[GitHub/mt8127/android_kernel_alcatel_ttab.git] / crypto / rmd160.c

/*
 * Cryptographic API.
 *
 * RIPEMD-160 - RACE Integrity Primitives Evaluation Message Digest.
 *
 * Based on the reference implementation by Antoon Bosselaers, ESAT-COSIC
 *
 * Copyright (c) 2008 Adrian-Ken Rueegsegger <rueegsegger (at) swiss-it.ch>
 *
 * 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 <linux/crypto.h>
#include <linux/cryptohash.h>
#include <linux/types.h>
#include <asm/byteorder.h>

#include "ripemd.h"

struct rmd160_ctx {
	u64 byte_count;
	u32 state[5];
	u32 buffer[16];
};

#define K1  RMD_K1
#define K2  RMD_K2
#define K3  RMD_K3
#define K4  RMD_K4
#define K5  RMD_K5
#define KK1 RMD_K6
#define KK2 RMD_K7
#define KK3 RMD_K8
#define KK4 RMD_K9
#define KK5 RMD_K1

#define F1(x, y, z) (x ^ y ^ z)		/* XOR */
#define F2(x, y, z) (z ^ (x & (y ^ z)))	/* x ? y : z */
#define F3(x, y, z) ((x | ~y) ^ z)
#define F4(x, y, z) (y ^ (z & (x ^ y)))	/* z ? x : y */
#define F5(x, y, z) (x ^ (y | ~z))

#define ROUND(a, b, c, d, e, f, k, x, s)  { \
	(a) += f((b), (c), (d)) + le32_to_cpu(x) + (k); \
	(a) = rol32((a), (s)) + (e); \
	(c) = rol32((c), 10); \
}

static void rmd160_transform(u32 *state, u32 const *in)
{
	u32 aa, bb, cc, dd, ee, aaa, bbb, ccc, ddd, eee;

	/* Initialize left lane */
	aa = state[0];
	bb = state[1];
	cc = state[2];
	dd = state[3];
	ee = state[4];

	/* Initialize right lane */
	aaa = state[0];
	bbb = state[1];
	ccc = state[2];
	ddd = state[3];
	eee = state[4];

	/* round 1: left lane */
	ROUND(aa, bb, cc, dd, ee, F1, K1, in[0],  11);
	ROUND(ee, aa, bb, cc, dd, F1, K1, in[1],  14);
	ROUND(dd, ee, aa, bb, cc, F1, K1, in[2],  15);
	ROUND(cc, dd, ee, aa, bb, F1, K1, in[3],  12);
	ROUND(bb, cc, dd, ee, aa, F1, K1, in[4],   5);
	ROUND(aa, bb, cc, dd, ee, F1, K1, in[5],   8);
	ROUND(ee, aa, bb, cc, dd, F1, K1, in[6],   7);
	ROUND(dd, ee, aa, bb, cc, F1, K1, in[7],   9);
	ROUND(cc, dd, ee, aa, bb, F1, K1, in[8],  11);
	ROUND(bb, cc, dd, ee, aa, F1, K1, in[9],  13);
	ROUND(aa, bb, cc, dd, ee, F1, K1, in[10], 14);
	ROUND(ee, aa, bb, cc, dd, F1, K1, in[11], 15);
	ROUND(dd, ee, aa, bb, cc, F1, K1, in[12],  6);
	ROUND(cc, dd, ee, aa, bb, F1, K1, in[13],  7);
	ROUND(bb, cc, dd, ee, aa, F1, K1, in[14],  9);
	ROUND(aa, bb, cc, dd, ee, F1, K1, in[15],  8);

	/* round 2: left lane" */
	ROUND(ee, aa, bb, cc, dd, F2, K2, in[7],   7);
	ROUND(dd, ee, aa, bb, cc, F2, K2, in[4],   6);
	ROUND(cc, dd, ee, aa, bb, F2, K2, in[13],  8);
	ROUND(bb, cc, dd, ee, aa, F2, K2, in[1],  13);
	ROUND(aa, bb, cc, dd, ee, F2, K2, in[10], 11);
	ROUND(ee, aa, bb, cc, dd, F2, K2, in[6],   9);
	ROUND(dd, ee, aa, bb, cc, F2, K2, in[15],  7);
	ROUND(cc, dd, ee, aa, bb, F2, K2, in[3],  15);
	ROUND(bb, cc, dd, ee, aa, F2, K2, in[12],  7);
	ROUND(aa, bb, cc, dd, ee, F2, K2, in[0],  12);
	ROUND(ee, aa, bb, cc, dd, F2, K2, in[9],  15);
	ROUND(dd, ee, aa, bb, cc, F2, K2, in[5],   9);
	ROUND(cc, dd, ee, aa, bb, F2, K2, in[2],  11);
	ROUND(bb, cc, dd, ee, aa, F2, K2, in[14],  7);
	ROUND(aa, bb, cc, dd, ee, F2, K2, in[11], 13);
	ROUND(ee, aa, bb, cc, dd, F2, K2, in[8],  12);

