--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/arogue5/xcrypt.c	Thu Aug 09 22:58:48 2012 +0000
@@ -0,0 +1,694 @@
+/*
+ * FreeSec: libcrypt
+ *
+ * Copyright (C) 1994 David Burren
+ * All rights reserved.
+ *
+ * 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.
+ * 3. Neither the name(s) of the author(s) 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(S) 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(S) 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.
+ *
+ *
+ * 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.
+ *
+ * NOTE:
+ * This file has a static version of des_setkey() so that crypt.o exports
+ * only the crypt() interface. This is required to make binaries linked
+ * against crypt.o exportable or re-exportable from the USA.
+ */
+
+#include <sys/types.h>
+#include <string.h>
+
+#ifdef DEBUG
+# include <stdio.h>
+#endif
+#define _PASSWORD_EFMT1 '_'
+
+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	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 int 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 int saltbits;
+static int	old_salt;
+static unsigned int *bits28, *bits24;
+static unsigned char	init_perm[64], final_perm[64];
+static unsigned int en_keysl[16], en_keysr[16];
+static unsigned int de_keysl[16], de_keysr[16];
+static int	des_initialised = 0;
+static unsigned char	m_sbox[4][4096];
+static unsigned int psbox[4][256];
+static unsigned int ip_maskl[8][256], ip_maskr[8][256];
+static unsigned int fp_maskl[8][256], fp_maskr[8][256];
+static unsigned int key_perm_maskl[8][128], key_perm_maskr[8][128];
+static unsigned int comp_maskl[8][128], comp_maskr[8][128];
+static unsigned int old_rawkey0, old_rawkey1;
+
+static unsigned char	ascii64[] =
+	 "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
+/*	  0000000000111111111122222222223333333333444444444455555555556666 */
+/*	  0123456789012345678901234567890123456789012345678901234567890123 */
+
+static __inline int
+ascii_to_bin(ch)
+	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 int	*p, *il, *ir, *fl, *fr;
+
+	old_rawkey0 = old_rawkey1 = 0;
+	saltbits = 0;
+	old_salt = 0;
+	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++) {
+		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]) = 0;
+			*(ir = &ip_maskr[k][i]) = 0;
+			*(fl = &fp_maskl[k][i]) = 0;
+			*(fr = &fp_maskr[k][i]) = 0;
+			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]) = 0;
+			*(ir = &key_perm_maskr[k][i]) = 0;
+			for (j = 0; j < 7; j++) {
+				inbit = 8 * k + j;
+				if (i & bits8[j + 1]) {