[deliverable/linux.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 <ken@codelabs.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 <crypto/internal/hash.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/mm.h>
#include <linux/types.h>
#include <asm/byteorder.h>

#include "ripemd.h"

struct rmd160_ctx {
	u64 byte_count;
	u32 state[5];
	__le32 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_cpup(&(x)) + (k); \
	(a) = rol32((a), (s)) + (e); \
	(c) = rol32((c), 10); \
}

static void rmd160_transform(u32 *state, const __le32 *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 int rmd160_init(struct shash_desc *desc)
{
	struct rmd160_ctx *rctx = shash_desc_ctx(desc);

	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));

	return 0;
}

static int rmd160_update(struct shash_desc *desc, const u8 *data,
			 unsigned int len)
{
	struct rmd160_ctx *rctx = shash_desc_ctx(desc);
	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);
		goto out;
	}

	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);

out:
	return 0;
}

/* Add padding and return the message digest. */
static int rmd160_final(struct shash_desc *desc, u8 *out)
{
	struct rmd160_ctx *rctx = shash_desc_ctx(desc);
	u32 i, index, padlen;
	__le64 bits;
	__le32 *dst = (__le32 *)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(desc, padding, padlen);

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

	/* Store state in digest */
	for (i = 0; i < 5; i++)
		dst[i] = cpu_to_le32p(&rctx->state[i]);

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

	return 0;
}

static struct shash_alg alg = {
	.digestsize	=	RMD160_DIGEST_SIZE,
	.init		=	rmd160_init,
	.update		=	rmd160_update,
	.final		=	rmd160_final,
	.descsize	=	sizeof(struct rmd160_ctx),
	.base		=	{
		.cra_name	 =	"rmd160",
		.cra_flags	 =	CRYPTO_ALG_TYPE_SHASH,
		.cra_blocksize	 =	RMD160_BLOCK_SIZE,
		.cra_module	 =	THIS_MODULE,
	}
};

