BABYL OPTIONS: Version: 5 Labels: Note: This is the header of an rmail file. Note: If you are seeing it in rmail, Note: it means the file has no messages in it.  0, unseen,, *** EOOH *** From: glad@daimi.aau.dk (Michael Glad) Newsgroups: comp.sources.misc Subject: v28i116: ufc-crypt - fast crypt/fcrypt routines, Part02/02 Date: 18 Mar 92 14:40:51 GMT Sender: aem@aber.ac.uk (Alec David Muffett) Followup-To: comp.sources.d Organization: University College of Wales, Aberystwyth Approved: aem@aber.ac.uk X-Md4-Signature: 3dc97c8443c2770033c683d270568e77 Submitted-by: glad@daimi.aau.dk (Michael Glad) Posting-number: Volume 28, Issue 116 Archive-name: ufc-crypt/part02 Environment: UNIX, 32BIT Supersedes: ufc-crypt: Volume 23, 97-98 #! /bin/sh # it by saving it into a file and typing "sh file". To overwrite existing # files, type "sh file -c". 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END_OF_FILE if test 25265 -ne `wc -c <'COPYING'`; then echo shar: \"'COPYING'\" unpacked with wrong size! fi # end of 'COPYING' fi if test -f 'crypt_util.c' -a "${1}" != "-c" ; then echo shar: Will not clobber existing file \"'crypt_util.c'\" else echo shar: Extracting \"'crypt_util.c'\" \(22326 characters\) sed "s/^X//" >'crypt_util.c' <<'END_OF_FILE' X/* X * UFC-crypt: ultra fast crypt(3) implementation X * X * Copyright (C) 1991, 1992, Free Software Foundation, Inc. X * X * This library is free software; you can redistribute it and/or X * modify it under the terms of the GNU Library General Public X * License as published by the Free Software Foundation; either X * version 2 of the License, or (at your option) any later version. X * X * This library is distributed in the hope that it will be useful, X * but WITHOUT ANY WARRANTY; without even the implied warranty of X * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU X * Library General Public License for more details. X * X * You should have received a copy of the GNU Library General Public X * License along with this library; if not, write to the Free X * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. X * X * @(#)crypt_util.c 2.31 02/08/92 X * X * Support routines X * X */ X X#ifdef DEBUG X#include X#endif X X#ifndef STATIC X#define STATIC static X#endif X X#include "patchlevel.h" X#include "ufc-crypt.h" X Xstatic char patchlevel_str[] = PATCHLEVEL; X X/* X * Permutation done once on the 56 bit X * key derived from the original 8 byte ASCII key. X */ Xstatic int pc1[56] = { X 57, 49, 41, 33, 25, 17, 9, 1, 58, 50, 42, 34, 26, 18, X 10, 2, 59, 51, 43, 35, 27, 19, 11, 3, 60, 52, 44, 36, X 63, 55, 47, 39, 31, 23, 15, 7, 62, 54, 46, 38, 30, 22, X 14, 6, 61, 53, 45, 37, 29, 21, 13, 5, 28, 20, 12, 4 X}; X X/* X * How much to rotate each 28 bit half of the pc1 permutated X * 56 bit key before using pc2 to give the i' key X */ Xstatic int