sum = 0;
1da177e4 LT	139	u32 limit = XTEA_DELTA * XTEA_ROUNDS;
6c2bb98b	140	struct xtea_ctx *ctx = crypto_tfm_ctx(tfm);
06ace7a9 HX	141	const __le32 in = (const __le32 )src;
06ace7a9 HX	142	__le32 out = (__le32 )dst;
1da177e4	143
06ace7a9 HX	144	y = le32_to_cpu(in[0]);
06ace7a9 HX	145	z = le32_to_cpu(in[1]);
1da177e4 LT	146
1da177e4 LT	147	while (sum != limit) {
fb4f10ed	148	y += ((z << 4 ^ z >> 5) + z) ^ (sum + ctx->KEY[sum&3]);
1da177e4	149	sum += XTEA_DELTA;
fb4f10ed	150	z += ((y << 4 ^ y >> 5) + y) ^ (sum + ctx->KEY[sum>>11 &3]);
1da177e4 LT	151	}
1da177e4 LT	152
06ace7a9 HX	153	out[0] = cpu_to_le32(y);
06ace7a9 HX	154	out[1] = cpu_to_le32(z);
1da177e4 LT	155	}
1da177e4 LT	156
6c2bb98b HX	157	static void xtea_decrypt(struct crypto_tfm tfm, u8 dst, const u8 *src)
6c2bb98b HX	158	{
1da177e4	159	u32 y, z, sum;
6c2bb98b	160	struct tea_ctx *ctx = crypto_tfm_ctx(tfm);
06ace7a9 HX	161	const __le32 in = (const __le32 )src;
06ace7a9 HX	162	__le32 out = (__le32 )dst;
1da177e4	163
06ace7a9 HX	164	y = le32_to_cpu(in[0]);
06ace7a9 HX	165	z = le32_to_cpu(in[1]);
1da177e4 LT	166
	167	sum = XTEA_DELTA * XTEA_ROUNDS;
	168
fb4f10ed AG	169	while (sum) {
	170	z -= ((y << 4 ^ y >> 5) + y) ^ (sum + ctx->KEY[sum>>11 & 3]);
	171	sum -= XTEA_DELTA;
	172	y -= ((z << 4 ^ z >> 5) + z) ^ (sum + ctx->KEY[sum & 3]);
	173	}
	174
06ace7a9 HX	175	out[0] = cpu_to_le32(y);
06ace7a9 HX	176	out[1] = cpu_to_le32(z);
fb4f10ed AG	177	}
	178
	179
6c2bb98b HX	180	static void xeta_encrypt(struct crypto_tfm tfm, u8 dst, const u8 *src)
6c2bb98b HX	181	{
fb4f10ed AG	182	u32 y, z, sum = 0;
fb4f10ed AG	183	u32 limit = XTEA_DELTA * XTEA_ROUNDS;
6c2bb98b	184	struct xtea_ctx *ctx = crypto_tfm_ctx(tfm);
06ace7a9 HX	185	const __le32 in = (const __le32 )src;
06ace7a9 HX	186	__le32 out = (__le32 )dst;
fb4f10ed	187
06ace7a9 HX	188	y = le32_to_cpu(in[0]);
06ace7a9 HX	189	z = le32_to_cpu(in[1]);
fb4f10ed AG	190
	191	while (sum != limit) {
	192	y += (z << 4 ^ z >> 5) + (z ^ sum) + ctx->KEY[sum&3];
	193	sum += XTEA_DELTA;
	194	z += (y << 4 ^ y >> 5) + (y ^ sum) + ctx->KEY[sum>>11 &3];
	195	}
	196
06ace7a9 HX	197	out[0] = cpu_to_le32(y);
06ace7a9 HX	198	out[1] = cpu_to_le32(z);
fb4f10ed AG	199	}
fb4f10ed AG	200
6c2bb98b HX	201	static void xeta_decrypt(struct crypto_tfm tfm, u8 dst, const u8 *src)
6c2bb98b HX	202	{
fb4f10ed	203	u32 y, z, sum;
6c2bb98b	204	struct tea_ctx *ctx = crypto_tfm_ctx(tfm);
06ace7a9 HX	205	const __le32 in = (const __le32 )src;
06ace7a9 HX	206	__le32 out = (__le32 )dst;
fb4f10ed	207
06ace7a9 HX	208	y = le32_to_cpu(in[0]);
06ace7a9 HX	209	z = le32_to_cpu(in[1]);
fb4f10ed AG	210
	211	sum = XTEA_DELTA * XTEA_ROUNDS;
	212
1da177e4 LT	213	while (sum) {
	214	z -= (y << 4 ^ y >> 5) + (y ^ sum) + ctx->KEY[sum>>11 & 3];
	215	sum -= XTEA_DELTA;
