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/* rmd160.c - RIPE-MD160
* Copyright (C) 1998, 2001, 2002, 2003 Free Software Foundation, Inc.
*
* This file is part of Libgcrypt.
*
* Libgcrypt is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* Libgcrypt is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "g10lib.h"
#include "hash-common.h"
#include "cipher.h" /* Only used for the rmd160_hash_buffer() prototype. */
#include "bithelp.h"
#include "bufhelp.h"
/*********************************
* RIPEMD-160 is not patented, see (as of 25.10.97)
* Note that the code uses Little Endian byteorder, which is good for
* 386 etc, but we must add some conversion when used on a big endian box.
*
*
* Pseudo-code for RIPEMD-160
*
* RIPEMD-160 is an iterative hash function that operates on 32-bit words.
* The round function takes as input a 5-word chaining variable and a 16-word
* message block and maps this to a new chaining variable. All operations are
* defined on 32-bit words. Padding is identical to that of MD4.
*
*
* RIPEMD-160: definitions
*
*
* nonlinear functions at bit level: exor, mux, -, mux, -
*
* f(j, x, y, z) = x XOR y XOR z (0 <= j <= 15)
* f(j, x, y, z) = (x AND y) OR (NOT(x) AND z) (16 <= j <= 31)
* f(j, x, y, z) = (x OR NOT(y)) XOR z (32 <= j <= 47)
* f(j, x, y, z) = (x AND z) OR (y AND NOT(z)) (48 <= j <= 63)
* f(j, x, y, z) = x XOR (y OR NOT(z)) (64 <= j <= 79)
*
*
* added constants (hexadecimal)
*
* K(j) = 0x00000000 (0 <= j <= 15)
* K(j) = 0x5A827999 (16 <= j <= 31) int(2**30 x sqrt(2))
* K(j) = 0x6ED9EBA1 (32 <= j <= 47) int(2**30 x sqrt(3))
* K(j) = 0x8F1BBCDC (48 <= j <= 63) int(2**30 x sqrt(5))
* K(j) = 0xA953FD4E (64 <= j <= 79) int(2**30 x sqrt(7))
* K'(j) = 0x50A28BE6 (0 <= j <= 15) int(2**30 x cbrt(2))
* K'(j) = 0x5C4DD124 (16 <= j <= 31) int(2**30 x cbrt(3))
* K'(j) = 0x6D703EF3 (32 <= j <= 47) int(2**30 x cbrt(5))
* K'(j) = 0x7A6D76E9 (48 <= j <= 63) int(2**30 x cbrt(7))
* K'(j) = 0x00000000 (64 <= j <= 79)
*
*
* selection of message word
*
* r(j) = j (0 <= j <= 15)
* r(16..31) = 7, 4, 13, 1, 10, 6, 15, 3, 12, 0, 9, 5, 2, 14, 11, 8
* r(32..47) = 3, 10, 14, 4, 9, 15, 8, 1, 2, 7, 0, 6, 13, 11, 5, 12
* r(48..63) = 1, 9, 11, 10, 0, 8, 12, 4, 13, 3, 7, 15, 14, 5, 6, 2
* r(64..79) = 4, 0, 5, 9, 7, 12, 2, 10, 14, 1, 3, 8, 11, 6, 15, 13
* r0(0..15) = 5, 14, 7, 0, 9, 2, 11, 4, 13, 6, 15, 8, 1, 10, 3, 12
* r0(16..31)= 6, 11, 3, 7, 0, 13, 5, 10, 14, 15, 8, 12, 4, 9, 1, 2
* r0(32..47)= 15, 5, 1, 3, 7, 14, 6, 9, 11, 8, 12, 2, 10, 0, 4, 13
* r0(48..63)= 8, 6, 4, 1, 3, 11, 15, 0, 5, 12, 2, 13, 9, 7, 10, 14
* r0(64..79)= 12, 15, 10, 4, 1, 5, 8, 7, 6, 2, 13, 14, 0, 3, 9, 11
*
*
* amount for rotate left (rol)
