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/* |
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* Copyright (c) 2001 Markus Friedl. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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/* |
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* Preneel, Bosselaers, Dobbertin, "The Cryptographic Hash Function RIPEMD-160", |
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* RSA Laboratories, CryptoBytes, Volume 3, Number 2, Autumn 1997, |
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* ftp://ftp.rsasecurity.com/pub/cryptobytes/crypto3n2.pdf |
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*/ |
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#include <sys/types.h> |
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#include <endian.h> |
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#include <string.h> |
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#include <rmd160.h> |
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#define PUT_64BIT_LE(cp, value) do { \ |
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(cp)[7] = (value) >> 56; \ |
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(cp)[6] = (value) >> 48; \ |
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(cp)[5] = (value) >> 40; \ |
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(cp)[4] = (value) >> 32; \ |
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(cp)[3] = (value) >> 24; \ |
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(cp)[2] = (value) >> 16; \ |
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(cp)[1] = (value) >> 8; \ |
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(cp)[0] = (value); } while (0) |
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#define PUT_32BIT_LE(cp, value) do { \ |
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(cp)[3] = (value) >> 24; \ |
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(cp)[2] = (value) >> 16; \ |
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(cp)[1] = (value) >> 8; \ |
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(cp)[0] = (value); } while (0) |
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#define H0 0x67452301U |
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#define H1 0xEFCDAB89U |
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#define H2 0x98BADCFEU |
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#define H3 0x10325476U |
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#define H4 0xC3D2E1F0U |
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#define K0 0x00000000U |
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#define K1 0x5A827999U |
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#define K2 0x6ED9EBA1U |
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#define K3 0x8F1BBCDCU |
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#define K4 0xA953FD4EU |
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#define KK0 0x50A28BE6U |
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#define KK1 0x5C4DD124U |
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#define KK2 0x6D703EF3U |
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#define KK3 0x7A6D76E9U |
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#define KK4 0x00000000U |
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/* rotate x left n bits. */ |
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#define ROL(n, x) (((x) << (n)) | ((x) >> (32-(n)))) |
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#define F0(x, y, z) ((x) ^ (y) ^ (z)) |
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#define F1(x, y, z) (((x) & (y)) | ((~x) & (z))) |
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#define F2(x, y, z) (((x) | (~y)) ^ (z)) |
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#define F3(x, y, z) (((x) & (z)) | ((y) & (~z))) |
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#define F4(x, y, z) ((x) ^ ((y) | (~z))) |
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#define R(a, b, c, d, e, Fj, Kj, sj, rj) \ |
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do { \ |
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a = ROL(sj, a + Fj(b,c,d) + X(rj) + Kj) + e; \ |
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c = ROL(10, c); \ |
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} while(0) |
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#define X(i) x[i] |
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static u_int8_t PADDING[RMD160_BLOCK_LENGTH] = { |
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0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 |
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}; |
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void |
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RMD160Init(RMD160_CTX *ctx) |
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{ |
