/* crypto/md4/md4_dgst.c */

/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)

 * All rights reserved.

 *

 * This package is an SSL implementation written

 * by Eric Young (eay@cryptsoft.com).

 * The implementation was written so as to conform with Netscapes SSL.

 *

 * This library is free for commercial and non-commercial use as long as

 * the following conditions are aheared to.  The following conditions

 * apply to all code found in this distribution, be it the RC4, RSA,

 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation

 * included with this distribution is covered by the same copyright terms

 * except that the holder is Tim Hudson (tjh@cryptsoft.com).

 *

 * Copyright remains Eric Young's, and as such any Copyright notices in

 * the code are not to be removed.

 * If this package is used in a product, Eric Young should be given attribution

 * as the author of the parts of the library used.

 * This can be in the form of a textual message at program startup or

 * in documentation (online or textual) provided with the package.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 * 3. All advertising materials mentioning features or use of this software

 *    must display the following acknowledgement:

 *    "This product includes cryptographic software written by

 *     Eric Young (eay@cryptsoft.com)"

 *    The word 'cryptographic' can be left out if the rouines from the library

 *    being used are not cryptographic related :-).

 * 4. If you include any Windows specific code (or a derivative thereof) from

 *    the apps directory (application code) you must include an acknowledgement:

 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"

 *

 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND

 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE

 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

 * SUCH DAMAGE.

 *

 * The licence and distribution terms for any publically available version or

 * derivative of this code cannot be changed.  i.e. this code cannot simply be

 * copied and put under another distribution licence

 * [including the GNU Public Licence.]

 */

#include <stdio.h>

#include <openssl/opensslv.h>

#include <openssl/crypto.h>

#include "md4_locl.h"

const char MD4_version[] = "MD4" OPENSSL_VERSION_PTEXT;

/*

 * Implemented from RFC1186 The MD4 Message-Digest Algorithm

 */

#define INIT_DATA_A (unsigned long)0x67452301L

#define INIT_DATA_B (unsigned long)0xefcdab89L

#define INIT_DATA_C (unsigned long)0x98badcfeL

#define INIT_DATA_D (unsigned long)0x10325476L

fips_md_init(MD4)

{

    memset(c, 0, sizeof(*c));

    c->A = INIT_DATA_A;

    c->B = INIT_DATA_B;

    c->C = INIT_DATA_C;

    c->D = INIT_DATA_D;

    return 1;

}

#ifndef md4_block_data_order

# ifdef X

#  undef X

# endif

void md4_block_data_order(MD4_CTX *c, const void *data_, size_t num)

{

    const unsigned char *data = data_;

    register unsigned MD32_REG_T A, B, C, D, l;

# ifndef MD32_XARRAY

    /* See comment in crypto/sha/sha_locl.h for details. */

    unsigned MD32_REG_T XX0, XX1, XX2, XX3, XX4, XX5, XX6, XX7,

        XX8, XX9, XX10, XX11, XX12, XX13, XX14, XX15;

#  define X(i)   XX##i

# else

    MD4_LONG XX[MD4_LBLOCK];

#  define X(i)   XX[i]

# endif

    A = c->A;

    B = c->B;

    C = c->C;

    D = c->D;

    for (; num--;) {

        (void)HOST_c2l(data, l);

        X(0) = l;

        (void)HOST_c2l(data, l);

        X(1) = l;

        /* Round 0 */

        R0(A, B, C, D, X(0), 3, 0);

        (void)HOST_c2l(data, l);

        X(2) = l;

        R0(D, A, B, C, X(1), 7, 0);

        (void)HOST_c2l(data, l);

        X(3) = l;

        R0(C, D, A, B, X(2), 11, 0);

        (void)HOST_c2l(data, l);

        X(4) = l;

        R0(B, C, D, A, X(3), 19, 0);

        (void)HOST_c2l(data, l);

        X(5) = l;

        R0(A, B, C, D, X(4), 3, 0);