rots[16] = { X 1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1 X}; X X/* X * Permutation giving the key X * of the i' DES round X */ Xstatic int pc2[48] = { X 14, 17, 11, 24, 1, 5, 3, 28, 15, 6, 21, 10, X 23, 19, 12, 4, 26, 8, 16, 7, 27, 20, 13, 2, X 41, 52, 31, 37, 47, 55, 30, 40, 51, 45, 33, 48, X 44, 49, 39, 56, 34, 53, 46, 42, 50, 36, 29, 32 X}; X X/* X * The E expansion table which selects X * bits from the 32 bit intermediate result. X */ Xstatic int esel[48] = { X 32, 1, 2, 3, 4, 5, 4, 5, 6, 7, 8, 9, X 8, 9, 10, 11, 12, 13, 12, 13, 14, 15, 16, 17, X 16, 17, 18, 19, 20, 21, 20, 21, 22, 23, 24, 25, X 24, 25, 26, 27, 28, 29, 28, 29, 30, 31, 32, 1 X}; Xstatic int e_inverse[64]; X X/* X * Permutation done on the X * result of sbox lookups X */ Xstatic int perm32[32] = { X 16, 7, 20, 21, 29, 12, 28, 17, 1, 15, 23, 26, 5, 18, 31, 10, X 2, 8, 24, 14, 32, 27, 3, 9, 19, 13, 30, 6, 22, 11, 4, 25 X}; X X/* X * The sboxes X */ Xstatic int sbox[8][4][16]= { X { { 14, 4, 13, 1, 2, 15, 11, 8, 3, 10, 6, 12, 5, 9, 0, 7 }, X { 0, 15, 7, 4, 14, 2, 13, 1, 10, 6, 12, 11, 9, 5, 3, 8 }, X { 4, 1, 14, 8, 13, 6, 2, 11, 15, 12, 9, 7, 3, 10, 5, 0 }, X { 15, 12, 8, 2, 4, 9, 1, 7, 5, 11, 3, 14, 10, 0, 6, 13 } X }, X X { { 15, 1, 8, 14, 6, 11, 3, 4, 9, 7, 2, 13, 12, 0, 5, 10 }, X { 3, 13, 4, 7, 15, 2, 8, 14, 12, 0, 1, 10, 6, 9, 11, 5 }, X { 0, 14, 7, 11, 10, 4, 13, 1, 5, 8, 12, 6, 9, 3, 2, 15 }, X { 13, 8, 10, 1, 3, 15, 4, 2, 11, 6, 7, 12, 0, 5, 14, 9 } X }, X X { { 10, 0, 9, 14, 6, 3, 15, 5, 1, 13, 12, 7, 11, 4, 2, 8 }, X { 13, 7, 0, 9, 3, 4, 6, 10, 2, 8, 5, 14, 12, 11, 15, 1 }, X { 13, 6, 4, 9, 8, 15, 3, 0, 11, 1, 2, 12, 5, 10, 14, 7 }, X { 1, 10, 13, 0, 6, 9, 8, 7, 4, 15, 14, 3, 11, 5, 2, 12 } X }, X X { { 7, 13, 14, 3, 0, 6, 9, 10, 1, 2, 8, 5, 11, 12, 4, 15 }, X { 13, 8, 11, 5, 6, 15, 0, 3, 4, 7, 2, 12, 1, 10, 14, 9 }, X { 10, 6, 9, 0, 12, 11, 7, 13, 15, 1, 3, 14, 5, 2, 8, 4 }, X { 3, 15, 0, 6, 10, 1, 13, 8, 9, 4, 5, 11, 12, 7, 2, 14 } X }, X X { { 2, 12, 4, 1, 7, 10, 11, 6, 8, 5, 3, 15, 13, 0, 14, 9 }, X { 14, 11, 2, 12, 4, 7, 13, 1, 5, 0, 15, 10, 3, 9, 8, 6 }, X { 4, 2, 1, 11, 10, 13, 7, 8, 15, 9, 12, 5, 6, 3, 0, 14 }, X { 11, 8, 12, 7, 1, 14, 2, 13, 6, 15, 0, 9, 10, 4, 5, 3 } X }, X X { { 12, 1, 10, 15, 9, 2, 6, 8, 0, 13, 3, 4, 14, 7, 5, 11 }, X { 10, 15, 4, 2, 7, 12, 9, 5, 6, 1, 13, 14, 0, 11, 3, 8 }, X { 9, 14, 15, 5, 2, 8, 12, 3, 7, 0, 4, 10, 1, 13, 11, 6 }, X { 4, 3, 2, 12, 9, 5, 15, 10, 11, 14, 1, 7, 6, 0, 8, 13 } X }, X X { { 4, 11, 2, 14, 15, 0, 8, 13, 3, 12, 9, 7, 5, 10, 6, 1 }, X { 13, 0, 11, 7, 4, 9, 1, 10, 14, 3, 5, 12, 2, 15, 8, 6 }, X { 1, 4, 11, 13, 12, 3, 7, 14, 10, 15, 6, 8, 0, 5, 9, 2 }, X { 6, 11, 13, 8, 1, 4, 10, 7, 9, 5, 0, 15, 14, 2, 3, 12 } X }, X X { { 13, 2, 8, 4, 6, 15, 11, 1, 10, 9, 3, 14, 5, 0, 12, 7 }, X { 1, 15, 13, 8, 10, 3, 7, 4, 12, 5, 6, 11, 0, 14, 9, 2 }, X { 7, 