[linux.git] / crypto / rmd320.c

/*
 * Cryptographic API.
 *
 * RIPEMD-320 - RACE Integrity Primitives Evaluation Message Digest.
 *
 * Based on the reference implementation by Antoon Bosselaers, ESAT-COSIC
 *
 * Copyright (c) 2008 Adrian-Ken Rueegsegger <[email protected]>
 *
 * 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 rmd320_ctx {
	u64 byte_count;
	u32 state[10];
	__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 rmd320_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[5];
	bbb = state[6];
	ccc = state[7];
	ddd = state[8];
	eee = state[9];

	/* 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 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);

	/* Swap contents of "a" registers */
	swap(aa, aaa);

	/* 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 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);

	/* Swap contents of "b" registers */
	swap(bb, bbb);

	/* 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 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);

	/* Swap contents of "c" registers */
	swap(cc, ccc);

	/* 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 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);

	/* Swap contents of "d" registers */
	swap(dd, ddd);

	/* 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 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);

	/* Swap contents of "e" registers */
	swap(ee, eee);

	/* combine results */
	state[0] += aa;
	state[1] += bb;
	state[2] += cc;
	state[3] += dd;
	state[4] += ee;
	state[5] += aaa;
	state[6] += bbb;
	state[7] += ccc;
	state[8] += ddd;
	state[9] += eee;
}

static int rmd320_init(struct shash_desc *desc)
{
	struct rmd320_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;
	rctx->state[5] = RMD_H5;
	rctx->state[6] = RMD_H6;
	rctx->state[7] = RMD_H7;
	rctx->state[8] = RMD_H8;
	rctx->state[9] = RMD_H9;

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

	return 0;
}

static int rmd320_update(struct shash_desc *desc, const u8 *data,
			 unsigned int len)
{
	struct rmd320_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);

	rmd320_transform(rctx->state, rctx->buffer);
	data += avail;
	len -= avail;

	while (len >= sizeof(rctx->buffer)) {
		memcpy(rctx->buffer, data, sizeof(rctx->buffer));
		rmd320_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 rmd320_final(struct shash_desc *desc, u8 *out)
{
	struct rmd320_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);
	rmd320_update(desc, padding, padlen);

	/* Append length */
	rmd320_update(desc, (const u8 *)&bits, sizeof(bits));

	/* Store state in digest */
	for (i = 0; i < 10; i++)
		dst[i] = cpu_to_le32p(&rctx->state[i]);

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

	return 0;
}

static struct shash_alg alg = {
	.digestsize	=	RMD320_DIGEST_SIZE,
	.init		=	rmd320_init,
	.update		=	rmd320_update,
	.final		=	rmd320_final,
	.descsize	=	sizeof(struct rmd320_ctx),
	.base		=	{
		.cra_name	 =	"rmd320",
		.cra_blocksize	 =	RMD320_BLOCK_SIZE,
		.cra_module	 =	THIS_MODULE,
	}
};

