[mirror_ubuntu-jammy-kernel.git] / crypto / rmd320.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * 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>
 */
#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_driver_name =	"rmd320-generic",
		.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);
}

subsys_initcall(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");
MODULE_ALIAS_CRYPTO("rmd320");
Commit	Line	Data
2874c5fd	1	// SPDX-License-Identifier: GPL-2.0-or-later
c555c28d AKR	2	/*
	3	* Cryptographic API.
	4	*
	5	* RIPEMD-320 - RACE Integrity Primitives Evaluation Message Digest.
	6	*
	7	* Based on the reference implementation by Antoon Bosselaers, ESAT-COSIC
	8	*
3181c225	9	* Copyright (c) 2008 Adrian-Ken Rueegsegger <ken@codelabs.ch>
c555c28d	10	*/
3b8efb4c	11	#include <crypto/internal/hash.h>
c555c28d AKR	12	#include <linux/init.h>
	13	#include <linux/module.h>
	14	#include <linux/mm.h>
c555c28d AKR	15	#include <linux/types.h>
	16	#include <asm/byteorder.h>
	17
	18	#include "ripemd.h"
	19
	20	struct rmd320_ctx {
	21	u64 byte_count;
	22	u32 state[10];
caee1688	23	__le32 buffer[16];
c555c28d AKR	24	};
	25
	26	#define K1 RMD_K1
	27	#define K2 RMD_K2
	28	#define K3 RMD_K3
	29	#define K4 RMD_K4
	30	#define K5 RMD_K5
	31	#define KK1 RMD_K6
	32	#define KK2 RMD_K7
	33	#define KK3 RMD_K8
	34	#define KK4 RMD_K9
	35	#define KK5 RMD_K1
	36
	37	#define F1(x, y, z) (x ^ y ^ z) /* XOR */
	38	#define F2(x, y, z) (z ^ (x & (y ^ z))) /* x ? y : z */
	39	#define F3(x, y, z) ((x \| ~y) ^ z)
	40	#define F4(x, y, z) (y ^ (z & (x ^ y))) /* z ? x : y */
	41	#define F5(x, y, z) (x ^ (y \| ~z))
	42
	43	#define ROUND(a, b, c, d, e, f, k, x, s) { \
5cdcc22f	44	(a) += f((b), (c), (d)) + le32_to_cpup(&(x)) + (k); \
c555c28d AKR	45	(a) = rol32((a), (s)) + (e); \
	46	(c) = rol32((c), 10); \
	47	}
	48
caee1688	49	static void rmd320_transform(u32 state, const __le32 in)
c555c28d	50	{
a4789089	51	u32 aa, bb, cc, dd, ee, aaa, bbb, ccc, ddd, eee;
c555c28d AKR	52
	53	/* Initialize left lane */
	54	aa = state[0];
	55	bb = state[1];
	56	cc = state[2];
	57	dd = state[3];
	58	ee = state[4];
	59
	60	/* Initialize right lane */
	61	aaa = state[5];
	62	bbb = state[6];
	63	ccc = state[7];
	64	ddd = state[8];
	65	eee = state[9];
	66
	67	/* round 1: left lane */
	68	ROUND(aa, bb, cc, dd, ee, F1, K1, in[0], 11);
	69	ROUND(ee, aa, bb, cc, dd, F1, K1, in[1], 14);
	70	ROUND(dd, ee, aa, bb, cc, F1, K1, in[2], 15);
	71	ROUND(cc, dd, ee, aa, bb, F1, K1, in[3], 12);
	72	ROUND(bb, cc, dd, ee, aa, F1, K1, in[4], 5);
	73	ROUND(aa, bb, cc, dd, ee, F1, K1, in[5], 8);
	74	ROUND(ee, aa, bb, cc, dd, F1, K1, in[6], 7);