	/* round 3: left lane" */
	ROUND(dd, ee, aa, bb, cc, F3, K3, in[3],  11);
	ROUND(cc, dd, ee, aa, bb, F3, K3, in[10], 13);
	ROUND(bb, cc, dd, ee, aa, F3, K3, in[14],  6);
	ROUND(aa, bb, cc, dd, ee, F3, K3, in[4],   7);
	ROUND(ee, aa, bb, cc, dd, F3, K3, in[9],  14);
	ROUND(dd, ee, aa, bb, cc, F3, K3, in[15],  9);
	ROUND(cc, dd, ee, aa, bb, F3, K3, in[8],  13);
	ROUND(bb, cc, dd, ee, aa, F3, K3, in[1],  15);
	ROUND(aa, bb, cc, dd, ee, F3, K3, in[2],  14);
	ROUND(ee, aa, bb, cc, dd, F3, K3, in[7],   8);
	ROUND(dd, ee, aa, bb, cc, F3, K3, in[0],  13);
	ROUND(cc, dd, ee, aa, bb, F3, K3, in[6],   6);
	ROUND(bb, cc, dd, ee, aa, F3, K3, in[13],  5);
	ROUND(aa, bb, cc, dd, ee, F3, K3, in[11], 12);
	ROUND(ee, aa, bb, cc, dd, F3, K3, in[5],   7);
	ROUND(dd, ee, aa, bb, cc, F3, K3, in[12],  5);

	/* round 4: left lane" */
	ROUND(cc, dd, ee, aa, bb, F4, K4, in[1],  11);
	ROUND(bb, cc, dd, ee, aa, F4, K4, in[9],  12);
	ROUND(aa, bb, cc, dd, ee, F4, K4, in[11], 14);
	ROUND(ee, aa, bb, cc, dd, F4, K4, in[10], 15);
	ROUND(dd, ee, aa, bb, cc, F4, K4, in[0],  14);
	ROUND(cc, dd, ee, aa, bb, F4, K4, in[8],  15);
	ROUND(bb, cc, dd, ee, aa, F4, K4, in[12],  9);
	ROUND(aa, bb, cc, dd, ee, F4, K4, in[4],   8);
	ROUND(ee, aa, bb, cc, dd, F4, K4, in[13],  9);
	ROUND(dd, ee, aa, bb, cc, F4, K4, in[3],  14);
	ROUND(cc, dd, ee, aa, bb, F4, K4, in[7],   5);
	ROUND(bb, cc, dd, ee, aa, F4, K4, in[15],  6);
	ROUND(aa, bb, cc, dd, ee, F4, K4, in[14],  8);
	ROUND(ee, aa, bb, cc, dd, F4, K4, in[5],   6);
	ROUND(dd, ee, aa, bb, cc, F4, K4, in[6],   5);
	ROUND(cc, dd, ee, aa, bb, F4, K4, in[2],  12);

	/* round 5: left lane" */
	ROUND(bb, cc, dd, ee, aa, F5, K5, in[4],   9);
	ROUND(aa, bb, cc, dd, ee, F5, K5, in[0],  15);
	ROUND(ee, aa, bb, cc, dd, F5, K5, in[5],   5);
	ROUND(dd, ee, aa, bb, cc, F5, K5, in[9],  11);
	ROUND(cc, dd, ee, aa, bb, F5, K5, in[7],   6);
	ROUND(bb, cc, dd, ee, aa, F5, K5, in[12],  8);
	ROUND(aa, bb, cc, dd, ee, F5, K5, in[2],  13);
	ROUND(ee, aa, bb, cc, dd, F5, K5, in[10], 12);
	ROUND(dd, ee, aa, bb, cc, F5, K5, in[14],  5);
	ROUND(cc, dd, ee, aa, bb, F5, K5, in[1],  12);
	ROUND(bb, cc, dd, ee, aa, F5, K5, in[3],  13);
	ROUND(aa, bb, cc, dd, ee, F5, K5, in[8],  14);
	ROUND(ee, aa, bb, cc, dd, F5, K5, in[11], 11);
	ROUND(dd, ee, aa, bb, cc, F5, K5, in[6],   8);
	ROUND(cc, dd, ee, aa, bb, F5, K5, in[15],  5);
	ROUND(bb, cc, dd, ee, aa, F5, K5, in[13],  6);

	/* round 1: right lane */
	ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[5],   8);
	ROUND(eee, aaa, bbb, ccc, ddd, F5, KK1, in[14],  9);
	ROUND(ddd, eee, aaa, bbb, ccc, F5, KK1, in[7],   9);
	ROUND(ccc, ddd, eee, aaa, bbb, F5, KK1, in[0],  11);
	ROUND(bbb, ccc, ddd, eee, aaa, F5, KK1, in[9],  13);
	ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[2],  15);
	ROUND(eee, aaa, bbb, ccc, ddd, F5, KK1, in[11], 15);
	ROUND(ddd, eee, aaa, bbb, ccc, F5, KK1, in[4],   5);
	ROUND(ccc, ddd, eee, aaa, bbb, F5, KK1, in[13],  7);
	ROUND(bbb, ccc, ddd, eee, aaa, F5, KK1, in[6],   7);
	ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[15],  8);
	ROUND(eee, aaa, bbb, ccc, ddd, F5, KK1, in[8],  11);
	ROUND(ddd, eee, aaa, bbb, ccc, F5, KK1, in[1],  14);
	ROUND(ccc, ddd, eee, aaa, bbb, F5, KK1, in[10], 14);
	ROUND(bbb, ccc, ddd, eee, aaa, F5, KK1, in[3],  12);
	ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[12],  6);

