unused code

git-svn-id: http://opensvn.csie.org/pttbbs/trunk/pttbbs@1165 63ad8ddf-47c3-0310-b6dd-a9e9d9715204

1 files changed, 0 insertions, 621 deletions

diff --git a/mbbsd/descrypt.c b/mbbsd/descrypt.c
deleted file mode 100644
index 30d33b8b..00000000
--- a/mbbsd/descrypt.c
+++ /dev/null
@@ -1,621 +0,0 @@
-/* $Id: descrypt.c,v 1.4 2002/07/21 09:26:02 in2 Exp $ */
-
-/*
- * FreeSec: libcrypt for NetBSD
- * 
- * Copyright (c) 1994 David Burren All rights reserved.
- * 
- * Adapted for FreeBSD-2.0 by Geoffrey M. Rehmet crypt.c should now *only*
- * export crypt(), in order to make binaries of libcrypt exportable from the
- * USA
- * 
- * 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 above 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. 4. Neither the name
- * of the author nor the names of other contributors may be used to endorse
- * or promote products derived from this software without specific prior
- * written permission.
- * 
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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.
- * 
- * $FreeBSD: src/secure/lib/libcrypt/crypt.c,v 1.11 1999/08/28 01:30:24 peter
- * Exp $
- * 
- * This is an original implementation of the DES and the crypt(3) interfaces by
- * David Burren <davidb@werj.com.au>.
- * 
- * An excellent reference on the underlying algorithm (and related algorithms)
- * is:
- * 
- * B. Schneier, Applied Cryptography: protocols, algorithms, and source code in
- * C, John Wiley & Sons, 1994.
- * 
- * Note that in that book's description of DES the lookups for the initial,
- * pbox, and final permutations are inverted (this has been brought to the
- * attention of the author).  A list of errata for this book has been posted
- * to the sci.crypt newsgroup by the author and is available for FTP.
- * 
- * ARCHITECTURE ASSUMPTIONS: This code assumes that u_longs are 32 bits.  It
- * will probably not operate on 64-bit machines without modifications. It is
- * assumed that the 8-byte arrays passed by reference can be addressed as
- * arrays of u_longs (ie. the CPU is not picky about alignment).
- */
-
-#ifndef HAVE_DES_CRYPT
-
-#include <sys/types.h>
-#include <sys/param.h>
-#include <pwd.h>
-#include <string.h>
-
-static unsigned char IP[64] = {
-    58, 50, 42, 34, 26, 18, 10, 2, 60, 52, 44, 36, 28, 20, 12, 4,
-    62, 54, 46, 38, 30, 22, 14, 6, 64, 56, 48, 40, 32, 24, 16, 8,
-    57, 49, 41, 33, 25, 17, 9, 1, 59, 51, 43, 35, 27, 19, 11, 3,
-    61, 53, 45, 37, 29, 21, 13, 5, 63, 55, 47, 39, 31, 23, 15, 7
-};
-
-static unsigned char inv_key_perm[64];
-static unsigned char u_key_perm[56];
-static unsigned char key_perm[56] = {
-    57, 49, 41, 33, 25, 17, 9, 1, 58, 50, 42, 34, 26, 18,
-    10, 2, 59, 51, 43, 35, 27, 19, 11, 3, 60, 52, 44, 36,
-    63, 55, 47, 39, 31, 23, 15, 7, 62, 54, 46, 38, 30, 22,
-    14, 6, 61, 53, 45, 37, 29, 21, 13, 5, 28, 20, 12, 4
-};
-
-static unsigned char key_shifts[16] = {
-    1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1
-};
-
-static unsigned char inv_comp_perm[56];
-static unsigned char comp_perm[48] = {
-    14, 17, 11, 24, 1, 5, 3, 28, 15, 6, 21, 10,
-    23, 19, 12, 4, 26, 8, 16, 7, 27, 20, 13, 2,
-    41, 52, 31, 37, 47, 55, 30, 40, 51, 45, 33, 48,
-    44, 49, 39, 56, 34, 53, 46, 42, 50, 36, 29, 32
-};
-
-/*
- * No E box is used, as it's replaced by some ANDs, shifts, and ORs.