*
* s(0..15) = 11, 14, 15, 12, 5, 8, 7, 9, 11, 13, 14, 15, 6, 7, 9, 8
* s(16..31) = 7, 6, 8, 13, 11, 9, 7, 15, 7, 12, 15, 9, 11, 7, 13, 12
* s(32..47) = 11, 13, 6, 7, 14, 9, 13, 15, 14, 8, 13, 6, 5, 12, 7, 5
* s(48..63) = 11, 12, 14, 15, 14, 15, 9, 8, 9, 14, 5, 6, 8, 6, 5, 12
* s(64..79) = 9, 15, 5, 11, 6, 8, 13, 12, 5, 12, 13, 14, 11, 8, 5, 6
* s'(0..15) = 8, 9, 9, 11, 13, 15, 15, 5, 7, 7, 8, 11, 14, 14, 12, 6
* s'(16..31)= 9, 13, 15, 7, 12, 8, 9, 11, 7, 7, 12, 7, 6, 15, 13, 11
* s'(32..47)= 9, 7, 15, 11, 8, 6, 6, 14, 12, 13, 5, 14, 13, 13, 7, 5
* s'(48..63)= 15, 5, 8, 11, 14, 14, 6, 14, 6, 9, 12, 9, 12, 5, 15, 8
* s'(64..79)= 8, 5, 12, 9, 12, 5, 14, 6, 8, 13, 6, 5, 15, 13, 11, 11
*
*
* initial value (hexadecimal)
*
* h0 = 0x67452301; h1 = 0xEFCDAB89; h2 = 0x98BADCFE; h3 = 0x10325476;
* h4 = 0xC3D2E1F0;
*
*
* RIPEMD-160: pseudo-code
*
* It is assumed that the message after padding consists of t 16-word blocks
* that will be denoted with X[i][j], with 0 <= i <= t-1 and 0 <= j <= 15.
* The symbol [+] denotes addition modulo 2**32 and rol_s denotes cyclic left
* shift (rotate) over s positions.
*
*
* for i := 0 to t-1 {
* A := h0; B := h1; C := h2; D = h3; E = h4;
* A' := h0; B' := h1; C' := h2; D' = h3; E' = h4;
* for j := 0 to 79 {
* T := rol_s(j)(A [+] f(j, B, C, D) [+] X[i][r(j)] [+] K(j)) [+] E;
* A := E; E := D; D := rol_10(C); C := B; B := T;
* T := rol_s'(j)(A' [+] f(79-j, B', C', D') [+] X[i][r'(j)]
[+] K'(j)) [+] E';
* A' := E'; E' := D'; D' := rol_10(C'); C' := B'; B' := T;
* }
* T := h1 [+] C [+] D'; h1 := h2 [+] D [+] E'; h2 := h3 [+] E [+] A';
* h3 := h4 [+] A [+] B'; h4 := h0 [+] B [+] C'; h0 := T;
* }
*/
/* Some examples:
* "" 9c1185a5c5e9fc54612808977ee8f548b2258d31
* "a" 0bdc9d2d256b3ee9daae347be6f4dc835a467ffe
* "abc" 8eb208f7e05d987a9b044a8e98c6b087f15a0bfc
* "message digest" 5d0689ef49d2fae572b881b123a85ffa21595f36
* "a...z" f71c27109c692c1b56bbdceb5b9d2865b3708dbc
* "abcdbcde...nopq" 12a053384a9c0c88e405a06c27dcf49ada62eb2b
* "A...Za...z0...9" b0e20b6e3116640286ed3a87a5713079b21f5189
* 8 times "1234567890" 9b752e45573d4b39f4dbd3323cab82bf63326bfb
* 1 million times "a" 52783243c1697bdbe16d37f97f68f08325dc1528
*/
typedef struct
{
gcry_md_block_ctx_t bctx;
u32 h0,h1,h2,h3,h4;
} RMD160_CONTEXT;
static unsigned int
transform ( void *ctx, const unsigned char *data, size_t nblks );
static void
rmd160_init (void *context, unsigned int flags)
{
RMD160_CONTEXT *hd = context;
(void)flags;
hd->h0 = 0x67452301;
hd->h1 = 0xEFCDAB89;
hd->h2 = 0x98BADCFE;
hd->h3 = 0x10325476;
hd->h4 = 0xC3D2E1F0;
hd->bctx.nblocks = 0;
hd->bctx.nblocks_high = 0;
hd->bctx.count = 0;
hd->bctx.blocksize_shift = _gcry_ctz(64);
