+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Cryptographic API.
- *
- * RIPEMD-256 - 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 rmd256_ctx {
- u64 byte_count;
- u32 state[8];
- __le32 buffer[16];
-};
-
-#define K1 RMD_K1
-#define K2 RMD_K2
-#define K3 RMD_K3
-#define K4 RMD_K4
-#define KK1 RMD_K6
-#define KK2 RMD_K7
-#define KK3 RMD_K8
-#define KK4 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 ROUND(a, b, c, d, f, k, x, s) { \
- (a) += f((b), (c), (d)) + le32_to_cpup(&(x)) + (k); \
- (a) = rol32((a), (s)); \
-}
-
-static void rmd256_transform(u32 *state, const __le32 *in)
-{
- u32 aa, bb, cc, dd, aaa, bbb, ccc, ddd;
-
- /* Initialize left lane */
- aa = state[0];
- bb = state[1];
- cc = state[2];
- dd = state[3];
-
- /* Initialize right lane */
- aaa = state[4];
- bbb = state[5];
- ccc = state[6];
- ddd = state[7];
-
- /* round 1: left lane */
- ROUND(aa, bb, cc, dd, F1, K1, in[0], 11);
- ROUND(dd, aa, bb, cc, F1, K1, in[1], 14);
- ROUND(cc, dd, aa, bb, F1, K1, in[2], 15);
- ROUND(bb, cc, dd, aa, F1, K1, in[3], 12);
- ROUND(aa, bb, cc, dd, F1, K1, in[4], 5);
- ROUND(dd, aa, bb, cc, F1, K1, in[5], 8);
- ROUND(cc, dd, aa, bb, F1, K1, in[6], 7);
- ROUND(bb, cc, dd, aa, F1, K1, in[7], 9);
- ROUND(aa, bb, cc, dd, F1, K1, in[8], 11);
- ROUND(dd, aa, bb, cc, F1, K1, in[9], 13);
- ROUND(cc, dd, aa, bb, F1, K1, in[10], 14);
- ROUND(bb, cc, dd, aa, F1, K1, in[11], 15);
- ROUND(aa, bb, cc, dd, F1, K1, in[12], 6);
- ROUND(dd, aa, bb, cc, F1, K1, in[13], 7);
- ROUND(cc, dd, aa, bb, F1, K1, in[14], 9);
- ROUND(bb, cc, dd, aa, F1, K1, in[15], 8);
-
- /* round 1: right lane */
- ROUND(aaa, bbb, ccc, ddd, F4, KK1, in[5], 8);
- ROUND(ddd, aaa, bbb, ccc, F4, KK1, in[14], 9);
- ROUND(ccc, ddd, aaa, bbb, F4, KK1, in[7], 9);
- ROUND(bbb, ccc, ddd, aaa, F4, KK1, in[0], 11);
- ROUND(aaa, bbb, ccc, ddd, F4, KK1, in[9], 13);
- ROUND(ddd, aaa, bbb, ccc, F4, KK1, in[2], 15);
- ROUND(ccc, ddd, aaa, bbb, F4, KK1, in[11], 15);
- ROUND(bbb, ccc, ddd, aaa, F4, KK1, in[4], 5);
- ROUND(aaa, bbb, ccc, ddd, F4, KK1, in[13], 7);
- ROUND(ddd, aaa, bbb, ccc, F4, KK1, in[6], 7);
- ROUND(ccc, ddd, aaa, bbb, F4, KK1, in[15], 8);
- ROUND(bbb, ccc, ddd, aaa, F4, KK1, in[8], 11);
- ROUND(aaa, bbb, ccc, ddd, F4, KK1, in[1], 14);
- ROUND(ddd, aaa, bbb, ccc, F4, KK1, in[10], 14);
- ROUND(ccc, ddd, aaa, bbb, F4, KK1, in[3], 12);
- ROUND(bbb, ccc, ddd, aaa, F4, KK1, in[12], 6);
-
- /* Swap contents of "a" registers */
- swap(aa, aaa);
-
- /* round 2: left lane */
- ROUND(aa, bb, cc, dd, F2, K2, in[7], 7);
- ROUND(dd, aa, bb, cc, F2, K2, in[4], 6);
- ROUND(cc, dd, aa, bb, F2, K2, in[13], 8);
- ROUND(bb, cc, dd, aa, F2, K2, in[1], 13);
- ROUND(aa, bb, cc, dd, F2, K2, in[10], 11);
- ROUND(dd, aa, bb, cc, F2, K2, in[6], 9);
- ROUND(cc, dd, aa, bb, F2, K2, in[15], 7);
- ROUND(bb, cc, dd, aa, F2, K2, in[3], 15);
- ROUND(aa, bb, cc, dd, F2, K2, in[12], 7);
- ROUND(dd, aa, bb, cc, F2, K2, in[0], 12);
- ROUND(cc, dd, aa, bb, F2, K2, in[9], 15);
- ROUND(bb, cc, dd, aa, F2, K2, in[5], 9);
- ROUND(aa, bb, cc, dd, F2, K2, in[2], 11);
- ROUND(dd, aa, bb, cc, F2, K2, in[14], 7);
