[mirror_ubuntu-hirsute-kernel.git] / crypto / rmd160.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * 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>
 */
#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;
}

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_driver_name =	"rmd160-generic",
		.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);
}

subsys_initcall(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
2874c5fd	1	// SPDX-License-Identifier: GPL-2.0-or-later
c6580eb8 AKR	2	/*
	3	* Cryptographic API.
	4	*
	5	* RIPEMD-160 - 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>
c6580eb8	10	*/
e5835fba	11	#include <crypto/internal/hash.h>
c6580eb8 AKR	12	#include <linux/init.h>
	13	#include <linux/module.h>
	14	#include <linux/mm.h>
c6580eb8 AKR	15	#include <linux/types.h>
	16	#include <asm/byteorder.h>
	17
	18	#include "ripemd.h"
	19
	20	struct rmd160_ctx {
	21	u64 byte_count;
	22	u32 state[5];
caee1688	23	__le32 buffer[16];
c6580eb8 AKR	24	};
c6580eb8 AKR	25
ba6b0398 AKR	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
c6580eb8 AKR	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); \
c6580eb8 AKR	45	(a) = rol32((a), (s)) + (e); \
	46	(c) = rol32((c), 10); \
	47	}
	48
caee1688	49	static void rmd160_transform(u32 state, const __le32 in)
c6580eb8 AKR	50	{
	51	u32 aa, bb, cc, dd, ee, aaa, bbb, ccc, ddd, eee;
	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[0];
	62	bbb = state[1];
	63	ccc = state[2];
	64	ddd = state[3];
	65	eee = state[4];
	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 2: left lane" */
	86	ROUND(ee, aa, bb, cc, dd, F2, K2, in[7], 7);
	87	ROUND(dd, ee, aa, bb, cc, F2, K2, in[4], 6);
	88	ROUND(cc, dd, ee, aa, bb, F2, K2, in[13], 8);
	89	ROUND(bb, cc, dd, ee, aa, F2, K2, in[1], 13);
	90	ROUND(aa, bb, cc, dd, ee, F2, K2, in[10], 11);
	91	ROUND(ee, aa, bb, cc, dd, F2, K2, in[6], 9);
	92	ROUND(dd, ee, aa, bb, cc, F2, K2, in[15], 7);
	93	ROUND(cc, dd, ee, aa, bb, F2, K2, in[3], 15);
	94	ROUND(bb, cc, dd, ee, aa, F2, K2, in[12], 7);
	95	ROUND(aa, bb, cc, dd, ee, F2, K2, in[0], 12);
	96	ROUND(ee, aa, bb, cc, dd, F2, K2, in[9], 15);
	97	ROUND(dd, ee, aa, bb, cc, F2, K2, in[5], 9);
	98	ROUND(cc, dd, ee, aa, bb, F2, K2, in[2], 11);
	99	ROUND(bb, cc, dd, ee, aa, F2, K2, in[14], 7);
	100	ROUND(aa, bb, cc, dd, ee, F2, K2, in[11], 13);
	101	ROUND(ee, aa, bb, cc, dd, F2, K2, in[8], 12);
	102
	103	/* round 3: left lane" */
	104	ROUND(dd, ee, aa, bb, cc, F3, K3, in[3], 11);
	105	ROUND(cc, dd, ee, aa, bb, F3, K3, in[10], 13);
	106	ROUND(bb, cc, dd, ee, aa, F3, K3, in[14], 6);
	107	ROUND(aa, bb, cc, dd, ee, F3, K3, in[4], 7);
	108	ROUND(ee, aa, bb, cc, dd, F3, K3, in[9], 14);
	109	ROUND(dd, ee, aa, bb, cc, F3, K3, in[15], 9);