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ctx->count = 0; |
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ctx->state[0] = H0; |
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ctx->state[1] = H1; |
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ctx->state[2] = H2; |
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ctx->state[3] = H3; |
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ctx->state[4] = H4; |
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} |
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DEF_WEAK(RMD160Init); |
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void |
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RMD160Update(RMD160_CTX *ctx, const u_int8_t *input, size_t len) |
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{ |
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size_t have, off, need; |
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have = (ctx->count / 8) % RMD160_BLOCK_LENGTH; |
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need = RMD160_BLOCK_LENGTH - have; |
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ctx->count += 8 * len; |
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off = 0; |
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if (len >= need) { |
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if (have) { |
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memcpy(ctx->buffer + have, input, need); |
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RMD160Transform(ctx->state, ctx->buffer); |
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off = need; |
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have = 0; |
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} |
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/* now the buffer is empty */ |
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while (off + RMD160_BLOCK_LENGTH <= len) { |
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RMD160Transform(ctx->state, input+off); |
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off += RMD160_BLOCK_LENGTH; |
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} |
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} |
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if (off < len) |
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memcpy(ctx->buffer + have, input+off, len-off); |
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} |
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DEF_WEAK(RMD160Update); |
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void |
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RMD160Pad(RMD160_CTX *ctx) |
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{ |
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u_int8_t size[8]; |
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size_t padlen; |
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PUT_64BIT_LE(size, ctx->count); |
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/* |
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* pad to RMD160_BLOCK_LENGTH byte blocks, at least one byte from |
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* PADDING plus 8 bytes for the size |
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*/ |
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padlen = RMD160_BLOCK_LENGTH - ((ctx->count / 8) % RMD160_BLOCK_LENGTH); |
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if (padlen < 1 + 8) |
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padlen += RMD160_BLOCK_LENGTH; |
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RMD160Update(ctx, PADDING, padlen - 8); /* padlen - 8 <= 64 */ |
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RMD160Update(ctx, size, 8); |
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} |
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DEF_WEAK(RMD160Pad); |
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void |
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RMD160Final(u_int8_t digest[RMD160_DIGEST_LENGTH], RMD160_CTX *ctx) |
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{ |
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int i; |
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RMD160Pad(ctx); |
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for (i = 0; i < 5; i++) |
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PUT_32BIT_LE(digest + i*4, ctx->state[i]); |
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explicit_bzero(ctx, sizeof (*ctx)); |
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} |
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DEF_WEAK(RMD160Final); |
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void |
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RMD160Transform(u_int32_t state[5], const u_int8_t block[RMD160_BLOCK_LENGTH]) |
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{ |