hd->bctx.bwrite = transform;
}
/****************
* Transform the message X which consists of 16 32-bit-words
*/
static unsigned int
transform_blk ( void *ctx, const unsigned char *data )
{
RMD160_CONTEXT *hd = ctx;
register u32 al, ar, bl, br, cl, cr, dl, dr, el, er;
u32 x[16];
int i;
for ( i = 0; i < 16; i++ )
x[i] = buf_get_le32(data + i * 4);
#define K0 0x00000000
#define K1 0x5A827999
#define K2 0x6ED9EBA1
#define K3 0x8F1BBCDC
#define K4 0xA953FD4E
#define KK0 0x50A28BE6
#define KK1 0x5C4DD124
#define KK2 0x6D703EF3
#define KK3 0x7A6D76E9
#define KK4 0x00000000
#define F0(x,y,z) ( (x) ^ (y) ^ (z) )
#define F1(x,y,z) ( ((x) & (y)) | (~(x) & (z)) )
#define F2(x,y,z) ( ((x) | ~(y)) ^ (z) )
#define F3(x,y,z) ( ((x) & (z)) | ((y) & ~(z)) )
#define F4(x,y,z) ( (x) ^ ((y) | ~(z)) )
#define R(a,b,c,d,e,f,k,r,s) do { a += f(b,c,d) + k + x[r]; \
a = rol(a,s) + e; \
c = rol(c,10); \
} while(0)
/* left lane and right lanes interleaved */
al = ar = hd->h0;
bl = br = hd->h1;
cl = cr = hd->h2;
dl = dr = hd->h3;
el = er = hd->h4;
R( al, bl, cl, dl, el, F0, K0, 0, 11 );
R( ar, br, cr, dr, er, F4, KK0, 5, 8);
R( el, al, bl, cl, dl, F0, K0, 1, 14 );
R( er, ar, br, cr, dr, F4, KK0, 14, 9);
R( dl, el, al, bl, cl, F0, K0, 2, 15 );
R( dr, er, ar, br, cr, F4, KK0, 7, 9);
R( cl, dl, el, al, bl, F0, K0, 3, 12 );
R( cr, dr, er, ar, br, F4, KK0, 0, 11);
R( bl, cl, dl, el, al, F0, K0, 4, 5 );
R( br, cr, dr, er, ar, F4, KK0, 9, 13);
R( al, bl, cl, dl, el, F0, K0, 5, 8 );
R( ar, br, cr, dr, er, F4, KK0, 2, 15);
R( el, al, bl, cl, dl, F0, K0, 6, 7 );
R( er, ar, br, cr, dr, F4, KK0, 11, 15);
R( dl, el, al, bl, cl, F0, K0, 7, 9 );
R( dr, er, ar, br, cr, F4, KK0, 4, 5);
R( cl, dl, el, al, bl, F0, K0, 8, 11 );
R( cr, dr, er, ar, br, F4, KK0, 13, 7);
R( bl, cl, dl, el, al, F0, K0, 9, 13 );
R( br, cr, dr, er, ar, F4, KK0, 6, 7);
R( al, bl, cl, dl, el, F0, K0, 10, 14 );
R( ar, br, cr, dr, er, F4, KK0, 15, 8);
R( el, al, bl, cl, dl, F0, K0, 11, 15 );
R( er, ar, br, cr, dr, F4, KK0, 8, 11);
R( dl, el, al, bl, cl, F0, K0, 12, 6 );
R( dr, er, ar, br, cr, F4, KK0, 1, 14);
R( cl, dl, el, al, bl, F0, K0, 13, 7 );
R( cr, dr, er, ar, br, F4, KK0, 10, 14);
R( bl, cl, dl, el, al, F0, K0, 14, 9 );
R( br, cr, dr, er, ar, F4, KK0, 3, 12);
R( al, bl, cl, dl, el, F0, K0, 15, 8 );
R( ar, br, cr, dr, er, F4, KK0, 12, 6);
R( el, al, bl, cl, dl, F1, K1, 7, 7 );
R( er, ar, br, cr, dr, F3, KK1, 6, 9);
R( dl, el, al, bl, cl, F1, K1, 4, 6 );
R( dr, er, ar, br, cr, F3, KK1, 11, 13);
R( cl, dl, el, al, bl, F1, K1, 13, 8 );
R( cr, dr, er, ar, br, F3, KK1, 3, 15);
R( bl, cl, dl, el, al, F1, K1, 1, 13 );
R( br, cr, dr, er, ar, F3, KK1, 7, 7);
