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+/*
+ This bit of code was derived from the UFC-crypt package which
+ carries the following copyright
+
+ Modified for use by Samba by Andrew Tridgell, October 1994
+
+ Note that this routine is only faster on some machines. Under Linux 1.1.51
+ libc 4.5.26 I actually found this routine to be slightly slower.
+
+ Under SunOS I found a huge speedup by using these routines
+ (a factor of 20 or so)
+
+ Warning: I've had a report from Steve Kennedy <steve@gbnet.org>
+ that this crypt routine may sometimes get the wrong answer. Only
+ use UFC_CRYT if you really need it.
+
+*/
+
+#ifdef UFC_CRYPT
+
+/*
+ * UFC-crypt: ultra fast crypt(3) implementation
+ *
+ * Copyright (C) 1991, 1992, Free Software Foundation, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * @(#)crypt_util.c 2.31 02/08/92
+ *
+ * Support routines
+ *
+ */
+#include "includes.h"
+
+
+#ifndef long32
+#define long32 int32
+#endif
+
+#ifndef long64
+#define long64 int64
+#endif
+
+#ifndef ufc_long
+#define ufc_long unsigned
+#endif
+
+#ifndef _UFC_64_
+#define _UFC_32_
+#endif
+
+/*
+ * Permutation done once on the 56 bit
+ * key derived from the original 8 byte ASCII key.
+ */
+static int pc1[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
+};
+
+/*
+ * How much to rotate each 28 bit half of the pc1 permutated
+ * 56 bit key before using pc2 to give the i' key
+ */
+static int rots[16] = {
+ 1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1
+};
+
+/*
+ * Permutation giving the key
+ * of the i' DES round
+ */
+static int pc2[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
+};
+
+/*
+ * The E expansion table which selects
+ * bits from the 32 bit intermediate result.
+ */
+static int esel[48] = {
+ 32, 1, 2, 3, 4, 5, 4, 5, 6, 7, 8, 9,
+ 8, 9, 10, 11, 12, 13, 12, 13, 14, 15, 16, 17,
+ 16, 17, 18, 19, 20, 21, 20, 21, 22, 23, 24, 25,
+ 24, 25, 26, 27, 28, 29, 28, 29, 30, 31, 32, 1
+};
+static int e_inverse[64];
+
+/*
+ * Permutation done on the
+ * result of sbox lookups
+ */
+static int perm32[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
+};
+
+/*
+ * The sboxes
+ */
+static int sbox[8][4][16]= {
+ { { 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 }
+ }
+};
+
+/*
+ * This is the final
+ * permutation matrix
+ */
+static int final_perm[64] = {
+ 40, 8, 48, 16, 56, 24, 64, 32, 39, 7, 47, 15, 55, 23, 63, 31,
+ 38, 6, 46, 14, 54, 22, 62, 30, 37, 5, 45, 13, 53, 21, 61, 29,
+ 36, 4, 44, 12, 52, 20, 60, 28, 35, 3, 43, 11, 51, 19, 59, 27,
+ 34, 2, 42, 10, 50, 18, 58, 26, 33, 1, 41, 9, 49, 17, 57, 25
+};
+
+/*
+ * The 16 DES keys in BITMASK format
+ */
+#ifdef _UFC_32_
+long32 _ufc_keytab[16][2];
+#endif
+
+#ifdef _UFC_64_
+long64 _ufc_keytab[16];
+#endif
+
+
+#define ascii_to_bin(c) ((c)>='a'?(c-59):(c)>='A'?((c)-53):(c)-'.')
+#define bin_to_ascii(c) ((c)>=38?((c)-38+'a'):(c)>=12?((c)-12+'A'):(c)+'.')
+
+/* Macro to set a bit (0..23) */
+#define BITMASK(i) ( (1<<(11-(i)%12+3)) << ((i)<12?16:0) )
+
+/*
+ * sb arrays:
+ *
+ * Workhorses of the inner loop of the DES implementation.
+ * They do sbox lookup, shifting of this value, 32 bit
+ * permutation and E permutation for the next round.
+ *
+ * Kept in 'BITMASK' format.