	/* round 2: right lane */
	ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[6],   9);
	ROUND(ddd, eee, aaa, bbb, ccc, F4, KK2, in[11], 13);
	ROUND(ccc, ddd, eee, aaa, bbb, F4, KK2, in[3],  15);
	ROUND(bbb, ccc, ddd, eee, aaa, F4, KK2, in[7],   7);
	ROUND(aaa, bbb, ccc, ddd, eee, F4, KK2, in[0],  12);
	ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[13],  8);
	ROUND(ddd, eee, aaa, bbb, ccc, F4, KK2, in[5],   9);
	ROUND(ccc, ddd, eee, aaa, bbb, F4, KK2, in[10], 11);
	ROUND(bbb, ccc, ddd, eee, aaa, F4, KK2, in[14],  7);
	ROUND(aaa, bbb, ccc, ddd, eee, F4, KK2, in[15],  7);
	ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[8],  12);
	ROUND(ddd, eee, aaa, bbb, ccc, F4, KK2, in[12],  7);
	ROUND(ccc, ddd, eee, aaa, bbb, F4, KK2, in[4],   6);
	ROUND(bbb, ccc, ddd, eee, aaa, F4, KK2, in[9],  15);
	ROUND(aaa, bbb, ccc, ddd, eee, F4, KK2, in[1],  13);
	ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[2],  11);

	/* round 3: right lane */
	ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[15],  9);
	ROUND(ccc, ddd, eee, aaa, bbb, F3, KK3, in[5],   7);
	ROUND(bbb, ccc, ddd, eee, aaa, F3, KK3, in[1],  15);
	ROUND(aaa, bbb, ccc, ddd, eee, F3, KK3, in[3],  11);
	ROUND(eee, aaa, bbb, ccc, ddd, F3, KK3, in[7],   8);
	ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[14],  6);
	ROUND(ccc, ddd, eee, aaa, bbb, F3, KK3, in[6],   6);
	ROUND(bbb, ccc, ddd, eee, aaa, F3, KK3, in[9],  14);
	ROUND(aaa, bbb, ccc, ddd, eee, F3, KK3, in[11], 12);
	ROUND(eee, aaa, bbb, ccc, ddd, F3, KK3, in[8],  13);
	ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[12],  5);
	ROUND(ccc, ddd, eee, aaa, bbb, F3, KK3, in[2],  14);
	ROUND(bbb, ccc, ddd, eee, aaa, F3, KK3, in[10], 13);
	ROUND(aaa, bbb, ccc, ddd, eee, F3, KK3, in[0],  13);
	ROUND(eee, aaa, bbb, ccc, ddd, F3, KK3, in[4],   7);
	ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[13],  5);

	/* round 4: right lane */
	ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[8],  15);
	ROUND(bbb, ccc, ddd, eee, aaa, F2, KK4, in[6],   5);
	ROUND(aaa, bbb, ccc, ddd, eee, F2, KK4, in[4],   8);
	ROUND(eee, aaa, bbb, ccc, ddd, F2, KK4, in[1],  11);
	ROUND(ddd, eee, aaa, bbb, ccc, F2, KK4, in[3],  14);
	ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[11], 14);
	ROUND(bbb, ccc, ddd, eee, aaa, F2, KK4, in[15],  6);
	ROUND(aaa, bbb, ccc, ddd, eee, F2, KK4, in[0],  14);
	ROUND(eee, aaa, bbb, ccc, ddd, F2, KK4, in[5],   6);
	ROUND(ddd, eee, aaa, bbb, ccc, F2, KK4, in[12],  9);
	ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[2],  12);
	ROUND(bbb, ccc, ddd, eee, aaa, F2, KK4, in[13],  9);
	ROUND(aaa, bbb, ccc, ddd, eee, F2, KK4, in[9],  12);
	ROUND(eee, aaa, bbb, ccc, ddd, F2, KK4, in[7],   5);
	ROUND(ddd, eee, aaa, bbb, ccc, F2, KK4, in[10], 15);
	ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[14],  8);

	/* round 5: right lane */
	ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[12],  8);
	ROUND(aaa, bbb, ccc, ddd, eee, F1, KK5, in[15],  5);
	ROUND(eee, aaa, bbb, ccc, ddd, F1, KK5, in[10], 12);
	ROUND(ddd, eee, aaa, bbb, ccc, F1, KK5, in[4],   9);
	ROUND(ccc, ddd, eee, aaa, bbb, F1, KK5, in[1],  12);
	ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[5],   5);
	ROUND(aaa, bbb, ccc, ddd, eee, F1, KK5, in[8],  14);
	ROUND(eee, aaa, bbb, ccc, ddd, F1, KK5, in[7],   6);
	ROUND(ddd, eee, aaa, bbb, ccc, F1, KK5, in[6],   8);
	ROUND(ccc, ddd, eee, aaa, bbb, F1, KK5, in[2],  13);
	ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[13],  6);
	ROUND(aaa, bbb, ccc, ddd, eee, F1, KK5, in[14],  5);
	ROUND(eee, aaa, bbb, ccc, ddd, F1, KK5, in[0],  15);
	ROUND(ddd, eee, aaa, bbb, ccc, F1, KK5, in[3],  13);
	ROUND(ccc, ddd, eee, aaa, bbb, F1, KK5, in[9],  11);
	ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[11], 11);