11, 4, 1, 9, 12, 14, 2, 0, 6, 10, 13, 15, 3, 5, 8 }, X { 2, 1, 14, 7, 4, 10, 8, 13, 15, 12, 9, 0, 3, 5, 6, 11 } X } X}; X X/* X * This is the initial X * permutation matrix X */ Xstatic int initial_perm[64] = { X 58, 50, 42, 34, 26, 18, 10, 2, 60, 52, 44, 36, 28, 20, 12, 4, X 62, 54, 46, 38, 30, 22, 14, 6, 64, 56, 48, 40, 32, 24, 16, 8, X 57, 49, 41, 33, 25, 17, 9, 1, 59, 51, 43, 35, 27, 19, 11, 3, X 61, 53, 45, 37, 29, 21, 13, 5, 63, 55, 47, 39, 31, 23, 15, 7 X}; X X/* X * This is the final X * permutation matrix X */ Xstatic int final_perm[64] = { X 40, 8, 48, 16, 56, 24, 64, 32, 39, 7, 47, 15, 55, 23, 63, 31, X 38, 6, 46, 14, 54, 22, 62, 30, 37, 5, 45, 13, 53, 21, 61, 29, X 36, 4, 44, 12, 52, 20, 60, 28, 35, 3, 43, 11, 51, 19, 59, 27, X 34, 2, 42, 10, 50, 18, 58, 26, 33, 1, 41, 9, 49, 17, 57, 25 X}; X X/* X * The 16 DES keys in BITMASK format X */ X#ifdef _UFC_32_ Xlong32 _ufc_keytab[16][2]; X#endif X#ifdef _UFC_64_ Xlong64 _ufc_keytab[16]; X#endif X X#define ascii_to_bin(c) ((c)>='a'?(c-59):(c)>='A'?((c)-53):(c)-'.') X#define bin_to_ascii(c) ((c)>=38?((c)-38+'a'):(c)>=12?((c)-12+'A'):(c)+'.') X X/* Macro to set a bit (0..23) */ X#define BITMASK(i) ( (1<<(11-(i)%12+3)) << ((i)<12?16:0) ) X X/* X * sb arrays: X * X * Workhorses of the inner loop of the DES implementation. X * They do sbox lookup, shifting of this value, 32 bit X * permutation and E permutation for the next round. X * X * Kept in 'BITMASK' format. X */ X X#ifdef _UFC_32_ Xlong32 _ufc_sb0[8192], _ufc_sb1[8192], _ufc_sb2[8192], _ufc_sb3[8192]; Xstatic long32 *sb[4] = {_ufc_sb0, _ufc_sb1, _ufc_sb2, _ufc_sb3}; X#endif X X#ifdef _UFC_64_ Xlong64 _ufc_sb0[4096], _ufc_sb1[4096], _ufc_sb2[4096], _ufc_sb3[4096]; Xstatic long64 *sb[4] = {_ufc_sb0, _ufc_sb1, _ufc_sb2, _ufc_sb3}; X#endif X X/* X * eperm32tab: do 32 bit permutation and E selection X * X * The first index is the byte number in the 32 bit value to be permuted X * - second - is the value of this byte X * - third - selects the two 32 bit values X * X * The table is used and generated internally in init_des to speed it up X */ Xstatic ufc_long eperm32tab[4][256][2]; X X/* X * do_pc1: permform pc1 permutation in the key schedule generation. X * X * The first index is the byte number in the 8 byte ASCII key X * - second - - the two 28 bits halfs of the result X * - third - selects the 7 bits actually used of each byte X * X * The result is kept with 28 bit per 32 bit with the 4 most significant X * bits zero. X */ Xstatic ufc_long do_pc1[8][2][128]; X X/* X * do_pc2: permform pc2 permutation in the key schedule generation. X * X * The first index is the septet number in the two 28 bit intermediate values X * - second - - - septet values X * X * Knowledge of the structure of the pc2 permutation is used. X * X * The result is kept with 28 bit per 32 bit with the 4 most