+ */
+
+#ifdef _UFC_32_
+long32 _ufc_sb0[8192], _ufc_sb1[8192], _ufc_sb2[8192], _ufc_sb3[8192];
+static long32 *sb[4] = {_ufc_sb0, _ufc_sb1, _ufc_sb2, _ufc_sb3};
+#endif
+
+#ifdef _UFC_64_
+long64 _ufc_sb0[4096], _ufc_sb1[4096], _ufc_sb2[4096], _ufc_sb3[4096];
+static long64 *sb[4] = {_ufc_sb0, _ufc_sb1, _ufc_sb2, _ufc_sb3};
+#endif
+
+/*
+ * eperm32tab: do 32 bit permutation and E selection
+ *
+ * The first index is the byte number in the 32 bit value to be permuted
+ * - second - is the value of this byte
+ * - third - selects the two 32 bit values
+ *
+ * The table is used and generated internally in init_des to speed it up
+ */
+static ufc_long eperm32tab[4][256][2];
+
+/*
+ * do_pc1: permform pc1 permutation in the key schedule generation.
+ *
+ * The first index is the byte number in the 8 byte ASCII key
+ * - second - - the two 28 bits halfs of the result
+ * - third - selects the 7 bits actually used of each byte
+ *
+ * The result is kept with 28 bit per 32 bit with the 4 most significant
+ * bits zero.
+ */
+static ufc_long do_pc1[8][2][128];
+
+/*
+ * do_pc2: permform pc2 permutation in the key schedule generation.
+ *
+ * The first index is the septet number in the two 28 bit intermediate values
+ * - second - - - septet values
+ *
+ * Knowledge of the structure of the pc2 permutation is used.
+ *
+ * The result is kept with 28 bit per 32 bit with the 4 most significant
+ * bits zero.
+ */
+static ufc_long do_pc2[8][128];
+
+/*
+ * efp: undo an extra e selection and do final
+ * permutation giving the DES result.
+ *
+ * Invoked 6 bit a time on two 48 bit values
+ * giving two 32 bit longs.
+ */
+static ufc_long efp[16][64][2];
+
+static unsigned char bytemask[8] = {
+ 0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01
+};
+
+static ufc_long longmask[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
+};
+
+
+/*
+ * Silly rewrite of 'bzero'. I do so
+ * because some machines don't have
+ * bzero and some don't have memset.
+ */
+
+static void clearmem(start, cnt)
+ char *start;
+ int cnt;
+ { while(cnt--)
+ *start++ = '\0';
+ }
+
+static int initialized = 0;
+
+/* lookup a 6 bit value in sbox */
+
+#define s_lookup(i,s) sbox[(i)][(((s)>>4) & 0x2)|((s) & 0x1)][((s)>>1) & 0xf];
+
+/*
+ * Initialize unit - may be invoked directly
+ * by fcrypt users.
+ */
+
+static void ufc_init_des()
+ { int comes_from_bit;
+ int bit, sg;
+ ufc_long j;
+ ufc_long mask1, mask2;
+
+ /*
+ * Create the do_pc1 table used
+ * to affect pc1 permutation
+ * when generating keys
+ */
+ for(bit = 0; bit < 56; bit++) {
+ comes_from_bit = pc1[bit] - 1;
+ mask1 = bytemask[comes_from_bit % 8 + 1];
+ mask2 = longmask[bit % 28 + 4];
+ for(j = 0; j < 128; j++) {
+ if(j & mask1)
+ do_pc1[comes_from_bit / 8][bit / 28][j] |= mask2;
+ }
+ }
+
+ /*
+ * Create the do_pc2 table used
+ * to affect pc2 permutation when
+ * generating keys
+ */
+ for(bit = 0; bit < 48; bit++) {
+ comes_from_bit = pc2[bit] - 1;
+ mask1 = bytemask[comes_from_bit % 7 + 1];
+ mask2 = BITMASK(bit % 24);
+ for(j = 0; j < 128; j++) {
+ if(j & mask1)
+ do_pc2[comes_from_bit / 7][j] |= mask2;
+ }
+ }
+
+ /*
+ * Now generate the table used to do combined
+ * 32 bit permutation and e expansion
+ *
+ * We use it because we have to permute 16384 32 bit
+ * longs into 48 bit in order to initialize sb.
+ *
+ * Looping 48 rounds per permutation becomes
+ * just too slow...
+ *
+ */
+
+ clearmem((char*)eperm32tab, sizeof(eperm32tab));
+
+ for(bit = 0; bit < 48; bit++) {
+ ufc_long mask1,comes_from;
+
+ comes_from = perm32[esel[bit]-1]-1;
+ mask1 = bytemask[comes_from % 8];
+
+ for(j = 256; j--;) {
+ if(j & mask1)
+ eperm32tab[comes_from / 8][j][bit / 24] |= BITMASK(bit % 24);
+ }
+ }
+
+ /*
+ * Create the sb tables:
+ *
+ * For each 12 bit segment of an 48 bit intermediate
+ * result, the sb table precomputes the two 4 bit
+ * values of the sbox lookups done with the two 6
+ * bit halves, shifts them to their proper place,
+ * sends them through perm32 and finally E expands
+ * them so that they are ready for the next
+ * DES round.
