support of MD4 hash
This commit is contained in:
Andreas Steffen
parent
eca666d600
commit
1e0d1ae213
13
configure.in
13
configure.in
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@ -184,6 +184,14 @@ AC_ARG_ENABLE(
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des=true
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)
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AC_ARG_ENABLE(
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[md4],
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AS_HELP_STRING([--enable-md4],[enable MD4 software implementation plugin (default is NO).]),
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[if test x$enableval = xyes; then
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md4=true
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fi]
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)
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AC_ARG_ENABLE(
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[md5],
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AS_HELP_STRING([--disable-md5],[disable own MD5 software implementation plugin. (default is NO).]),
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@ -856,6 +864,9 @@ fi
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if test x$sha2 = xtrue; then
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libstrongswan_plugins=${libstrongswan_plugins}" sha2"
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fi
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if test x$md4 = xtrue; then
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libstrongswan_plugins=${libstrongswan_plugins}" md4"
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fi
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if test x$md5 = xtrue; then
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libstrongswan_plugins=${libstrongswan_plugins}" md5"
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fi
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@ -908,6 +919,7 @@ AM_CONDITIONAL(USE_CURL, test x$curl = xtrue)
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AM_CONDITIONAL(USE_LDAP, test x$ldap = xtrue)
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AM_CONDITIONAL(USE_AES, test x$aes = xtrue)
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AM_CONDITIONAL(USE_DES, test x$des = xtrue)
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AM_CONDITIONAL(USE_MD4, test x$md4 = xtrue)
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AM_CONDITIONAL(USE_MD5, test x$md5 = xtrue)
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AM_CONDITIONAL(USE_SHA1, test x$sha1 = xtrue)
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AM_CONDITIONAL(USE_SHA2, test x$sha2 = xtrue)
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@ -992,6 +1004,7 @@ AC_OUTPUT(
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src/libstrongswan/Makefile
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src/libstrongswan/plugins/aes/Makefile
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src/libstrongswan/plugins/des/Makefile
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src/libstrongswan/plugins/md4/Makefile
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src/libstrongswan/plugins/md5/Makefile
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src/libstrongswan/plugins/sha1/Makefile
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src/libstrongswan/plugins/sha2/Makefile
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@ -98,6 +98,10 @@ if USE_DES
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SUBDIRS += plugins/des
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endif
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if USE_MD4
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SUBDIRS += plugins/md4
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endif
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if USE_MD5
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SUBDIRS += plugins/md5
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endif
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@ -0,0 +1,10 @@
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INCLUDES = -I$(top_srcdir)/src/libstrongswan
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AM_CFLAGS = -rdynamic
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plugin_LTLIBRARIES = libstrongswan-md4.la
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libstrongswan_md4_la_SOURCES = md4_plugin.h md4_plugin.c md4_hasher.c md4_hasher.h
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libstrongswan_md4_la_LDFLAGS = -module
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@ -0,0 +1,359 @@
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/*
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* Copyright (C) 2005-2006 Martin Willi
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* Copyright (C) 2005 Jan Hutter
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* Hochschule fuer Technik Rapperswil
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* Copyright (C) 1990-1992, RSA Data Security, Inc. Created 1990.
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* All rights reserved.
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*
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* Derived from the RSA Data Security, Inc. MD4 Message-Digest Algorithm.
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* Ported to fulfill hasher_t interface.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* $Id: md4_hasher.c 3488 2008-02-21 15:10:02Z martin $
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*/
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#include <string.h>
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#include "md4_hasher.h"
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/*
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* Constants for MD4Transform routine.
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*/
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#define S11 3
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#define S12 7
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#define S13 11
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#define S14 19
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#define S21 3
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#define S22 5
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#define S23 9
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#define S24 13
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#define S31 3
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#define S32 9
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#define S33 11
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#define S34 15
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static u_int8_t PADDING[64] = {
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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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/*
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* F, G, H and I are basic MD4 functions.
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*/
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#define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
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#define G(x, y, z) (((x) & (y)) | ((x) & (z)) | ((y) & (z)))
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#define H(x, y, z) ((x) ^ (y) ^ (z))
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/*
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* ROTATE_LEFT rotates x left n bits.