- */
-
-static unsigned char u_sbox[8][64];
-static unsigned char sbox[8][64] = {
-    {
-	14, 4, 13, 1, 2, 15, 11, 8, 3, 10, 6, 12, 5, 9, 0, 7,
-	0, 15, 7, 4, 14, 2, 13, 1, 10, 6, 12, 11, 9, 5, 3, 8,
-	4, 1, 14, 8, 13, 6, 2, 11, 15, 12, 9, 7, 3, 10, 5, 0,
-	15, 12, 8, 2, 4, 9, 1, 7, 5, 11, 3, 14, 10, 0, 6, 13
-    },
-    {
-	15, 1, 8, 14, 6, 11, 3, 4, 9, 7, 2, 13, 12, 0, 5, 10,
-	3, 13, 4, 7, 15, 2, 8, 14, 12, 0, 1, 10, 6, 9, 11, 5,
-	0, 14, 7, 11, 10, 4, 13, 1, 5, 8, 12, 6, 9, 3, 2, 15,
-	13, 8, 10, 1, 3, 15, 4, 2, 11, 6, 7, 12, 0, 5, 14, 9
-    },
-    {
-	10, 0, 9, 14, 6, 3, 15, 5, 1, 13, 12, 7, 11, 4, 2, 8,
-	13, 7, 0, 9, 3, 4, 6, 10, 2, 8, 5, 14, 12, 11, 15, 1,
-	13, 6, 4, 9, 8, 15, 3, 0, 11, 1, 2, 12, 5, 10, 14, 7,
-	1, 10, 13, 0, 6, 9, 8, 7, 4, 15, 14, 3, 11, 5, 2, 12
-    },
-    {
-	7, 13, 14, 3, 0, 6, 9, 10, 1, 2, 8, 5, 11, 12, 4, 15,
-	13, 8, 11, 5, 6, 15, 0, 3, 4, 7, 2, 12, 1, 10, 14, 9,
-	10, 6, 9, 0, 12, 11, 7, 13, 15, 1, 3, 14, 5, 2, 8, 4,
-	3, 15, 0, 6, 10, 1, 13, 8, 9, 4, 5, 11, 12, 7, 2, 14
-    },
-    {
-	2, 12, 4, 1, 7, 10, 11, 6, 8, 5, 3, 15, 13, 0, 14, 9,
-	14, 11, 2, 12, 4, 7, 13, 1, 5, 0, 15, 10, 3, 9, 8, 6,
-	4, 2, 1, 11, 10, 13, 7, 8, 15, 9, 12, 5, 6, 3, 0, 14,
-	11, 8, 12, 7, 1, 14, 2, 13, 6, 15, 0, 9, 10, 4, 5, 3
-    },
-    {
-	12, 1, 10, 15, 9, 2, 6, 8, 0, 13, 3, 4, 14, 7, 5, 11,
-	10, 15, 4, 2, 7, 12, 9, 5, 6, 1, 13, 14, 0, 11, 3, 8,
-	9, 14, 15, 5, 2, 8, 12, 3, 7, 0, 4, 10, 1, 13, 11, 6,
-	4, 3, 2, 12, 9, 5, 15, 10, 11, 14, 1, 7, 6, 0, 8, 13
-    },
-    {
-	4, 11, 2, 14, 15, 0, 8, 13, 3, 12, 9, 7, 5, 10, 6, 1,
-	13, 0, 11, 7, 4, 9, 1, 10, 14, 3, 5, 12, 2, 15, 8, 6,
-	1, 4, 11, 13, 12, 3, 7, 14, 10, 15, 6, 8, 0, 5, 9, 2,
-	6, 11, 13, 8, 1, 4, 10, 7, 9, 5, 0, 15, 14, 2, 3, 12
-    },
-    {
-	13, 2, 8, 4, 6, 15, 11, 1, 10, 9, 3, 14, 5, 0, 12, 7,
-	1, 15, 13, 8, 10, 3, 7, 4, 12, 5, 6, 11, 0, 14, 9, 2,
-	7, 11, 4, 1, 9, 12, 14, 2, 0, 6, 10, 13, 15, 3, 5, 8,
-	2, 1, 14, 7, 4, 10, 8, 13, 15, 12, 9, 0, 3, 5, 6, 11
-    }
-};
-
-static unsigned char un_pbox[32];
-static unsigned char pbox[32] = {
-    16, 7, 20, 21, 29, 12, 28, 17, 1, 15, 23, 26, 5, 18, 31, 10,
-    2, 8, 24, 14, 32, 27, 3, 9, 19, 13, 30, 6, 22, 11, 4, 25
-};
-
-static unsigned long bits32[32] = {
-    0x80000000, 0x40000000, 0x20000000, 0x10000000,
-    0x08000000, 0x04000000, 0x02000000, 0x01000000,
-    0x00800000, 0x00400000, 0x00200000, 0x00100000,
-    0x00080000, 0x00040000, 0x00020000, 0x00010000,
-    0x00008000, 0x00004000, 0x00002000, 0x00001000,
-    0x00000800, 0x00000400, 0x00000200, 0x00000100,
-    0x00000080, 0x00000040, 0x00000020, 0x00000010,
-    0x00000008, 0x00000004, 0x00000002, 0x00000001
-};
-
-static unsigned char bits8[8] = {0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01};
-
