diff options
Diffstat (limited to 'crypt/sysdeps')
| -rw-r--r-- | crypt/sysdeps/mach/hurd/Implies | 2 | ||||
| -rw-r--r-- | crypt/sysdeps/unix/Makefile | 4 | ||||
| -rw-r--r-- | crypt/sysdeps/unix/crypt-entry.c | 149 | ||||
| -rw-r--r-- | crypt/sysdeps/unix/crypt-private.h | 60 | ||||
| -rw-r--r-- | crypt/sysdeps/unix/crypt.c | 120 | ||||
| -rw-r--r-- | crypt/sysdeps/unix/crypt.h | 71 | ||||
| -rw-r--r-- | crypt/sysdeps/unix/crypt_util.c | 914 | ||||
| -rw-r--r-- | crypt/sysdeps/unix/des_impl.c | 615 | ||||
| -rw-r--r-- | crypt/sysdeps/unix/patchlevel.h | 25 | ||||
| -rw-r--r-- | crypt/sysdeps/unix/ufc-crypt.h | 29 |
10 files changed, 1989 insertions, 0 deletions
diff --git a/crypt/sysdeps/mach/hurd/Implies b/crypt/sysdeps/mach/hurd/Implies new file mode 100644 index 0000000000..03a772586f --- /dev/null +++ b/crypt/sysdeps/mach/hurd/Implies @@ -0,0 +1,2 @@ +# The Hurd uses Unix like DES crypto function. +unix diff --git a/crypt/sysdeps/unix/Makefile b/crypt/sysdeps/unix/Makefile new file mode 100644 index 0000000000..65810482d0 --- /dev/null +++ b/crypt/sysdeps/unix/Makefile @@ -0,0 +1,4 @@ +ifeq ($(subdir),md5-crypt) +libcrypt-routines += crypt crypt_util +dont_distribute += crypt.c crypt_util.c +endif diff --git a/crypt/sysdeps/unix/crypt-entry.c b/crypt/sysdeps/unix/crypt-entry.c new file mode 100644 index 0000000000..9d99c53a2b --- /dev/null +++ b/crypt/sysdeps/unix/crypt-entry.c @@ -0,0 +1,149 @@ +/* + * UFC-crypt: ultra fast crypt(3) implementation + * + * Copyright (C) 1991, 1992, 1993, 1996, 1997 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; see the file COPYING.LIB. If not, + * write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + * + * crypt entry points + * + * @(#)crypt-entry.c 1.2 12/20/96 + * + */ + +#ifdef DEBUG +#include <stdio.h> +#endif +#include <string.h> + +#ifndef STATIC +#define STATIC static +#endif + +#ifndef DOS +#include "ufc-crypt.h" +#else +/* + * Thanks to greg%wind@plains.NoDak.edu (Greg W. Wettstein) + * for DOS patches + */ +#include "ufc.h" +#endif +#include "crypt.h" +#include "crypt-private.h" + +/* Prototypes for local functions. */ +#if __STDC__ - 0 +#ifndef __GNU_LIBRARY__ +void _ufc_clearmem (char *start, int cnt); +#else +#define _ufc_clearmem(start, cnt) memset(start, 0, cnt) +#endif +extern char *__md5_crypt_r (const char *key, const char *salt, char *buffer, + int buflen); +extern char *__md5_crypt (const char *key, const char *salt); +#endif + +/* Define our magic string to mark salt for MD5 encryption + replacement. This is meant to be the same as for other MD5 based + encryption implementations. */ +static const char md5_salt_prefix[] = "$1$"; + +/* For use by the old, non-reentrant routines (crypt/encrypt/setkey) */ +extern struct crypt_data _ufc_foobar; + +/* + * UNIX crypt function + */ + +char * +__crypt_r (key, salt, data) + const char *key; + const char *salt; + struct crypt_data * __restrict data; +{ + ufc_long res[4]; + char ktab[9]; + ufc_long xx = 25; /* to cope with GCC long long compiler bugs */ + +#ifdef _LIBC + /* Try to find out whether we have to use MD5 encryption replacement. */ + if (strncmp (md5_salt_prefix, salt, sizeof (md5_salt_prefix) - 1) == 0) + return __md5_crypt_r (key, salt, (char *) data, + sizeof (struct crypt_data)); +#endif + + /* + * Hack DES tables according to salt + */ + _ufc_setup_salt_r (salt, data); + + /* + * Setup key schedule + */ + _ufc_clearmem (ktab, (int) sizeof (ktab)); + (void) strncpy (ktab, key, 8); + _ufc_mk_keytab_r (ktab, data); + + /* + * Go for the 25 DES encryptions + */ + _ufc_clearmem ((char*) res, (int) sizeof (res)); + _ufc_doit_r (xx, data, &res[0]); + + /* + * Do final permutations + */ + _ufc_dofinalperm_r (res, data); + + /* + * And convert back to 6 bit ASCII + */ + _ufc_output_conversion_r (res[0], res[1], salt, data); + return data->crypt_3_buf; +} +weak_alias (__crypt_r, crypt_r) + +char * +crypt (key, salt) + const char *key; + const char *salt; +{ +#ifdef _LIBC + /* Try to find out whether we have to use MD5 encryption replacement. */ + if (strncmp (md5_salt_prefix, salt, sizeof (md5_salt_prefix) - 1) == 