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u_int32_t a, b, c, d, e, aa, bb, cc, dd, ee, t, x[16]; |
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#if BYTE_ORDER == LITTLE_ENDIAN |
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memcpy(x, block, RMD160_BLOCK_LENGTH); |
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#else |
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int i; |
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for (i = 0; i < 16; i++) |
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x[i] = (u_int32_t)( |
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(u_int32_t)(block[i*4 + 0]) | |
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(u_int32_t)(block[i*4 + 1]) << 8 | |
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(u_int32_t)(block[i*4 + 2]) << 16 | |
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(u_int32_t)(block[i*4 + 3]) << 24); |
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#endif |
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a = state[0]; |
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b = state[1]; |
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c = state[2]; |
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d = state[3]; |
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e = state[4]; |
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/* Round 1 */ |
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R(a, b, c, d, e, F0, K0, 11, 0); |
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R(e, a, b, c, d, F0, K0, 14, 1); |
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R(d, e, a, b, c, F0, K0, 15, 2); |
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R(c, d, e, a, b, F0, K0, 12, 3); |
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R(b, c, d, e, a, F0, K0, 5, 4); |
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R(a, b, c, d, e, F0, K0, 8, 5); |
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R(e, a, b, c, d, F0, K0, 7, 6); |
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R(d, e, a, b, c, F0, K0, 9, 7); |
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R(c, d, e, a, b, F0, K0, 11, 8); |
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R(b, c, d, e, a, F0, K0, 13, 9); |
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R(a, b, c, d, e, F0, K0, 14, 10); |
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R(e, a, b, c, d, F0, K0, 15, 11); |
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R(d, e, a, b, c, F0, K0, 6, 12); |
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R(c, d, e, a, b, F0, K0, 7, 13); |
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R(b, c, d, e, a, F0, K0, 9, 14); |
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R(a, b, c, d, e, F0, K0, 8, 15); /* #15 */ |
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/* Round 2 */ |
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R(e, a, b, c, d, F1, K1, 7, 7); |
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R(d, e, a, b, c, F1, K1, 6, 4); |
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R(c, d, e, a, b, F1, K1, 8, 13); |
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R(b, c, d, e, a, F1, K1, 13, 1); |
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R(a, b, c, d, e, F1, K1, 11, 10); |
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R(e, a, b, c, d, F1, K1, 9, 6); |
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R(d, e, a, b, c, F1, K1, 7, 15); |
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R(c, d, e, a, b, F1, K1, 15, 3); |
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R(b, c, d, e, a, F1, K1, 7, 12); |
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R(a, b, c, d, e, F1, K1, 12, 0); |
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R(e, a, b, c, d, F1, K1, 15, 9); |
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R(d, e, a, b, c, F1, K1, 9, 5); |
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R(c, d, e, a, b, F1, K1, 11, 2); |
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R(b, c, d, e, a, F1, K1, 7, 14); |
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R(a, b, c, d, e, F1, K1, 13, 11); |
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R(e, a, b, c, d, F1, K1, 12, 8); /* #31 */ |
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/* Round 3 */ |
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R(d, e, a, b, c, F2, K2, 11, 3); |
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R(c, d, e, a, b, F2, K2, 13, 10); |
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R(b, c, d, e, a, F2, K2, 6, 14); |
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R(a, b, c, d, e, F2, K2, 7, 4); |
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R(e, a, b, c, d, F2, K2, 14, 9); |
227 |
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R(d, e, a, b, c, F2, K2, 9, 15); |
228 |
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R(c, d, e, a, b, F2, K2, 13, 8); |
229 |