	/* combine results */
	ddd += cc + state[1];		/* final result for state[0] */
	state[1] = state[2] + dd + eee;
	state[2] = state[3] + ee + aaa;
	state[3] = state[4] + aa + bbb;
	state[4] = state[0] + bb + ccc;
	state[0] = ddd;

	return;
}

static void rmd160_init(struct crypto_tfm *tfm)
{
	struct rmd160_ctx *rctx = crypto_tfm_ctx(tfm);

	rctx->byte_count = 0;

	rctx->state[0] = RMD_H0;
	rctx->state[1] = RMD_H1;
	rctx->state[2] = RMD_H2;
	rctx->state[3] = RMD_H3;
	rctx->state[4] = RMD_H4;

	memset(rctx->buffer, 0, sizeof(rctx->buffer));
}

static void rmd160_update(struct crypto_tfm *tfm, const u8 *data,
			  unsigned int len)
{
	struct rmd160_ctx *rctx = crypto_tfm_ctx(tfm);
	const u32 avail = sizeof(rctx->buffer) - (rctx->byte_count & 0x3f);

	rctx->byte_count += len;

	/* Enough space in buffer? If so copy and we're done */
	if (avail > len) {
		memcpy((char *)rctx->buffer + (sizeof(rctx->buffer) - avail),
		       data, len);
		return;
	}

	memcpy((char *)rctx->buffer + (sizeof(rctx->buffer) - avail),
	       data, avail);

	rmd160_transform(rctx->state, rctx->buffer);
	data += avail;
	len -= avail;

	while (len >= sizeof(rctx->buffer)) {
		memcpy(rctx->buffer, data, sizeof(rctx->buffer));
		rmd160_transform(rctx->state, rctx->buffer);
		data += sizeof(rctx->buffer);
		len -= sizeof(rctx->buffer);
	}

	memcpy(rctx->buffer, data, len);
}

/* Add padding and return the message digest. */
static void rmd160_final(struct crypto_tfm *tfm, u8 *out)
{
	struct rmd160_ctx *rctx = crypto_tfm_ctx(tfm);
	u32 i, index, padlen;
	u64 bits;
	u32 *dst = (u32 *)out;
	static const u8 padding[64] = { 0x80, };

	bits = cpu_to_le64(rctx->byte_count << 3);

	/* Pad out to 56 mod 64 */
	index = rctx->byte_count & 0x3f;
	padlen = (index < 56) ? (56 - index) : ((64+56) - index);
	rmd160_update(tfm, padding, padlen);

	/* Append length */
	rmd160_update(tfm, (const u8 *)&bits, sizeof(bits));

	/* Store state in digest */
	for (i = 0; i < 5; i++)
		dst[i] = cpu_to_le32(rctx->state[i]);

	/* Wipe context */
	memset(rctx, 0, sizeof(*rctx));
}

static struct crypto_alg alg = {
	.cra_name	 =	"rmd160",
	.cra_driver_name =	"rmd160",
	.cra_flags	 =	CRYPTO_ALG_TYPE_DIGEST,
	.cra_blocksize	 =	RMD160_BLOCK_SIZE,
	.cra_ctxsize	 =	sizeof(struct rmd160_ctx),
	.cra_module	 =	THIS_MODULE,
	.cra_list	 =	LIST_HEAD_INIT(alg.cra_list),
	.cra_u		 =	{ .digest = {
	.dia_digestsize	 =	RMD160_DIGEST_SIZE,
	.dia_init	 =	rmd160_init,
	.dia_update	 =	rmd160_update,
	.dia_final	 =	rmd160_final } }
};

static int __init rmd160_mod_init(void)
{
	return crypto_register_alg(&alg);
}

static void __exit rmd160_mod_fini(void)
{
	crypto_unregister_alg(&alg);
}

module_init(rmd160_mod_init);
module_exit(rmd160_mod_fini);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("RIPEMD-160 Message Digest");