static int __init rmd320_mod_init(void)
{
	return crypto_register_shash(&alg);
}

static void __exit rmd320_mod_fini(void)
{
	crypto_unregister_shash(&alg);
}

module_init(rmd320_mod_init);
module_exit(rmd320_mod_fini);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Adrian-Ken Rueegsegger <[email protected]>");
MODULE_DESCRIPTION("RIPEMD-320 Message Digest");
MODULE_ALIAS_CRYPTO("rmd320");
Commit	Line	Data
c555c28d AKR	1	/*
	2	* Cryptographic API.
	3	*
	4	* RIPEMD-320 - 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 <[email protected]>
c555c28d 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	*/
3b8efb4c	16	#include <crypto/internal/hash.h>
c555c28d AKR	17	#include <linux/init.h>
	18	#include <linux/module.h>
	19	#include <linux/mm.h>
c555c28d AKR	20	#include <linux/types.h>
	21	#include <asm/byteorder.h>
	22
	23	#include "ripemd.h"
	24
	25	struct rmd320_ctx {
	26	u64 byte_count;
	27	u32 state[10];
caee1688	28	__le32 buffer[16];
c555c28d AKR	29	};
	30
	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
	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); \
c555c28d AKR	50	(a) = rol32((a), (s)) + (e); \
	51	(c) = rol32((c), 10); \
	52	}
	53
caee1688	54	static void rmd320_transform(u32 state, const __le32 in)
c555c28d	55	{
a4789089	56	u32 aa, bb, cc, dd, ee, aaa, bbb, ccc, ddd, eee;
c555c28d AKR	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[5];
	67	bbb = state[6];
	68	ccc = state[7];
	69	ddd = state[8];
	70	eee = state[9];
	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 1: right lane */
	91	ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[5], 8);
	92	ROUND(eee, aaa, bbb, ccc, ddd, F5, KK1, in[14], 9);
	93	ROUND(ddd, eee, aaa, bbb, ccc, F5, KK1, in[7], 9);
	94	ROUND(ccc, ddd, eee, aaa, bbb, F5, KK1, in[0], 11);
	95	ROUND(bbb, ccc, ddd, eee, aaa, F5, KK1, in[9], 13);
	96	ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[2], 15);
	97	ROUND(eee, aaa, bbb, ccc, ddd, F5, KK1, in[11], 15);
	98	ROUND(ddd, eee, aaa, bbb, ccc, F5, KK1, in[4], 5);
	99	ROUND(ccc, ddd, eee, aaa, bbb, F5, KK1, in[13], 7);
	100	ROUND(bbb, ccc, ddd, eee, aaa, F5, KK1, in[6], 7);
	101	ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[15], 8);
	102	ROUND(eee, aaa, bbb, ccc, ddd, F5, KK1, in[8], 11);
	103	ROUND(ddd, eee, aaa, bbb, ccc, F5, KK1, in[1], 14);
	104	ROUND(ccc, ddd, eee, aaa, bbb, F5, KK1, in[10], 14);
	105	ROUND(bbb, ccc, ddd, eee, aaa, F5, KK1, in[3], 12);
	106	ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[12], 6);
	107
	108	/* Swap contents of "a" registers */
a4789089	109	swap(aa, aaa);
c555c28d AKR	110
	111	/* round 2: left lane" */
	112	ROUND(ee, aa, bb, cc, dd, F2, K2, in[7], 7);
	113	ROUND(dd, ee, aa, bb, cc, F2, K2, in[4], 6);
	114	ROUND(cc, dd, ee, aa, bb, F2, K2, in[13], 8);
	115	ROUND(bb, cc, dd, ee, aa, F2, K2, in[1], 13);
	116	ROUND(aa, bb, cc, dd, ee, F2, K2, in[10], 11);