0) + return __md5_crypt (key, salt); +#endif + + return __crypt_r (key, salt, &_ufc_foobar); +} + + +/* + * To make fcrypt users happy. + * They don't need to call init_des. + */ +#ifdef _LIBC +weak_alias (crypt, fcrypt) +#else +char * +__fcrypt (key, salt) + const char *key; + const char *salt; +{ + return crypt (key, salt); +} +#endif diff --git a/crypt/sysdeps/unix/crypt-private.h b/crypt/sysdeps/unix/crypt-private.h new file mode 100644 index 0000000000..130cccd373 --- /dev/null +++ b/crypt/sysdeps/unix/crypt-private.h @@ -0,0 +1,60 @@ +/* + * UFC-crypt: ultra fast crypt(3) implementation + * + * Copyright (C) 1991, 92, 93, 96, 97, 98 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; see the file COPYING.LIB. If not, + * write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + * + * @(#)crypt-private.h 1.4 12/20/96 + */ + +/* Prototypes for local functions in libcrypt.a. */ + +#ifndef CRYPT_PRIVATE_H +#define CRYPT_PRIVATE_H 1 + +#include <features.h> + +/* crypt.c */ +extern void _ufc_doit_r (ufc_long itr, struct crypt_data * __restrict __data, + ufc_long *res); + + +/* crypt_util.c */ +extern void __init_des_r (struct crypt_data * __restrict __data); +extern void __init_des (void); + +extern void _ufc_setup_salt_r (__const char *s, + struct crypt_data * __restrict __data); +extern void _ufc_mk_keytab_r (__const char *key, + struct crypt_data * __restrict __data); +extern void _ufc_dofinalperm_r (ufc_long *res, + struct crypt_data * __restrict __data); +extern void _ufc_output_conversion_r (ufc_long v1, ufc_long v2, + __const char *salt, + struct crypt_data * __restrict __data); + +extern void __setkey_r (__const char *__key, + struct crypt_data * __restrict __data); +extern void __encrypt_r (char * __restrict __block, int __edflag, + struct crypt_data * __restrict __data); + +/* crypt-entry.c */ +extern char *__crypt_r (__const char *__key, __const char *__salt, + struct crypt_data * __restrict __data); +extern char *fcrypt (__const char *key, __const char *salt); + +#endif /* crypt-private.h */ diff --git a/crypt/sysdeps/unix/crypt.c b/crypt/sysdeps/unix/crypt.c new file mode 100644 index 0000000000..8e2a576a70 --- /dev/null +++ b/crypt/sysdeps/unix/crypt.c @@ -0,0 +1,120 @@ +/* + * UFC-crypt: ultra fast crypt(3) implementation + * + * Copyright (C) 1991, 1992, 1993, 1996 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; see the file COPYING.LIB. If not, + * write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + * + * @(#)crypt.c 2.25 12/20/96 + * + * Semiportable C version + * + */ + +#include "ufc-crypt.h" +#include "crypt.h" +#include "crypt-private.h" + +#ifdef _UFC_32_ + +/* + * 32 bit version + */ + +#define SBA(sb, v) (*(long32*)((char*)(sb)+(v))) + +void +_ufc_doit_r(itr, __data, res) + ufc_long itr, *res; + struct crypt_data * __restrict __data; +{ + int i; + long32 s, *k; + long32 *sb01 = (long32*)__data->sb0; + long32 *sb23 = (long32*)__data->sb2; + long32 l1, l2, r1, r2; + + l1 = (long32)res[0]; l2 = (long32)res[1]; + r1 = (long32)res[2]; r2 = (long32)res[3]; + + while(itr--) { + k = (long32*)__data->keysched; + for(i=8; i--; ) { + s = *k++ ^ r1; + l1 ^= SBA(sb01, s & 0xffff); l2 ^= SBA(sb01, (s & 0xffff)+4); + l1 ^= SBA(sb01, s >>= 16 ); l2 ^= SBA(sb01, (s )+4); + s = *k++ ^ r2; + l1 ^= SBA(sb23, s & 0xffff); l2 ^= SBA(sb23, (s & 0xffff)+4); + l1 ^= SBA(sb23, s >>= 16 ); l2 ^= SBA(sb23, (s )+4); + + s = *k++ ^ l1; + r1 ^= SBA(sb01, s & 0xffff); r2 ^= SBA(sb01, (s & 0xffff)+4); + r1 ^= SBA(sb01, s >>= 16 ); r2 ^= SBA(sb01, (s )+4); + s = *k++ ^ l2; + r1 ^= SBA(sb23, s & 0xffff); r2 ^= SBA(sb23, (s & 0xffff)+4); + r1 ^= SBA(sb23, s >>= 16 ); r2 ^= SBA(sb23, (s )+4); + } + s=l1; l1=r1; r1=s; s=l2; l2=r2; r2=s; + } + res[0] = l1; res[1] = l2; res[2] = r1; res[3] = r2; +} + +#endif + +#ifdef _UFC_64_ + +/* + * 64 bit version + */ + +#define SBA(sb, v) (*(long64*)((char*)(sb)+(v))) + +void +_ufc_doit_r(itr, __data, res) + ufc_long itr, *res; + struct crypt_data * __restrict __data; +{ + int i; + long64 l, r, s, *k; + register long64 *sb01 = (long64*)__data->sb0; + register long64 *sb23 = (long64*)__data->sb2; + + l = (((long64)res[0]) << 32) | ((long64)res[1]); + r = (((long64)res[2]) << 32) | ((long64)res[3]); + + while(itr--) { + k = (long64*)__data->keysched; + for(i=8; i--; ) { + s = *k++ ^ r; + l ^= SBA(sb23, (s ) & 0xffff); + l ^= SBA(sb23, (s >>= 16) & 0xffff); + l ^= SBA(sb01, (s >>= 16) & 0xffff); + l ^= SBA(sb01, (s >>= 16) ); + + s = *k++ ^ l; + r ^= SBA(sb23, (s ) & 0xffff); + r ^= SBA(sb23, (s >>= 16) & 0xffff); + r ^= SBA(sb01, (s >>= 16) & 0xffff); + r ^= SBA(sb01, (s >>= 16) ); + } + s=l; l=r; r=s; + } + + res[0] = l >> 32; res[1] = l & 0xffffffff; + res[2] = r >> 32; res[3] = r & 0xffffffff; +} + +#endif diff --git a/crypt/sysdeps/unix/crypt.h b/crypt/sysdeps/unix/crypt.h new file mode 100644 index 0000000000..13191e6f33 --- /dev/null +++ b/crypt/sysdeps/unix/crypt.h @@ -0,0 +1,71 @@ +/* + * UFC-crypt: ultra fast crypt(3) implementation + * + * Copyright (C) 1991, 92, 93, 96, 97, 98 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 the GNU C Library; see the file COPYING.LIB. If not, + * write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + * + * @(#)crypt.h 1.5 12/20/96 + * + */ + +#ifndef _CRYPT_H +#define _CRYPT_H 1 + +#include <features.h> + +__BEGIN_DECLS + +/* Encrypt at most 8 characters from KEY using salt to perturb DES. */ +extern char *crypt __P ((__const char *__key, __const char *__salt)); + +/* Setup DES tables according KEY. */ +extern void setkey __P ((__const char *__key)); + +/* Encrypt data in BLOCK in place if EDFLAG is zero; otherwise decrypt + block in place. */ +extern void encrypt __P ((char *__block, int __edflag)); + +#ifdef __USE_GNU +/* Reentrant versions of the functions above. The additional argument + points to a structure where the results are placed in. */ +struct crypt_data + { + char keysched[16 * 8]; + char sb0[32768]; + char sb1[32768]; + char sb2[32768]; + char sb3[32768]; + /* end-of-aligment-critical-data */ + char crypt_3_buf[14]; + char current_salt[2]; + long int current_saltbits; + int direction, initialized; + }; + +extern char *crypt_r __P ((__const char *__key, __const char *__salt, + struct crypt_data * __restrict __data)); + +extern void setkey_r __P ((__const char *__key, + struct crypt_data * __restrict __data)); + +extern void encrypt_r __P ((char *__block, int __edflag, + struct crypt_data * __restrict __data)); +#endif + +__END_DECLS + +#endif /* crypt.h */ diff --git a/crypt/sysdeps/unix/crypt_util.c b/crypt/sysdeps/unix/crypt_util.c new file mode 100644 index 0000000000..671571c51d --- /dev/null +++ b/crypt/sysdeps/unix/crypt_util.c @@ -0,0 +1,914 @@ +/* + * UFC-crypt: ultra fast crypt(3) implementation + * + * Copyright (C) 1991, 92, 93, 96, 97, 98 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; see the file COPYING.LIB. If not, + * write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + * + * @(#)crypt_util.c 2.56 12/20/96 + * + * Support routines + * + */ + +#ifdef DEBUG +#include <stdio.h> +#endif +#include <string.h> + +#ifndef STATIC +#define STATIC static +#endif + +#ifndef DOS +#include "patchlevel.h" +#include "ufc-crypt.h" +#else +/* + * Thanks to greg%wind@plains.NoDak.edu (Greg W. Wettstein) + * for DOS patches + */ +#include "pl.h" +#include "ufc.h" +#endif +#include "crypt.h" +#include "crypt-private.h" + +/* Prototypes for local functions. */ +#if __STDC__ - 0 +#ifndef __GNU_LIBRARY__ +void _ufc_clearmem (char *start, int cnt); +void _ufc_copymem (char *from, char *to, int cnt); +#endif +#ifdef _UFC_32_ +STATIC void shuffle_sb (long32 *k, ufc_long saltbits); +#else +STATIC void shuffle_sb (long64 *k, ufc_long saltbits); +#endif +#endif + + +static const char patchlevel_str[] = PATCHLEVEL; + +/* + * Permutation done once on the 56 bit + * key derived from the original 8 byte ASCII key. + */ +static const 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 const 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 const 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 const 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 +}; + +/* + * Permutation done on the + * result of sbox lookups + */ +static const 