-static unsigned long saltbits;
-static long     old_salt;
-static unsigned long *bits28, *bits24;
-static unsigned char init_perm[64], final_perm[64];
-static unsigned long en_keysl[16], en_keysr[16];
-static unsigned long de_keysl[16], de_keysr[16];
-static int      des_initialised = 0;
-static unsigned char m_sbox[4][4096];
-static unsigned long psbox[4][256];
-static unsigned long ip_maskl[8][256], ip_maskr[8][256];
-static unsigned long fp_maskl[8][256], fp_maskr[8][256];
-static unsigned long key_perm_maskl[8][128], key_perm_maskr[8][128];
-static unsigned long comp_maskl[8][128], comp_maskr[8][128];
-static unsigned long old_rawkey0, old_rawkey1;
-
-static unsigned char ascii64[] =
-"./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
-/* 0000000000111111111122222222223333333333444444444455555555556666 */
-/* 0123456789012345678901234567890123456789012345678901234567890123 */
-
-static int
-ascii_to_bin(char ch)
-{
-    if (ch > 'z')
-	return 0;
-    if (ch >= 'a')
-	return ch - 'a' + 38;
-    if (ch > 'Z')
-	return 0;
-    if (ch >= 'A')
-	return ch - 'A' + 12;
-    if (ch > '9')
-	return 0;
-    if (ch >= '.')
-	return ch - '.';
-    return 0;
-}
-
-static void
-des_init()
-{
-    int             i, j, b, k, inbit, obit;
-    unsigned long  *p, *il, *ir, *fl, *fr;
-
-    old_rawkey0 = old_rawkey1 = 0L;
-    saltbits = 0L;
-    old_salt = 0L;
-    bits24 = (bits28 = bits32 + 4) + 4;
-
-    /*
-     * Invert the S-boxes, reordering the input bits.
-     */
-    for (i = 0; i < 8; i++)
-	for (j = 0; j < 64; j++) {
-	    b = (j & 0x20) | ((j & 1) << 4) | ((j >> 1) & 0xf);
-	    u_sbox[i][j] = sbox[i][b];
-	}
-
-    /*
-     * Convert the inverted S-boxes into 4 arrays of 8 bits. Each will handle
-     * 12 bits of the S-box input.
-     */
-    for (b = 0; b < 4; b++)
-	for (i = 0; i < 64; i++)
-	    for (j = 0; j < 64; j++)
-		m_sbox[b][(i << 6) | j] =
-		    (u_sbox[(b << 1)][i] << 4) |
-		    u_sbox[(b << 1) + 1][j];
-
-    /*
-     * Set up the initial & final permutations into a useful form, and
-     * initialise the inverted key permutation.
-     */
-    for (i = 0; i < 64; i++) {
-	init_perm[final_perm[i] = IP[i] - 1] = i;
-	inv_key_perm[i] = 255;
-    }
-
-    /*
-     * Invert the key permutation and initialise the inverted key compression
-     * permutation.
-     */
-    for (i = 0; i < 56; i++) {
-	u_key_perm[i] = key_perm[i] - 1;
-	inv_key_perm[key_perm[i] - 1] = i;
-	inv_comp_perm[i] = 255;
-    }
-
-    /*
-     * Invert the key compression permutation.
-     */
-    for (i = 0; i < 48; i++) {
-	inv_comp_perm[comp_perm[i] - 1] = i;
-    }
-
-    /*
-     * Set up the OR-mask arrays for the initial and final permutations, and
-     * for the key initial and compression permutations.