	110	ROUND(cc, dd, ee, aa, bb, F3, K3, in[8], 13);
	111	ROUND(bb, cc, dd, ee, aa, F3, K3, in[1], 15);
	112	ROUND(aa, bb, cc, dd, ee, F3, K3, in[2], 14);
	113	ROUND(ee, aa, bb, cc, dd, F3, K3, in[7], 8);
114	ROUND(dd, ee, aa, bb, cc, F3, K3, in[0], 13);
115	ROUND(cc, dd, ee, aa, bb, F3, K3, in[6], 6);
116	ROUND(bb, cc, dd, ee, aa, F3, K3, in[13], 5);
117	ROUND(aa, bb, cc, dd, ee, F3, K3, in[11], 12);
118	ROUND(ee, aa, bb, cc, dd, F3, K3, in[5], 7);
119	ROUND(dd, ee, aa, bb, cc, F3, K3, in[12], 5);
120
121	/* round 4: left lane" */
122	ROUND(cc, dd, ee, aa, bb, F4, K4, in[1], 11);
123	ROUND(bb, cc, dd, ee, aa, F4, K4, in[9], 12);
124	ROUND(aa, bb, cc, dd, ee, F4, K4, in[11], 14);
125	ROUND(ee, aa, bb, cc, dd, F4, K4, in[10], 15);
126	ROUND(dd, ee, aa, bb, cc, F4, K4, in[0], 14);
127	ROUND(cc, dd, ee, aa, bb, F4, K4, in[8], 15);
128	ROUND(bb, cc, dd, ee, aa, F4, K4, in[12], 9);
129	ROUND(aa, bb, cc, dd, ee, F4, K4, in[4], 8);
130	ROUND(ee, aa, bb, cc, dd, F4, K4, in[13], 9);
131	ROUND(dd, ee, aa, bb, cc, F4, K4, in[3], 14);
132	ROUND(cc, dd, ee, aa, bb, F4, K4, in[7], 5);
133	ROUND(bb, cc, dd, ee, aa, F4, K4, in[15], 6);
134	ROUND(aa, bb, cc, dd, ee, F4, K4, in[14], 8);
135	ROUND(ee, aa, bb, cc, dd, F4, K4, in[5], 6);
136	ROUND(dd, ee, aa, bb, cc, F4, K4, in[6], 5);
137	ROUND(cc, dd, ee, aa, bb, F4, K4, in[2], 12);
138
139	/* round 5: left lane" */
140	ROUND(bb, cc, dd, ee, aa, F5, K5, in[4], 9);
141	ROUND(aa, bb, cc, dd, ee, F5, K5, in[0], 15);
142	ROUND(ee, aa, bb, cc, dd, F5, K5, in[5], 5);
143	ROUND(dd, ee, aa, bb, cc, F5, K5, in[9], 11);
144	ROUND(cc, dd, ee, aa, bb, F5, K5, in[7], 6);
145	ROUND(bb, cc, dd, ee, aa, F5, K5, in[12], 8);
146	ROUND(aa, bb, cc, dd, ee, F5, K5, in[2], 13);
147	ROUND(ee, aa, bb, cc, dd, F5, K5, in[10], 12);
148	ROUND(dd, ee, aa, bb, cc, F5, K5, in[14], 5);
149	ROUND(cc, dd, ee, aa, bb, F5, K5, in[1], 12);
150	ROUND(bb, cc, dd, ee, aa, F5, K5, in[3], 13);
151	ROUND(aa, bb, cc, dd, ee, F5, K5, in[8], 14);
152	ROUND(ee, aa, bb, cc, dd, F5, K5, in[11], 11);
153	ROUND(dd, ee, aa, bb, cc, F5, K5, in[6], 8);
154	ROUND(cc, dd, ee, aa, bb, F5, K5, in[15], 5);
155	ROUND(bb, cc, dd, ee, aa, F5, K5, in[13], 6);
156
157	/* round 1: right lane */
158	ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[5], 8);
159	ROUND(eee, aaa, bbb, ccc, ddd, F5, KK1, in[14], 9);
160	ROUND(ddd, eee, aaa, bbb, ccc, F5, KK1, in[7], 9);
161	ROUND(ccc, ddd, eee, aaa, bbb, F5, KK1, in[0], 11);
162	ROUND(bbb, ccc, ddd, eee, aaa, F5, KK1, in[9], 13);
163	ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[2], 15);
164	ROUND(eee, aaa, bbb, ccc, ddd, F5, KK1, in[11], 15);
165	ROUND(ddd, eee, aaa, bbb, ccc, F5, KK1, in[4], 5);
166	ROUND(ccc, ddd, eee, aaa, bbb, F5, KK1, in[13], 7);