+ *
+ */
+ for(sg = 0; sg < 4; sg++) {
+ int j1, j2;
+ int s1, s2;
+
+ for(j1 = 0; j1 < 64; j1++) {
+ s1 = s_lookup(2 * sg, j1);
+ for(j2 = 0; j2 < 64; j2++) {
+ ufc_long to_permute, inx;
+
+ s2 = s_lookup(2 * sg + 1, j2);
+ to_permute = ((s1 << 4) | s2) << (24 - 8 * sg);
+
+#ifdef _UFC_32_
+ inx = ((j1 << 6) | j2) << 1;
+ sb[sg][inx ] = eperm32tab[0][(to_permute >> 24) & 0xff][0];
+ sb[sg][inx+1] = eperm32tab[0][(to_permute >> 24) & 0xff][1];
+ sb[sg][inx ] |= eperm32tab[1][(to_permute >> 16) & 0xff][0];
+ sb[sg][inx+1] |= eperm32tab[1][(to_permute >> 16) & 0xff][1];
+ sb[sg][inx ] |= eperm32tab[2][(to_permute >> 8) & 0xff][0];
+ sb[sg][inx+1] |= eperm32tab[2][(to_permute >> 8) & 0xff][1];
+ sb[sg][inx ] |= eperm32tab[3][(to_permute) & 0xff][0];
+ sb[sg][inx+1] |= eperm32tab[3][(to_permute) & 0xff][1];
+#endif
+#ifdef _UFC_64_
+ inx = ((j1 << 6) | j2);
+ sb[sg][inx] =
+ ((long64)eperm32tab[0][(to_permute >> 24) & 0xff][0] << 32) |
+ (long64)eperm32tab[0][(to_permute >> 24) & 0xff][1];
+ sb[sg][inx] |=
+ ((long64)eperm32tab[1][(to_permute >> 16) & 0xff][0] << 32) |
+ (long64)eperm32tab[1][(to_permute >> 16) & 0xff][1];
+ sb[sg][inx] |=
+ ((long64)eperm32tab[2][(to_permute >> 8) & 0xff][0] << 32) |
+ (long64)eperm32tab[2][(to_permute >> 8) & 0xff][1];
+ sb[sg][inx] |=
+ ((long64)eperm32tab[3][(to_permute) & 0xff][0] << 32) |
+ (long64)eperm32tab[3][(to_permute) & 0xff][1];
+#endif
+ }
+ }
+ }
+
+ /*
+ * Create an inverse matrix for esel telling
+ * where to plug out bits if undoing it
+ */
+ for(bit=48; bit--;) {
+ e_inverse[esel[bit] - 1 ] = bit;
+ e_inverse[esel[bit] - 1 + 32] = bit + 48;
+ }
+
+ /*
+ * create efp: the matrix used to
+ * undo the E expansion and effect final permutation
+ */
+ clearmem((char*)efp, sizeof efp);
+ for(bit = 0; bit < 64; bit++) {
+ int o_bit, o_long;
+ ufc_long word_value, mask1, mask2;
+ int comes_from_f_bit, comes_from_e_bit;
+ int comes_from_word, bit_within_word;
+
+ /* See where bit i belongs in the two 32 bit long's */
+ o_long = bit / 32; /* 0..1 */
+ o_bit = bit % 32; /* 0..31 */
+
+ /*
+ * And find a bit in the e permutated value setting this bit.
+ *
+ * Note: the e selection may have selected the same bit several
+ * times. By the initialization of e_inverse, we only look
+ * for one specific instance.
+ */
+ comes_from_f_bit = final_perm[bit] - 1; /* 0..63 */
+ comes_from_e_bit = e_inverse[comes_from_f_bit]; /* 0..95 */
+ comes_from_word = comes_from_e_bit / 6; /* 0..15 */
+ bit_within_word = comes_from_e_bit % 6; /* 0..5 */
+
+ mask1 = longmask[bit_within_word + 26];
+ mask2 = longmask[o_bit];
+
+ for(word_value = 64; word_value--;) {
+ if(word_value & mask1)
+ efp[comes_from_word][word_value][o_long] |= mask2;
+ }
+ }
+ initialized++;
+ }
+
+/*
+ * Process the elements of the sb table permuting the
+ * bits swapped in the expansion by the current salt.