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*/
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#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))
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/* FF, GG and HH are transformations for rounds 1, 2 and 3
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* Rotation is separate from addition to prevent recomputation
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*/
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#define FF(a, b, c, d, x, s) { \
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(a) += F ((b), (c), (d)) + (x); \
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(a) = ROTATE_LEFT ((a), (s)); \
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}
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#define GG(a, b, c, d, x, s) { \
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(a) += G ((b), (c), (d)) + (x) + (u_int32_t)0x5a827999; \
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(a) = ROTATE_LEFT ((a), (s)); \
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}
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#define HH(a, b, c, d, x, s) { \
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(a) += H ((b), (c), (d)) + (x) + (u_int32_t)0x6ed9eba1; \
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(a) = ROTATE_LEFT ((a), (s)); \
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}
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typedef struct private_md4_hasher_t private_md4_hasher_t;
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/**
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* Private data structure with hasing context.
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*/
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struct private_md4_hasher_t {
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/**
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* Public interface for this hasher.
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*/
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md4_hasher_t public;
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/*
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* State of the hasher.
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*/
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u_int32_t state[4];
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u_int32_t count[2];
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u_int8_t buffer[64];
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};
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#if BYTE_ORDER != LITTLE_ENDIAN
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/* Encodes input (u_int32_t) into output (u_int8_t). Assumes len is
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* a multiple of 4.
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*/
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static void Encode (u_int8_t *output, u_int32_t *input, size_t len)
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{
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size_t i, j;
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for (i = 0, j = 0; j < len; i++, j += 4)
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{
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output[j] = (u_int8_t)(input[i] & 0xff);
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output[j+1] = (u_int8_t)((input[i] >> 8) & 0xff);
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output[j+2] = (u_int8_t)((input[i] >> 16) & 0xff);
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output[j+3] = (u_int8_t)((input[i] >> 24) & 0xff);
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}
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}
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/* Decodes input (u_int8_t) into output (u_int32_t). Assumes len is
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* a multiple of 4.
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*/
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static void Decode(u_int32_t *output, u_int8_t *input, size_t len)
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{
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size_t i, j;
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for (i = 0, j = 0; j < len; i++, j += 4)
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{
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output[i] = ((u_int32_t)input[j]) | (((u_int32_t)input[j+1]) << 8) |
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(((u_int32_t)input[j+2]) << 16) | (((u_int32_t)input[j+3]) << 24);
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}
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}
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#elif BYTE_ORDER == LITTLE_ENDIAN
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#define Encode memcpy
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#define Decode memcpy
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#endif
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/*
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* MD4 basic transformation. Transforms state based on block.
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*/
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static void MD4Transform(u_int32_t state[4], u_int8_t block[64])
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{
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u_int32_t a = state[0], b = state[1], c = state[2], d = state[3], x[16];
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Decode(x, block, 64);
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/* Round 1 */
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FF (a, b, c, d, x[ 0], S11); /* 1 */
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FF (d, a, b, c, x[ 1], S12); /* 2 */
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FF (c, d, a, b, x[ 2], S13); /* 3 */
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FF (b, c, d, a, x[ 3], S14); /* 4 */
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FF (a, b, c, d, x[ 4], S11); /* 5 */
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FF (d, a, b, c, x[ 5], S12); /* 6 */
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FF (c, d, a, b, x[ 6], S13); /* 7 */
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FF (b, c, d, a, x[ 7], S14); /* 8 */
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FF (a, b, c, d, x[ 8], S11); /* 9 */
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FF (d, a, b, c, x[ 9], S12); /* 10 */
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FF (c, d, a, b, x[10], S13); /* 11 */
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FF (b, c, d, a, x[11], S14); /* 12 */
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FF (a, b, c, d, x[12], S11); /* 13 */
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FF (d, a, b, c, x[13], S12); /* 14 */
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FF (c, d, a, b, x[14], S13); /* 15 */
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FF (b, c, d, a, x[15], S14); /* 16 */
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/* Round 2 */
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GG (a, b, c, d, x[ 0], S21); /* 17 */
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GG (d, a, b, c, x[ 4], S22); /* 18 */
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GG (c, d, a, b, x[ 8], S23); /* 19 */
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GG (b, c, d, a, x[12], S24); /* 20 */