MODULE_ALIAS("rmd160");
Commit	Line	Data
c6580eb8 AKR	1	/*
	2	* Cryptographic API.
	3	*
	4	* RIPEMD-160 - RACE Integrity Primitives Evaluation Message Digest.
	5	*
	6	* Based on the reference implementation by Antoon Bosselaers, ESAT-COSIC
	7	*
	8	* Copyright (c) 2008 Adrian-Ken Rueegsegger <rueegsegger (at) swiss-it.ch>
	9	*
	10	* This program is free software; you can redistribute it and/or modify it
	11	* under the terms of the GNU General Public License as published by the Free
	12	* Software Foundation; either version 2 of the License, or (at your option)
	13	* any later version.
	14	*
	15	*/
	16	#include <linux/init.h>
	17	#include <linux/module.h>
	18	#include <linux/mm.h>
	19	#include <linux/crypto.h>
	20	#include <linux/cryptohash.h>
	21	#include <linux/types.h>
	22	#include <asm/byteorder.h>
	23
	24	#include "ripemd.h"
	25
	26	struct rmd160_ctx {
	27	u64 byte_count;
	28	u32 state[5];
	29	u32 buffer[16];
	30	};
	31
ba6b0398 AKR	32	#define K1 RMD_K1
	33	#define K2 RMD_K2
	34	#define K3 RMD_K3
	35	#define K4 RMD_K4
	36	#define K5 RMD_K5
	37	#define KK1 RMD_K6
	38	#define KK2 RMD_K7
	39	#define KK3 RMD_K8
	40	#define KK4 RMD_K9
	41	#define KK5 RMD_K1
c6580eb8 AKR	42
	43	#define F1(x, y, z) (x ^ y ^ z) /* XOR */
	44	#define F2(x, y, z) (z ^ (x & (y ^ z))) /* x ? y : z */
	45	#define F3(x, y, z) ((x \| ~y) ^ z)
	46	#define F4(x, y, z) (y ^ (z & (x ^ y))) /* z ? x : y */
	47	#define F5(x, y, z) (x ^ (y \| ~z))
	48
	49	#define ROUND(a, b, c, d, e, f, k, x, s) { \
c928a0cd	50	(a) += f((b), (c), (d)) + le32_to_cpu(x) + (k); \
c6580eb8 AKR	51	(a) = rol32((a), (s)) + (e); \
	52	(c) = rol32((c), 10); \
	53	}
	54
	55	static void rmd160_transform(u32 state, u32 const in)
	56	{
	57	u32 aa, bb, cc, dd, ee, aaa, bbb, ccc, ddd, eee;
	58
	59	/* Initialize left lane */
	60	aa = state[0];
	61	bb = state[1];
	62	cc = state[2];
	63	dd = state[3];
	64	ee = state[4];
	65
	66	/* Initialize right lane */
	67	aaa = state[0];
	68	bbb = state[1];
	69	ccc = state[2];
	70	ddd = state[3];
	71	eee = state[4];
	72
	73	/* round 1: left lane */
	74	ROUND(aa, bb, cc, dd, ee, F1, K1, in[0], 11);
	75	ROUND(ee, aa, bb, cc, dd, F1, K1, in[1], 14);
	76	ROUND(dd, ee, aa, bb, cc, F1, K1, in[2], 15);
	77	ROUND(cc, dd, ee, aa, bb, F1, K1, in[3], 12);
	78	ROUND(bb, cc, dd, ee, aa, F1, K1, in[4], 5);
	79	ROUND(aa, bb, cc, dd, ee, F1, K1, in[5], 8);
	80	ROUND(ee, aa, bb, cc, dd, F1, K1, in[6], 7);
	81	ROUND(dd, ee, aa, bb, cc, F1, K1, in[7], 9);
	82	ROUND(cc, dd, ee, aa, bb, F1, K1, in[8], 11);
	83	ROUND(bb, cc, dd, ee, aa, F1, K1, in[9], 13);
	84	ROUND(aa, bb, cc, dd, ee, F1, K1, in[10], 14);
	85	ROUND(ee, aa, bb, cc, dd, F1, K1, in[11], 15);
	86	ROUND(dd, ee, aa, bb, cc, F1, K1, in[12], 6);
	87	ROUND(cc, dd, ee, aa, bb, F1, K1, in[13], 7);
	88	ROUND(bb, cc, dd, ee, aa, F1, K1, in[14], 9);
	89	ROUND(aa, bb, cc, dd, ee, F1, K1, in[15], 8);
	90
	91	/* round 2: left lane" */
	92	ROUND(ee, aa, bb, cc, dd, F2, K2, in[7], 7);
	93	ROUND(dd, ee, aa, bb, cc, F2, K2, in[4], 6);
	94	ROUND(cc, dd, ee, aa, bb, F2, K2, in[13], 8);
	95	ROUND(bb, cc, dd, ee, aa, F2, K2, in[1], 13);
	96	ROUND(aa, bb, cc, dd, ee, F2, K2, in[10], 11);
	97	ROUND(ee, aa, bb, cc, dd, F2, K2, in[6], 9);
	98	ROUND(dd, ee, aa, bb, cc, F2, K2, in[15], 7);
	99	ROUND(cc, dd, ee, aa, bb, F2, K2, in[3], 15);
	100	ROUND(bb, cc, dd, ee, aa, F2, K2, in[12], 7);
	101	ROUND(aa, bb, cc, dd, ee, F2, K2, in[0], 12);
	102	ROUND(ee, aa, bb, cc, dd, F2, K2, in[9], 15);
	103	ROUND(dd, ee, aa, bb, cc, F2, K2, in[5], 9);
	104	ROUND(cc, dd, ee, aa, bb, F2, K2, in[2], 11);
	105	ROUND(bb, cc, dd, ee, aa, F2, K2, in[14], 7);
	106	ROUND(aa, bb, cc, dd, ee, F2, K2, in[11], 13);