+ */
+
+#ifdef _UFC_32_
+static void shuffle_sb(k, saltbits)
+ long32 *k;
+ ufc_long saltbits;
+ { ufc_long j;
+ long32 x;
+ for(j=4096; j--;) {
+ x = (k[0] ^ k[1]) & (long32)saltbits;
+ *k++ ^= x;
+ *k++ ^= x;
+ }
+ }
+#endif
+
+#ifdef _UFC_64_
+static void shuffle_sb(k, saltbits)
+ long64 *k;
+ ufc_long saltbits;
+ { ufc_long j;
+ long64 x;
+ for(j=4096; j--;) {
+ x = ((*k >> 32) ^ *k) & (long64)saltbits;
+ *k++ ^= (x << 32) | x;
+ }
+ }
+#endif
+
+/*
+ * Setup the unit for a new salt
+ * Hopefully we'll not see a new salt in each crypt call.
+ */
+
+static unsigned char current_salt[3] = "&&"; /* invalid value */
+static ufc_long current_saltbits = 0;
+static int direction = 0;
+
+static void setup_salt(char *s1)
+ { ufc_long i, j, saltbits;
+ unsigned char *s2 = (unsigned char *)s1;
+
+ if(!initialized)
+ ufc_init_des();
+
+ if(s2[0] == current_salt[0] && s2[1] == current_salt[1])
+ return;
+ current_salt[0] = s2[0]; current_salt[1] = s2[1];
+
+ /*
+ * This is the only crypt change to DES:
+ * entries are swapped in the expansion table
+ * according to the bits set in the salt.
+ */
+ saltbits = 0;
+ for(i = 0; i < 2; i++) {
+ long c=ascii_to_bin(s2[i]);
+ if(c < 0 || c > 63)
+ c = 0;
+ for(j = 0; j < 6; j++) {
+ if((c >> j) & 0x1)
+ saltbits |= BITMASK(6 * i + j);
+ }
+ }
+
+ /*
+ * Permute the sb table values
+ * to reflect the changed e
+ * selection table
+ */
+ shuffle_sb(_ufc_sb0, current_saltbits ^ saltbits);
+ shuffle_sb(_ufc_sb1, current_saltbits ^ saltbits);
+ shuffle_sb(_ufc_sb2, current_saltbits ^ saltbits);
+ shuffle_sb(_ufc_sb3, current_saltbits ^ saltbits);
+
+ current_saltbits = saltbits;
+ }
+
+static void ufc_mk_keytab(key)
+ char *key;
+ { ufc_long v1, v2, *k1;
+ int i;
+#ifdef _UFC_32_
+ long32 v, *k2 = &_ufc_keytab[0][0];
+#endif
+#ifdef _UFC_64_
+ long64 v, *k2 = &_ufc_keytab[0];
+#endif
+
+ v1 = v2 = 0; k1 = &do_pc1[0][0][0];
+ for(i = 8; i--;) {
+ v1 |= k1[*key & 0x7f]; k1 += 128;
+ v2 |= k1[*key++ & 0x7f]; k1 += 128;
+ }
+
+ for(i = 0; i < 16; i++) {
+ k1 = &do_pc2[0][0];
+
+ v1 = (v1 << rots[i]) | (v1 >> (28 - rots[i]));
+ v = k1[(v1 >> 21) & 0x7f]; k1 += 128;
+ v |= k1[(v1 >> 14) & 0x7f]; k1 += 128;
+ v |= k1[(v1 >> 7) & 0x7f]; k1 += 128;
+ v |= k1[(v1 ) & 0x7f]; k1 += 128;
+
+#ifdef _UFC_32_
+ *k2++ = v;
+ v = 0;
+#endif
+#ifdef _UFC_64_
+ v <<= 32;
+#endif
+
+ v2 = (v2 << rots[i]) | (v2 >> (28 - rots[i]));
+ v |= k1[(v2 >> 21) & 0x7f]; k1 += 128;
+ v |= k1[(v2 >> 14) & 0x7f]; k1 += 128;