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GG (a, b, c, d, x[ 1], S21); /* 21 */
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GG (d, a, b, c, x[ 5], S22); /* 22 */
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GG (c, d, a, b, x[ 9], S23); /* 23 */
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GG (b, c, d, a, x[13], S24); /* 24 */
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GG (a, b, c, d, x[ 2], S21); /* 25 */
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GG (d, a, b, c, x[ 6], S22); /* 26 */
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GG (c, d, a, b, x[10], S23); /* 27 */
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GG (b, c, d, a, x[14], S24); /* 28 */
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GG (a, b, c, d, x[ 3], S21); /* 29 */
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GG (d, a, b, c, x[ 7], S22); /* 30 */
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GG (c, d, a, b, x[11], S23); /* 31 */
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GG (b, c, d, a, x[15], S24); /* 32 */
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/* Round 3 */
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HH (a, b, c, d, x[ 0], S31); /* 33 */
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HH (d, a, b, c, x[ 8], S32); /* 34 */
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HH (c, d, a, b, x[ 4], S33); /* 35 */
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HH (b, c, d, a, x[12], S34); /* 36 */
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HH (a, b, c, d, x[ 2], S31); /* 37 */
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HH (d, a, b, c, x[10], S32); /* 38 */
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HH (c, d, a, b, x[ 6], S33); /* 39 */
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HH (b, c, d, a, x[14], S34); /* 40 */
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HH (a, b, c, d, x[ 1], S31); /* 41 */
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HH (d, a, b, c, x[ 9], S32); /* 42 */
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HH (c, d, a, b, x[ 5], S33); /* 43 */
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HH (b, c, d, a, x[13], S34); /* 44 */
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HH (a, b, c, d, x[ 3], S31); /* 45 */
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HH (d, a, b, c, x[11], S32); /* 46 */
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HH (c, d, a, b, x[ 7], S33); /* 47 */
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HH (b, c, d, a, x[15], S34); /* 48 */
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state[0] += a;
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state[1] += b;
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state[2] += c;
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state[3] += d;
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}
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/* MD4 block update operation. Continues an MD4 message-digest
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* operation, processing another message block, and updating the
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* context.
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*/
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static void MD4Update(private_md4_hasher_t *this, u_int8_t *input, size_t inputLen)
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{
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u_int32_t i;
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size_t index, partLen;
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/* Compute number of bytes mod 64 */
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index = (u_int8_t)((this->count[0] >> 3) & 0x3F);
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/* Update number of bits */
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if ((this->count[0] += (inputLen << 3)) < (inputLen << 3))
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{
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this->count[1]++;
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}
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this->count[1] += (inputLen >> 29);
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partLen = 64 - index;
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/* Transform as many times as possible. */
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if (inputLen >= partLen)
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{
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memcpy(&this->buffer[index], input, partLen);
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MD4Transform (this->state, this->buffer);
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for (i = partLen; i + 63 < inputLen; i += 64)
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{
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MD4Transform (this->state, &input[i]);
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}
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index = 0;
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}
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else
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{
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i = 0;
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}
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/* Buffer remaining input */
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memcpy(&this->buffer[index], &input[i], inputLen-i);
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}
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/* MD4 finalization. Ends an MD4 message-digest operation, writing the
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* the message digest and zeroizing the context.
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*/
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static void MD4Final (private_md4_hasher_t *this, u_int8_t digest[16])
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{
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u_int8_t bits[8];
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size_t index, padLen;
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/* Save number of bits */
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Encode (bits, this->count, 8);
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/* Pad out to 56 mod 64. */
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index = (size_t)((this->count[0] >> 3) & 0x3f);
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padLen = (index < 56) ? (56 - index) : (120 - index);
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MD4Update (this, PADDING, padLen);
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/* Append length (before padding) */
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MD4Update (this, bits, 8);
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if (digest != NULL) /* Bill Simpson's padding */
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{
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/* store state in digest */
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Encode (digest, this->state, 16);
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}
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}
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/**
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* Implementation of hasher_t.get_hash.