-     */
-    for (k = 0; k < 8; k++) {
-	for (i = 0; i < 256; i++) {
-	    *(il = &ip_maskl[k][i]) = 0L;
-	    *(ir = &ip_maskr[k][i]) = 0L;
-	    *(fl = &fp_maskl[k][i]) = 0L;
-	    *(fr = &fp_maskr[k][i]) = 0L;
-	    for (j = 0; j < 8; j++) {
-		inbit = 8 * k + j;
-		if (i & bits8[j]) {
-		    if ((obit = init_perm[inbit]) < 32)
-			*il |= bits32[obit];
-		    else
-			*ir |= bits32[obit - 32];
-		    if ((obit = final_perm[inbit]) < 32)
-			*fl |= bits32[obit];
-		    else
-			*fr |= bits32[obit - 32];
-		}
-	    }
-	}
-	for (i = 0; i < 128; i++) {
-	    *(il = &key_perm_maskl[k][i]) = 0L;
-	    *(ir = &key_perm_maskr[k][i]) = 0L;
-	    for (j = 0; j < 7; j++) {
-		inbit = 8 * k + j;
-		if (i & bits8[j + 1]) {
-		    if ((obit = inv_key_perm[inbit]) == 255)
-			continue;
-		    if (obit < 28)
-			*il |= bits28[obit];
-		    else
-			*ir |= bits28[obit - 28];
-		}
-	    }
-	    *(il = &comp_maskl[k][i]) = 0L;
-	    *(ir = &comp_maskr[k][i]) = 0L;
-	    for (j = 0; j < 7; j++) {
-		inbit = 7 * k + j;
-		if (i & bits8[j + 1]) {
-		    if ((obit = inv_comp_perm[inbit]) == 255)
-			continue;
-		    if (obit < 24)
-			*il |= bits24[obit];
-		    else
-			*ir |= bits24[obit - 24];
-		}
-	    }
-	}
-    }
-
-    /*
-     * Invert the P-box permutation, and convert into OR-masks for handling
-     * the output of the S-box arrays setup above.
-     */
-    for (i = 0; i < 32; i++)
-	un_pbox[pbox[i] - 1] = i;
-
-    for (b = 0; b < 4; b++)
-	for (i = 0; i < 256; i++) {
-	    *(p = &psbox[b][i]) = 0L;
-	    for (j = 0; j < 8; j++) {
-		if (i & bits8[j])
-		    *p |= bits32[un_pbox[8 * b + j]];
-	    }
-	}
-
-    des_initialised = 1;
-}
-
-static void
-setup_salt(long salt)
-{
-    unsigned long   obit, saltbit;
-    int             i;
-
-    if (salt == old_salt)
-	return;
-    old_salt = salt;
-
-    saltbits = 0L;
-    saltbit = 1;
-    obit = 0x800000;
-    for (i = 0; i < 24; i++) {
-	if (salt & saltbit)
-	    saltbits |= obit;
-	saltbit <<= 1;
-	obit >>= 1;
-    }
-}
-
-static int
-des_setkey(const char *key)
-{
-    unsigned long   k0, k1, rawkey0, rawkey1;
-    int             shifts, round;
-
-    if (!des_initialised)
-	des_init();
-
-    rawkey0 = ntohl(*(unsigned long *)key);
-    rawkey1 = ntohl(*(unsigned long *)(key + 4));
-
-    if ((rawkey0 | rawkey1)
-	&& rawkey0 == old_rawkey0
-	&& rawkey1 == old_rawkey1) {
-	/*
-	 * Already setup for this key. This optimisation fails on a zero key
-	 * (which is weak and has bad parity anyway) in order to simplify the
-	 * starting conditions.
-	 */
-	return 0;
-    }
-    old_rawkey0 = rawkey0;
-    old_rawkey1 = rawkey1;
-
-    /*
-     * Do key permutation and split into two 28-bit subkeys.
-     */
-    k0 = key_perm_maskl[0][rawkey0 >> 25]
-	| key_perm_maskl[1][(rawkey0 >> 17) & 0x7f]
-	| key_perm_maskl[2][(rawkey0 >> 9) & 0x7f]
-	| key_perm_maskl[3][(rawkey0 >> 1) & 0x7f]
-	| key_perm_maskl[4][rawkey1 >> 25]
-	| key_perm_maskl[5][(rawkey1 >> 17) & 0x7f]
-	| key_perm_maskl[6][(rawkey1 >> 9) & 0x7f]
-	| key_perm_maskl[7][(rawkey1 >> 1) & 0x7f];
-    k1 = key_perm_maskr[0][rawkey0 >> 25]
-	| key_perm_maskr[1][(rawkey0 >> 17) & 0x7f]
-	| key_perm_maskr[2][(rawkey0 >> 9) & 0x7f]
-	| key_perm_maskr[3][(rawkey0 >> 1) & 0x7f]
-	| key_perm_maskr[4][rawkey1 >> 25]
-	| key_perm_maskr[5][(rawkey1 >> 17) & 0x7f]
-	| key_perm_maskr[6][(rawkey1 >> 9) & 0x7f]
-	| key_perm_maskr[7][(rawkey1 >> 1) & 0x7f];
-    /*
-     * Rotate subkeys and do compression permutation.