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

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

module_init(rmd160_mod_init);
module_exit(rmd160_mod_fini);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Adrian-Ken Rueegsegger <ken@codelabs.ch>");
MODULE_DESCRIPTION("RIPEMD-160 Message Digest");
MODULE_ALIAS_CRYPTO("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	*
3181c225	8	* Copyright (c) 2008 Adrian-Ken Rueegsegger <ken@codelabs.ch>
c6580eb8 AKR	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	*/
e5835fba	16	#include <crypto/internal/hash.h>
c6580eb8 AKR	17	#include <linux/init.h>
	18	#include <linux/module.h>
	19	#include <linux/mm.h>
c6580eb8 AKR	20	#include <linux/types.h>
	21	#include <asm/byteorder.h>
	22
	23	#include "ripemd.h"
	24
	25	struct rmd160_ctx {
	26	u64 byte_count;
	27	u32 state[5];
caee1688	28	__le32 buffer[16];
c6580eb8 AKR	29	};
c6580eb8 AKR	30
ba6b0398 AKR	31	#define K1 RMD_K1
	32	#define K2 RMD_K2
	33	#define K3 RMD_K3
	34	#define K4 RMD_K4
	35	#define K5 RMD_K5
	36	#define KK1 RMD_K6
	37	#define KK2 RMD_K7
	38	#define KK3 RMD_K8
	39	#define KK4 RMD_K9
	40	#define KK5 RMD_K1
c6580eb8 AKR	41
	42	#define F1(x, y, z) (x ^ y ^ z) /* XOR */
	43	#define F2(x, y, z) (z ^ (x & (y ^ z))) /* x ? y : z */
	44	#define F3(x, y, z) ((x \| ~y) ^ z)
	45	#define F4(x, y, z) (y ^ (z & (x ^ y))) /* z ? x : y */
	46	#define F5(x, y, z) (x ^ (y \| ~z))
	47
	48	#define ROUND(a, b, c, d, e, f, k, x, s) { \
5cdcc22f	49	(a) += f((b), (c), (d)) + le32_to_cpup(&(x)) + (k); \
c6580eb8 AKR	50	(a) = rol32((a), (s)) + (e); \
	51	(c) = rol32((c), 10); \
	52	}
	53
caee1688	54	static void rmd160_transform(u32 state, const __le32 in)
c6580eb8 AKR	55	{
	56	u32 aa, bb, cc, dd, ee, aaa, bbb, ccc, ddd, eee;
	57
	58	/* Initialize left lane */
	59	aa = state[0];
	60	bb = state[1];
	61	cc = state[2];
	62	dd = state[3];
	63	ee = state[4];
	64
	65	/* Initialize right lane */
	66	aaa = state[0];
	67	bbb = state[1];
	68	ccc = state[2];
	69	ddd = state[3];
	70	eee = state[4];
	71
	72	/* round 1: left lane */
	73	ROUND(aa, bb, cc, dd, ee, F1, K1, in[0], 11);
	74	ROUND(ee, aa, bb, cc, dd, F1, K1, in[1], 14);
	75	ROUND(dd, ee, aa, bb, cc, F1, K1, in[2], 15);
	76	ROUND(cc, dd, ee, aa, bb, F1, K1, in[3], 12);
	77	ROUND(bb, cc, dd, ee, aa, F1, K1, in[4], 5);
	78	ROUND(aa, bb, cc, dd, ee, F1, K1, in[5], 8);
	79	ROUND(ee, aa, bb, cc, dd, F1, K1, in[6], 7);
	80	ROUND(dd, ee, aa, bb, cc, F1, K1, in[7], 9);
	81	ROUND(cc, dd, ee, aa, bb, F1, K1, in[8], 11);
	82	ROUND(bb, cc, dd, ee, aa, F1, K1, in[9], 13);
	83	ROUND(aa, bb, cc, dd, ee, F1, K1, in[10], 14);
	84	ROUND(ee, aa, bb, cc, dd, F1, K1, in[11], 15);
	85	ROUND(dd, ee, aa, bb, cc, F1, K1, in[12], 6);
	86	ROUND(cc, dd, ee, aa, bb, F1, K1, in[13], 7);
	87	ROUND(bb, cc, dd, ee, aa, F1, K1, in[14], 9);
	88	ROUND(aa, bb, cc, dd, ee, F1, K1, in[15], 8);
	89
	90	/* round 2: left lane" */
	91	ROUND(ee, aa, bb, cc, dd, F2, K2, in[7], 7);
	92	ROUND(dd, ee, aa, bb, cc, F2, K2, in[4], 6);