R( al, bl, cl, dl, el, F1, K1, 10, 11 );
R( ar, br, cr, dr, er, F3, KK1, 0, 12);
R( el, al, bl, cl, dl, F1, K1, 6, 9 );
R( er, ar, br, cr, dr, F3, KK1, 13, 8);
R( dl, el, al, bl, cl, F1, K1, 15, 7 );
R( dr, er, ar, br, cr, F3, KK1, 5, 9);
R( cl, dl, el, al, bl, F1, K1, 3, 15 );
R( cr, dr, er, ar, br, F3, KK1, 10, 11);
R( bl, cl, dl, el, al, F1, K1, 12, 7 );
R( br, cr, dr, er, ar, F3, KK1, 14, 7);
R( al, bl, cl, dl, el, F1, K1, 0, 12 );
R( ar, br, cr, dr, er, F3, KK1, 15, 7);
R( el, al, bl, cl, dl, F1, K1, 9, 15 );
R( er, ar, br, cr, dr, F3, KK1, 8, 12);
R( dl, el, al, bl, cl, F1, K1, 5, 9 );
R( dr, er, ar, br, cr, F3, KK1, 12, 7);
R( cl, dl, el, al, bl, F1, K1, 2, 11 );
R( cr, dr, er, ar, br, F3, KK1, 4, 6);
R( bl, cl, dl, el, al, F1, K1, 14, 7 );
R( br, cr, dr, er, ar, F3, KK1, 9, 15);
R( al, bl, cl, dl, el, F1, K1, 11, 13 );
R( ar, br, cr, dr, er, F3, KK1, 1, 13);
R( el, al, bl, cl, dl, F1, K1, 8, 12 );
R( er, ar, br, cr, dr, F3, KK1, 2, 11);
R( dl, el, al, bl, cl, F2, K2, 3, 11 );
R( dr, er, ar, br, cr, F2, KK2, 15, 9);
R( cl, dl, el, al, bl, F2, K2, 10, 13 );
R( cr, dr, er, ar, br, F2, KK2, 5, 7);
R( bl, cl, dl, el, al, F2, K2, 14, 6 );
R( br, cr, dr, er, ar, F2, KK2, 1, 15);
R( al, bl, cl, dl, el, F2, K2, 4, 7 );
R( ar, br, cr, dr, er, F2, KK2, 3, 11);
R( el, al, bl, cl, dl, F2, K2, 9, 14 );
R( er, ar, br, cr, dr, F2, KK2, 7, 8);
R( dl, el, al, bl, cl, F2, K2, 15, 9 );
R( dr, er, ar, br, cr, F2, KK2, 14, 6);
R( cl, dl, el, al, bl, F2, K2, 8, 13 );
R( cr, dr, er, ar, br, F2, KK2, 6, 6);
R( bl, cl, dl, el, al, F2, K2, 1, 15 );
R( br, cr, dr, er, ar, F2, KK2, 9, 14);
R( al, bl, cl, dl, el, F2, K2, 2, 14 );
R( ar, br, cr, dr, er, F2, KK2, 11, 12);
R( el, al, bl, cl, dl, F2, K2, 7, 8 );
R( er, ar, br, cr, dr, F2, KK2, 8, 13);
R( dl, el, al, bl, cl, F2, K2, 0, 13 );
R( dr, er, ar, br, cr, F2, KK2, 12, 5);
R( cl, dl, el, al, bl, F2, K2, 6, 6 );
R( cr, dr, er, ar, br, F2, KK2, 2, 14);
R( bl, cl, dl, el, al, F2, K2, 13, 5 );
R( br, cr, dr, er, ar, F2, KK2, 10, 13);
R( al, bl, cl, dl, el, F2, K2, 11, 12 );
R( ar, br, cr, dr, er, F2, KK2, 0, 13);
R( el, al, bl, cl, dl, F2, K2, 5, 7 );
R( er, ar, br, cr, dr, F2, KK2, 4, 7);
R( dl, el, al, bl, cl, F2, K2, 12, 5 );
R( dr, er, ar, br, cr, F2, KK2, 13, 5);
R( cl, dl, el, al, bl, F3, K3, 1, 11 );
R( cr, dr, er, ar, br, F1, KK3, 8, 15);
R( bl, cl, dl, el, al, F3, K3, 9, 12 );
R( br, cr, dr, er, ar, F1, KK3, 6, 5);
R( al, bl, cl, dl, el, F3, K3, 11, 14 );
R( ar, br, cr, dr, er, F1, KK3, 4, 8);
R( el, al, bl, cl, dl, F3, K3, 10, 15 );
R( er, ar, br, cr, dr, F1, KK3, 1, 11);
R( dl, el, al, bl, cl, F3, K3, 0, 14 );
R( dr, er, ar, br, cr, F1, KK3, 3, 14);
R( cl, dl, el, al, bl, F3, K3, 8, 15 );