-     */
-    shifts = 0;
-    for (round = 0; round < 16; round++) {
-	unsigned long   t0, t1;
-
-	shifts += key_shifts[round];
-
-	t0 = (k0 << shifts) | (k0 >> (28 - shifts));
-	t1 = (k1 << shifts) | (k1 >> (28 - shifts));
-
-	de_keysl[15 - round] =
-	    en_keysl[round] = comp_maskl[0][(t0 >> 21) & 0x7f]
-	    | comp_maskl[1][(t0 >> 14) & 0x7f]
-	    | comp_maskl[2][(t0 >> 7) & 0x7f]
-	    | comp_maskl[3][t0 & 0x7f]
-	    | comp_maskl[4][(t1 >> 21) & 0x7f]
-	    | comp_maskl[5][(t1 >> 14) & 0x7f]
-	    | comp_maskl[6][(t1 >> 7) & 0x7f]
-	    | comp_maskl[7][t1 & 0x7f];
-
-	de_keysr[15 - round] = en_keysr[round] =
-	    comp_maskr[0][(t0 >> 21) & 0x7f]
-	    | comp_maskr[1][(t0 >> 14) & 0x7f]
-	    | comp_maskr[2][(t0 >> 7) & 0x7f]
-	    | comp_maskr[3][t0 & 0x7f]
-	    | comp_maskr[4][(t1 >> 21) & 0x7f]
-	    | comp_maskr[5][(t1 >> 14) & 0x7f]
-	    | comp_maskr[6][(t1 >> 7) & 0x7f]
-	    | comp_maskr[7][t1 & 0x7f];
-    }
-    return 0;
-}
-
-static int
-do_des(unsigned long l_in, unsigned long r_in, unsigned long *l_out,
-       unsigned long *r_out, int count)
-{
-    /*
-     * l_in, r_in, l_out, and r_out are in pseudo-"big-endian" format.
-     */
-    unsigned long   l, r, *kl, *kr, *kl1, *kr1;
-    unsigned long   f, r48l, r48r;
-    int             round;
-
-    if (count == 0) {
-	return 1;
-    } else if (count > 0) {
-	/*
-	 * Encrypting
-	 */
-	kl1 = en_keysl;
-	kr1 = en_keysr;
-    } else {
-	/*
-	 * Decrypting
-	 */
-	count = -count;
-	kl1 = de_keysl;
-	kr1 = de_keysr;
-    }
-
-    /*
-     * Do initial permutation (IP).
-     */
-    l = ip_maskl[0][l_in >> 24]
-	| ip_maskl[1][(l_in >> 16) & 0xff]
-	| ip_maskl[2][(l_in >> 8) & 0xff]
-	| ip_maskl[3][l_in & 0xff]
-	| ip_maskl[4][r_in >> 24]
-	| ip_maskl[5][(r_in >> 16) & 0xff]
-	| ip_maskl[6][(r_in >> 8) & 0xff]
-	| ip_maskl[7][r_in & 0xff];
-    r = ip_maskr[0][l_in >> 24]
-	| ip_maskr[1][(l_in >> 16) & 0xff]
-	| ip_maskr[2][(l_in >> 8) & 0xff]
-	| ip_maskr[3][l_in & 0xff]
-	| ip_maskr[4][r_in >> 24]
-	| ip_maskr[5][(r_in >> 16) & 0xff]
-	| ip_maskr[6][(r_in >> 8) & 0xff]
-	| ip_maskr[7][r_in & 0xff];
-
-    while (count--) {
-	/*
-	 * Do each round.
-	 */
-	kl = kl1;
-	kr = kr1;
-	round = 16;
-	while (round--) {
-	    /*
-	     * Expand R to 48 bits (simulate the E-box).
-	     */
-	    r48l = ((r & 0x00000001) << 23)
-		| ((r & 0xf8000000) >> 9)
-		| ((r & 0x1f800000) >> 11)
-		| ((r & 0x01f80000) >> 13)
-		| ((r & 0x001f8000) >> 15);
-
-	    r48r = ((r & 0x0001f800) << 7)
-		| ((r & 0x00001f80) << 5)
-		| ((r & 0x000001f8) << 3)
-		| ((r & 0x0000001f) << 1)
-		| ((r & 0x80000000) >> 31);
-	    /*
-	     * Do salting for crypt() and friends, and XOR with the permuted
-	     * key.