	93	ROUND(cc, dd, ee, aa, bb, F2, K2, in[13], 8);
	94	ROUND(bb, cc, dd, ee, aa, F2, K2, in[1], 13);
	95	ROUND(aa, bb, cc, dd, ee, F2, K2, in[10], 11);
	96	ROUND(ee, aa, bb, cc, dd, F2, K2, in[6], 9);
	97	ROUND(dd, ee, aa, bb, cc, F2, K2, in[15], 7);
	98	ROUND(cc, dd, ee, aa, bb, F2, K2, in[3], 15);
	99	ROUND(bb, cc, dd, ee, aa, F2, K2, in[12], 7);
	100	ROUND(aa, bb, cc, dd, ee, F2, K2, in[0], 12);
	101	ROUND(ee, aa, bb, cc, dd, F2, K2, in[9], 15);
	102	ROUND(dd, ee, aa, bb, cc, F2, K2, in[5], 9);
	103	ROUND(cc, dd, ee, aa, bb, F2, K2, in[2], 11);
	104	ROUND(bb, cc, dd, ee, aa, F2, K2, in[14], 7);
	105	ROUND(aa, bb, cc, dd, ee, F2, K2, in[11], 13);
	106	ROUND(ee, aa, bb, cc, dd, F2, K2, in[8], 12);
	107
	108	/* round 3: left lane" */
	109	ROUND(dd, ee, aa, bb, cc, F3, K3, in[3], 11);
	110	ROUND(cc, dd, ee, aa, bb, F3, K3, in[10], 13);
	111	ROUND(bb, cc, dd, ee, aa, F3, K3, in[14], 6);
	112	ROUND(aa, bb, cc, dd, ee, F3, K3, in[4], 7);
	113	ROUND(ee, aa, bb, cc, dd, F3, K3, in[9], 14);
	114	ROUND(dd, ee, aa, bb, cc, F3, K3, in[15], 9);
	115	ROUND(cc, dd, ee, aa, bb, F3, K3, in[8], 13);
	116	ROUND(bb, cc, dd, ee, aa, F3, K3, in[1], 15);
	117	ROUND(aa, bb, cc, dd, ee, F3, K3, in[2], 14);
	118	ROUND(ee, aa, bb, cc, dd, F3, K3, in[7], 8);
119	ROUND(dd, ee, aa, bb, cc, F3, K3, in[0], 13);
120	ROUND(cc, dd, ee, aa, bb, F3, K3, in[6], 6);
121	ROUND(bb, cc, dd, ee, aa, F3, K3, in[13], 5);
122	ROUND(aa, bb, cc, dd, ee, F3, K3, in[11], 12);
123	ROUND(ee, aa, bb, cc, dd, F3, K3, in[5], 7);
124	ROUND(dd, ee, aa, bb, cc, F3, K3, in[12], 5);
125
126	/* round 4: left lane" */
127	ROUND(cc, dd, ee, aa, bb, F4, K4, in[1], 11);
128	ROUND(bb, cc, dd, ee, aa, F4, K4, in[9], 12);
129	ROUND(aa, bb, cc, dd, ee, F4, K4, in[11], 14);
130	ROUND(ee, aa, bb, cc, dd, F4, K4, in[10], 15);
131	ROUND(dd, ee, aa, bb, cc, F4, K4, in[0], 14);
132	ROUND(cc, dd, ee, aa, bb, F4, K4, in[8], 15);
133	ROUND(bb, cc, dd, ee, aa, F4, K4, in[12], 9);
134	ROUND(aa, bb, cc, dd, ee, F4, K4, in[4], 8);
135	ROUND(ee, aa, bb, cc, dd, F4, K4, in[13], 9);
136	ROUND(dd, ee, aa, bb, cc, F4, K4, in[3], 14);
137	ROUND(cc, dd, ee, aa, bb, F4, K4, in[7], 5);
138	ROUND(bb, cc, dd, ee, aa, F4, K4, in[15], 6);
139	ROUND(aa, bb, cc, dd, ee, F4, K4, in[14], 8);
140	ROUND(ee, aa, bb, cc, dd, F4, K4, in[5], 6);
141	ROUND(dd, ee, aa, bb, cc, F4, K4, in[6], 5);
142	ROUND(cc, dd, ee, aa, bb, F4, K4, in[2], 12);
143
144	/* round 5: left lane" */
145	ROUND(bb, cc, dd, ee, aa, F5, K5, in[4], 9);
146	ROUND(aa, bb, cc, dd, ee, F5, K5, in[0], 15);
147	ROUND(ee, aa, bb, cc, dd, F5, K5, in[5], 5);
148	ROUND(dd, ee, aa, bb, cc, F5, K5, in[9], 11);
149	ROUND(cc, dd, ee, aa, bb, F5, K5, in[7], 6);
150	ROUND(bb, cc, dd, ee, aa, F5, K5, in[12], 8);
151	ROUND(aa, bb, cc, dd, ee, F5, K5, in[2], 13);
152	ROUND(ee, aa, bb, cc, dd, F5, K5, in[10], 12);
153	ROUND(dd, ee, aa, bb, cc, F5, K5, in[14], 5);
154	ROUND(cc, dd, ee, aa, bb, F5, K5, in[1], 12);
155	ROUND(bb, cc, dd, ee, aa, F5, K5, in[3], 13);