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R(b, c, d, e, a, F2, K2, 15, 1); |
230 |
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R(a, b, c, d, e, F2, K2, 14, 2); |
231 |
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R(e, a, b, c, d, F2, K2, 8, 7); |
232 |
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R(d, e, a, b, c, F2, K2, 13, 0); |
233 |
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R(c, d, e, a, b, F2, K2, 6, 6); |
234 |
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R(b, c, d, e, a, F2, K2, 5, 13); |
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R(a, b, c, d, e, F2, K2, 12, 11); |
236 |
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R(e, a, b, c, d, F2, K2, 7, 5); |
237 |
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R(d, e, a, b, c, F2, K2, 5, 12); /* #47 */ |
238 |
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/* Round 4 */ |
239 |
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R(c, d, e, a, b, F3, K3, 11, 1); |
240 |
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R(b, c, d, e, a, F3, K3, 12, 9); |
241 |
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R(a, b, c, d, e, F3, K3, 14, 11); |
242 |
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R(e, a, b, c, d, F3, K3, 15, 10); |
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R(d, e, a, b, c, F3, K3, 14, 0); |
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R(c, d, e, a, b, F3, K3, 15, 8); |
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R(b, c, d, e, a, F3, K3, 9, 12); |
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R(a, b, c, d, e, F3, K3, 8, 4); |
247 |
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R(e, a, b, c, d, F3, K3, 9, 13); |
248 |
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R(d, e, a, b, c, F3, K3, 14, 3); |
249 |
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R(c, d, e, a, b, F3, K3, 5, 7); |
250 |
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R(b, c, d, e, a, F3, K3, 6, 15); |
251 |
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R(a, b, c, d, e, F3, K3, 8, 14); |
252 |
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R(e, a, b, c, d, F3, K3, 6, 5); |
253 |
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R(d, e, a, b, c, F3, K3, 5, 6); |
254 |
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R(c, d, e, a, b, F3, K3, 12, 2); /* #63 */ |
255 |
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/* Round 5 */ |
256 |
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R(b, c, d, e, a, F4, K4, 9, 4); |
257 |
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R(a, b, c, d, e, F4, K4, 15, 0); |
258 |
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R(e, a, b, c, d, F4, K4, 5, 5); |
259 |
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R(d, e, a, b, c, F4, K4, 11, 9); |
260 |
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R(c, d, e, a, b, F4, K4, 6, 7); |
261 |
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R(b, c, d, e, a, F4, K4, 8, 12); |
262 |
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R(a, b, c, d, e, F4, K4, 13, 2); |
263 |
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R(e, a, b, c, d, F4, K4, 12, 10); |
264 |
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R(d, e, a, b, c, F4, K4, 5, 14); |
265 |
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R(c, d, e, a, b, F4, K4, 12, 1); |
266 |
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R(b, c, d, e, a, F4, K4, 13, 3); |
267 |
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R(a, b, c, d, e, F4, K4, 14, 8); |
268 |
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R(e, a, b, c, d, F4, K4, 11, 11); |
269 |
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R(d, e, a, b, c, F4, K4, 8, 6); |
270 |
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R(c, d, e, a, b, F4, K4, 5, 15); |
271 |
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R(b, c, d, e, a, F4, K4, 6, 13); /* #79 */ |
272 |
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273 |
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aa = a ; bb = b; cc = c; dd = d; ee = e; |
274 |
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275 |
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a = state[0]; |
276 |
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b = state[1]; |
277 |
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c = state[2]; |
278 |
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d = state[3]; |
279 |
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e = state[4]; |
280 |
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281 |
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/* Parallel round 1 */ |
282 |
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R(a, b, c, d, e, F4, KK0, 8, 5); |
283 |
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R(e, a, b, c, d, F4, KK0, 9, 14); |
284 |
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R(d, e, a, b, c, F4, KK0, 9, 7); |