	75	ROUND(dd, ee, aa, bb, cc, F1, K1, in[7], 9);
	76	ROUND(cc, dd, ee, aa, bb, F1, K1, in[8], 11);
	77	ROUND(bb, cc, dd, ee, aa, F1, K1, in[9], 13);
	78	ROUND(aa, bb, cc, dd, ee, F1, K1, in[10], 14);
	79	ROUND(ee, aa, bb, cc, dd, F1, K1, in[11], 15);
	80	ROUND(dd, ee, aa, bb, cc, F1, K1, in[12], 6);
	81	ROUND(cc, dd, ee, aa, bb, F1, K1, in[13], 7);
	82	ROUND(bb, cc, dd, ee, aa, F1, K1, in[14], 9);
	83	ROUND(aa, bb, cc, dd, ee, F1, K1, in[15], 8);
	84
	85	/* round 1: right lane */
	86	ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[5], 8);
	87	ROUND(eee, aaa, bbb, ccc, ddd, F5, KK1, in[14], 9);
	88	ROUND(ddd, eee, aaa, bbb, ccc, F5, KK1, in[7], 9);
	89	ROUND(ccc, ddd, eee, aaa, bbb, F5, KK1, in[0], 11);
	90	ROUND(bbb, ccc, ddd, eee, aaa, F5, KK1, in[9], 13);
	91	ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[2], 15);
	92	ROUND(eee, aaa, bbb, ccc, ddd, F5, KK1, in[11], 15);
	93	ROUND(ddd, eee, aaa, bbb, ccc, F5, KK1, in[4], 5);
	94	ROUND(ccc, ddd, eee, aaa, bbb, F5, KK1, in[13], 7);
	95	ROUND(bbb, ccc, ddd, eee, aaa, F5, KK1, in[6], 7);
	96	ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[15], 8);
	97	ROUND(eee, aaa, bbb, ccc, ddd, F5, KK1, in[8], 11);
	98	ROUND(ddd, eee, aaa, bbb, ccc, F5, KK1, in[1], 14);
	99	ROUND(ccc, ddd, eee, aaa, bbb, F5, KK1, in[10], 14);
	100	ROUND(bbb, ccc, ddd, eee, aaa, F5, KK1, in[3], 12);
	101	ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[12], 6);
	102
	103	/* Swap contents of "a" registers */
a4789089	104	swap(aa, aaa);
c555c28d AKR	105
	106	/* round 2: left lane" */
	107	ROUND(ee, aa, bb, cc, dd, F2, K2, in[7], 7);
	108	ROUND(dd, ee, aa, bb, cc, F2, K2, in[4], 6);
	109	ROUND(cc, dd, ee, aa, bb, F2, K2, in[13], 8);
	110	ROUND(bb, cc, dd, ee, aa, F2, K2, in[1], 13);
	111	ROUND(aa, bb, cc, dd, ee, F2, K2, in[10], 11);
	112	ROUND(ee, aa, bb, cc, dd, F2, K2, in[6], 9);
	113	ROUND(dd, ee, aa, bb, cc, F2, K2, in[15], 7);
	114	ROUND(cc, dd, ee, aa, bb, F2, K2, in[3], 15);
	115	ROUND(bb, cc, dd, ee, aa, F2, K2, in[12], 7);
	116	ROUND(aa, bb, cc, dd, ee, F2, K2, in[0], 12);
	117	ROUND(ee, aa, bb, cc, dd, F2, K2, in[9], 15);
	118	ROUND(dd, ee, aa, bb, cc, F2, K2, in[5], 9);
	119	ROUND(cc, dd, ee, aa, bb, F2, K2, in[2], 11);
	120	ROUND(bb, cc, dd, ee, aa, F2, K2, in[14], 7);
	121	ROUND(aa, bb, cc, dd, ee, F2, K2, in[11], 13);
	122	ROUND(ee, aa, bb, cc, dd, F2, K2, in[8], 12);
	123
	124	/* round 2: right lane */
	125	ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[6], 9);
	126	ROUND(ddd, eee, aaa, bbb, ccc, F4, KK2, in[11], 13);
	127	ROUND(ccc, ddd, eee, aaa, bbb, F4, KK2, in[3], 15);
	128	ROUND(bbb, ccc, ddd, eee, aaa, F4, KK2, in[7], 7);
	129	ROUND(aaa, bbb, ccc, ddd, eee, F4, KK2, in[0], 12);