significant X * bits zero. X */ Xstatic ufc_long do_pc2[8][128]; X X/* X * efp: undo an extra e selection and do final X * permutation giving the DES result. X * X * Invoked 6 bit a time on two 48 bit values X * giving two 32 bit longs. X */ Xstatic ufc_long efp[16][64][2]; X Xstatic unsigned char bytemask[8] = { X 0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01 X}; X Xstatic ufc_long longmask[32] = { X 0x80000000, 0x40000000, 0x20000000, 0x10000000, X 0x08000000, 0x04000000, 0x02000000, 0x01000000, X 0x00800000, 0x00400000, 0x00200000, 0x00100000, X 0x00080000, 0x00040000, 0x00020000, 0x00010000, X 0x00008000, 0x00004000, 0x00002000, 0x00001000, X 0x00000800, 0x00000400, 0x00000200, 0x00000100, X 0x00000080, 0x00000040, 0x00000020, 0x00000010, X 0x00000008, 0x00000004, 0x00000002, 0x00000001 X}; X X#ifdef DEBUG X Xpr_bits(a, n) X ufc_long *a; X int n; X { ufc_long i, j, t, tmp; X n /= 8; X for(i = 0; i < n; i++) { X tmp=0; X for(j = 0; j < 8; j++) { X t=8*i+j; X tmp|=(a[t/24] & BITMASK(t % 24))?bytemask[j]:0; X } X (void)printf("%02x ",tmp); X } X printf(" "); X } X Xstatic set_bits(v, b) X ufc_long v; X ufc_long *b; X { ufc_long i; X *b = 0; X for(i = 0; i < 24; i++) { X if(v & longmask[8 + i]) X *b |= BITMASK(i); X } X } X X#endif X X/* X * Silly rewrite of 'bzero'. I do so X * because some machines don't have X * bzero and some don't have memset. X */ X XSTATIC void clearmem(start, cnt) X char *start; X int cnt; X { while(cnt--) X *start++ = '\0'; X } X Xstatic int initialized = 0; X X/* lookup a 6 bit value in sbox */ X X#define s_lookup(i,s) sbox[(i)][(((s)>>4) & 0x2)|((s) & 0x1)][((s)>>1) & 0xf]; X X/* X * Initialize unit - may be invoked directly X * by fcrypt users. X */ X Xvoid init_des() X { int comes_from_bit; X int bit, sg; X ufc_long j; X ufc_long mask1, mask2; X X /* X * Create the do_pc1 table used X * to affect pc1 permutation X * when generating keys X */ X for(bit = 0; bit < 56; bit++) { X comes_from_bit = pc1[bit] - 1; X mask1 = bytemask[comes_from_bit % 8 + 1]; X mask2 = longmask[bit % 28 + 4]; X for(j = 0; j < 128; j++) { X if(j & mask1) X do_pc1[comes_from_bit / 8][bit / 28][j] |= mask2; X } X } X X /* X * Create the do_pc2 table used X * to affect pc2 permutation when X * generating keys X */ X for(bit = 0; bit < 48; bit++) { X comes_from_bit = pc2[bit] - 1; X mask1 = bytemask[comes_from_bit % 7 + 1]; X mask2 = BITMASK(bit % 24); X for(j = 0; j < 128; j++) { X if(j & mask1) X do_pc2[comes_from_bit / 7][j] |= mask2; X } X } X X /* X * Now generate the table used to do combined X * 32 bit permutation and e expansion X * X * We use it because we have to permute 16384 32 bit X * longs into 48 bit in order to initialize sb. X * X * Looping 48 rounds per permutation becomes X * just too slow... X * X */ X X clearmem((char*)eperm32tab, sizeof(eperm32tab)); X X