        (void)HOST_c2l(data, l);

        X(6) = l;

        R0(D, A, B, C, X(5), 7, 0);

        (void)HOST_c2l(data, l);

        X(7) = l;

        R0(C, D, A, B, X(6), 11, 0);

        (void)HOST_c2l(data, l);

        X(8) = l;

        R0(B, C, D, A, X(7), 19, 0);

        (void)HOST_c2l(data, l);

        X(9) = l;

        R0(A, B, C, D, X(8), 3, 0);

        (void)HOST_c2l(data, l);

        X(10) = l;

        R0(D, A, B, C, X(9), 7, 0);

        (void)HOST_c2l(data, l);

        X(11) = l;

        R0(C, D, A, B, X(10), 11, 0);

        (void)HOST_c2l(data, l);

        X(12) = l;

        R0(B, C, D, A, X(11), 19, 0);

        (void)HOST_c2l(data, l);

        X(13) = l;

        R0(A, B, C, D, X(12), 3, 0);

        (void)HOST_c2l(data, l);

        X(14) = l;

        R0(D, A, B, C, X(13), 7, 0);

        (void)HOST_c2l(data, l);

        X(15) = l;

        R0(C, D, A, B, X(14), 11, 0);

        R0(B, C, D, A, X(15), 19, 0);

        /* Round 1 */

        R1(A, B, C, D, X(0), 3, 0x5A827999L);

        R1(D, A, B, C, X(4), 5, 0x5A827999L);

        R1(C, D, A, B, X(8), 9, 0x5A827999L);

        R1(B, C, D, A, X(12), 13, 0x5A827999L);

        R1(A, B, C, D, X(1), 3, 0x5A827999L);

        R1(D, A, B, C, X(5), 5, 0x5A827999L);

        R1(C, D, A, B, X(9), 9, 0x5A827999L);

        R1(B, C, D, A, X(13), 13, 0x5A827999L);

        R1(A, B, C, D, X(2), 3, 0x5A827999L);

        R1(D, A, B, C, X(6), 5, 0x5A827999L);

        R1(C, D, A, B, X(10), 9, 0x5A827999L);

        R1(B, C, D, A, X(14), 13, 0x5A827999L);

        R1(A, B, C, D, X(3), 3, 0x5A827999L);

        R1(D, A, B, C, X(7), 5, 0x5A827999L);

        R1(C, D, A, B, X(11), 9, 0x5A827999L);

        R1(B, C, D, A, X(15), 13, 0x5A827999L);

        /* Round 2 */

        R2(A, B, C, D, X(0), 3, 0x6ED9EBA1L);

        R2(D, A, B, C, X(8), 9, 0x6ED9EBA1L);

        R2(C, D, A, B, X(4), 11, 0x6ED9EBA1L);

        R2(B, C, D, A, X(12), 15, 0x6ED9EBA1L);

        R2(A, B, C, D, X(2), 3, 0x6ED9EBA1L);

        R2(D, A, B, C, X(10), 9, 0x6ED9EBA1L);

        R2(C, D, A, B, X(6), 11, 0x6ED9EBA1L);

        R2(B, C, D, A, X(14), 15, 0x6ED9EBA1L);

        R2(A, B, C, D, X(1), 3, 0x6ED9EBA1L);

        R2(D, A, B, C, X(9), 9, 0x6ED9EBA1L);

        R2(C, D, A, B, X(5), 11, 0x6ED9EBA1L);

        R2(B, C, D, A, X(13), 15, 0x6ED9EBA1L);

        R2(A, B, C, D, X(3), 3, 0x6ED9EBA1L);

        R2(D, A, B, C, X(11), 9, 0x6ED9EBA1L);

        R2(C, D, A, B, X(7), 11, 0x6ED9EBA1L);

        R2(B, C, D, A, X(15), 15, 0x6ED9EBA1L);

        A = c->A += A;

        B = c->B += B;

        C = c->C += C;

        D = c->D += D;

    }

}

#endif