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 const 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 initial + * permutation matrix + */ +static const int initial_perm[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 +}; + +/* + * This is the final + * permutation matrix + */ +static const 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 +}; + +#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)+'.') + +static const ufc_long BITMASK[24] = { + 0x40000000, 0x20000000, 0x10000000, 0x08000000, 0x04000000, 0x02000000, + 0x01000000, 0x00800000, 0x00400000, 0x00200000, 0x00100000, 0x00080000, + 0x00004000, 0x00002000, 0x00001000, 0x00000800, 0x00000400, 0x00000200, + 0x00000100, 0x00000080, 0x00000040, 0x00000020, 0x00000010, 0x00000008 +}; + +static const unsigned char bytemask[8] = { + 0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01 +}; + +static const 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 +}; + +/* + * 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]; + +/* + * 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]; + +/* + * 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]; + +/* + * For use by the old, non-reentrant routines + * (crypt/encrypt/setkey) + */ +struct crypt_data _ufc_foobar; + +#ifdef __GNU_LIBRARY__ +#include <bits/libc-lock.h> + +__libc_lock_define_initialized (static, _ufc_tables_lock) +#endif + +#ifdef DEBUG + +void +_ufc_prbits(a, n) + ufc_long *a; + int n; +{ + ufc_long i, j, t, tmp; + n /= 8; + for(i = 0; i < n; i++) { + tmp=0; + for(j = 0; j < 8; j++) { + t=8*i+j; + tmp|=(a[t/24] & BITMASK[t % 24])?bytemask[j]:0; + } + (void)printf("%02x ",tmp); + } + printf(" "); +} + +static void +_ufc_set_bits(v, b) + ufc_long v; + ufc_long *b; +{ + ufc_long i; + *b = 0; + for(i = 0; i < 24; i++) { + if(v & longmask[8 + i]) + *b |= BITMASK[i]; + } +} + +#endif + +#ifndef __GNU_LIBRARY__ +/* + * Silly rewrites of 'bzero'/'memset'. I do so + * because some machines don't have + * bzero and some don't have memset. + */ + +void +_ufc_clearmem(start, cnt) + char *start; + int cnt; +{ + while(cnt--) + *start++ = '\0'; +} + +void +_ufc_copymem(from, to, cnt) + char *from, *to; + int cnt; +{ + while(cnt--) + *to++ = *from++; +} +#else +#define _ufc_clearmem(start, cnt) memset(start, 0, cnt) +#define _ufc_copymem(from, to, cnt) memcpy(to, from, cnt) +#endif + +/* 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. + */ + +void +__init_des_r(__data) + struct crypt_data * __restrict __data; +{ + int comes_from_bit; + int bit, sg; + ufc_long j; + ufc_long mask1, mask2; + int e_inverse[64]; + static volatile int small_tables_initialized = 0; + +#ifdef _UFC_32_ + long32 *sb[4]; + sb[0] = (long32*)__data->sb0; sb[1] = (long32*)__data->sb1; + sb[2] = (long32*)__data->sb2; sb[3] = (long32*)__data->sb3; +#endif +#ifdef _UFC_64_ + long64 *sb[4]; + sb[0] = (long64*)__data->sb0; sb[1] = (long64*)__data->sb1; + sb[2] = (long64*)__data->sb2; sb[3] = (long64*)__data->sb3; +#endif + + if(small_tables_initialized == 0) { +#ifdef __GNU_LIBRARY__ + __libc_lock_lock (_ufc_tables_lock); + if(small_tables_initialized) + goto small_tables_done; +#endif + + /* + * Create the do_pc1 table used + * to affect pc1 permutation + * when generating keys + */ + _ufc_clearmem((char*)do_pc1, (int)sizeof(do_pc1)); + 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 + */ + _ufc_clearmem((char*)do_pc2, (int)sizeof(do_pc2)); + 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... + * + */ + + _ufc_clearmem((char*)eperm32tab, (int)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 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 + */ + _ufc_clearmem((char*)efp, (int)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; + } + } + small_tables_initialized = 1; +#ifdef __GNU_LIBRARY__ +small_tables_done: + __libc_lock_unlock(_ufc_tables_lock); +#endif + } + + /* + * 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. + * + */ + + _ufc_clearmem((char*)__data->sb0, (int)sizeof(__data->sb0)); + _ufc_clearmem((char*)__data->sb1, (int)sizeof(__data->sb1)); + _ufc_clearmem((char*)__data->sb2, (int)sizeof(__data->sb2)); + _ufc_clearmem((char*)__data->sb3, (int)sizeof(__data->sb3)); + + 