156	ROUND(aa, bb, cc, dd, ee, F5, K5, in[8], 14);
157	ROUND(ee, aa, bb, cc, dd, F5, K5, in[11], 11);
158	ROUND(dd, ee, aa, bb, cc, F5, K5, in[6], 8);
159	ROUND(cc, dd, ee, aa, bb, F5, K5, in[15], 5);
160	ROUND(bb, cc, dd, ee, aa, F5, K5, in[13], 6);
161
162	/* round 1: right lane */
163	ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[5], 8);
164	ROUND(eee, aaa, bbb, ccc, ddd, F5, KK1, in[14], 9);
165	ROUND(ddd, eee, aaa, bbb, ccc, F5, KK1, in[7], 9);
166	ROUND(ccc, ddd, eee, aaa, bbb, F5, KK1, in[0], 11);
167	ROUND(bbb, ccc, ddd, eee, aaa, F5, KK1, in[9], 13);
168	ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[2], 15);
169	ROUND(eee, aaa, bbb, ccc, ddd, F5, KK1, in[11], 15);
170	ROUND(ddd, eee, aaa, bbb, ccc, F5, KK1, in[4], 5);
171	ROUND(ccc, ddd, eee, aaa, bbb, F5, KK1, in[13], 7);
172	ROUND(bbb, ccc, ddd, eee, aaa, F5, KK1, in[6], 7);
173	ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[15], 8);
174	ROUND(eee, aaa, bbb, ccc, ddd, F5, KK1, in[8], 11);
175	ROUND(ddd, eee, aaa, bbb, ccc, F5, KK1, in[1], 14);
176	ROUND(ccc, ddd, eee, aaa, bbb, F5, KK1, in[10], 14);
177	ROUND(bbb, ccc, ddd, eee, aaa, F5, KK1, in[3], 12);
178	ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[12], 6);
179
180	/* round 2: right lane */
181	ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[6], 9);
182	ROUND(ddd, eee, aaa, bbb, ccc, F4, KK2, in[11], 13);
183	ROUND(ccc, ddd, eee, aaa, bbb, F4, KK2, in[3], 15);
184	ROUND(bbb, ccc, ddd, eee, aaa, F4, KK2, in[7], 7);
185	ROUND(aaa, bbb, ccc, ddd, eee, F4, KK2, in[0], 12);
186	ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[13], 8);
187	ROUND(ddd, eee, aaa, bbb, ccc, F4, KK2, in[5], 9);
188	ROUND(ccc, ddd, eee, aaa, bbb, F4, KK2, in[10], 11);
189	ROUND(bbb, ccc, ddd, eee, aaa, F4, KK2, in[14], 7);
190	ROUND(aaa, bbb, ccc, ddd, eee, F4, KK2, in[15], 7);
191	ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[8], 12);
192	ROUND(ddd, eee, aaa, bbb, ccc, F4, KK2, in[12], 7);
193	ROUND(ccc, ddd, eee, aaa, bbb, F4, KK2, in[4], 6);
194	ROUND(bbb, ccc, ddd, eee, aaa, F4, KK2, in[9], 15);
195	ROUND(aaa, bbb, ccc, ddd, eee, F4, KK2, in[1], 13);
196	ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[2], 11);
197
198	/* round 3: right lane */
199	ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[15], 9);
200	ROUND(ccc, ddd, eee, aaa, bbb, F3, KK3, in[5], 7);
201	ROUND(bbb, ccc, ddd, eee, aaa, F3, KK3, in[1], 15);
202	ROUND(aaa, bbb, ccc, ddd, eee, F3, KK3, in[3], 11);
203	ROUND(eee, aaa, bbb, ccc, ddd, F3, KK3, in[7], 8);
204	ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[14], 6);
205	ROUND(ccc, ddd, eee, aaa, bbb, F3, KK3, in[6], 6);
206	ROUND(bbb, ccc, ddd, eee, aaa, F3, KK3, in[9], 14);
207	ROUND(aaa, bbb, ccc, ddd, eee, F3, KK3, in[11], 12);
208	ROUND(eee, aaa, bbb, ccc, ddd, F3, KK3, in[8], 13);
209	ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[12], 5);
210	ROUND(ccc, ddd, eee, aaa, bbb, F3, KK3, in[2], 14);
211	ROUND(bbb, ccc, ddd, eee, aaa, F3, KK3, in[10], 13);