for(bit = 0; bit < 48; bit++) { X ufc_long mask1,comes_from; X X comes_from = perm32[esel[bit]-1]-1; X mask1 = bytemask[comes_from % 8]; X X for(j = 256; j--;) { X if(j & mask1) X eperm32tab[comes_from / 8][j][bit / 24] |= BITMASK(bit % 24); X } X } X X /* X * Create the sb tables: X * X * For each 12 bit segment of an 48 bit intermediate X * result, the sb table precomputes the two 4 bit X * values of the sbox lookups done with the two 6 X * bit halves, shifts them to their proper place, X * sends them through perm32 and finally E expands X * them so that they are ready for the next X * DES round. X * X */ X for(sg = 0; sg < 4; sg++) { X int j1, j2; X int s1, s2; X X for(j1 = 0; j1 < 64; j1++) { X s1 = s_lookup(2 * sg, j1); X for(j2 = 0; j2 < 64; j2++) { X ufc_long to_permute, inx; X X s2 = s_lookup(2 * sg + 1, j2); X to_permute = ((s1 << 4) | s2) << (24 - 8 * sg); X X#ifdef _UFC_32_ X inx = ((j1 << 6) | j2) << 1; X sb[sg][inx ] = eperm32tab[0][(to_permute >> 24) & 0xff][0]; X sb[sg][inx+1] = eperm32tab[0][(to_permute >> 24) & 0xff][1]; X sb[sg][inx ] |= eperm32tab[1][(to_permute >> 16) & 0xff][0]; X sb[sg][inx+1] |= eperm32tab[1][(to_permute >> 16) & 0xff][1]; X sb[sg][inx ] |= eperm32tab[2][(to_permute >> 8) & 0xff][0]; X sb[sg][inx+1] |= eperm32tab[2][(to_permute >> 8) & 0xff][1]; X sb[sg][inx ] |= eperm32tab[3][(to_permute) & 0xff][0]; X sb[sg][inx+1] |= eperm32tab[3][(to_permute) & 0xff][1]; X#endif X#ifdef _UFC_64_ X inx = ((j1 << 6) | j2); X sb[sg][inx] = X ((long64)eperm32tab[0][(to_permute >> 24) & 0xff][0] << 32) | X (long64)eperm32tab[0][(to_permute >> 24) & 0xff][1]; X sb[sg][inx] |= X ((long64)eperm32tab[1][(to_permute >> 16) & 0xff][0] << 32) | X (long64)eperm32tab[1][(to_permute >> 16) & 0xff][1]; X sb[sg][inx] |= X ((long64)eperm32tab[2][(to_permute >> 8) & 0xff][0] << 32) | X (long64)eperm32tab[2][(to_permute >> 8) & 0xff][1]; X sb[sg][inx] |= X ((long64)eperm32tab[3][(to_permute) & 0xff][0] << 32) | X (long64)eperm32tab[3][(to_permute) & 0xff][1]; X#endif X } X } X } X X /* X * Create an inverse matrix for esel telling X * where to plug out bits if undoing it X */ X for(bit=48; bit--;) { X e_inverse[esel[bit] - 1 ] = bit; X e_inverse[esel[bit] - 1 + 32] = bit + 48; X } X X /* X * create efp: the matrix used to X * undo the E expansion and effect final permutation X */ X clearmem((char*)efp, sizeof efp); X for(bit = 0; bit < 64; bit++) { X int o_bit, o_long; X ufc_long word_value, mask1, mask2; X int comes_from_f_bit, comes_from_e_bit; X int comes_from_word, bit_within_word; X X /* See where bit i belongs in the two 32 bit long's */ X o_long = bit / 32; /* 0..1 */ X o_bit = bit % 32; /* 0..31 */ X X /* X * And find a bit in the e permutated value setting this bit. X * X * Note: the e selection may have selected the same bit several X * times. By the initialization of