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*/
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static void get_hash(private_md4_hasher_t *this, chunk_t chunk, u_int8_t *buffer)
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{
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MD4Update(this, chunk.ptr, chunk.len);
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if (buffer != NULL)
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{
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MD4Final(this, buffer);
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this->public.hasher_interface.reset(&(this->public.hasher_interface));
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}
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}
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/**
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* Implementation of hasher_t.allocate_hash.
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*/
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static void allocate_hash(private_md4_hasher_t *this, chunk_t chunk, chunk_t *hash)
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{
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chunk_t allocated_hash;
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MD4Update(this, chunk.ptr, chunk.len);
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if (hash != NULL)
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{
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allocated_hash.ptr = malloc(HASH_SIZE_MD4);
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allocated_hash.len = HASH_SIZE_MD4;
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MD4Final(this, allocated_hash.ptr);
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this->public.hasher_interface.reset(&(this->public.hasher_interface));
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*hash = allocated_hash;
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}
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}
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/**
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* Implementation of hasher_t.get_hash_size.
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*/
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static size_t get_hash_size(private_md4_hasher_t *this)
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{
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return HASH_SIZE_MD4;
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}
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/**
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* Implementation of hasher_t.reset.
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*/
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static void reset(private_md4_hasher_t *this)
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{
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this->state[0] = 0x67452301;
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this->state[1] = 0xefcdab89;
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this->state[2] = 0x98badcfe;
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this->state[3] = 0x10325476;
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this->count[0] = 0;
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this->count[1] = 0;
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}
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/**
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* Implementation of hasher_t.destroy.
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*/
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static void destroy(private_md4_hasher_t *this)
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{
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free(this);
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}
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/*
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* Described in header.
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*/
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md4_hasher_t *md4_hasher_create(hash_algorithm_t algo)
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{
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private_md4_hasher_t *this;
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if (algo != HASH_MD4)
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{
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return NULL;
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}
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this = malloc_thing(private_md4_hasher_t);
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this->public.hasher_interface.get_hash = (void (*) (hasher_t*, chunk_t, u_int8_t*))get_hash;
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this->public.hasher_interface.allocate_hash = (void (*) (hasher_t*, chunk_t, chunk_t*))allocate_hash;
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this->public.hasher_interface.get_hash_size = (size_t (*) (hasher_t*))get_hash_size;
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this->public.hasher_interface.reset = (void (*) (hasher_t*))reset;
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this->public.hasher_interface.destroy = (void (*) (hasher_t*))destroy;
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/* initialize */
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reset(this);
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return &(this->public);
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}
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@ -0,0 +1,48 @@
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/*
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* Copyright (C) 2008 Martin Willi
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* Copyright (C) 2005 Jan Hutter
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* Hochschule fuer Technik Rapperswil
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*
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* This program is free software; you can redistribute it and/or modify it
|
||||
* under the terms of the GNU General Public License as published by the
|
||||
* Free Software Foundation; either version 2 of the License, or (at your
|
||||
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
|
||||
*
|
||||
* This program 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 General Public License
|
||||
* for more details.
|
||||
*/
|
||||
|
||||
/**
|
||||
* @defgroup md4_hasher md4_hasher
|
||||
* @{ @ingroup md4_p
|
||||
*/
|
||||
|
||||
#ifndef MD4_HASHER_H_
|
||||
#define MD4_HASHER_H_
|
||||
|
||||
typedef struct md4_hasher_t md4_hasher_t;
|
||||
|
||||
#include <crypto/hashers/hasher.h>
|
||||
|
||||
/**
|
||||
* Implementation of hasher_t interface using the MD4 algorithm.
|
||||
*/
|
||||
struct md4_hasher_t {
|
||||
|
||||
/**
|
||||
* Generic hasher_t interface for this hasher.