- ROUND(cc, dd, aa, bb, F2, K2, in[11], 13);
- ROUND(bb, cc, dd, aa, F2, K2, in[8], 12);
-
- /* round 2: right lane */
- ROUND(aaa, bbb, ccc, ddd, F3, KK2, in[6], 9);
- ROUND(ddd, aaa, bbb, ccc, F3, KK2, in[11], 13);
- ROUND(ccc, ddd, aaa, bbb, F3, KK2, in[3], 15);
- ROUND(bbb, ccc, ddd, aaa, F3, KK2, in[7], 7);
- ROUND(aaa, bbb, ccc, ddd, F3, KK2, in[0], 12);
- ROUND(ddd, aaa, bbb, ccc, F3, KK2, in[13], 8);
- ROUND(ccc, ddd, aaa, bbb, F3, KK2, in[5], 9);
- ROUND(bbb, ccc, ddd, aaa, F3, KK2, in[10], 11);
- ROUND(aaa, bbb, ccc, ddd, F3, KK2, in[14], 7);
- ROUND(ddd, aaa, bbb, ccc, F3, KK2, in[15], 7);
- ROUND(ccc, ddd, aaa, bbb, F3, KK2, in[8], 12);
- ROUND(bbb, ccc, ddd, aaa, F3, KK2, in[12], 7);
- ROUND(aaa, bbb, ccc, ddd, F3, KK2, in[4], 6);
- ROUND(ddd, aaa, bbb, ccc, F3, KK2, in[9], 15);
- ROUND(ccc, ddd, aaa, bbb, F3, KK2, in[1], 13);
- ROUND(bbb, ccc, ddd, aaa, F3, KK2, in[2], 11);
-
- /* Swap contents of "b" registers */
- swap(bb, bbb);
-
- /* round 3: left lane */
- ROUND(aa, bb, cc, dd, F3, K3, in[3], 11);
- ROUND(dd, aa, bb, cc, F3, K3, in[10], 13);
- ROUND(cc, dd, aa, bb, F3, K3, in[14], 6);
- ROUND(bb, cc, dd, aa, F3, K3, in[4], 7);
- ROUND(aa, bb, cc, dd, F3, K3, in[9], 14);
- ROUND(dd, aa, bb, cc, F3, K3, in[15], 9);
- ROUND(cc, dd, aa, bb, F3, K3, in[8], 13);
- ROUND(bb, cc, dd, aa, F3, K3, in[1], 15);
- ROUND(aa, bb, cc, dd, F3, K3, in[2], 14);
- ROUND(dd, aa, bb, cc, F3, K3, in[7], 8);
- ROUND(cc, dd, aa, bb, F3, K3, in[0], 13);
- ROUND(bb, cc, dd, aa, F3, K3, in[6], 6);
- ROUND(aa, bb, cc, dd, F3, K3, in[13], 5);
- ROUND(dd, aa, bb, cc, F3, K3, in[11], 12);
- ROUND(cc, dd, aa, bb, F3, K3, in[5], 7);
- ROUND(bb, cc, dd, aa, F3, K3, in[12], 5);
-
- /* round 3: right lane */
- ROUND(aaa, bbb, ccc, ddd, F2, KK3, in[15], 9);
- ROUND(ddd, aaa, bbb, ccc, F2, KK3, in[5], 7);
- ROUND(ccc, ddd, aaa, bbb, F2, KK3, in[1], 15);
- ROUND(bbb, ccc, ddd, aaa, F2, KK3, in[3], 11);
- ROUND(aaa, bbb, ccc, ddd, F2, KK3, in[7], 8);
- ROUND(ddd, aaa, bbb, ccc, F2, KK3, in[14], 6);
- ROUND(ccc, ddd, aaa, bbb, F2, KK3, in[6], 6);
- ROUND(bbb, ccc, ddd, aaa, F2, KK3, in[9], 14);
- ROUND(aaa, bbb, ccc, ddd, F2, KK3, in[11], 12);
- ROUND(ddd, aaa, bbb, ccc, F2, KK3, in[8], 13);
- ROUND(ccc, ddd, aaa, bbb, F2, KK3, in[12], 5);
- ROUND(bbb, ccc, ddd, aaa, F2, KK3, in[2], 14);
- ROUND(aaa, bbb, ccc, ddd, F2, KK3, in[10], 13);
- ROUND(ddd, aaa, bbb, ccc, F2, KK3, in[0], 13);
- ROUND(ccc, ddd, aaa, bbb, F2, KK3, in[4], 7);
- ROUND(bbb, ccc, ddd, aaa, F2, KK3, in[13], 5);
-
- /* Swap contents of "c" registers */
- swap(cc, ccc);
-
- /* round 4: left lane */
- ROUND(aa, bb, cc, dd, F4, K4, in[1], 11);
- ROUND(dd, aa, bb, cc, F4, K4, in[9], 12);
- ROUND(cc, dd, aa, bb, F4, K4, in[11], 14);
- ROUND(bb, cc, dd, aa, F4, K4, in[10], 15);
- ROUND(aa, bb, cc, dd, F4, K4, in[0], 14);
- ROUND(dd, aa, bb, cc, F4, K4, in[8], 15);
- ROUND(cc, dd, aa, bb, F4, K4, in[12], 9);
- ROUND(bb, cc, dd, aa, F4, K4, in[4], 8);
- ROUND(aa, bb, cc, dd, F4, K4, in[13], 9);
- ROUND(dd, aa, bb, cc, F4, K4, in[3], 14);
- ROUND(cc, dd, aa, bb, F4, K4, in[7], 5);
- ROUND(bb, cc, dd, aa, F4, K4, in[15], 6);