e_inverse, we only look X * for one specific instance. X */ X comes_from_f_bit = final_perm[bit] - 1; /* 0..63 */ X comes_from_e_bit = e_inverse[comes_from_f_bit]; /* 0..95 */ X comes_from_word = comes_from_e_bit / 6; /* 0..15 */ X bit_within_word = comes_from_e_bit % 6; /* 0..5 */ X X mask1 = longmask[bit_within_word + 26]; X mask2 = longmask[o_bit]; X X for(word_value = 64; word_value--;) { X if(word_value & mask1) X efp[comes_from_word][word_value][o_long] |= mask2; X } X } X initialized++; X } X X/* X * Process the elements of the sb table permuting the X * bits swapped in the expansion by the current salt. X */ X X#ifdef _UFC_32_ XSTATIC void shuffle_sb(k, saltbits) X long32 *k; X ufc_long saltbits; X { ufc_long j; X long32 x; X for(j=4096; j--;) { X x = (k[0] ^ k[1]) & (long32)saltbits; X *k++ ^= x; X *k++ ^= x; X } X } X#endif X X#ifdef _UFC_64_ XSTATIC void shuffle_sb(k, saltbits) X long64 *k; X ufc_long saltbits; X { ufc_long j; X long64 x; X for(j=4096; j--;) { X x = ((*k >> 32) ^ *k) & (long64)saltbits; X *k++ ^= (x << 32) | x; X } X } X#endif X X/* X * Setup the unit for a new salt X * Hopefully we'll not see a new salt in each crypt call. X */ X Xstatic unsigned char current_salt[3] = "&&"; /* invalid value */ Xstatic ufc_long current_saltbits = 0; Xstatic int direction = 0; X XSTATIC void setup_salt(s) X char *s; X { ufc_long i, j, saltbits; X X if(!initialized) X init_des(); X X if(s[0] == current_salt[0] && s[1] == current_salt[1]) X return; X current_salt[0] = s[0]; current_salt[1] = s[1]; X X /* X * This is the only crypt change to DES: X * entries are swapped in the expansion table X * according to the bits set in the salt. X */ X saltbits = 0; X for(i = 0; i < 2; i++) { X long c=ascii_to_bin(s[i]); X if(c < 0 || c > 63) X c = 0; X for(j = 0; j < 6; j++) { X if((c >> j) & 0x1) X saltbits |= BITMASK(6 * i + j); X } X } X X /* X * Permute the sb table values X * to reflect the changed e X * selection table X */ X shuffle_sb(_ufc_sb0, current_saltbits ^ saltbits); X shuffle_sb(_ufc_sb1, current_saltbits ^ saltbits); X shuffle_sb(_ufc_sb2, current_saltbits ^ saltbits); X shuffle_sb(_ufc_sb3, current_saltbits ^ saltbits); X X current_saltbits = saltbits; X } X XSTATIC void ufc_mk_keytab(key) X char *key; X { ufc_long v1, v2, *k1; X int i; X#ifdef _UFC_32_ X long32 v, *k2 = &_ufc_keytab[0][0]; X#endif X#ifdef _UFC_64_ X long64 v, *k2 = &_ufc_keytab[0]; X#endif X X v1 = v2 = 0; k1 = &do_pc1[0][0][0]; X for(i = 8; i--;) { X v1 |= k1[*key & 0x7f]; k1 += 128; X v2 |= k1[*key++ & 0x7f]; k1 += 128; X } X X for(i = 0; i < 16; i++) { X k1 = &do_pc2[0][0]; X X v1 = (v1 << rots[i]) | (v1 >> (28 - rots[i])); X v = k1[(v1 >> 21) & 0x7f]; k1 += 128; X v |= k1[(v1 >> 14) & 0x7f]; k1 += 128; X v |= k1[(v1 >> 7) & 0x7f]; k1 += 128; X v |= k1[(v1 ) & 0x7f]; k1 += 128; X X#ifdef _UFC_32_ X *k2++ = v; X v = 0; X#endif X#ifdef _UFC_64_ X v <<= 32; X#endif X X v2 = (v2 << rots[i]) | (v2 >> (28 - rots[i])); X v |= k1[(v2 >> 21) & 0x7f]; k1 += 128; X v |= k1[(v2 >> 14) & 0x7f]; k1 += 128; X v |= k1[(v2 >> 7) & 0x7f]; k1 += 128; X v |= k1[(v2 ) & 0x7f]; X X *k2++ = v; X } X X direction = 0; X } X X/* X * Undo an extra E selection and do final permutations X */ X Xufc_long *_ufc_dofinalperm(l1, l2, r1, r2) X ufc_long l1,l2,r1,r2; X { ufc_long v1, v2, x; X static ufc_long ary[2]; X X x = (l1 ^ l2) & current_saltbits; l1 ^= x; l2 ^= x; X x = (r1 ^ r2) & current_saltbits; r1 ^= x; r2 ^= x; X X v1=v2=0; l1 >>= 3; l2 >>= 3; r1 >>= 3; r2 >>= 3; X X v1 |= efp[15][ r2 & 0x3f][0]; v2 |= efp[15][ r2 & 0x3f][1]; X v1 |= efp[14][(r2 >>= 6) & 0x3f][0]; v2 |= efp[14][ r2 & 0x3f][1]; X v1 |= efp[13][(r2 >>= 10) & 0x3f][0]; v2 |= efp[13][ r2 & 0x3f][1]; X v1 |= efp[12][(r2 >>= 6) & 0x3f][0]; v2 |= efp[12][ r2 & 0x3f][1]; X X v1 |= efp[11][ r1 & 0x3f][0]; v2 |= efp[11][ r1 & 0x3f][1]; X v1 |= efp[10][(r1 >>= 6) & 0x3f][0]; v2 |= efp[10][ r1 & 0x3f][1]; X v1 |= efp[ 9][(r1 >>= 10) & 0x3f][0]; v2 |= efp[ 9][ r1 & 0x3f][1]; X v1 |= efp[ 8][(r1 >>= 6) & 0x3f][0]; v2 |= efp[ 8][ r1 & 0x3f][1]; X X v1 |= efp[ 7][ l2 & 0x3f][0]; v2 |= efp[ 7][ l2 & 0x3f][1]; X v1 |= efp[ 6][(l2 >>= 6) & 0x3f][0]; v2 |= efp[ 6][ l2 & 0x3f][1]; X v1 |= efp[ 5][(l2 >>= 10) & 0x3f][0]; v2 |= efp[ 5][ l2 & 0x3f][1]; X v1 |= efp[ 4][(l2 >>= 6) & 0x3f][0]; v2 |= efp[ 4][ l2 & 0x3f][1]; X X v1 |= efp[ 3][ l1 & 0x3f][0]; v2 |= efp[ 3][ l1 & 0x3f][1]; X v1 |= efp[ 2][(l1 >>= 6) & 0x3f][0]; v2 |= efp[ 2][ l1 & 0x3f][1]; X v1 |= efp[ 1][(l1 >>= 10) & 0x3f][0]; v2 |= efp[ 1][ l1 & 0x3f][1]; X v1 |= efp[ 0][(l1 >>= 6) & 0x3f][0]; v2 |= efp[ 0][ l1 & 0x3f][1]; X X ary[0] = v1; ary[1] = v2; X return ary; X } X X/* X * crypt only: convert from 64 bit to 11 bit ASCII X * prefixing with the salt X */ X XSTATIC char *output_conversion(v1, v2, salt) X ufc_long v1, v2; X char *salt; X { static char outbuf[14]; X int i, s; X X outbuf[0] = salt[0]; X outbuf[1] = salt[1] ? salt[1] : salt[0]; X X for(i = 0; i < 5; i++) X outbuf[i + 2] = bin_to_ascii((v1 >> (26 - 6 * i)) & 0x3f); X X s = (v2 & 0xf) << 2; X v2 = (v2 >> 2) | ((v1 & 0x3) << 30); X X for(i = 5; i < 10; i++) X outbuf[i + 2] = bin_to_ascii((v2 >> (56 - 6 * i)) & 0x3f); X X outbuf[12] = bin_to_ascii(s); X outbuf[13] = 0; X X return outbuf; X } X Xufc_long *_ufc_doit(); X X/* X * UNIX crypt function X */ X Xchar *crypt(key, salt) X char *key, *salt; X { ufc_long *s; X char ktab[9]; X X /* X * Hack DES tables according to salt X */ X setup_salt(salt); X X /* X * Setup key schedule X */ X clearmem(ktab, sizeof ktab); X (void)strncpy(ktab, key, 8); X ufc_mk_keytab(ktab); X X /* X * Go for the 25 DES encryptions X */ X s = _ufc_doit((ufc_long)0, (ufc_long)0, X (ufc_long)0, (ufc_long)0, (ufc_long)25); X