+ v |= k1[(v2 >> 7) & 0x7f]; k1 += 128;
+ v |= k1[(v2 ) & 0x7f];
+
+ *k2++ = v;
+ }
+
+ direction = 0;
+ }
+
+/*
+ * Undo an extra E selection and do final permutations
+ */
+
+ufc_long *_ufc_dofinalperm(l1, l2, r1, r2)
+ ufc_long l1,l2,r1,r2;
+ { ufc_long v1, v2, x;
+ static ufc_long ary[2];
+
+ x = (l1 ^ l2) & current_saltbits; l1 ^= x; l2 ^= x;
+ x = (r1 ^ r2) & current_saltbits; r1 ^= x; r2 ^= x;
+
+ v1=v2=0; l1 >>= 3; l2 >>= 3; r1 >>= 3; r2 >>= 3;
+
+ v1 |= efp[15][ r2 & 0x3f][0]; v2 |= efp[15][ r2 & 0x3f][1];
+ v1 |= efp[14][(r2 >>= 6) & 0x3f][0]; v2 |= efp[14][ r2 & 0x3f][1];
+ v1 |= efp[13][(r2 >>= 10) & 0x3f][0]; v2 |= efp[13][ r2 & 0x3f][1];
+ v1 |= efp[12][(r2 >>= 6) & 0x3f][0]; v2 |= efp[12][ r2 & 0x3f][1];
+
+ v1 |= efp[11][ r1 & 0x3f][0]; v2 |= efp[11][ r1 & 0x3f][1];
+ v1 |= efp[10][(r1 >>= 6) & 0x3f][0]; v2 |= efp[10][ r1 & 0x3f][1];
+ v1 |= efp[ 9][(r1 >>= 10) & 0x3f][0]; v2 |= efp[ 9][ r1 & 0x3f][1];
+ v1 |= efp[ 8][(r1 >>= 6) & 0x3f][0]; v2 |= efp[ 8][ r1 & 0x3f][1];
+
+ v1 |= efp[ 7][ l2 & 0x3f][0]; v2 |= efp[ 7][ l2 & 0x3f][1];
+ v1 |= efp[ 6][(l2 >>= 6) & 0x3f][0]; v2 |= efp[ 6][ l2 & 0x3f][1];
+ v1 |= efp[ 5][(l2 >>= 10) & 0x3f][0]; v2 |= efp[ 5][ l2 & 0x3f][1];
+ v1 |= efp[ 4][(l2 >>= 6) & 0x3f][0]; v2 |= efp[ 4][ l2 & 0x3f][1];
+
+ v1 |= efp[ 3][ l1 & 0x3f][0]; v2 |= efp[ 3][ l1 & 0x3f][1];
+ v1 |= efp[ 2][(l1 >>= 6) & 0x3f][0]; v2 |= efp[ 2][ l1 & 0x3f][1];
+ v1 |= efp[ 1][(l1 >>= 10) & 0x3f][0]; v2 |= efp[ 1][ l1 & 0x3f][1];
+ v1 |= efp[ 0][(l1 >>= 6) & 0x3f][0]; v2 |= efp[ 0][ l1 & 0x3f][1];
+
+ ary[0] = v1; ary[1] = v2;
+ return ary;
+ }
+
+/*
+ * crypt only: convert from 64 bit to 11 bit ASCII
+ * prefixing with the salt
+ */
+
+static char *output_conversion(v1, v2, salt)
+ ufc_long v1, v2;
+ char *salt;
+ { static char outbuf[14];
+ int i, s;
+
+ outbuf[0] = salt[0];
+ outbuf[1] = salt[1] ? salt[1] : salt[0];
+
+ for(i = 0; i < 5; i++)
+ outbuf[i + 2] = bin_to_ascii((v1 >> (26 - 6 * i)) & 0x3f);
+
+ s = (v2 & 0xf) << 2;
+ v2 = (v2 >> 2) | ((v1 & 0x3) << 30);
+
+ for(i = 5; i < 10; i++)
+ outbuf[i + 2] = bin_to_ascii((v2 >> (56 - 6 * i)) & 0x3f);
+
+ outbuf[12] = bin_to_ascii(s);
+ outbuf[13] = 0;
+
+ return outbuf;
+ }
+
+ufc_long *_ufc_doit();
+
+/*
+ * UNIX crypt function
+ */
+
+char *ufc_crypt(char *key,char *salt)
+ { ufc_long *s;
+ char ktab[9];
+
+ /*
+ * Hack DES tables according to salt
+ */
+ setup_salt(salt);
+
+ /*
+ * Setup key schedule
+ */
+ clearmem(ktab, sizeof ktab);
