[mirror_ubuntu-bionic-kernel.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 <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 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, tmp;

	/* 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 */
	tmp = aa; aa = aaa; aaa = tmp;

	/* 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 */
	tmp = bb; bb = bbb; bbb = tmp;

	/* 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 */
	tmp = cc; cc = ccc; ccc = tmp;

	/* 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 */
	tmp = dd; dd = ddd; ddd = tmp;

	/* 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 */
	tmp = ee; ee = eee; eee = tmp;

	/* 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;

	return;
}

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_flags	 =	CRYPTO_ALG_TYPE_SHASH,
		.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 <ken@codelabs.ch>");
MODULE_DESCRIPTION("RIPEMD-320 Message Digest");
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 <ken@codelabs.ch>
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 AKR	55	{
	56	u32 aa, bb, cc, dd, ee, aaa, bbb, ccc, ddd, eee, tmp;
	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 */
	109	tmp = aa; aa = aaa; aaa = tmp;
	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 */
148	tmp = bb; bb = bbb; bbb = tmp;
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 */
187	tmp = cc; cc = ccc; ccc = tmp;
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 */
226	tmp = dd; dd = ddd; ddd = tmp;
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 */
265	tmp = ee; ee = eee; eee = tmp;
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;
278
279	return;
280	}
281
3b8efb4c	282	static int rmd320_init(struct shash_desc *desc)
c555c28d	283	{
3b8efb4c	284	struct rmd320_ctx *rctx = shash_desc_ctx(desc);
c555c28d AKR	285
	286	rctx->byte_count = 0;
	287
	288	rctx->state[0] = RMD_H0;
	289	rctx->state[1] = RMD_H1;
	290	rctx->state[2] = RMD_H2;
	291	rctx->state[3] = RMD_H3;
	292	rctx->state[4] = RMD_H4;
	293	rctx->state[5] = RMD_H5;
	294	rctx->state[6] = RMD_H6;
	295	rctx->state[7] = RMD_H7;
	296	rctx->state[8] = RMD_H8;
	297	rctx->state[9] = RMD_H9;
	298
	299	memset(rctx->buffer, 0, sizeof(rctx->buffer));
3b8efb4c HX	300
3b8efb4c HX	301	return 0;
c555c28d AKR	302	}
c555c28d AKR	303
3b8efb4c HX	304	static int rmd320_update(struct shash_desc desc, const u8 data,
3b8efb4c HX	305	unsigned int len)
c555c28d	306	{
3b8efb4c	307	struct rmd320_ctx *rctx = shash_desc_ctx(desc);
c555c28d AKR	308	const u32 avail = sizeof(rctx->buffer) - (rctx->byte_count & 0x3f);
	309
	310	rctx->byte_count += len;
	311
	312	/* Enough space in buffer? If so copy and we're done */
	313	if (avail > len) {
	314	memcpy((char *)rctx->buffer + (sizeof(rctx->buffer) - avail),
	315	data, len);
3b8efb4c	316	goto out;
c555c28d AKR	317	}
	318
	319	memcpy((char *)rctx->buffer + (sizeof(rctx->buffer) - avail),
	320	data, avail);
	321
feedfdaa	322	rmd320_transform(rctx->state, rctx->buffer);
c555c28d AKR	323	data += avail;
	324	len -= avail;
	325
	326	while (len >= sizeof(rctx->buffer)) {
	327	memcpy(rctx->buffer, data, sizeof(rctx->buffer));
feedfdaa	328	rmd320_transform(rctx->state, rctx->buffer);
c555c28d AKR	329	data += sizeof(rctx->buffer);
	330	len -= sizeof(rctx->buffer);
	331	}
	332
	333	memcpy(rctx->buffer, data, len);
3b8efb4c HX	334
	335	out:
	336	return 0;
c555c28d AKR	337	}
	338
	339	/* Add padding and return the message digest. */
3b8efb4c	340	static int rmd320_final(struct shash_desc desc, u8 out)
c555c28d	341	{
3b8efb4c	342	struct rmd320_ctx *rctx = shash_desc_ctx(desc);
feedfdaa	343	u32 i, index, padlen;
caee1688 HH	344	__le64 bits;
caee1688 HH	345	__le32 dst = (__le32 )out;
c555c28d	346	static const u8 padding[64] = { 0x80, };
feedfdaa AKR	347
feedfdaa AKR	348	bits = cpu_to_le64(rctx->byte_count << 3);
c555c28d AKR	349
	350	/* Pad out to 56 mod 64 */
	351	index = rctx->byte_count & 0x3f;
	352	padlen = (index < 56) ? (56 - index) : ((64+56) - index);
3b8efb4c	353	rmd320_update(desc, padding, padlen);
c555c28d AKR	354
c555c28d AKR	355	/* Append length */
3b8efb4c	356	rmd320_update(desc, (const u8 *)&bits, sizeof(bits));
c555c28d AKR	357
c555c28d AKR	358	/* Store state in digest */
feedfdaa	359	for (i = 0; i < 10; i++)
5cdcc22f	360	dst[i] = cpu_to_le32p(&rctx->state[i]);
c555c28d AKR	361
	362	/* Wipe context */
	363	memset(rctx, 0, sizeof(*rctx));
3b8efb4c HX	364
3b8efb4c HX	365	return 0;
c555c28d AKR	366	}
c555c28d AKR	367
3b8efb4c HX	368	static struct shash_alg alg = {
	369	.digestsize = RMD320_DIGEST_SIZE,
	370	.init = rmd320_init,
	371	.update = rmd320_update,
	372	.final = rmd320_final,
	373	.descsize = sizeof(struct rmd320_ctx),
	374	.base = {
	375	.cra_name = "rmd320",
	376	.cra_flags = CRYPTO_ALG_TYPE_SHASH,
	377	.cra_blocksize = RMD320_BLOCK_SIZE,
	378	.cra_module = THIS_MODULE,
	379	}
c555c28d AKR	380	};
	381
	382	static int __init rmd320_mod_init(void)
	383	{
3b8efb4c	384	return crypto_register_shash(&alg);
c555c28d AKR	385	}
	386
	387	static void __exit rmd320_mod_fini(void)
	388	{
3b8efb4c	389	crypto_unregister_shash(&alg);
c555c28d AKR	390	}
	391
	392	module_init(rmd320_mod_init);
	393	module_exit(rmd320_mod_fini);
	394
	395	MODULE_LICENSE("GPL");
3181c225	396	MODULE_AUTHOR("Adrian-Ken Rueegsegger <ken@codelabs.ch>");
c555c28d	397	MODULE_DESCRIPTION("RIPEMD-320 Message Digest");