212	ROUND(aaa, bbb, ccc, ddd, eee, F3, KK3, in[0], 13);
213	ROUND(eee, aaa, bbb, ccc, ddd, F3, KK3, in[4], 7);
214	ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[13], 5);
215
216	/* round 4: right lane */
217	ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[8], 15);
218	ROUND(bbb, ccc, ddd, eee, aaa, F2, KK4, in[6], 5);
219	ROUND(aaa, bbb, ccc, ddd, eee, F2, KK4, in[4], 8);
220	ROUND(eee, aaa, bbb, ccc, ddd, F2, KK4, in[1], 11);
221	ROUND(ddd, eee, aaa, bbb, ccc, F2, KK4, in[3], 14);
222	ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[11], 14);
223	ROUND(bbb, ccc, ddd, eee, aaa, F2, KK4, in[15], 6);
224	ROUND(aaa, bbb, ccc, ddd, eee, F2, KK4, in[0], 14);
225	ROUND(eee, aaa, bbb, ccc, ddd, F2, KK4, in[5], 6);
226	ROUND(ddd, eee, aaa, bbb, ccc, F2, KK4, in[12], 9);
227	ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[2], 12);
228	ROUND(bbb, ccc, ddd, eee, aaa, F2, KK4, in[13], 9);
229	ROUND(aaa, bbb, ccc, ddd, eee, F2, KK4, in[9], 12);
230	ROUND(eee, aaa, bbb, ccc, ddd, F2, KK4, in[7], 5);
231	ROUND(ddd, eee, aaa, bbb, ccc, F2, KK4, in[10], 15);
232	ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[14], 8);
233
234	/* round 5: right lane */
235	ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[12], 8);
236	ROUND(aaa, bbb, ccc, ddd, eee, F1, KK5, in[15], 5);
237	ROUND(eee, aaa, bbb, ccc, ddd, F1, KK5, in[10], 12);
238	ROUND(ddd, eee, aaa, bbb, ccc, F1, KK5, in[4], 9);
239	ROUND(ccc, ddd, eee, aaa, bbb, F1, KK5, in[1], 12);
240	ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[5], 5);
241	ROUND(aaa, bbb, ccc, ddd, eee, F1, KK5, in[8], 14);
242	ROUND(eee, aaa, bbb, ccc, ddd, F1, KK5, in[7], 6);
243	ROUND(ddd, eee, aaa, bbb, ccc, F1, KK5, in[6], 8);
244	ROUND(ccc, ddd, eee, aaa, bbb, F1, KK5, in[2], 13);
245	ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[13], 6);
246	ROUND(aaa, bbb, ccc, ddd, eee, F1, KK5, in[14], 5);
247	ROUND(eee, aaa, bbb, ccc, ddd, F1, KK5, in[0], 15);
248	ROUND(ddd, eee, aaa, bbb, ccc, F1, KK5, in[3], 13);
249	ROUND(ccc, ddd, eee, aaa, bbb, F1, KK5, in[9], 11);
250	ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[11], 11);
251
252	/* combine results */
253	ddd += cc + state[1]; /* final result for state[0] */
254	state[1] = state[2] + dd + eee;
255	state[2] = state[3] + ee + aaa;
256	state[3] = state[4] + aa + bbb;
257	state[4] = state[0] + bb + ccc;
258	state[0] = ddd;
259
260	return;
261	}
262
e5835fba	263	static int rmd160_init(struct shash_desc *desc)
c6580eb8	264	{
e5835fba	265	struct rmd160_ctx *rctx = shash_desc_ctx(desc);
c6580eb8 AKR	266
	267	rctx->byte_count = 0;
	268
	269	rctx->state[0] = RMD_H0;
	270	rctx->state[1] = RMD_H1;
	271	rctx->state[2] = RMD_H2;
	272	rctx->state[3] = RMD_H3;
	273	rctx->state[4] = RMD_H4;
	274
	275	memset(rctx->buffer, 0, sizeof(rctx->buffer));
e5835fba HX	276
e5835fba HX	277	return 0;
c6580eb8 AKR	278	}
c6580eb8 AKR	279
e5835fba HX	280	static int rmd160_update(struct shash_desc desc, const u8 data,
e5835fba HX	281	unsigned int len)