285 |
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R(c, d, e, a, b, F4, KK0, 11, 0); |
286 |
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R(b, c, d, e, a, F4, KK0, 13, 9); |
287 |
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R(a, b, c, d, e, F4, KK0, 15, 2); |
288 |
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R(e, a, b, c, d, F4, KK0, 15, 11); |
289 |
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R(d, e, a, b, c, F4, KK0, 5, 4); |
290 |
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R(c, d, e, a, b, F4, KK0, 7, 13); |
291 |
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R(b, c, d, e, a, F4, KK0, 7, 6); |
292 |
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R(a, b, c, d, e, F4, KK0, 8, 15); |
293 |
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R(e, a, b, c, d, F4, KK0, 11, 8); |
294 |
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R(d, e, a, b, c, F4, KK0, 14, 1); |
295 |
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R(c, d, e, a, b, F4, KK0, 14, 10); |
296 |
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R(b, c, d, e, a, F4, KK0, 12, 3); |
297 |
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R(a, b, c, d, e, F4, KK0, 6, 12); /* #15 */ |
298 |
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/* Parallel round 2 */ |
299 |
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R(e, a, b, c, d, F3, KK1, 9, 6); |
300 |
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R(d, e, a, b, c, F3, KK1, 13, 11); |
301 |
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R(c, d, e, a, b, F3, KK1, 15, 3); |
302 |
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R(b, c, d, e, a, F3, KK1, 7, 7); |
303 |
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R(a, b, c, d, e, F3, KK1, 12, 0); |
304 |
|
|
R(e, a, b, c, d, F3, KK1, 8, 13); |
305 |
|
|
R(d, e, a, b, c, F3, KK1, 9, 5); |
306 |
|
|
R(c, d, e, a, b, F3, KK1, 11, 10); |
307 |
|
|
R(b, c, d, e, a, F3, KK1, 7, 14); |
308 |
|
|
R(a, b, c, d, e, F3, KK1, 7, 15); |
309 |
|
|
R(e, a, b, c, d, F3, KK1, 12, 8); |
310 |
|
|
R(d, e, a, b, c, F3, KK1, 7, 12); |
311 |
|
|
R(c, d, e, a, b, F3, KK1, 6, 4); |
312 |
|
|
R(b, c, d, e, a, F3, KK1, 15, 9); |
313 |
|
|
R(a, b, c, d, e, F3, KK1, 13, 1); |
314 |
|
|
R(e, a, b, c, d, F3, KK1, 11, 2); /* #31 */ |
315 |
|
|
/* Parallel round 3 */ |
316 |
|
|
R(d, e, a, b, c, F2, KK2, 9, 15); |
317 |
|
|
R(c, d, e, a, b, F2, KK2, 7, 5); |
318 |
|
|
R(b, c, d, e, a, F2, KK2, 15, 1); |
319 |
|
|
R(a, b, c, d, e, F2, KK2, 11, 3); |
320 |
|
|
R(e, a, b, c, d, F2, KK2, 8, 7); |
321 |
|
|
R(d, e, a, b, c, F2, KK2, 6, 14); |
322 |
|
|
R(c, d, e, a, b, F2, KK2, 6, 6); |
323 |
|
|
R(b, c, d, e, a, F2, KK2, 14, 9); |
324 |
|
|
R(a, b, c, d, e, F2, KK2, 12, 11); |
325 |
|
|
R(e, a, b, c, d, F2, KK2, 13, 8); |
326 |
|
|
R(d, e, a, b, c, F2, KK2, 5, 12); |
327 |
|
|
R(c, d, e, a, b, F2, KK2, 14, 2); |
328 |
|
|
R(b, c, d, e, a, F2, KK2, 13, 10); |
329 |
|
|
R(a, b, c, d, e, F2, KK2, 13, 0); |
330 |
|
|
R(e, a, b, c, d, F2, KK2, 7, 4); |
331 |
|
|
R(d, e, a, b, c, F2, KK2, 5, 13); /* #47 */ |
332 |
|
|
/* Parallel round 4 */ |
333 |
|
|
R(c, d, e, a, b, F1, KK3, 15, 8); |
334 |
|
|
R(b, c, d, e, a, F1, KK3, 5, 6); |
335 |
|
|
R(a, b, c, d, e, F1, KK3, 8, 4); |
336 |
|
|
R(e, a, b, c, d, F1, KK3, 11, 1); |
337 |
|
|
R(d, e, a, b, c, F1, KK3, 14, 3); |
338 |
|
|
R(c, d, e, a, b, F1, KK3, 14, 11); |
339 |
|
|
R(b, c, d, e, a, F1, KK3, 6, 15); |
340 |
|
|
R(a, b, c, d, e, F1, KK3, 14, 0); |
341 |
|
|
R(e, a, b, c, d, F1, KK3, 6, 5); |
342 |
|
|
R(d, e, a, b, c, F1, KK3, 9, 12); |
343 |
|
|
R(c, d, e, a, b, F1, KK3, 12, 2); |
344 |
|
|
R(b, c, d, e, a, F1, KK3, 9, 13); |
345 |
|
|
R(a, b, c, d, e, F1, KK3, 12, 9); |
346 |
|
|
R(e, a, b, c, d, F1, KK3, 5, 7); |
347 |
|
|
R(d, e, a, b, c, F1, KK3, 15, 10); |
348 |
|
|
R(c, d, e, a, b, F1, KK3, 8, 14); /* #63 */ |
349 |
|
|
/* Parallel round 5 */ |
350 |
|
|
R(b, c, d, e, a, F0, KK4, 8, 12); |
351 |
|
|
R(a, b, c, d, e, F0, KK4, 5, 15); |
352 |
|
|
R(e, a, b, c, d, F0, KK4, 12, 10); |
353 |
|
|
R(d, e, a, b, c, F0, KK4, 9, 4); |
354 |
|
|
R(c, d, e, a, b, F0, KK4, 12, 1); |
355 |
|
|
R(b, c, d, e, a, F0, KK4, 5, 5); |
356 |
|
|
R(a, b, c, d, e, F0, KK4, 14, 8); |
357 |
|
|
R(e, a, b, c, d, F0, KK4, 6, 7); |
358 |
|
|
R(d, e, a, b, c, F0, KK4, 8, 6); |
359 |
|
|
R(c, d, e, a, b, F0, KK4, 13, 2); |
360 |
|
|
R(b, c, d, e, a, F0, KK4, 6, 13); |
361 |
|
|
R(a, b, c, d, e, F0, KK4, 5, 14); |
362 |
|
|
R(e, a, b, c, d, F0, KK4, 15, 0); |
363 |
|
|
R(d, e, a, b, c, F0, KK4, 13, 3); |
364 |
|
|
R(c, d, e, a, b, F0, KK4, 11, 9); |
365 |
|
|
R(b, c, d, e, a, F0, KK4, 11, 11); /* #79 */ |
366 |
|
|
|
367 |
|
|
t = state[1] + cc + d; |
368 |
|
|
state[1] = state[2] + dd + e; |
369 |
|
|
state[2] = state[3] + ee + a; |
370 |
|
|
state[3] = state[4] + aa + b; |
371 |
|
|
state[4] = state[0] + bb + c; |
372 |
|
|
state[0] = t; |
373 |
|
|
} |
374 |
|
|
DEF_WEAK(RMD160Transform); |