	107	ROUND(ee, aa, bb, cc, dd, F2, K2, in[8], 12);
	108
	109	/* round 3: left lane" */
	110	ROUND(dd, ee, aa, bb, cc, F3, K3, in[3], 11);
	111	ROUND(cc, dd, ee, aa, bb, F3, K3, in[10], 13);
	112	ROUND(bb, cc, dd, ee, aa, F3, K3, in[14], 6);
	113	ROUND(aa, bb, cc, dd, ee, F3, K3, in[4], 7);
	114	ROUND(ee, aa, bb, cc, dd, F3, K3, in[9], 14);
115	ROUND(dd, ee, aa, bb, cc, F3, K3, in[15], 9);
116	ROUND(cc, dd, ee, aa, bb, F3, K3, in[8], 13);
117	ROUND(bb, cc, dd, ee, aa, F3, K3, in[1], 15);
118	ROUND(aa, bb, cc, dd, ee, F3, K3, in[2], 14);
119	ROUND(ee, aa, bb, cc, dd, F3, K3, in[7], 8);
120	ROUND(dd, ee, aa, bb, cc, F3, K3, in[0], 13);
121	ROUND(cc, dd, ee, aa, bb, F3, K3, in[6], 6);
122	ROUND(bb, cc, dd, ee, aa, F3, K3, in[13], 5);
123	ROUND(aa, bb, cc, dd, ee, F3, K3, in[11], 12);
124	ROUND(ee, aa, bb, cc, dd, F3, K3, in[5], 7);
125	ROUND(dd, ee, aa, bb, cc, F3, K3, in[12], 5);
126
127	/* round 4: left lane" */
128	ROUND(cc, dd, ee, aa, bb, F4, K4, in[1], 11);
129	ROUND(bb, cc, dd, ee, aa, F4, K4, in[9], 12);
130	ROUND(aa, bb, cc, dd, ee, F4, K4, in[11], 14);
131	ROUND(ee, aa, bb, cc, dd, F4, K4, in[10], 15);
132	ROUND(dd, ee, aa, bb, cc, F4, K4, in[0], 14);
133	ROUND(cc, dd, ee, aa, bb, F4, K4, in[8], 15);
134	ROUND(bb, cc, dd, ee, aa, F4, K4, in[12], 9);
135	ROUND(aa, bb, cc, dd, ee, F4, K4, in[4], 8);
136	ROUND(ee, aa, bb, cc, dd, F4, K4, in[13], 9);
137	ROUND(dd, ee, aa, bb, cc, F4, K4, in[3], 14);
138	ROUND(cc, dd, ee, aa, bb, F4, K4, in[7], 5);
139	ROUND(bb, cc, dd, ee, aa, F4, K4, in[15], 6);
140	ROUND(aa, bb, cc, dd, ee, F4, K4, in[14], 8);
141	ROUND(ee, aa, bb, cc, dd, F4, K4, in[5], 6);
142	ROUND(dd, ee, aa, bb, cc, F4, K4, in[6], 5);
143	ROUND(cc, dd, ee, aa, bb, F4, K4, in[2], 12);
144
145	/* round 5: left lane" */
146	ROUND(bb, cc, dd, ee, aa, F5, K5, in[4], 9);
147	ROUND(aa, bb, cc, dd, ee, F5, K5, in[0], 15);
148	ROUND(ee, aa, bb, cc, dd, F5, K5, in[5], 5);
149	ROUND(dd, ee, aa, bb, cc, F5, K5, in[9], 11);
150	ROUND(cc, dd, ee, aa, bb, F5, K5, in[7], 6);
151	ROUND(bb, cc, dd, ee, aa, F5, K5, in[12], 8);
152	ROUND(aa, bb, cc, dd, ee, F5, K5, in[2], 13);
153	ROUND(ee, aa, bb, cc, dd, F5, K5, in[10], 12);
154	ROUND(dd, ee, aa, bb, cc, F5, K5, in[14], 5);
155	ROUND(cc, dd, ee, aa, bb, F5, K5, in[1], 12);
156	ROUND(bb, cc, dd, ee, aa, F5, K5, in[3], 13);
157	ROUND(aa, bb, cc, dd, ee, F5, K5, in[8], 14);
158	ROUND(ee, aa, bb, cc, dd, F5, K5, in[11], 11);
159	ROUND(dd, ee, aa, bb, cc, F5, K5, in[6], 8);
160	ROUND(cc, dd, ee, aa, bb, F5, K5, in[15], 5);
161	ROUND(bb, cc, dd, ee, aa, F5, K5, in[13], 6);
162
163	/* round 1: right lane */
164	ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[5], 8);
165	ROUND(eee, aaa, bbb, ccc, ddd, F5, KK1, in[14], 9);
166	ROUND(ddd, eee, aaa, bbb, ccc, F5, KK1, in[7], 9);
167	ROUND(ccc, ddd, eee, aaa, bbb, F5, KK1, in[0], 11);
168	ROUND(bbb, ccc, ddd, eee, aaa, F5, KK1, in[9], 13);
169	ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[2], 15);
170	ROUND(eee, aaa, bbb, ccc, ddd, F5, KK1, in[11], 15);
171	ROUND(ddd, eee, aaa, bbb, ccc, F5, KK1, in[4], 5);
172	ROUND(ccc, ddd, eee, aaa, bbb, F5, KK1, in[13], 7);
173	ROUND(bbb, ccc, ddd, eee, aaa, F5, KK1, in[6], 7);
174	ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[15], 8);
175	ROUND(eee, aaa, bbb, ccc, ddd, F5, KK1, in[8], 11);
176	ROUND(ddd, eee, aaa, bbb, ccc, F5, KK1, in[1], 14);
177	ROUND(ccc, ddd, eee, aaa, bbb, F5, KK1, in[10], 14);
178	ROUND(bbb, ccc, ddd, eee, aaa, F5, KK1, in[3], 12);
179	ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[12], 6);
180
181	/* round 2: right lane */