	117	ROUND(ee, aa, bb, cc, dd, F2, K2, in[6], 9);
	118	ROUND(dd, ee, aa, bb, cc, F2, K2, in[15], 7);
	119	ROUND(cc, dd, ee, aa, bb, F2, K2, in[3], 15);
	120	ROUND(bb, cc, dd, ee, aa, F2, K2, in[12], 7);
	121	ROUND(aa, bb, cc, dd, ee, F2, K2, in[0], 12);
	122	ROUND(ee, aa, bb, cc, dd, F2, K2, in[9], 15);
	123	ROUND(dd, ee, aa, bb, cc, F2, K2, in[5], 9);
	124	ROUND(cc, dd, ee, aa, bb, F2, K2, in[2], 11);
	125	ROUND(bb, cc, dd, ee, aa, F2, K2, in[14], 7);
	126	ROUND(aa, bb, cc, dd, ee, F2, K2, in[11], 13);
	127	ROUND(ee, aa, bb, cc, dd, F2, K2, in[8], 12);
	128
	129	/* round 2: right lane */
	130	ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[6], 9);
	131	ROUND(ddd, eee, aaa, bbb, ccc, F4, KK2, in[11], 13);
	132	ROUND(ccc, ddd, eee, aaa, bbb, F4, KK2, in[3], 15);
	133	ROUND(bbb, ccc, ddd, eee, aaa, F4, KK2, in[7], 7);
	134	ROUND(aaa, bbb, ccc, ddd, eee, F4, KK2, in[0], 12);
	135	ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[13], 8);
	136	ROUND(ddd, eee, aaa, bbb, ccc, F4, KK2, in[5], 9);
	137	ROUND(ccc, ddd, eee, aaa, bbb, F4, KK2, in[10], 11);
	138	ROUND(bbb, ccc, ddd, eee, aaa, F4, KK2, in[14], 7);
	139	ROUND(aaa, bbb, ccc, ddd, eee, F4, KK2, in[15], 7);
	140	ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[8], 12);
	141	ROUND(ddd, eee, aaa, bbb, ccc, F4, KK2, in[12], 7);
	142	ROUND(ccc, ddd, eee, aaa, bbb, F4, KK2, in[4], 6);
	143	ROUND(bbb, ccc, ddd, eee, aaa, F4, KK2, in[9], 15);
	144	ROUND(aaa, bbb, ccc, ddd, eee, F4, KK2, in[1], 13);
	145	ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[2], 11);
	146
	147	/* Swap contents of "b" registers */
a4789089	148	swap(bb, bbb);
c555c28d AKR	149
	150	/* round 3: left lane" */
	151	ROUND(dd, ee, aa, bb, cc, F3, K3, in[3], 11);
	152	ROUND(cc, dd, ee, aa, bb, F3, K3, in[10], 13);
	153	ROUND(bb, cc, dd, ee, aa, F3, K3, in[14], 6);
	154	ROUND(aa, bb, cc, dd, ee, F3, K3, in[4], 7);
	155	ROUND(ee, aa, bb, cc, dd, F3, K3, in[9], 14);
	156	ROUND(dd, ee, aa, bb, cc, F3, K3, in[15], 9);
	157	ROUND(cc, dd, ee, aa, bb, F3, K3, in[8], 13);
	158	ROUND(bb, cc, dd, ee, aa, F3, K3, in[1], 15);
	159	ROUND(aa, bb, cc, dd, ee, F3, K3, in[2], 14);
	160	ROUND(ee, aa, bb, cc, dd, F3, K3, in[7], 8);
	161	ROUND(dd, ee, aa, bb, cc, F3, K3, in[0], 13);
	162	ROUND(cc, dd, ee, aa, bb, F3, K3, in[6], 6);
	163	ROUND(bb, cc, dd, ee, aa, F3, K3, in[13], 5);
	164	ROUND(aa, bb, cc, dd, ee, F3, K3, in[11], 12);
	165	ROUND(ee, aa, bb, cc, dd, F3, K3, in[5], 7);
	166	ROUND(dd, ee, aa, bb, cc, F3, K3, in[12], 5);
	167
	168	/* round 3: right lane */
	169	ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[15], 9);
	170	ROUND(ccc, ddd, eee, aaa, bbb, F3, KK3, in[5], 7);
	171	ROUND(bbb, ccc, ddd, eee, aaa, F3, KK3, in[1], 15);
	172	ROUND(aaa, bbb, ccc, ddd, eee, F3, KK3, in[3], 11);
	173	ROUND(eee, aaa, bbb, ccc, ddd, F3, KK3, in[7], 8);