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 = (((ufc_long)s1 << 4) | + (ufc_long)s2) << (24 - 8 * (ufc_long)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 + } + } + } + + __data->initialized++; +} + +void +__init_des() +{ + __init_des_r(&_ufc_foobar); +} + +/* + * 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. + */ + +void +_ufc_setup_salt_r(s, __data) + __const char *s; + struct crypt_data * __restrict __data; +{ + ufc_long i, j, saltbits; + + if(__data->initialized == 0) + __init_des_r(__data); + + if(s[0] == __data->current_salt[0] && s[1] == __data->current_salt[1]) + return; + __data->current_salt[0] = s[0]; __data->current_salt[1] = s[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(s[i]); + 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 + */ +#ifdef _UFC_32_ +#define LONGG long32* +#endif +#ifdef _UFC_64_ +#define LONGG long64* +#endif + + shuffle_sb((LONGG)__data->sb0, __data->current_saltbits ^ saltbits); + shuffle_sb((LONGG)__data->sb1, __data->current_saltbits ^ saltbits); + shuffle_sb((LONGG)__data->sb2, __data->current_saltbits ^ saltbits); + shuffle_sb((LONGG)__data->sb3, __data->current_saltbits ^ saltbits); + + __data->current_saltbits = saltbits; +} + +void +_ufc_mk_keytab_r(key, __data) + const char *key; + struct crypt_data * __restrict __data; +{ + ufc_long v1, v2, *k1; + int i; +#ifdef _UFC_32_ + long32 v, *k2; + k2 = (long32*)__data->keysched; +#endif +#ifdef _UFC_64_ + long64 v, *k2; + k2 = (long64*)__data->keysched; +#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 | 0x00008000); + v = 0; +#endif +#ifdef _UFC_64_ + v = (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]; + +#ifdef _UFC_32_ + *k2++ = (v | 0x00008000); +#endif +#ifdef _UFC_64_ + *k2++ = v | 0x0000800000008000l; +#endif + } + + __data->direction = 0; +} + +/* + * Undo an extra E selection and do final permutations + */ + +void +_ufc_dofinalperm_r(res, __data) + ufc_long *res; + struct crypt_data * __restrict __data; +{ + ufc_long v1, v2, x; + ufc_long l1,l2,r1,r2; + + l1 = res[0]; l2 = res[1]; + r1 = res[2]; r2 = res[3]; + + x = (l1 ^ l2) & __data->current_saltbits; l1 ^= x; l2 ^= x; + x = (r1 ^ r2) & __data->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]; + + res[0] = v1; res[1] = v2; +} + +/* + * crypt only: convert from 64 bit to 11 bit ASCII + * prefixing with the salt + */ + +void +_ufc_output_conversion_r(v1, v2, salt, __data) + ufc_long v1, v2; + __const char *salt; + struct crypt_data * __restrict __data; +{ + int i, s, shf; + + __data->crypt_3_buf[0] = salt[0]; + __data->crypt_3_buf[1] = salt[1] ? salt[1] : salt[0]; + + for(i = 0; i < 5; i++) { + shf = (26 - 6 * i); /* to cope with MSC compiler bug */ + __data->crypt_3_buf[i + 2] = bin_to_ascii((v1 >> shf) & 0x3f); + } + + s = (v2 & 0xf) << 2; + v2 = (v2 >> 2) | ((v1 & 0x3) << 30); + + for(i = 5; i < 10; i++) { + shf = (56 - 6 * i); + __data->crypt_3_buf[i + 2] = bin_to_ascii((v2 >> shf) & 0x3f); + } + + __data->crypt_3_buf[12] = bin_to_ascii(s); + __data->crypt_3_buf[13] = 0; +} + + +/* + * UNIX encrypt function. Takes a bitvector + * represented by one byte per bit and + * encrypt/decrypt according to edflag + */ + +void +__encrypt_r(__block, __edflag, __data) + char *__block; + int __edflag; + struct crypt_data * __restrict __data; +{ + ufc_long l1, l2, r1, r2, res[4]; + int i; +#ifdef _UFC_32_ + long32 *kt; + kt = (long32*)__data->keysched; +#endif +#ifdef _UFC_64_ + long64 *kt; + kt = (long64*)__data->keysched; +#endif + + /* + * Undo any salt changes to E expansion + */ + _ufc_setup_salt_r("..", __data); + + /* + * Reverse key table if + * changing operation (encrypt/decrypt) + */ + if((__edflag == 0) != (__data->direction == 0)) { + for(i = 0; i < 8; i++) { +#ifdef _UFC_32_ + long32 x; + x = kt[2 * (15-i)]; + kt[2 * (15-i)] = kt[2 * i]; + kt[2 * i] = x; + + x = kt[2 * (15-i) + 1]; + kt[2 * (15-i) + 1] = kt[2 * i + 1]; + kt[2 * i + 1] = x; +#endif +#ifdef _UFC_64_ + long64 x; + x = kt[15-i]; + kt[15-i] = kt[i]; + kt[i] = x; +#endif + } + __data->direction = __edflag; + } + + /* + * Do initial permutation + E expansion + */ + i = 0; + for(l1 = 0; i < 24; i++) { + if(__block[initial_perm[esel[i]-1]-1]) + l1 |= BITMASK[i]; + } + for(l2 = 0; i < 48; i++) { + if(__block[initial_perm[esel[i]-1]-1]) + l2 |= BITMASK[i-24]; + } + + i = 0; + for(r1 = 0; i < 24; i++) { + if(__block[initial_perm[esel[i]-1+32]-1]) + r1 |= BITMASK[i]; + } + for(r2 = 0; i < 48; i++) { + if(__block[initial_perm[esel[i]-1+32]-1]) + r2 |= BITMASK[i-24]; + } + + /* + * Do DES inner loops + final conversion + */ + res[0] = l1; res[1] = l2; + res[2] = r1; res[3] = r2; + _ufc_doit_r((ufc_long)1, __data, &res[0]); + + /* + * Do final permutations + */ + _ufc_dofinalperm_r(res, __data); + + /* + * And convert to bit array + */ + l1 = res[0]; r1 = res[1]; + for(i = 0; i < 32; i++) { + *__block++ = (l1 & longmask[i]) != 0; + } + for(i = 0; i < 32; i++) { + *__block++ = (r1 & longmask[i]) != 0; + } +} +weak_alias (__encrypt_r, encrypt_r) + +void +encrypt(__block, __edflag) + char *__block; + int __edflag; +{ + __encrypt_r(__block, __edflag, &_ufc_foobar); +} + + +/* + * UNIX setkey function. Take a 64 bit DES + * key and setup the machinery. + */ + +void +__setkey_r(__key, __data) + __const char *__key; + struct crypt_data * __restrict __data; +{ + int i,j; + unsigned char c; + unsigned char ktab[8]; + + _ufc_setup_salt_r("..", __data); /* be sure we're initialized */ + + for(i = 0; i < 8; i++) { + for(j = 0, c = 0; j < 8; j++) + c = c << 1 | *__key++; + ktab[i] = c >> 1; + } + _ufc_mk_keytab_r(ktab, __data); +} +weak_alias (__setkey_r, setkey_r) + +void +setkey(__key) + __const char *__key; +{ + __setkey_r(__key, &_ufc_foobar); +} diff --git a/crypt/sysdeps/unix/des_impl.c b/crypt/sysdeps/unix/des_impl.c new file mode 100644 index 0000000000..f4fee720a1 --- /dev/null +++ b/crypt/sysdeps/unix/des_impl.c @@ -0,0 +1,615 @@ +/* Copyright (C) 1992 Eric Young - see COPYING for more details */ +/* Collected from libdes and modified for SECURE RPC by Martin Kuck 1994 */ +#include <string.h> +#include "des.h" + + +static const unsigned long des_SPtrans[8][64] = +{ + { /* nibble 0 */ + 0x00820200, 0x00020000, 0x80800000, 0x80820200, + 0x00800000, 0x80020200, 0x80020000, 0x80800000, + 0x80020200, 0x00820200, 0x00820000, 0x80000200, + 0x80800200, 0x00800000, 0x00000000, 0x80020000, + 0x00020000, 0x80000000, 0x00800200, 0x00020200, + 0x80820200, 0x00820000, 0x80000200, 0x00800200, + 0x80000000, 0x00000200, 0x00020200, 0x80820000, + 0x00000200, 0x80800200, 0x80820000, 0x00000000, + 0x00000000, 0x80820200, 0x00800200, 0x80020000, + 0x00820200, 0x00020000, 0x80000200, 0x00800200, + 0x80820000, 0x00000200, 0x00020200, 0x80800000, + 0x80020200, 0x80000000, 0x80800000, 0x00820000, + 0x80820200, 0x00020200, 0x00820000, 0x80800200, + 0x00800000, 0x80000200, 0x80020000, 0x00000000, + 0x00020000, 0x00800000, 0x80800200, 0x00820200, + 0x80000000, 0x80820000, 0x00000200, 0x80020200}, + + { /* nibble 1 */ + 0x10042004, 0x00000000, 0x00042000, 0x10040000, + 0x10000004, 0x00002004, 0x10002000, 0x00042000, + 0x00002000, 0x10040004, 0x00000004, 0x10002000, + 0x00040004, 0x10042000, 0x10040000, 0x00000004, + 0x00040000, 0x10002004, 0x10040004, 0x00002000, + 0x00042004, 0x10000000, 0x00000000, 0x00040004, + 0x10002004, 0x00042004, 0x10042000, 0x10000004, + 0x10000000, 0x00040000, 0x00002004, 0x10042004, + 0x00040004, 0x10042000, 0x10002000, 0x00042004, + 0x10042004, 0x00040004, 0x10000004, 0x00000000, + 0x10000000, 0x00002004, 0x00040000, 0x10040004, + 0x00002000, 0x10000000, 0x00042004, 0x10002004, + 0x10042000, 0x00002000, 0x00000000, 0x10000004, + 0x00000004, 0x10042004, 0x00042000, 0x10040000, + 0x10040004, 0x00040000, 0x00002004, 0x10002000, + 0x10002004, 0x00000004, 0x10040000, 0x00042000}, + + { /* nibble 2 */ + 0x41000000, 0x01010040, 0x00000040, 0x41000040, + 0x40010000, 0x01000000, 0x41000040, 0x00010040, + 0x01000040, 0x00010000, 0x01010000, 0x40000000, + 0x41010040, 0x40000040, 0x40000000, 0x41010000, + 0x00000000, 0x40010000, 0x01010040, 0x00000040, + 0x40000040, 0x41010040, 0x00010000, 0x41000000, + 0x41010000, 0x01000040, 0x40010040, 0x01010000, + 