c6580eb8	282	{
e5835fba	283	struct rmd160_ctx *rctx = shash_desc_ctx(desc);
c6580eb8 AKR	284	const u32 avail = sizeof(rctx->buffer) - (rctx->byte_count & 0x3f);
	285
	286	rctx->byte_count += len;
	287
	288	/* Enough space in buffer? If so copy and we're done */
	289	if (avail > len) {
	290	memcpy((char *)rctx->buffer + (sizeof(rctx->buffer) - avail),
	291	data, len);
e5835fba	292	goto out;
c6580eb8 AKR	293	}
	294
	295	memcpy((char *)rctx->buffer + (sizeof(rctx->buffer) - avail),
	296	data, avail);
	297
c928a0cd	298	rmd160_transform(rctx->state, rctx->buffer);
c6580eb8 AKR	299	data += avail;
	300	len -= avail;
	301
	302	while (len >= sizeof(rctx->buffer)) {
	303	memcpy(rctx->buffer, data, sizeof(rctx->buffer));
c928a0cd	304	rmd160_transform(rctx->state, rctx->buffer);
c6580eb8 AKR	305	data += sizeof(rctx->buffer);
	306	len -= sizeof(rctx->buffer);
	307	}
	308
	309	memcpy(rctx->buffer, data, len);
e5835fba HX	310
	311	out:
	312	return 0;
c6580eb8 AKR	313	}
	314
	315	/* Add padding and return the message digest. */
e5835fba	316	static int rmd160_final(struct shash_desc desc, u8 out)
c6580eb8	317	{
e5835fba	318	struct rmd160_ctx *rctx = shash_desc_ctx(desc);
c928a0cd	319	u32 i, index, padlen;
caee1688 HH	320	__le64 bits;
caee1688 HH	321	__le32 dst = (__le32 )out;
c6580eb8	322	static const u8 padding[64] = { 0x80, };
c928a0cd AKR	323
c928a0cd AKR	324	bits = cpu_to_le64(rctx->byte_count << 3);
c6580eb8 AKR	325
	326	/* Pad out to 56 mod 64 */
	327	index = rctx->byte_count & 0x3f;
	328	padlen = (index < 56) ? (56 - index) : ((64+56) - index);
e5835fba	329	rmd160_update(desc, padding, padlen);
c6580eb8 AKR	330
c6580eb8 AKR	331	/* Append length */
e5835fba	332	rmd160_update(desc, (const u8 *)&bits, sizeof(bits));
c6580eb8 AKR	333
c6580eb8 AKR	334	/* Store state in digest */
c928a0cd	335	for (i = 0; i < 5; i++)
5cdcc22f	336	dst[i] = cpu_to_le32p(&rctx->state[i]);
c6580eb8 AKR	337
	338	/* Wipe context */
	339	memset(rctx, 0, sizeof(*rctx));
e5835fba HX	340
e5835fba HX	341	return 0;
c6580eb8 AKR	342	}
c6580eb8 AKR	343
e5835fba HX	344	static struct shash_alg alg = {
	345	.digestsize = RMD160_DIGEST_SIZE,
	346	.init = rmd160_init,
	347	.update = rmd160_update,
	348	.final = rmd160_final,
	349	.descsize = sizeof(struct rmd160_ctx),
	350	.base = {
	351	.cra_name = "rmd160",
	352	.cra_flags = CRYPTO_ALG_TYPE_SHASH,
	353	.cra_blocksize = RMD160_BLOCK_SIZE,
	354	.cra_module = THIS_MODULE,
	355	}
c6580eb8 AKR	356	};
	357
	358	static int __init rmd160_mod_init(void)
	359	{
e5835fba	360	return crypto_register_shash(&alg);
c6580eb8 AKR	361	}
	362
	363	static void __exit rmd160_mod_fini(void)
	364	{
e5835fba	365	crypto_unregister_shash(&alg);
c6580eb8 AKR	366	}
	367
	368	module_init(rmd160_mod_init);
	369	module_exit(rmd160_mod_fini);
	370
	371	MODULE_LICENSE("GPL");
3181c225	372	MODULE_AUTHOR("Adrian-Ken Rueegsegger <ken@codelabs.ch>");
c6580eb8	373	MODULE_DESCRIPTION("RIPEMD-160 Message Digest");
5d26a105	374	MODULE_ALIAS_CRYPTO("rmd160");