182	ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[6], 9);
183	ROUND(ddd, eee, aaa, bbb, ccc, F4, KK2, in[11], 13);
184	ROUND(ccc, ddd, eee, aaa, bbb, F4, KK2, in[3], 15);
185	ROUND(bbb, ccc, ddd, eee, aaa, F4, KK2, in[7], 7);
186	ROUND(aaa, bbb, ccc, ddd, eee, F4, KK2, in[0], 12);
187	ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[13], 8);
188	ROUND(ddd, eee, aaa, bbb, ccc, F4, KK2, in[5], 9);
189	ROUND(ccc, ddd, eee, aaa, bbb, F4, KK2, in[10], 11);
190	ROUND(bbb, ccc, ddd, eee, aaa, F4, KK2, in[14], 7);
191	ROUND(aaa, bbb, ccc, ddd, eee, F4, KK2, in[15], 7);
192	ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[8], 12);
193	ROUND(ddd, eee, aaa, bbb, ccc, F4, KK2, in[12], 7);
194	ROUND(ccc, ddd, eee, aaa, bbb, F4, KK2, in[4], 6);
195	ROUND(bbb, ccc, ddd, eee, aaa, F4, KK2, in[9], 15);
196	ROUND(aaa, bbb, ccc, ddd, eee, F4, KK2, in[1], 13);
197	ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[2], 11);
198
199	/* round 3: right lane */
200	ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[15], 9);
201	ROUND(ccc, ddd, eee, aaa, bbb, F3, KK3, in[5], 7);
202	ROUND(bbb, ccc, ddd, eee, aaa, F3, KK3, in[1], 15);
203	ROUND(aaa, bbb, ccc, ddd, eee, F3, KK3, in[3], 11);
204	ROUND(eee, aaa, bbb, ccc, ddd, F3, KK3, in[7], 8);
205	ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[14], 6);
206	ROUND(ccc, ddd, eee, aaa, bbb, F3, KK3, in[6], 6);
207	ROUND(bbb, ccc, ddd, eee, aaa, F3, KK3, in[9], 14);
208	ROUND(aaa, bbb, ccc, ddd, eee, F3, KK3, in[11], 12);
209	ROUND(eee, aaa, bbb, ccc, ddd, F3, KK3, in[8], 13);
210	ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[12], 5);
211	ROUND(ccc, ddd, eee, aaa, bbb, F3, KK3, in[2], 14);
212	ROUND(bbb, ccc, ddd, eee, aaa, F3, KK3, in[10], 13);
213	ROUND(aaa, bbb, ccc, ddd, eee, F3, KK3, in[0], 13);
214	ROUND(eee, aaa, bbb, ccc, ddd, F3, KK3, in[4], 7);
215	ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[13], 5);
216
217	/* round 4: right lane */
218	ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[8], 15);
219	ROUND(bbb, ccc, ddd, eee, aaa, F2, KK4, in[6], 5);
220	ROUND(aaa, bbb, ccc, ddd, eee, F2, KK4, in[4], 8);
221	ROUND(eee, aaa, bbb, ccc, ddd, F2, KK4, in[1], 11);
222	ROUND(ddd, eee, aaa, bbb, ccc, F2, KK4, in[3], 14);
223	ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[11], 14);
224	ROUND(bbb, ccc, ddd, eee, aaa, F2, KK4, in[15], 6);
225	ROUND(aaa, bbb, ccc, ddd, eee, F2, KK4, in[0], 14);
226	ROUND(eee, aaa, bbb, ccc, ddd, F2, KK4, in[5], 6);
227	ROUND(ddd, eee, aaa, bbb, ccc, F2, KK4, in[12], 9);
228	ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[2], 12);
229	ROUND(bbb, ccc, ddd, eee, aaa, F2, KK4, in[13], 9);
230	ROUND(aaa, bbb, ccc, ddd, eee, F2, KK4, in[9], 12);
231	ROUND(eee, aaa, bbb, ccc, ddd, F2, KK4, in[7], 5);
232	ROUND(ddd, eee, aaa, bbb, ccc, F2, KK4, in[10], 15);
233	ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[14], 8);
234
235	/* round 5: right lane */
236	ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[12], 8);
237	ROUND(aaa, bbb, ccc, ddd, eee, F1, KK5, in[15], 5);
238	ROUND(eee, aaa, bbb, ccc, ddd, F1, KK5, in[10], 12);
239	ROUND(ddd, eee, aaa, bbb, ccc, F1, KK5, in[4], 9);
240	ROUND(ccc, ddd, eee, aaa, bbb, F1, KK5, in[1], 12);
241	ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[5], 5);
242	ROUND(aaa, bbb, ccc, ddd, eee, F1, KK5, in[8], 14);
243	ROUND(eee, aaa, bbb, ccc, ddd, F1, KK5, in[7], 6);
244	ROUND(ddd, eee, aaa, bbb, ccc, F1, KK5, in[6], 8);
245	ROUND(ccc, ddd, eee, aaa, bbb, F1, KK5, in[2], 13);
246	ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[13], 6);
247	ROUND(aaa, bbb, ccc, ddd, eee, F1, KK5, in[14], 5);