167	ROUND(bbb, ccc, ddd, eee, aaa, F5, KK1, in[6], 7);
168	ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[15], 8);
169	ROUND(eee, aaa, bbb, ccc, ddd, F5, KK1, in[8], 11);
170	ROUND(ddd, eee, aaa, bbb, ccc, F5, KK1, in[1], 14);
171	ROUND(ccc, ddd, eee, aaa, bbb, F5, KK1, in[10], 14);
172	ROUND(bbb, ccc, ddd, eee, aaa, F5, KK1, in[3], 12);
173	ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[12], 6);
174
175	/* round 2: right lane */
176	ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[6], 9);
177	ROUND(ddd, eee, aaa, bbb, ccc, F4, KK2, in[11], 13);
178	ROUND(ccc, ddd, eee, aaa, bbb, F4, KK2, in[3], 15);
179	ROUND(bbb, ccc, ddd, eee, aaa, F4, KK2, in[7], 7);
180	ROUND(aaa, bbb, ccc, ddd, eee, F4, KK2, in[0], 12);
181	ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[13], 8);
182	ROUND(ddd, eee, aaa, bbb, ccc, F4, KK2, in[5], 9);
183	ROUND(ccc, ddd, eee, aaa, bbb, F4, KK2, in[10], 11);
184	ROUND(bbb, ccc, ddd, eee, aaa, F4, KK2, in[14], 7);
185	ROUND(aaa, bbb, ccc, ddd, eee, F4, KK2, in[15], 7);
186	ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[8], 12);
187	ROUND(ddd, eee, aaa, bbb, ccc, F4, KK2, in[12], 7);
188	ROUND(ccc, ddd, eee, aaa, bbb, F4, KK2, in[4], 6);
189	ROUND(bbb, ccc, ddd, eee, aaa, F4, KK2, in[9], 15);
190	ROUND(aaa, bbb, ccc, ddd, eee, F4, KK2, in[1], 13);
191	ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[2], 11);
192
193	/* round 3: right lane */
194	ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[15], 9);
195	ROUND(ccc, ddd, eee, aaa, bbb, F3, KK3, in[5], 7);
196	ROUND(bbb, ccc, ddd, eee, aaa, F3, KK3, in[1], 15);
197	ROUND(aaa, bbb, ccc, ddd, eee, F3, KK3, in[3], 11);
198	ROUND(eee, aaa, bbb, ccc, ddd, F3, KK3, in[7], 8);
199	ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[14], 6);
200	ROUND(ccc, ddd, eee, aaa, bbb, F3, KK3, in[6], 6);
201	ROUND(bbb, ccc, ddd, eee, aaa, F3, KK3, in[9], 14);
202	ROUND(aaa, bbb, ccc, ddd, eee, F3, KK3, in[11], 12);
203	ROUND(eee, aaa, bbb, ccc, ddd, F3, KK3, in[8], 13);
204	ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[12], 5);
205	ROUND(ccc, ddd, eee, aaa, bbb, F3, KK3, in[2], 14);
206	ROUND(bbb, ccc, ddd, eee, aaa, F3, KK3, in[10], 13);
207	ROUND(aaa, bbb, ccc, ddd, eee, F3, KK3, in[0], 13);
208	ROUND(eee, aaa, bbb, ccc, ddd, F3, KK3, in[4], 7);
209	ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[13], 5);
210
211	/* round 4: right lane */
212	ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[8], 15);
213	ROUND(bbb, ccc, ddd, eee, aaa, F2, KK4, in[6], 5);
214	ROUND(aaa, bbb, ccc, ddd, eee, F2, KK4, in[4], 8);
215	ROUND(eee, aaa, bbb, ccc, ddd, F2, KK4, in[1], 11);
216	ROUND(ddd, eee, aaa, bbb, ccc, F2, KK4, in[3], 14);
217	ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[11], 14);