	174	ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[14], 6);
	175	ROUND(ccc, ddd, eee, aaa, bbb, F3, KK3, in[6], 6);
	176	ROUND(bbb, ccc, ddd, eee, aaa, F3, KK3, in[9], 14);
	177	ROUND(aaa, bbb, ccc, ddd, eee, F3, KK3, in[11], 12);
	178	ROUND(eee, aaa, bbb, ccc, ddd, F3, KK3, in[8], 13);
	179	ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[12], 5);
	180	ROUND(ccc, ddd, eee, aaa, bbb, F3, KK3, in[2], 14);
	181	ROUND(bbb, ccc, ddd, eee, aaa, F3, KK3, in[10], 13);
	182	ROUND(aaa, bbb, ccc, ddd, eee, F3, KK3, in[0], 13);
	183	ROUND(eee, aaa, bbb, ccc, ddd, F3, KK3, in[4], 7);
	184	ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[13], 5);
	185
	186	/* Swap contents of "c" registers */
a4789089	187	swap(cc, ccc);
c555c28d AKR	188
	189	/* round 4: left lane" */
	190	ROUND(cc, dd, ee, aa, bb, F4, K4, in[1], 11);
	191	ROUND(bb, cc, dd, ee, aa, F4, K4, in[9], 12);
	192	ROUND(aa, bb, cc, dd, ee, F4, K4, in[11], 14);
	193	ROUND(ee, aa, bb, cc, dd, F4, K4, in[10], 15);
	194	ROUND(dd, ee, aa, bb, cc, F4, K4, in[0], 14);
	195	ROUND(cc, dd, ee, aa, bb, F4, K4, in[8], 15);
	196	ROUND(bb, cc, dd, ee, aa, F4, K4, in[12], 9);
	197	ROUND(aa, bb, cc, dd, ee, F4, K4, in[4], 8);
	198	ROUND(ee, aa, bb, cc, dd, F4, K4, in[13], 9);
	199	ROUND(dd, ee, aa, bb, cc, F4, K4, in[3], 14);
	200	ROUND(cc, dd, ee, aa, bb, F4, K4, in[7], 5);
	201	ROUND(bb, cc, dd, ee, aa, F4, K4, in[15], 6);
	202	ROUND(aa, bb, cc, dd, ee, F4, K4, in[14], 8);
	203	ROUND(ee, aa, bb, cc, dd, F4, K4, in[5], 6);
	204	ROUND(dd, ee, aa, bb, cc, F4, K4, in[6], 5);
	205	ROUND(cc, dd, ee, aa, bb, F4, K4, in[2], 12);
	206
	207	/* round 4: right lane */
	208	ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[8], 15);
	209	ROUND(bbb, ccc, ddd, eee, aaa, F2, KK4, in[6], 5);
	210	ROUND(aaa, bbb, ccc, ddd, eee, F2, KK4, in[4], 8);
	211	ROUND(eee, aaa, bbb, ccc, ddd, F2, KK4, in[1], 11);
	212	ROUND(ddd, eee, aaa, bbb, ccc, F2, KK4, in[3], 14);
	213	ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[11], 14);
	214	ROUND(bbb, ccc, ddd, eee, aaa, F2, KK4, in[15], 6);
	215	ROUND(aaa, bbb, ccc, ddd, eee, F2, KK4, in[0], 14);
	216	ROUND(eee, aaa, bbb, ccc, ddd, F2, KK4, in[5], 6);
	217	ROUND(ddd, eee, aaa, bbb, ccc, F2, KK4, in[12], 9);
	218	ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[2], 12);
	219	ROUND(bbb, ccc, ddd, eee, aaa, F2, KK4, in[13], 9);
	220	ROUND(aaa, bbb, ccc, ddd, eee, F2, KK4, in[9], 12);
	221	ROUND(eee, aaa, bbb, ccc, ddd, F2, KK4, in[7], 5);
	222	ROUND(ddd, eee, aaa, bbb, ccc, F2, KK4, in[10], 15);
	223	ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[14], 8);
	224
	225	/* Swap contents of "d" registers */
a4789089	226	swap(dd, ddd);
c555c28d AKR	227
	228	/* round 5: left lane" */
	229	ROUND(bb, cc, dd, ee, aa, F5, K5, in[4], 9);
	230	ROUND(aa, bb, cc, dd, ee, F5, K5, in[0], 15);
	231	ROUND(ee, aa, bb, cc, dd, F5, K5, in[5], 5);