R( cr, dr, er, ar, br, F1, KK3, 11, 14);
R( bl, cl, dl, el, al, F3, K3, 12, 9 );
R( br, cr, dr, er, ar, F1, KK3, 15, 6);
R( al, bl, cl, dl, el, F3, K3, 4, 8 );
R( ar, br, cr, dr, er, F1, KK3, 0, 14);
R( el, al, bl, cl, dl, F3, K3, 13, 9 );
R( er, ar, br, cr, dr, F1, KK3, 5, 6);
R( dl, el, al, bl, cl, F3, K3, 3, 14 );
R( dr, er, ar, br, cr, F1, KK3, 12, 9);
R( cl, dl, el, al, bl, F3, K3, 7, 5 );
R( cr, dr, er, ar, br, F1, KK3, 2, 12);
R( bl, cl, dl, el, al, F3, K3, 15, 6 );
R( br, cr, dr, er, ar, F1, KK3, 13, 9);
R( al, bl, cl, dl, el, F3, K3, 14, 8 );
R( ar, br, cr, dr, er, F1, KK3, 9, 12);
R( el, al, bl, cl, dl, F3, K3, 5, 6 );
R( er, ar, br, cr, dr, F1, KK3, 7, 5);
R( dl, el, al, bl, cl, F3, K3, 6, 5 );
R( dr, er, ar, br, cr, F1, KK3, 10, 15);
R( cl, dl, el, al, bl, F3, K3, 2, 12 );
R( cr, dr, er, ar, br, F1, KK3, 14, 8);
R( bl, cl, dl, el, al, F4, K4, 4, 9 );
R( br, cr, dr, er, ar, F0, KK4, 12, 8);
R( al, bl, cl, dl, el, F4, K4, 0, 15 );
R( ar, br, cr, dr, er, F0, KK4, 15, 5);
R( el, al, bl, cl, dl, F4, K4, 5, 5 );
R( er, ar, br, cr, dr, F0, KK4, 10, 12);
R( dl, el, al, bl, cl, F4, K4, 9, 11 );
R( dr, er, ar, br, cr, F0, KK4, 4, 9);
R( cl, dl, el, al, bl, F4, K4, 7, 6 );
R( cr, dr, er, ar, br, F0, KK4, 1, 12);
R( bl, cl, dl, el, al, F4, K4, 12, 8 );
R( br, cr, dr, er, ar, F0, KK4, 5, 5);
R( al, bl, cl, dl, el, F4, K4, 2, 13 );
R( ar, br, cr, dr, er, F0, KK4, 8, 14);
R( el, al, bl, cl, dl, F4, K4, 10, 12 );
R( er, ar, br, cr, dr, F0, KK4, 7, 6);
R( dl, el, al, bl, cl, F4, K4, 14, 5 );
R( dr, er, ar, br, cr, F0, KK4, 6, 8);
R( cl, dl, el, al, bl, F4, K4, 1, 12 );
R( cr, dr, er, ar, br, F0, KK4, 2, 13);
R( bl, cl, dl, el, al, F4, K4, 3, 13 );
R( br, cr, dr, er, ar, F0, KK4, 13, 6);
R( al, bl, cl, dl, el, F4, K4, 8, 14 );
R( ar, br, cr, dr, er, F0, KK4, 14, 5);
R( el, al, bl, cl, dl, F4, K4, 11, 11 );
R( er, ar, br, cr, dr, F0, KK4, 0, 15);
R( dl, el, al, bl, cl, F4, K4, 6, 8 );
R( dr, er, ar, br, cr, F0, KK4, 3, 13);
R( cl, dl, el, al, bl, F4, K4, 15, 5 );
R( cr, dr, er, ar, br, F0, KK4, 9, 11);
R( bl, cl, dl, el, al, F4, K4, 13, 6 );
R( br, cr, dr, er, ar, F0, KK4, 11, 11);
dr += cl + hd->h1;
hd->h1 = hd->h2 + dl + er;
hd->h2 = hd->h3 + el + ar;
hd->h3 = hd->h4 + al + br;
hd->h4 = hd->h0 + bl + cr;
hd->h0 = dr;
return /*burn_stack*/ 104+5*sizeof(void*);
}
static unsigned int
transform ( void *c, const unsigned char *data, size_t nblks )
{
unsigned int burn;
do
{
burn = transform_blk (c, data);
data += 64;
}
while (--nblks);
return burn;
}
/*
* The routine terminates the computation
*/
static void
rmd160_final( void *context )
{
RMD160_CONTEXT *hd = context;
u32 t, th, msb, lsb;
byte *p;
unsigned int burn;