-	     */
-	    f = (r48l ^ r48r) & saltbits;
-	    r48l ^= f ^ *kl++;
-	    r48r ^= f ^ *kr++;
-	    /*
-	     * Do sbox lookups (which shrink it back to 32 bits) and do the
-	     * pbox permutation at the same time.
-	     */
-	    f = psbox[0][m_sbox[0][r48l >> 12]]
-		| psbox[1][m_sbox[1][r48l & 0xfff]]
-		| psbox[2][m_sbox[2][r48r >> 12]]
-		| psbox[3][m_sbox[3][r48r & 0xfff]];
-	    /*
-	     * Now that we've permuted things, complete f().
-	     */
-	    f ^= l;
-	    l = r;
-	    r = f;
-	}
-	r = l;
-	l = f;
-    }
-    /*
-     * Do final permutation (inverse of IP).
-     */
-    *l_out = fp_maskl[0][l >> 24]
-	| fp_maskl[1][(l >> 16) & 0xff]
-	| fp_maskl[2][(l >> 8) & 0xff]
-	| fp_maskl[3][l & 0xff]
-	| fp_maskl[4][r >> 24]
-	| fp_maskl[5][(r >> 16) & 0xff]
-	| fp_maskl[6][(r >> 8) & 0xff]
-	| fp_maskl[7][r & 0xff];
-    *r_out = fp_maskr[0][l >> 24]
-	| fp_maskr[1][(l >> 16) & 0xff]
-	| fp_maskr[2][(l >> 8) & 0xff]
-	| fp_maskr[3][l & 0xff]
-	| fp_maskr[4][r >> 24]
-	| fp_maskr[5][(r >> 16) & 0xff]
-	| fp_maskr[6][(r >> 8) & 0xff]
-	| fp_maskr[7][r & 0xff];
-    return 0;
-}
-
-char           *
-crypt(char *key, char *setting)
-{
-    unsigned long   count, salt, l, r0, r1, keybuf[2];
-    unsigned char  *p, *q;
-    static unsigned char output[21];
-
-    if (!des_initialised)
-	des_init();
-    /*
-     * Copy the key, shifting each character up by one bit and padding with
-     * zeros.
-     */
-    q = (unsigned char *)keybuf;
-    while (q - (unsigned char *)keybuf - 8) {
-	if ((*q++ = *key << 1))
-	    key++;
-    }
-    if (des_setkey((char *)keybuf))
-	return NULL;
-
-    /*
-     * "old"-style: setting - 2 bytes of salt key - up to 8 characters
-     */
-    count = 25;
-
-    salt = (ascii_to_bin(setting[1]) << 6)
-	| ascii_to_bin(setting[0]);
-
-    output[0] = setting[0];
-    /*
-     * If the encrypted password that the salt was extracted from is only 1
-     * character long, the salt will be corrupted.  We need to ensure that
-     * the output string doesn't have an extra NUL in it!
-     */
-    output[1] = setting[1] ? setting[1] : output[0];
-
-    p = output + 2;
-
-    setup_salt(salt);
-    /*
-     * Do it.
-     */
-    if (do_des(0L, 0L, &r0, &r1, count))
-	return NULL;
-    /*
-     * Now encode the result...
-     */
-    l = (r0 >> 8);
-    *p++ = ascii64[(l >> 18) & 0x3f];
-    *p++ = ascii64[(l >> 12) & 0x3f];
-    *p++ = ascii64[(l >> 6) & 0x3f];
-    *p++ = ascii64[l & 0x3f];
-
-    l = (r0 << 16) | ((r1 >> 16) & 0xffff);
-    *p++ = ascii64[(l >> 18) & 0x3f];
-    *p++ = ascii64[(l >> 12) & 0x3f];
-    *p++ = ascii64[(l >> 6) & 0x3f];
-    *p++ = ascii64[l & 0x3f];
-
-    l = r1 << 2;
-    *p++ = ascii64[(l >> 12) & 0x3f];
-    *p++ = ascii64[(l >> 6) & 0x3f];
-    *p++ = ascii64[l & 0x3f];
-    *p = 0;
-
-    return (char *)output;
-}
-#endif