	232	ROUND(dd, ee, aa, bb, cc, F5, K5, in[9], 11);
	233	ROUND(cc, dd, ee, aa, bb, F5, K5, in[7], 6);
	234	ROUND(bb, cc, dd, ee, aa, F5, K5, in[12], 8);
	235	ROUND(aa, bb, cc, dd, ee, F5, K5, in[2], 13);
	236	ROUND(ee, aa, bb, cc, dd, F5, K5, in[10], 12);
	237	ROUND(dd, ee, aa, bb, cc, F5, K5, in[14], 5);
	238	ROUND(cc, dd, ee, aa, bb, F5, K5, in[1], 12);
	239	ROUND(bb, cc, dd, ee, aa, F5, K5, in[3], 13);
	240	ROUND(aa, bb, cc, dd, ee, F5, K5, in[8], 14);
	241	ROUND(ee, aa, bb, cc, dd, F5, K5, in[11], 11);
	242	ROUND(dd, ee, aa, bb, cc, F5, K5, in[6], 8);
	243	ROUND(cc, dd, ee, aa, bb, F5, K5, in[15], 5);
	244	ROUND(bb, cc, dd, ee, aa, F5, K5, in[13], 6);
	245
	246	/* round 5: right lane */
	247	ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[12], 8);
	248	ROUND(aaa, bbb, ccc, ddd, eee, F1, KK5, in[15], 5);
	249	ROUND(eee, aaa, bbb, ccc, ddd, F1, KK5, in[10], 12);
	250	ROUND(ddd, eee, aaa, bbb, ccc, F1, KK5, in[4], 9);
	251	ROUND(ccc, ddd, eee, aaa, bbb, F1, KK5, in[1], 12);
	252	ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[5], 5);
	253	ROUND(aaa, bbb, ccc, ddd, eee, F1, KK5, in[8], 14);
	254	ROUND(eee, aaa, bbb, ccc, ddd, F1, KK5, in[7], 6);
	255	ROUND(ddd, eee, aaa, bbb, ccc, F1, KK5, in[6], 8);
	256	ROUND(ccc, ddd, eee, aaa, bbb, F1, KK5, in[2], 13);
	257	ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[13], 6);
	258	ROUND(aaa, bbb, ccc, ddd, eee, F1, KK5, in[14], 5);
	259	ROUND(eee, aaa, bbb, ccc, ddd, F1, KK5, in[0], 15);
	260	ROUND(ddd, eee, aaa, bbb, ccc, F1, KK5, in[3], 13);
	261	ROUND(ccc, ddd, eee, aaa, bbb, F1, KK5, in[9], 11);
	262	ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[11], 11);
	263
	264	/* Swap contents of "e" registers */
a4789089	265	swap(ee, eee);
c555c28d AKR	266
	267	/* combine results */
	268	state[0] += aa;
	269	state[1] += bb;
	270	state[2] += cc;
	271	state[3] += dd;
	272	state[4] += ee;
	273	state[5] += aaa;
	274	state[6] += bbb;
	275	state[7] += ccc;
	276	state[8] += ddd;
	277	state[9] += eee;
c555c28d AKR	278	}
c555c28d AKR	279
3b8efb4c	280	static int rmd320_init(struct shash_desc *desc)
c555c28d	281	{
3b8efb4c	282	struct rmd320_ctx *rctx = shash_desc_ctx(desc);
c555c28d AKR	283
	284	rctx->byte_count = 0;
	285
	286	rctx->state[0] = RMD_H0;
	287	rctx->state[1] = RMD_H1;
	288	rctx->state[2] = RMD_H2;
	289	rctx->state[3] = RMD_H3;
	290	rctx->state[4] = RMD_H4;
	291	rctx->state[5] = RMD_H5;
	292	rctx->state[6] = RMD_H6;
	293	rctx->state[7] = RMD_H7;
	294	rctx->state[8] = RMD_H8;
	295	rctx->state[9] = RMD_H9;
	296
	297	memset(rctx->buffer, 0, sizeof(rctx->buffer));
3b8efb4c HX	298
3b8efb4c HX	299	return 0;
c555c28d AKR	300	}
c555c28d AKR	301
3b8efb4c HX	302	static int rmd320_update(struct shash_desc desc, const u8 data,
3b8efb4c HX	303	unsigned int len)
c555c28d	304	{
3b8efb4c	305	struct rmd320_ctx *rctx = shash_desc_ctx(desc);