	130	ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[13], 8);
	131	ROUND(ddd, eee, aaa, bbb, ccc, F4, KK2, in[5], 9);
	132	ROUND(ccc, ddd, eee, aaa, bbb, F4, KK2, in[10], 11);
	133	ROUND(bbb, ccc, ddd, eee, aaa, F4, KK2, in[14], 7);
	134	ROUND(aaa, bbb, ccc, ddd, eee, F4, KK2, in[15], 7);
	135	ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[8], 12);
	136	ROUND(ddd, eee, aaa, bbb, ccc, F4, KK2, in[12], 7);
	137	ROUND(ccc, ddd, eee, aaa, bbb, F4, KK2, in[4], 6);
	138	ROUND(bbb, ccc, ddd, eee, aaa, F4, KK2, in[9], 15);
	139	ROUND(aaa, bbb, ccc, ddd, eee, F4, KK2, in[1], 13);
	140	ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[2], 11);
	141
	142	/* Swap contents of "b" registers */
a4789089	143	swap(bb, bbb);
c555c28d AKR	144
	145	/* round 3: left lane" */
	146	ROUND(dd, ee, aa, bb, cc, F3, K3, in[3], 11);
	147	ROUND(cc, dd, ee, aa, bb, F3, K3, in[10], 13);
	148	ROUND(bb, cc, dd, ee, aa, F3, K3, in[14], 6);
	149	ROUND(aa, bb, cc, dd, ee, F3, K3, in[4], 7);
	150	ROUND(ee, aa, bb, cc, dd, F3, K3, in[9], 14);
	151	ROUND(dd, ee, aa, bb, cc, F3, K3, in[15], 9);
	152	ROUND(cc, dd, ee, aa, bb, F3, K3, in[8], 13);
	153	ROUND(bb, cc, dd, ee, aa, F3, K3, in[1], 15);
	154	ROUND(aa, bb, cc, dd, ee, F3, K3, in[2], 14);
	155	ROUND(ee, aa, bb, cc, dd, F3, K3, in[7], 8);
	156	ROUND(dd, ee, aa, bb, cc, F3, K3, in[0], 13);
	157	ROUND(cc, dd, ee, aa, bb, F3, K3, in[6], 6);
	158	ROUND(bb, cc, dd, ee, aa, F3, K3, in[13], 5);
	159	ROUND(aa, bb, cc, dd, ee, F3, K3, in[11], 12);
	160	ROUND(ee, aa, bb, cc, dd, F3, K3, in[5], 7);
	161	ROUND(dd, ee, aa, bb, cc, F3, K3, in[12], 5);
	162
	163	/* round 3: right lane */
	164	ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[15], 9);
	165	ROUND(ccc, ddd, eee, aaa, bbb, F3, KK3, in[5], 7);
	166	ROUND(bbb, ccc, ddd, eee, aaa, F3, KK3, in[1], 15);
	167	ROUND(aaa, bbb, ccc, ddd, eee, F3, KK3, in[3], 11);
	168	ROUND(eee, aaa, bbb, ccc, ddd, F3, KK3, in[7], 8);
	169	ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[14], 6);
	170	ROUND(ccc, ddd, eee, aaa, bbb, F3, KK3, in[6], 6);
	171	ROUND(bbb, ccc, ddd, eee, aaa, F3, KK3, in[9], 14);
	172	ROUND(aaa, bbb, ccc, ddd, eee, F3, KK3, in[11], 12);
	173	ROUND(eee, aaa, bbb, ccc, ddd, F3, KK3, in[8], 13);
	174	ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[12], 5);
	175	ROUND(ccc, ddd, eee, aaa, bbb, F3, KK3, in[2], 14);
	176	ROUND(bbb, ccc, ddd, eee, aaa, F3, KK3, in[10], 13);
	177	ROUND(aaa, bbb, ccc, ddd, eee, F3, KK3, in[0], 13);
	178	ROUND(eee, aaa, bbb, ccc, ddd, F3, KK3, in[4], 7);
	179	ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[13], 5);
	180
	181	/* Swap contents of "c" registers */