218	ROUND(bbb, ccc, ddd, eee, aaa, F2, KK4, in[15], 6);
219	ROUND(aaa, bbb, ccc, ddd, eee, F2, KK4, in[0], 14);
220	ROUND(eee, aaa, bbb, ccc, ddd, F2, KK4, in[5], 6);
221	ROUND(ddd, eee, aaa, bbb, ccc, F2, KK4, in[12], 9);
222	ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[2], 12);
223	ROUND(bbb, ccc, ddd, eee, aaa, F2, KK4, in[13], 9);
224	ROUND(aaa, bbb, ccc, ddd, eee, F2, KK4, in[9], 12);
225	ROUND(eee, aaa, bbb, ccc, ddd, F2, KK4, in[7], 5);
226	ROUND(ddd, eee, aaa, bbb, ccc, F2, KK4, in[10], 15);
227	ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[14], 8);
228
229	/* round 5: right lane */
230	ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[12], 8);
231	ROUND(aaa, bbb, ccc, ddd, eee, F1, KK5, in[15], 5);
232	ROUND(eee, aaa, bbb, ccc, ddd, F1, KK5, in[10], 12);
233	ROUND(ddd, eee, aaa, bbb, ccc, F1, KK5, in[4], 9);
234	ROUND(ccc, ddd, eee, aaa, bbb, F1, KK5, in[1], 12);
235	ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[5], 5);
236	ROUND(aaa, bbb, ccc, ddd, eee, F1, KK5, in[8], 14);
237	ROUND(eee, aaa, bbb, ccc, ddd, F1, KK5, in[7], 6);
238	ROUND(ddd, eee, aaa, bbb, ccc, F1, KK5, in[6], 8);
239	ROUND(ccc, ddd, eee, aaa, bbb, F1, KK5, in[2], 13);
240	ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[13], 6);
241	ROUND(aaa, bbb, ccc, ddd, eee, F1, KK5, in[14], 5);
242	ROUND(eee, aaa, bbb, ccc, ddd, F1, KK5, in[0], 15);
243	ROUND(ddd, eee, aaa, bbb, ccc, F1, KK5, in[3], 13);
244	ROUND(ccc, ddd, eee, aaa, bbb, F1, KK5, in[9], 11);
245	ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[11], 11);
246
247	/* combine results */
248	ddd += cc + state[1]; /* final result for state[0] */
249	state[1] = state[2] + dd + eee;
250	state[2] = state[3] + ee + aaa;
251	state[3] = state[4] + aa + bbb;
252	state[4] = state[0] + bb + ccc;
253	state[0] = ddd;
c6580eb8 AKR	254	}
c6580eb8 AKR	255
e5835fba	256	static int rmd160_init(struct shash_desc *desc)
c6580eb8	257	{
e5835fba	258	struct rmd160_ctx *rctx = shash_desc_ctx(desc);
c6580eb8 AKR	259
	260	rctx->byte_count = 0;
	261
	262	rctx->state[0] = RMD_H0;
	263	rctx->state[1] = RMD_H1;
	264	rctx->state[2] = RMD_H2;
	265	rctx->state[3] = RMD_H3;
	266	rctx->state[4] = RMD_H4;
	267
	268	memset(rctx->buffer, 0, sizeof(rctx->buffer));
e5835fba HX	269
e5835fba HX	270	return 0;
c6580eb8 AKR	271	}
c6580eb8 AKR	272
e5835fba HX	273	static int rmd160_update(struct shash_desc desc, const u8 data,
e5835fba HX	274	unsigned int len)
c6580eb8	275	{
e5835fba	276	struct rmd160_ctx *rctx = shash_desc_ctx(desc);
c6580eb8 AKR	277	const u32 avail = sizeof(rctx->buffer) - (rctx->byte_count & 0x3f);
	278
	279	rctx->byte_count += len;
	280
	281	/* Enough space in buffer? If so copy and we're done */
	282	if (avail > len) {