	216	y -= (z << 4 ^ z >> 5) + (z ^ sum) + ctx->KEY[sum & 3];
	217	}
	218
06ace7a9 HX	219	out[0] = cpu_to_le32(y);
06ace7a9 HX	220	out[1] = cpu_to_le32(z);
1da177e4 LT	221	}
	222
	223	static struct crypto_alg tea_alg = {
	224	.cra_name = "tea",
	225	.cra_flags = CRYPTO_ALG_TYPE_CIPHER,
	226	.cra_blocksize = TEA_BLOCK_SIZE,
	227	.cra_ctxsize = sizeof (struct tea_ctx),
a429d260	228	.cra_alignmask = 3,
1da177e4 LT	229	.cra_module = THIS_MODULE,
	230	.cra_list = LIST_HEAD_INIT(tea_alg.cra_list),
	231	.cra_u = { .cipher = {
	232	.cia_min_keysize = TEA_KEY_SIZE,
	233	.cia_max_keysize = TEA_KEY_SIZE,
	234	.cia_setkey = tea_setkey,
	235	.cia_encrypt = tea_encrypt,
	236	.cia_decrypt = tea_decrypt } }
	237	};
	238
	239	static struct crypto_alg xtea_alg = {
	240	.cra_name = "xtea",
	241	.cra_flags = CRYPTO_ALG_TYPE_CIPHER,
	242	.cra_blocksize = XTEA_BLOCK_SIZE,
	243	.cra_ctxsize = sizeof (struct xtea_ctx),
a429d260	244	.cra_alignmask = 3,
1da177e4 LT	245	.cra_module = THIS_MODULE,
	246	.cra_list = LIST_HEAD_INIT(xtea_alg.cra_list),
	247	.cra_u = { .cipher = {
	248	.cia_min_keysize = XTEA_KEY_SIZE,
	249	.cia_max_keysize = XTEA_KEY_SIZE,
	250	.cia_setkey = xtea_setkey,
	251	.cia_encrypt = xtea_encrypt,
	252	.cia_decrypt = xtea_decrypt } }
	253	};
	254
fb4f10ed AG	255	static struct crypto_alg xeta_alg = {
	256	.cra_name = "xeta",
	257	.cra_flags = CRYPTO_ALG_TYPE_CIPHER,
	258	.cra_blocksize = XTEA_BLOCK_SIZE,
	259	.cra_ctxsize = sizeof (struct xtea_ctx),
a429d260	260	.cra_alignmask = 3,
fb4f10ed AG	261	.cra_module = THIS_MODULE,
	262	.cra_list = LIST_HEAD_INIT(xtea_alg.cra_list),
	263	.cra_u = { .cipher = {
	264	.cia_min_keysize = XTEA_KEY_SIZE,
	265	.cia_max_keysize = XTEA_KEY_SIZE,
	266	.cia_setkey = xtea_setkey,
	267	.cia_encrypt = xeta_encrypt,
	268	.cia_decrypt = xeta_decrypt } }
	269	};
	270
1da177e4 LT	271	static int __init init(void)
	272	{
	273	int ret = 0;
	274
	275	ret = crypto_register_alg(&tea_alg);
	276	if (ret < 0)
	277	goto out;
	278
	279	ret = crypto_register_alg(&xtea_alg);
	280	if (ret < 0) {
	281	crypto_unregister_alg(&tea_alg);
	282	goto out;
	283	}
	284
fb4f10ed AG	285	ret = crypto_register_alg(&xeta_alg);
	286	if (ret < 0) {
	287	crypto_unregister_alg(&tea_alg);
	288	crypto_unregister_alg(&xtea_alg);
	289	goto out;
	290	}
	291
1da177e4 LT	292	out:
	293	return ret;
	294	}
	295
	296	static void __exit fini(void)
	297	{
	298	crypto_unregister_alg(&tea_alg);
	299	crypto_unregister_alg(&xtea_alg);
fb4f10ed	300	crypto_unregister_alg(&xeta_alg);
1da177e4 LT	301	}
	302
	303	MODULE_ALIAS("xtea");
fb4f10ed	304	MODULE_ALIAS("xeta");
1da177e4 LT	305
	306	module_init(init);
	307	module_exit(fini);
	308
	309	MODULE_LICENSE("GPL");
fb4f10ed	310	MODULE_DESCRIPTION("TEA, XTEA & XETA Cryptographic Algorithms");