c555c28d AKR	306	const u32 avail = sizeof(rctx->buffer) - (rctx->byte_count & 0x3f);
	307
	308	rctx->byte_count += len;
	309
	310	/* Enough space in buffer? If so copy and we're done */
	311	if (avail > len) {
	312	memcpy((char *)rctx->buffer + (sizeof(rctx->buffer) - avail),
	313	data, len);
3b8efb4c	314	goto out;
c555c28d AKR	315	}
	316
	317	memcpy((char *)rctx->buffer + (sizeof(rctx->buffer) - avail),
	318	data, avail);
	319
feedfdaa	320	rmd320_transform(rctx->state, rctx->buffer);
c555c28d AKR	321	data += avail;
	322	len -= avail;
	323
	324	while (len >= sizeof(rctx->buffer)) {
	325	memcpy(rctx->buffer, data, sizeof(rctx->buffer));
feedfdaa	326	rmd320_transform(rctx->state, rctx->buffer);
c555c28d AKR	327	data += sizeof(rctx->buffer);
	328	len -= sizeof(rctx->buffer);
	329	}
	330
	331	memcpy(rctx->buffer, data, len);
3b8efb4c HX	332
	333	out:
	334	return 0;
c555c28d AKR	335	}
	336
	337	/* Add padding and return the message digest. */
3b8efb4c	338	static int rmd320_final(struct shash_desc desc, u8 out)
c555c28d	339	{
3b8efb4c	340	struct rmd320_ctx *rctx = shash_desc_ctx(desc);
feedfdaa	341	u32 i, index, padlen;
caee1688 HH	342	__le64 bits;
caee1688 HH	343	__le32 dst = (__le32 )out;
c555c28d	344	static const u8 padding[64] = { 0x80, };
feedfdaa AKR	345
feedfdaa AKR	346	bits = cpu_to_le64(rctx->byte_count << 3);
c555c28d AKR	347
	348	/* Pad out to 56 mod 64 */
	349	index = rctx->byte_count & 0x3f;
	350	padlen = (index < 56) ? (56 - index) : ((64+56) - index);
3b8efb4c	351	rmd320_update(desc, padding, padlen);
c555c28d AKR	352
c555c28d AKR	353	/* Append length */
3b8efb4c	354	rmd320_update(desc, (const u8 *)&bits, sizeof(bits));
c555c28d AKR	355
c555c28d AKR	356	/* Store state in digest */
feedfdaa	357	for (i = 0; i < 10; i++)
5cdcc22f	358	dst[i] = cpu_to_le32p(&rctx->state[i]);
c555c28d AKR	359
	360	/* Wipe context */
	361	memset(rctx, 0, sizeof(*rctx));
3b8efb4c HX	362
3b8efb4c HX	363	return 0;
c555c28d AKR	364	}
c555c28d AKR	365
3b8efb4c HX	366	static struct shash_alg alg = {
	367	.digestsize = RMD320_DIGEST_SIZE,
	368	.init = rmd320_init,
	369	.update = rmd320_update,
	370	.final = rmd320_final,
	371	.descsize = sizeof(struct rmd320_ctx),
	372	.base = {
	373	.cra_name = "rmd320",
3b8efb4c HX	374	.cra_blocksize = RMD320_BLOCK_SIZE,
	375	.cra_module = THIS_MODULE,
	376	}
c555c28d AKR	377	};
	378
	379	static int __init rmd320_mod_init(void)
	380	{
3b8efb4c	381	return crypto_register_shash(&alg);
c555c28d AKR	382	}
	383
	384	static void __exit rmd320_mod_fini(void)
	385	{
3b8efb4c	386	crypto_unregister_shash(&alg);
c555c28d AKR	387	}
	388
	389	module_init(rmd320_mod_init);
	390	module_exit(rmd320_mod_fini);
	391
	392	MODULE_LICENSE("GPL");
3181c225	393	MODULE_AUTHOR("Adrian-Ken Rueegsegger <[email protected]>");
c555c28d	394	MODULE_DESCRIPTION("RIPEMD-320 Message Digest");
5d26a105	395	MODULE_ALIAS_CRYPTO("rmd320");