X /* X * And convert back to 6 bit ASCII X */ X return output_conversion(s[0], s[1], salt); X } X X/* X * To make fcrypt users happy. X * They don't need to call init_des. X */ X Xchar *fcrypt(key, salt) X char *key; X char *salt; X { return crypt(key, salt); X } X X/* X * UNIX encrypt function. Takes a bitvector X * represented by one byte per bit and X * encrypt/decrypt according to edflag X */ X Xvoid encrypt(block, edflag) X char *block; X int edflag; X { ufc_long l1, l2, r1, r2, *s; X int i; X X /* X * Undo any salt changes to E expansion X */ X setup_salt(".."); X X /* X * Reverse key table if X * changing operation (encrypt/decrypt) X */ X if((edflag == 0) != (direction == 0)) { X for(i = 0; i < 8; i++) { X#ifdef _UFC_32_ X long32 x; X x = _ufc_keytab[15-i][0]; X _ufc_keytab[15-i][0] = _ufc_keytab[i][0]; X _ufc_keytab[i][0] = x; X X x = _ufc_keytab[15-i][1]; X _ufc_keytab[15-i][1] = _ufc_keytab[i][1]; X _ufc_keytab[i][1] = x; X#endif X#ifdef _UFC_64_ X long64 x; X x = _ufc_keytab[15-i]; X _ufc_keytab[15-i] = _ufc_keytab[i]; X _ufc_keytab[i] = x; X#endif X } X direction = edflag; X } X X /* X * Do initial permutation + E expansion X */ X i = 0; X for(l1 = 0; i < 24; i++) { X if(block[initial_perm[esel[i]-1]-1]) X l1 |= BITMASK(i); X } X for(l2 = 0; i < 48; i++) { X if(block[initial_perm[esel[i]-1]-1]) X l2 |= BITMASK(i-24); X } X X i = 0; X for(r1 = 0; i < 24; i++) { X if(block[initial_perm[esel[i]-1+32]-1]) X r1 |= BITMASK(i); X } X for(r2 = 0; i < 48; i++) { X if(block[initial_perm[esel[i]-1+32]-1]) X r2 |= BITMASK(i-24); X } X X /* X * Do DES inner loops + final conversion X */ X s = _ufc_doit(l1, l2, r1, r2, (ufc_long)1); X X /* X * And convert to bit array X */ X l1 = s[0]; r1 = s[1]; X for(i = 0; i < 32; i++) { X *block++ = (l1 & longmask[i]) != 0; X } X for(i = 0; i < 32; i++) { X *block++ = (r1 & longmask[i]) != 0; X } X X } X X/* X * UNIX setkey function. Take a 64 bit DES X * key and setup the machinery. X */ X Xvoid setkey(key) X char *key; X { int i,j; X unsigned char c; X unsigned char ktab[8]; X X setup_salt(".."); /* be sure we're initialized */ X X for(i = 0; i < 8; i++) { X for(j = 0, c = 0; j < 8; j++) X c = c << 1 | *key++; X ktab[i] = c >> 1; X } X X ufc_mk_keytab(ktab); X } X X X X X END_OF_FILE if test 22326 -ne `wc -c <'crypt_util.c'`; then echo shar: \"'crypt_util.c'\" unpacked with wrong size! fi # end of 'crypt_util.c' fi echo shar: End of archive 2 \(of 2\). cp /dev/null ark2isdone MISSING="" for I in 1 2 ; do if test ! -f ark${I}isdone ; then MISSING="${MISSING} ${I}" fi done if test "${MISSING}" = "" ; then echo You have unpacked both archives. rm -f ark[1-9]isdone else echo You still need to unpack the following archives: echo " " ${MISSING} fi ## End of shell archive. exit 0 exit 0 # Just in case...  Copyright. Kenichi Mori OpenWall,inc