248	ROUND(eee, aaa, bbb, ccc, ddd, F1, KK5, in[0], 15);
249	ROUND(ddd, eee, aaa, bbb, ccc, F1, KK5, in[3], 13);
250	ROUND(ccc, ddd, eee, aaa, bbb, F1, KK5, in[9], 11);
251	ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[11], 11);
252
253	/* combine results */
254	ddd += cc + state[1]; /* final result for state[0] */
255	state[1] = state[2] + dd + eee;
256	state[2] = state[3] + ee + aaa;
257	state[3] = state[4] + aa + bbb;
258	state[4] = state[0] + bb + ccc;
259	state[0] = ddd;
260
261	return;
262	}
263
c6580eb8 AKR	264	static void rmd160_init(struct crypto_tfm *tfm)
	265	{
	266	struct rmd160_ctx *rctx = crypto_tfm_ctx(tfm);
	267
	268	rctx->byte_count = 0;
	269
	270	rctx->state[0] = RMD_H0;
	271	rctx->state[1] = RMD_H1;
	272	rctx->state[2] = RMD_H2;
	273	rctx->state[3] = RMD_H3;
	274	rctx->state[4] = RMD_H4;
	275
	276	memset(rctx->buffer, 0, sizeof(rctx->buffer));
	277	}
	278
	279	static void rmd160_update(struct crypto_tfm tfm, const u8 data,
	280	unsigned int len)
	281	{
	282	struct rmd160_ctx *rctx = crypto_tfm_ctx(tfm);
	283	const u32 avail = sizeof(rctx->buffer) - (rctx->byte_count & 0x3f);
	284
	285	rctx->byte_count += len;
	286
	287	/* Enough space in buffer? If so copy and we're done */
	288	if (avail > len) {
	289	memcpy((char *)rctx->buffer + (sizeof(rctx->buffer) - avail),
	290	data, len);
	291	return;
	292	}
	293
	294	memcpy((char *)rctx->buffer + (sizeof(rctx->buffer) - avail),
	295	data, avail);
	296
c928a0cd	297	rmd160_transform(rctx->state, rctx->buffer);
c6580eb8 AKR	298	data += avail;
	299	len -= avail;
	300
	301	while (len >= sizeof(rctx->buffer)) {
	302	memcpy(rctx->buffer, data, sizeof(rctx->buffer));
c928a0cd	303	rmd160_transform(rctx->state, rctx->buffer);
c6580eb8 AKR	304	data += sizeof(rctx->buffer);
	305	len -= sizeof(rctx->buffer);
	306	}
	307
	308	memcpy(rctx->buffer, data, len);
	309	}
	310
	311	/* Add padding and return the message digest. */
	312	static void rmd160_final(struct crypto_tfm tfm, u8 out)
	313	{
	314	struct rmd160_ctx *rctx = crypto_tfm_ctx(tfm);
c928a0cd	315	u32 i, index, padlen;
c6580eb8	316	u64 bits;
c928a0cd	317	u32 dst = (u32 )out;
c6580eb8	318	static const u8 padding[64] = { 0x80, };
c928a0cd AKR	319
c928a0cd AKR	320	bits = cpu_to_le64(rctx->byte_count << 3);
c6580eb8 AKR	321
	322	/* Pad out to 56 mod 64 */
	323	index = rctx->byte_count & 0x3f;
	324	padlen = (index < 56) ? (56 - index) : ((64+56) - index);
	325	rmd160_update(tfm, padding, padlen);
	326
	327	/* Append length */
	328	rmd160_update(tfm, (const u8 *)&bits, sizeof(bits));
	329
	330	/* Store state in digest */
c928a0cd AKR	331	for (i = 0; i < 5; i++)
c928a0cd AKR	332	dst[i] = cpu_to_le32(rctx->state[i]);
c6580eb8 AKR	333
	334	/* Wipe context */
	335	memset(rctx, 0, sizeof(*rctx));
	336	}
	337
	338	static struct crypto_alg alg = {
	339	.cra_name = "rmd160",
	340	.cra_driver_name = "rmd160",
	341	.cra_flags = CRYPTO_ALG_TYPE_DIGEST,
	342	.cra_blocksize = RMD160_BLOCK_SIZE,
	343	.cra_ctxsize = sizeof(struct rmd160_ctx),
	344	.cra_module = THIS_MODULE,
	345	.cra_list = LIST_HEAD_INIT(alg.cra_list),
	346	.cra_u = { .digest = {
	347	.dia_digestsize = RMD160_DIGEST_SIZE,
	348	.dia_init = rmd160_init,
	349	.dia_update = rmd160_update,
	350	.dia_final = rmd160_final } }
	351	};
	352
	353	static int __init rmd160_mod_init(void)
	354	{
	355	return crypto_register_alg(&alg);
	356	}
	357
	358	static void __exit rmd160_mod_fini(void)
	359	{
	360	crypto_unregister_alg(&alg);
	361	}
	362
	363	module_init(rmd160_mod_init);
	364	module_exit(rmd160_mod_fini);
	365
	366	MODULE_LICENSE("GPL");
	367	MODULE_DESCRIPTION("RIPEMD-160 Message Digest");
	368
	369	MODULE_ALIAS("rmd160");