+ StrnCpy(ktab, key, 8);
+ ufc_mk_keytab(ktab);
+
+ /*
+ * Go for the 25 DES encryptions
+ */
+ s = _ufc_doit((ufc_long)0, (ufc_long)0,
+ (ufc_long)0, (ufc_long)0, (ufc_long)25);
+
+ /*
+ * And convert back to 6 bit ASCII
+ */
+ return output_conversion(s[0], s[1], salt);
+ }
+
+
+#ifdef _UFC_32_
+
+/*
+ * 32 bit version
+ */
+
+extern long32 _ufc_keytab[16][2];
+extern long32 _ufc_sb0[], _ufc_sb1[], _ufc_sb2[], _ufc_sb3[];
+
+#define SBA(sb, v) (*(long32*)((char*)(sb)+(v)))
+
+ufc_long *_ufc_doit(l1, l2, r1, r2, itr)
+ ufc_long l1, l2, r1, r2, itr;
+ { int i;
+ long32 s, *k;
+
+ while(itr--) {
+ k = &_ufc_keytab[0][0];
+ for(i=8; i--; ) {
+ s = *k++ ^ r1;
+ l1 ^= SBA(_ufc_sb1, s & 0xffff); l2 ^= SBA(_ufc_sb1, (s & 0xffff)+4);
+ l1 ^= SBA(_ufc_sb0, s >>= 16); l2 ^= SBA(_ufc_sb0, (s) +4);
+ s = *k++ ^ r2;
+ l1 ^= SBA(_ufc_sb3, s & 0xffff); l2 ^= SBA(_ufc_sb3, (s & 0xffff)+4);
+ l1 ^= SBA(_ufc_sb2, s >>= 16); l2 ^= SBA(_ufc_sb2, (s) +4);
+
+ s = *k++ ^ l1;
+ r1 ^= SBA(_ufc_sb1, s & 0xffff); r2 ^= SBA(_ufc_sb1, (s & 0xffff)+4);
+ r1 ^= SBA(_ufc_sb0, s >>= 16); r2 ^= SBA(_ufc_sb0, (s) +4);
+ s = *k++ ^ l2;
+ r1 ^= SBA(_ufc_sb3, s & 0xffff); r2 ^= SBA(_ufc_sb3, (s & 0xffff)+4);
+ r1 ^= SBA(_ufc_sb2, s >>= 16); r2 ^= SBA(_ufc_sb2, (s) +4);
+ }
+ s=l1; l1=r1; r1=s; s=l2; l2=r2; r2=s;
+ }
+ return _ufc_dofinalperm(l1, l2, r1, r2);
+ }
+
+#endif
+
+#ifdef _UFC_64_
+
+/*
+ * 64 bit version
+ */
+
+extern long64 _ufc_keytab[16];
+extern long64 _ufc_sb0[], _ufc_sb1[], _ufc_sb2[], _ufc_sb3[];
+
+#define SBA(sb, v) (*(long64*)((char*)(sb)+(v)))
+
+ufc_long *_ufc_doit(l1, l2, r1, r2, itr)
+ ufc_long l1, l2, r1, r2, itr;
+ { int i;
+ long64 l, r, s, *k;
+
+ l = (((long64)l1) << 32) | ((long64)l2);
+ r = (((long64)r1) << 32) | ((long64)r2);
+
+ while(itr--) {
+ k = &_ufc_keytab[0];
+ for(i=8; i--; ) {
+ s = *k++ ^ r;
+ l ^= SBA(_ufc_sb3, (s >> 0) & 0xffff);
+ l ^= SBA(_ufc_sb2, (s >> 16) & 0xffff);
+ l ^= SBA(_ufc_sb1, (s >> 32) & 0xffff);
+ l ^= SBA(_ufc_sb0, (s >> 48) & 0xffff);
+
+ s = *k++ ^ l;
+ r ^= SBA(_ufc_sb3, (s >> 0) & 0xffff);
+ r ^= SBA(_ufc_sb2, (s >> 16) & 0xffff);
+ r ^= SBA(_ufc_sb1, (s >> 32) & 0xffff);
+ r ^= SBA(_ufc_sb0, (s >> 48) & 0xffff);
+ }
+ s=l; l=r; r=s;
+ }
+
+ l1 = l >> 32; l2 = l & 0xffffffff;
+ r1 = r >> 32; r2 = r & 0xffffffff;
+ return _ufc_dofinalperm(l1, l2, r1, r2);
+ }
+
+#endif
+
+
+#else
+int ufc_dummy_procedure(void)
+{return 0;}
+#endif
generated by cgit (git 2.34.1) at 2024-11-06 02:38:46 +0000