a4789089	182	swap(cc, ccc);
c555c28d AKR	183
	184	/* round 4: left lane" */
	185	ROUND(cc, dd, ee, aa, bb, F4, K4, in[1], 11);
	186	ROUND(bb, cc, dd, ee, aa, F4, K4, in[9], 12);
	187	ROUND(aa, bb, cc, dd, ee, F4, K4, in[11], 14);
	188	ROUND(ee, aa, bb, cc, dd, F4, K4, in[10], 15);
	189	ROUND(dd, ee, aa, bb, cc, F4, K4, in[0], 14);
	190	ROUND(cc, dd, ee, aa, bb, F4, K4, in[8], 15);
	191	ROUND(bb, cc, dd, ee, aa, F4, K4, in[12], 9);
	192	ROUND(aa, bb, cc, dd, ee, F4, K4, in[4], 8);
	193	ROUND(ee, aa, bb, cc, dd, F4, K4, in[13], 9);
	194	ROUND(dd, ee, aa, bb, cc, F4, K4, in[3], 14);
	195	ROUND(cc, dd, ee, aa, bb, F4, K4, in[7], 5);
	196	ROUND(bb, cc, dd, ee, aa, F4, K4, in[15], 6);
	197	ROUND(aa, bb, cc, dd, ee, F4, K4, in[14], 8);
	198	ROUND(ee, aa, bb, cc, dd, F4, K4, in[5], 6);
	199	ROUND(dd, ee, aa, bb, cc, F4, K4, in[6], 5);
	200	ROUND(cc, dd, ee, aa, bb, F4, K4, in[2], 12);
	201
	202	/* round 4: right lane */
	203	ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[8], 15);
	204	ROUND(bbb, ccc, ddd, eee, aaa, F2, KK4, in[6], 5);
	205	ROUND(aaa, bbb, ccc, ddd, eee, F2, KK4, in[4], 8);
	206	ROUND(eee, aaa, bbb, ccc, ddd, F2, KK4, in[1], 11);
	207	ROUND(ddd, eee, aaa, bbb, ccc, F2, KK4, in[3], 14);
	208	ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[11], 14);
	209	ROUND(bbb, ccc, ddd, eee, aaa, F2, KK4, in[15], 6);
	210	ROUND(aaa, bbb, ccc, ddd, eee, F2, KK4, in[0], 14);
	211	ROUND(eee, aaa, bbb, ccc, ddd, F2, KK4, in[5], 6);
	212	ROUND(ddd, eee, aaa, bbb, ccc, F2, KK4, in[12], 9);
	213	ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[2], 12);
	214	ROUND(bbb, ccc, ddd, eee, aaa, F2, KK4, in[13], 9);
	215	ROUND(aaa, bbb, ccc, ddd, eee, F2, KK4, in[9], 12);
	216	ROUND(eee, aaa, bbb, ccc, ddd, F2, KK4, in[7], 5);
	217	ROUND(ddd, eee, aaa, bbb, ccc, F2, KK4, in[10], 15);
	218	ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[14], 8);
	219
	220	/* Swap contents of "d" registers */
a4789089	221	swap(dd, ddd);
c555c28d AKR	222
	223	/* round 5: left lane" */
	224	ROUND(bb, cc, dd, ee, aa, F5, K5, in[4], 9);
	225	ROUND(aa, bb, cc, dd, ee, F5, K5, in[0], 15);
	226	ROUND(ee, aa, bb, cc, dd, F5, K5, in[5], 5);
	227	ROUND(dd, ee, aa, bb, cc, F5, K5, in[9], 11);
	228	ROUND(cc, dd, ee, aa, bb, F5, K5, in[7], 6);
	229	ROUND(bb, cc, dd, ee, aa, F5, K5, in[12], 8);
	230	ROUND(aa, bb, cc, dd, ee, F5, K5, in[2], 13);
	231	ROUND(ee, aa, bb, cc, dd, F5, K5, in[10], 12);
	232	ROUND(dd, ee, aa, bb, cc, F5, K5, in[14], 5);
	233	ROUND(cc, dd, ee, aa, bb, F5, K5, in[1], 12);
	234	ROUND(bb, cc, dd, ee, aa, F5, K5, in[3], 13);
	235	ROUND(aa, bb, cc, dd, ee, F5, K5, in[8], 14);
	236	ROUND(ee, aa, bb, cc, dd, F5, K5, in[11], 11);