- ROUND(aa, bb, cc, dd, F4, K4, in[14], 8);
- ROUND(dd, aa, bb, cc, F4, K4, in[5], 6);
- ROUND(cc, dd, aa, bb, F4, K4, in[6], 5);
- ROUND(bb, cc, dd, aa, F4, K4, in[2], 12);
-
- /* round 4: right lane */
- ROUND(aaa, bbb, ccc, ddd, F1, KK4, in[8], 15);
- ROUND(ddd, aaa, bbb, ccc, F1, KK4, in[6], 5);
- ROUND(ccc, ddd, aaa, bbb, F1, KK4, in[4], 8);
- ROUND(bbb, ccc, ddd, aaa, F1, KK4, in[1], 11);
- ROUND(aaa, bbb, ccc, ddd, F1, KK4, in[3], 14);
- ROUND(ddd, aaa, bbb, ccc, F1, KK4, in[11], 14);
- ROUND(ccc, ddd, aaa, bbb, F1, KK4, in[15], 6);
- ROUND(bbb, ccc, ddd, aaa, F1, KK4, in[0], 14);
- ROUND(aaa, bbb, ccc, ddd, F1, KK4, in[5], 6);
- ROUND(ddd, aaa, bbb, ccc, F1, KK4, in[12], 9);
- ROUND(ccc, ddd, aaa, bbb, F1, KK4, in[2], 12);
- ROUND(bbb, ccc, ddd, aaa, F1, KK4, in[13], 9);
- ROUND(aaa, bbb, ccc, ddd, F1, KK4, in[9], 12);
- ROUND(ddd, aaa, bbb, ccc, F1, KK4, in[7], 5);
- ROUND(ccc, ddd, aaa, bbb, F1, KK4, in[10], 15);
- ROUND(bbb, ccc, ddd, aaa, F1, KK4, in[14], 8);
-
- /* Swap contents of "d" registers */
- swap(dd, ddd);
-
- /* combine results */
- state[0] += aa;
- state[1] += bb;
- state[2] += cc;
- state[3] += dd;
- state[4] += aaa;
- state[5] += bbb;
- state[6] += ccc;
- state[7] += ddd;
-}
-
-static int rmd256_init(struct shash_desc *desc)
-{
- struct rmd256_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_H5;
- rctx->state[5] = RMD_H6;
- rctx->state[6] = RMD_H7;
- rctx->state[7] = RMD_H8;
-
- memset(rctx->buffer, 0, sizeof(rctx->buffer));
-
- return 0;
-}
-
-static int rmd256_update(struct shash_desc *desc, const u8 *data,
- unsigned int len)
-{
- struct rmd256_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);
-
- rmd256_transform(rctx->state, rctx->buffer);
- data += avail;
- len -= avail;
-
- while (len >= sizeof(rctx->buffer)) {
- memcpy(rctx->buffer, data, sizeof(rctx->buffer));
- rmd256_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 rmd256_final(struct shash_desc *desc, u8 *out)
-{
- struct rmd256_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);
- rmd256_update(desc, padding, padlen);
-
- /* Append length */
- rmd256_update(desc, (const u8 *)&bits, sizeof(bits));
-
- /* Store state in digest */
- for (i = 0; i < 8; i++)
- dst[i] = cpu_to_le32p(&rctx->state[i]);
-
- /* Wipe context */
- memset(rctx, 0, sizeof(*rctx));
-
- return 0;
-}
-
-static struct shash_alg alg = {
- .digestsize = RMD256_DIGEST_SIZE,
- .init = rmd256_init,
- .update = rmd256_update,
- .final = rmd256_final,
- .descsize = sizeof(struct rmd256_ctx),
- .base = {
- .cra_name = "rmd256",
- .cra_driver_name = "rmd256-generic",
- .cra_blocksize = RMD256_BLOCK_SIZE,
- .cra_module = THIS_MODULE,
- }
-};
-
-static int __init rmd256_mod_init(void)
-{
- return crypto_register_shash(&alg);
-}
-
-static void __exit rmd256_mod_fini(void)
-{
- crypto_unregister_shash(&alg);
-}
-
-subsys_initcall(rmd256_mod_init);
-module_exit(rmd256_mod_fini);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Adrian-Ken Rueegsegger <ken@codelabs.ch>");
-MODULE_DESCRIPTION("RIPEMD-256 Message Digest");
-MODULE_ALIAS_CRYPTO("rmd256");
projects / linux-2.6-block.git / blobdiff