t = hd->bctx.nblocks;
if (sizeof t == sizeof hd->bctx.nblocks)
th = hd->bctx.nblocks_high;
else
th = hd->bctx.nblocks >> 32;
/* multiply by 64 to make a byte count */
lsb = t << 6;
msb = (th << 6) | (t >> 26);
/* add the count */
t = lsb;
if( (lsb += hd->bctx.count) < t )
msb++;
/* multiply by 8 to make a bit count */
t = lsb;
lsb <<= 3;
msb <<= 3;
msb |= t >> 29;
if (hd->bctx.count < 56) /* enough room */
{
hd->bctx.buf[hd->bctx.count++] = 0x80; /* pad */
if (hd->bctx.count < 56)
memset (&hd->bctx.buf[hd->bctx.count], 0, 56 - hd->bctx.count);
/* append the 64 bit count */
buf_put_le32(hd->bctx.buf + 56, lsb);
buf_put_le32(hd->bctx.buf + 60, msb);
burn = transform (hd, hd->bctx.buf, 1);
}
else /* need one extra block */
{
hd->bctx.buf[hd->bctx.count++] = 0x80; /* pad character */
/* fill pad and next block with zeroes */
memset (&hd->bctx.buf[hd->bctx.count], 0, 64 - hd->bctx.count + 56);
/* append the 64 bit count */
buf_put_le32(hd->bctx.buf + 64 + 56, lsb);
buf_put_le32(hd->bctx.buf + 64 + 60, msb);
burn = transform (hd, hd->bctx.buf, 2);
}
p = hd->bctx.buf;
#define X(a) do { buf_put_le32(p, hd->h##a); p += 4; } while(0)
X(0);
X(1);
X(2);
X(3);
X(4);
#undef X
hd->bctx.count = 0;
_gcry_burn_stack (burn);
}
static byte *
rmd160_read( void *context )
{
RMD160_CONTEXT *hd = context;
return hd->bctx.buf;
}
/****************
* Shortcut functions which puts the hash value of the supplied buffer
* into outbuf which must have a size of 20 bytes.
*/
void
_gcry_rmd160_hash_buffer (void *outbuf, const void *buffer, size_t length )
{
RMD160_CONTEXT hd;
rmd160_init (&hd, 0);
_gcry_md_block_write ( &hd, buffer, length );
rmd160_final ( &hd );
memcpy ( outbuf, hd.bctx.buf, 20 );
}
/* Variant of the above shortcut function using a multiple buffers. */
static void
_gcry_rmd160_hash_buffers (void *outbuf, const gcry_buffer_t *iov, int iovcnt)
{
RMD160_CONTEXT hd;
rmd160_init (&hd, 0);
for (;iovcnt > 0; iov++, iovcnt--)
_gcry_md_block_write (&hd,
(const char*)iov[0].data + iov[0].off, iov[0].len);
rmd160_final ( &hd );
memcpy ( outbuf, hd.bctx.buf, 20 );
}
static byte asn[15] = /* Object ID is 1.3.36.3.2.1 */
{ 0x30, 0x21, 0x30, 0x09, 0x06, 0x05, 0x2b, 0x24, 0x03,
0x02, 0x01, 0x05, 0x00, 0x04, 0x14 };
static gcry_md_oid_spec_t oid_spec_rmd160[] =
{
/* rsaSignatureWithripemd160 */
{ "1.3.36.3.3.1.2" },
/* TeleTrust hash algorithm. */
{ "1.3.36.3.2.1" },
{ NULL }
};
gcry_md_spec_t _gcry_digest_spec_rmd160 =
{
GCRY_MD_RMD160, {0, 0},
"RIPEMD160", asn, DIM (asn), oid_spec_rmd160, 20,
rmd160_init, _gcry_md_block_write, rmd160_final, rmd160_read, NULL,
_gcry_rmd160_hash_buffer, _gcry_rmd160_hash_buffers,
sizeof (RMD160_CONTEXT)
};