	237	ROUND(dd, ee, aa, bb, cc, F5, K5, in[6], 8);
	238	ROUND(cc, dd, ee, aa, bb, F5, K5, in[15], 5);
	239	ROUND(bb, cc, dd, ee, aa, F5, K5, in[13], 6);
	240
	241	/* round 5: right lane */
	242	ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[12], 8);
	243	ROUND(aaa, bbb, ccc, ddd, eee, F1, KK5, in[15], 5);
	244	ROUND(eee, aaa, bbb, ccc, ddd, F1, KK5, in[10], 12);
	245	ROUND(ddd, eee, aaa, bbb, ccc, F1, KK5, in[4], 9);
	246	ROUND(ccc, ddd, eee, aaa, bbb, F1, KK5, in[1], 12);
	247	ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[5], 5);
	248	ROUND(aaa, bbb, ccc, ddd, eee, F1, KK5, in[8], 14);
	249	ROUND(eee, aaa, bbb, ccc, ddd, F1, KK5, in[7], 6);
	250	ROUND(ddd, eee, aaa, bbb, ccc, F1, KK5, in[6], 8);
	251	ROUND(ccc, ddd, eee, aaa, bbb, F1, KK5, in[2], 13);
	252	ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[13], 6);
	253	ROUND(aaa, bbb, ccc, ddd, eee, F1, KK5, in[14], 5);
	254	ROUND(eee, aaa, bbb, ccc, ddd, F1, KK5, in[0], 15);
	255	ROUND(ddd, eee, aaa, bbb, ccc, F1, KK5, in[3], 13);
	256	ROUND(ccc, ddd, eee, aaa, bbb, F1, KK5, in[9], 11);
	257	ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[11], 11);
	258
	259	/* Swap contents of "e" registers */
a4789089	260	swap(ee, eee);
c555c28d AKR	261
	262	/* combine results */
	263	state[0] += aa;
	264	state[1] += bb;
	265	state[2] += cc;
	266	state[3] += dd;
	267	state[4] += ee;
	268	state[5] += aaa;
	269	state[6] += bbb;
	270	state[7] += ccc;
	271	state[8] += ddd;
	272	state[9] += eee;
c555c28d AKR	273	}
c555c28d AKR	274
3b8efb4c	275	static int rmd320_init(struct shash_desc *desc)
c555c28d	276	{
3b8efb4c	277	struct rmd320_ctx *rctx = shash_desc_ctx(desc);
c555c28d AKR	278
	279	rctx->byte_count = 0;
	280
	281	rctx->state[0] = RMD_H0;
	282	rctx->state[1] = RMD_H1;
	283	rctx->state[2] = RMD_H2;
	284	rctx->state[3] = RMD_H3;
	285	rctx->state[4] = RMD_H4;
	286	rctx->state[5] = RMD_H5;
	287	rctx->state[6] = RMD_H6;
	288	rctx->state[7] = RMD_H7;
	289	rctx->state[8] = RMD_H8;
	290	rctx->state[9] = RMD_H9;
	291
	292	memset(rctx->buffer, 0, sizeof(rctx->buffer));
3b8efb4c HX	293
3b8efb4c HX	294	return 0;
c555c28d AKR	295	}
c555c28d AKR	296
3b8efb4c HX	297	static int rmd320_update(struct shash_desc desc, const u8 data,
3b8efb4c HX	298	unsigned int len)
c555c28d	299	{
3b8efb4c	300	struct rmd320_ctx *rctx = shash_desc_ctx(desc);
c555c28d AKR	301	const u32 avail = sizeof(rctx->buffer) - (rctx->byte_count & 0x3f);
	302
	303	rctx->byte_count += len;
	304
	305	/* Enough space in buffer? If so copy and we're done */
	306	if (avail > len) {
	307	memcpy((char *)rctx->buffer + (sizeof(rctx->buffer) - avail),
	308	data, len);