0x00010040, 0x00000000, 0x01000000, 0x40010040, + 0x01010040, 0x00000040, 0x40000000, 0x00010000, + 0x40000040, 0x40010000, 0x01010000, 0x41000040, + 0x00000000, 0x01010040, 0x00010040, 0x41010000, + 0x40010000, 0x01000000, 0x41010040, 0x40000000, + 0x40010040, 0x41000000, 0x01000000, 0x41010040, + 0x00010000, 0x01000040, 0x41000040, 0x00010040, + 0x01000040, 0x00000000, 0x41010000, 0x40000040, + 0x41000000, 0x40010040, 0x00000040, 0x01010000}, + + { /* nibble 3 */ + 0x00100402, 0x04000400, 0x00000002, 0x04100402, + 0x00000000, 0x04100000, 0x04000402, 0x00100002, + 0x04100400, 0x04000002, 0x04000000, 0x00000402, + 0x04000002, 0x00100402, 0x00100000, 0x04000000, + 0x04100002, 0x00100400, 0x00000400, 0x00000002, + 0x00100400, 0x04000402, 0x04100000, 0x00000400, + 0x00000402, 0x00000000, 0x00100002, 0x04100400, + 0x04000400, 0x04100002, 0x04100402, 0x00100000, + 0x04100002, 0x00000402, 0x00100000, 0x04000002, + 0x00100400, 0x04000400, 0x00000002, 0x04100000, + 0x04000402, 0x00000000, 0x00000400, 0x00100002, + 0x00000000, 0x04100002, 0x04100400, 0x00000400, + 0x04000000, 0x04100402, 0x00100402, 0x00100000, + 0x04100402, 0x00000002, 0x04000400, 0x00100402, + 0x00100002, 0x00100400, 0x04100000, 0x04000402, + 0x00000402, 0x04000000, 0x04000002, 0x04100400}, + + { /* nibble 4 */ + 0x02000000, 0x00004000, 0x00000100, 0x02004108, + 0x02004008, 0x02000100, 0x00004108, 0x02004000, + 0x00004000, 0x00000008, 0x02000008, 0x00004100, + 0x02000108, 0x02004008, 0x02004100, 0x00000000, + 0x00004100, 0x02000000, 0x00004008, 0x00000108, + 0x02000100, 0x00004108, 0x00000000, 0x02000008, + 0x00000008, 0x02000108, 0x02004108, 0x00004008, + 0x02004000, 0x00000100, 0x00000108, 0x02004100, + 0x02004100, 0x02000108, 0x00004008, 0x02004000, + 0x00004000, 0x00000008, 0x02000008, 0x02000100, + 0x02000000, 0x00004100, 0x02004108, 0x00000000, + 0x00004108, 0x02000000, 0x00000100, 0x00004008, + 0x02000108, 0x00000100, 0x00000000, 0x02004108, + 0x02004008, 0x02004100, 0x00000108, 0x00004000, + 0x00004100, 0x02004008, 0x02000100, 0x00000108, + 0x00000008, 0x00004108, 0x02004000, 0x02000008}, + + { /* nibble 5 */ + 0x20000010, 0x00080010, 0x00000000, 0x20080800, + 0x00080010, 0x00000800, 0x20000810, 0x00080000, + 0x00000810, 0x20080810, 0x00080800, 0x20000000, + 0x20000800, 0x20000010, 0x20080000, 0x00080810, + 0x00080000, 0x20000810, 0x20080010, 0x00000000, + 0x00000800, 0x00000010, 0x20080800, 0x20080010, + 0x20080810, 0x20080000, 0x20000000, 0x00000810, + 0x00000010, 0x00080800, 0x00080810, 0x20000800, + 0x00000810, 0x20000000, 0x20000800, 0x00080810, + 0x20080800, 0x00080010, 0x00000000, 0x20000800, + 0x20000000, 0x00000800, 0x20080010, 0x00080000, + 0x00080010, 0x20080810, 0x00080800, 0x00000010, + 0x20080810, 0x00080800, 0x00080000, 0x20000810, + 0x20000010, 0x20080000, 0x00080810, 0x00000000, + 0x00000800, 0x20000010, 0x20000810, 0x20080800, + 0x20080000, 0x00000810, 0x00000010, 0x20080010}, + + { /* nibble 6 */ + 0x00001000, 0x00000080, 0x00400080, 0x00400001, + 0x00401081, 0x00001001, 0x00001080, 0x00000000, + 0x00400000, 0x00400081, 0x00000081, 0x00401000, + 0x00000001, 0x00401080, 0x00401000, 0x00000081, + 0x00400081, 0x00001000, 0x00001001, 0x00401081, + 0x00000000, 0x00400080, 0x00400001, 0x00001080, + 0x00401001, 0x00001081, 0x00401080, 0x00000001, + 0x00001081, 0x00401001, 0x00000080, 0x00400000, + 0x00001081, 0x00401000, 0x00401001, 0x00000081, + 0x00001000, 0x00000080, 0x00400000, 0x00401001, + 0x00400081, 0x00001081, 0x00001080, 0x00000000, + 0x00000080, 0x00400001, 0x00000001, 0x00400080, + 0x00000000, 0x00400081, 0x00400080, 0x00001080, + 0x00000081, 0x00001000, 0x00401081, 0x00400000, + 0x00401080, 0x00000001, 0x00001001, 0x00401081, + 0x00400001, 0x00401080, 0x00401000, 0x00001001}, + + { /* nibble 7 */ + 0x08200020, 0x08208000, 0x00008020, 0x00000000, + 0x08008000, 0x00200020, 0x08200000, 0x08208020, + 0x00000020, 0x08000000, 0x00208000, 0x00008020, + 0x00208020, 0x08008020, 0x08000020, 0x08200000, + 0x00008000, 0x00208020, 0x00200020, 0x08008000, + 0x08208020, 0x08000020, 0x00000000, 0x00208000, + 0x08000000, 0x00200000, 0x08008020, 0x08200020, + 