|
||||
*/
|
||||
hasher_t hasher_interface;
|
||||
};
|
||||
|
||||
/**
|
||||
* Creates a new md4_hasher_t.
|
||||
*
|
||||
* @param algo hash algorithm, must be HASH_MD4
|
||||
* @return md4_hasher_t object, NULL if not supported
|
||||
*/
|
||||
md4_hasher_t *md4_hasher_create(hash_algorithm_t algo);
|
||||
|
||||
#endif /*MD4_HASHER_H_@}*/
|
||||
|
|
@ -0,0 +1,60 @@
|
|||
/*
|
||||
* Copyright (C) 2008 Martin Willi
|
||||
* Hochschule fuer Technik Rapperswil
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify it
|
||||
* under the terms of the GNU General Public License as published by the
|
||||
* Free Software Foundation; either version 2 of the License, or (at your
|
||||
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
|
||||
*
|
||||
* This program 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 General Public License
|
||||
* for more details.
|
||||
*
|
||||
* $Id: md4_plugin.c 3488 2008-02-21 15:10:02Z martin $
|
||||
*/
|
||||
|
||||
#include "md4_plugin.h"
|
||||
|
||||
#include <library.h>
|
||||
#include "md4_hasher.h"
|
||||
|
||||
typedef struct private_md4_plugin_t private_md4_plugin_t;
|
||||
|
||||
/**
|
||||
* private data of md4_plugin
|
||||
*/
|
||||
struct private_md4_plugin_t {
|
||||
|
||||
/**
|
||||
* public functions
|
||||
*/
|
||||
md4_plugin_t public;
|
||||
};
|
||||
|
||||
/**
|
||||
* Implementation of md4_plugin_t.destroy
|
||||
*/
|
||||
static void destroy(private_md4_plugin_t *this)
|
||||
{
|
||||
lib->crypto->remove_hasher(lib->crypto,
|
||||
(hasher_constructor_t)md4_hasher_create);
|
||||
free(this);
|
||||
}
|
||||
|
||||
/*
|
||||
* see header file
|
||||
*/
|
||||
plugin_t *plugin_create()
|
||||
{
|
||||
private_md4_plugin_t *this = malloc_thing(private_md4_plugin_t);
|
||||
|
||||
this->public.plugin.destroy = (void(*)(plugin_t*))destroy;
|
||||
|
||||
lib->crypto->add_hasher(lib->crypto, HASH_MD4,
|
||||
(hasher_constructor_t)md4_hasher_create);
|
||||
|
||||
return &this->public.plugin;
|
||||
}
|
||||
|
||||
|
|
@ -0,0 +1,47 @@
|
|||
/*
|
||||
* Copyright (C) 2008 Martin Willi
|
||||
* Hochschule fuer Technik Rapperswil
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify it
|
||||
* under the terms of the GNU General Public License as published by the
|
||||
* Free Software Foundation; either version 2 of the License, or (at your
|
||||
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
|
||||
*
|
||||
* This program 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 General Public License
|
||||
* for more details.
|
||||
*/
|
||||
|
||||
/**
|
||||
* @defgroup md4_p md4
|
||||
* @ingroup plugins
|
||||
*
|
||||
* @defgroup md4_plugin md4_plugin
|
||||
* @{ @ingroup md4_p
|
||||
*/
|
||||
|
||||
#ifndef MD4_PLUGIN_H_
|
||||
#define MD4_PLUGIN_H_
|
||||
|
||||
#include <plugins/plugin.h>
|
||||
|
||||
typedef struct md4_plugin_t md4_plugin_t;
|
||||
|
||||
/**
|
||||
* Plugin implementing the md4 hash algorithm in software.
|
||||
*/
|
||||
struct md4_plugin_t {
|
||||
|
||||
/**
|
||||
* implements plugin interface
|
||||
*/
|
||||
plugin_t plugin;
|
||||
};
|
||||
|
||||
/**
|
||||
* Create a md4_plugin instance.
|
||||
*/
|
||||
plugin_t *plugin_create();
|
||||
|
||||
#endif /* MD4_PLUGIN_H_ @}*/
|
||||
Loading…
Reference in New Issue