3b8efb4c	309	goto out;
c555c28d AKR	310	}
	311
	312	memcpy((char *)rctx->buffer + (sizeof(rctx->buffer) - avail),
	313	data, avail);
	314
feedfdaa	315	rmd320_transform(rctx->state, rctx->buffer);
c555c28d AKR	316	data += avail;
	317	len -= avail;
	318
	319	while (len >= sizeof(rctx->buffer)) {
	320	memcpy(rctx->buffer, data, sizeof(rctx->buffer));
feedfdaa	321	rmd320_transform(rctx->state, rctx->buffer);
c555c28d AKR	322	data += sizeof(rctx->buffer);
	323	len -= sizeof(rctx->buffer);
	324	}
	325
	326	memcpy(rctx->buffer, data, len);
3b8efb4c HX	327
	328	out:
	329	return 0;
c555c28d AKR	330	}
	331
	332	/* Add padding and return the message digest. */
3b8efb4c	333	static int rmd320_final(struct shash_desc desc, u8 out)
c555c28d	334	{
3b8efb4c	335	struct rmd320_ctx *rctx = shash_desc_ctx(desc);
feedfdaa	336	u32 i, index, padlen;
caee1688 HH	337	__le64 bits;
caee1688 HH	338	__le32 dst = (__le32 )out;
c555c28d	339	static const u8 padding[64] = { 0x80, };
feedfdaa AKR	340
feedfdaa AKR	341	bits = cpu_to_le64(rctx->byte_count << 3);
c555c28d AKR	342
	343	/* Pad out to 56 mod 64 */
	344	index = rctx->byte_count & 0x3f;
	345	padlen = (index < 56) ? (56 - index) : ((64+56) - index);
3b8efb4c	346	rmd320_update(desc, padding, padlen);
c555c28d AKR	347
c555c28d AKR	348	/* Append length */
3b8efb4c	349	rmd320_update(desc, (const u8 *)&bits, sizeof(bits));
c555c28d AKR	350
c555c28d AKR	351	/* Store state in digest */
feedfdaa	352	for (i = 0; i < 10; i++)
5cdcc22f	353	dst[i] = cpu_to_le32p(&rctx->state[i]);
c555c28d AKR	354
	355	/* Wipe context */
	356	memset(rctx, 0, sizeof(*rctx));
3b8efb4c HX	357
3b8efb4c HX	358	return 0;
c555c28d AKR	359	}
c555c28d AKR	360
3b8efb4c HX	361	static struct shash_alg alg = {
	362	.digestsize = RMD320_DIGEST_SIZE,
	363	.init = rmd320_init,
	364	.update = rmd320_update,
	365	.final = rmd320_final,
	366	.descsize = sizeof(struct rmd320_ctx),
	367	.base = {
	368	.cra_name = "rmd320",
d6ebf528	369	.cra_driver_name = "rmd320-generic",
3b8efb4c HX	370	.cra_blocksize = RMD320_BLOCK_SIZE,
	371	.cra_module = THIS_MODULE,
	372	}
c555c28d AKR	373	};
	374
	375	static int __init rmd320_mod_init(void)
	376	{
3b8efb4c	377	return crypto_register_shash(&alg);
c555c28d AKR	378	}
	379
	380	static void __exit rmd320_mod_fini(void)
	381	{
3b8efb4c	382	crypto_unregister_shash(&alg);
c555c28d AKR	383	}
c555c28d AKR	384
c4741b23	385	subsys_initcall(rmd320_mod_init);
c555c28d AKR	386	module_exit(rmd320_mod_fini);
	387
	388	MODULE_LICENSE("GPL");
3181c225	389	MODULE_AUTHOR("Adrian-Ken Rueegsegger <ken@codelabs.ch>");
c555c28d	390	MODULE_DESCRIPTION("RIPEMD-320 Message Digest");
5d26a105	391	MODULE_ALIAS_CRYPTO("rmd320");