	283	memcpy((char *)rctx->buffer + (sizeof(rctx->buffer) - avail),
	284	data, len);
e5835fba	285	goto out;
c6580eb8 AKR	286	}
	287
	288	memcpy((char *)rctx->buffer + (sizeof(rctx->buffer) - avail),
	289	data, avail);
	290
c928a0cd	291	rmd160_transform(rctx->state, rctx->buffer);
c6580eb8 AKR	292	data += avail;
	293	len -= avail;
	294
	295	while (len >= sizeof(rctx->buffer)) {
	296	memcpy(rctx->buffer, data, sizeof(rctx->buffer));
c928a0cd	297	rmd160_transform(rctx->state, rctx->buffer);
c6580eb8 AKR	298	data += sizeof(rctx->buffer);
	299	len -= sizeof(rctx->buffer);
	300	}
	301
	302	memcpy(rctx->buffer, data, len);
e5835fba HX	303
	304	out:
	305	return 0;
c6580eb8 AKR	306	}
	307
	308	/* Add padding and return the message digest. */
e5835fba	309	static int rmd160_final(struct shash_desc desc, u8 out)
c6580eb8	310	{
e5835fba	311	struct rmd160_ctx *rctx = shash_desc_ctx(desc);
c928a0cd	312	u32 i, index, padlen;
caee1688 HH	313	__le64 bits;
caee1688 HH	314	__le32 dst = (__le32 )out;
c6580eb8	315	static const u8 padding[64] = { 0x80, };
c928a0cd AKR	316
c928a0cd AKR	317	bits = cpu_to_le64(rctx->byte_count << 3);
c6580eb8 AKR	318
	319	/* Pad out to 56 mod 64 */
	320	index = rctx->byte_count & 0x3f;
	321	padlen = (index < 56) ? (56 - index) : ((64+56) - index);
e5835fba	322	rmd160_update(desc, padding, padlen);
c6580eb8 AKR	323
c6580eb8 AKR	324	/* Append length */
e5835fba	325	rmd160_update(desc, (const u8 *)&bits, sizeof(bits));
c6580eb8 AKR	326
c6580eb8 AKR	327	/* Store state in digest */
c928a0cd	328	for (i = 0; i < 5; i++)
5cdcc22f	329	dst[i] = cpu_to_le32p(&rctx->state[i]);
c6580eb8 AKR	330
	331	/* Wipe context */
	332	memset(rctx, 0, sizeof(*rctx));
e5835fba HX	333
e5835fba HX	334	return 0;
c6580eb8 AKR	335	}
c6580eb8 AKR	336
e5835fba HX	337	static struct shash_alg alg = {
	338	.digestsize = RMD160_DIGEST_SIZE,
	339	.init = rmd160_init,
	340	.update = rmd160_update,
	341	.final = rmd160_final,
	342	.descsize = sizeof(struct rmd160_ctx),
	343	.base = {
	344	.cra_name = "rmd160",
d6ebf528	345	.cra_driver_name = "rmd160-generic",
e5835fba HX	346	.cra_blocksize = RMD160_BLOCK_SIZE,
	347	.cra_module = THIS_MODULE,
	348	}
c6580eb8 AKR	349	};
	350
	351	static int __init rmd160_mod_init(void)
	352	{
e5835fba	353	return crypto_register_shash(&alg);
c6580eb8 AKR	354	}
	355
	356	static void __exit rmd160_mod_fini(void)
	357	{
e5835fba	358	crypto_unregister_shash(&alg);
c6580eb8 AKR	359	}
c6580eb8 AKR	360
c4741b23	361	subsys_initcall(rmd160_mod_init);
c6580eb8 AKR	362	module_exit(rmd160_mod_fini);
	363
	364	MODULE_LICENSE("GPL");
3181c225	365	MODULE_AUTHOR("Adrian-Ken Rueegsegger <ken@codelabs.ch>");
c6580eb8	366	MODULE_DESCRIPTION("RIPEMD-160 Message Digest");
5d26a105	367	MODULE_ALIAS_CRYPTO("rmd160");