0x00200000, 0x00008000, 0x08208000, 0x00000020, + 0x00200000, 0x00008000, 0x08000020, 0x08208020, + 0x00008020, 0x08000000, 0x00000000, 0x00208000, + 0x08200020, 0x08008020, 0x08008000, 0x00200020, + 0x08208000, 0x00000020, 0x00200020, 0x08008000, + 0x08208020, 0x00200000, 0x08200000, 0x08000020, + 0x00208000, 0x00008020, 0x08008020, 0x08200000, + 0x00000020, 0x08208000, 0x00208020, 0x00000000, + 0x08000000, 0x08200020, 0x00008000, 0x00208020}}; + +static const unsigned long des_skb[8][64] = +{ + { /* for C bits (numbered as per FIPS 46) 1 2 3 4 5 6 */ + 0x00000000, 0x00000010, 0x20000000, 0x20000010, + 0x00010000, 0x00010010, 0x20010000, 0x20010010, + 0x00000800, 0x00000810, 0x20000800, 0x20000810, + 0x00010800, 0x00010810, 0x20010800, 0x20010810, + 0x00000020, 0x00000030, 0x20000020, 0x20000030, + 0x00010020, 0x00010030, 0x20010020, 0x20010030, + 0x00000820, 0x00000830, 0x20000820, 0x20000830, + 0x00010820, 0x00010830, 0x20010820, 0x20010830, + 0x00080000, 0x00080010, 0x20080000, 0x20080010, + 0x00090000, 0x00090010, 0x20090000, 0x20090010, + 0x00080800, 0x00080810, 0x20080800, 0x20080810, + 0x00090800, 0x00090810, 0x20090800, 0x20090810, + 0x00080020, 0x00080030, 0x20080020, 0x20080030, + 0x00090020, 0x00090030, 0x20090020, 0x20090030, + 0x00080820, 0x00080830, 0x20080820, 0x20080830, + 0x00090820, 0x00090830, 0x20090820, 0x20090830}, + { /* for C bits (numbered as per FIPS 46) 7 8 10 11 12 13 */ + 0x00000000, 0x02000000, 0x00002000, 0x02002000, + 0x00200000, 0x02200000, 0x00202000, 0x02202000, + 0x00000004, 0x02000004, 0x00002004, 0x02002004, + 0x00200004, 0x02200004, 0x00202004, 0x02202004, + 0x00000400, 0x02000400, 0x00002400, 0x02002400, + 0x00200400, 0x02200400, 0x00202400, 0x02202400, + 0x00000404, 0x02000404, 0x00002404, 0x02002404, + 0x00200404, 0x02200404, 0x00202404, 0x02202404, + 0x10000000, 0x12000000, 0x10002000, 0x12002000, + 0x10200000, 0x12200000, 0x10202000, 0x12202000, + 0x10000004, 0x12000004, 0x10002004, 0x12002004, + 0x10200004, 0x12200004, 0x10202004, 0x12202004, + 0x10000400, 0x12000400, 0x10002400, 0x12002400, + 0x10200400, 0x12200400, 0x10202400, 0x12202400, + 0x10000404, 0x12000404, 0x10002404, 0x12002404, + 0x10200404, 0x12200404, 0x10202404, 0x12202404}, + { /* for C bits (numbered as per FIPS 46) 14 15 16 17 19 20 */ + 0x00000000, 0x00000001, 0x00040000, 0x00040001, + 0x01000000, 0x01000001, 0x01040000, 0x01040001, + 0x00000002, 0x00000003, 0x00040002, 0x00040003, + 0x01000002, 0x01000003, 0x01040002, 0x01040003, + 0x00000200, 0x00000201, 0x00040200, 0x00040201, + 0x01000200, 0x01000201, 0x01040200, 0x01040201, + 0x00000202, 0x00000203, 0x00040202, 0x00040203, + 0x01000202, 0x01000203, 0x01040202, 0x01040203, + 0x08000000, 0x08000001, 0x08040000, 0x08040001, + 0x09000000, 0x09000001, 0x09040000, 0x09040001, + 0x08000002, 0x08000003, 0x08040002, 0x08040003, + 0x09000002, 0x09000003, 0x09040002, 0x09040003, + 0x08000200, 0x08000201, 0x08040200, 0x08040201, + 0x09000200, 0x09000201, 0x09040200, 0x09040201, + 0x08000202, 0x08000203, 0x08040202, 0x08040203, + 0x09000202, 0x09000203, 0x09040202, 0x09040203}, + { /* for C bits (numbered as per FIPS 46) 21 23 24 26 27 28 */ + 0x00000000, 0x00100000, 0x00000100, 0x00100100, + 0x00000008, 0x00100008, 0x00000108, 0x00100108, + 0x00001000, 0x00101000, 0x00001100, 0x00101100, + 0x00001008, 0x00101008, 0x00001108, 0x00101108, + 0x04000000, 0x04100000, 0x04000100, 0x04100100, + 0x04000008, 0x04100008, 0x04000108, 0x04100108, + 0x04001000, 0x04101000, 0x04001100, 0x04101100, + 0x04001008, 0x04101008, 0x04001108, 0x04101108, + 0x00020000, 0x00120000, 0x00020100, 0x00120100, + 0x00020008, 0x00120008, 0x00020108, 0x00120108, + 0x00021000, 0x00121000, 0x00021100, 0x00121100, + 0x00021008, 0x00121008, 0x00021108, 0x00121108, + 0x04020000, 0x04120000, 0x04020100, 0x04120100, + 0x04020008, 0x04120008, 0x04020108, 0x04120108, + 0x04021000, 0x04121000, 0x04021100, 0x04121100, + 0x04021008, 0x04121008, 0x04021108, 0x04121108}, + { /* for D bits (numbered as per FIPS 46) 1 2 3 4 5 6 */ + 0x00000000, 0x10000000, 0x00010000, 0x10010000, + 0x00000004, 0x10000004, 0x00010004, 0x10010004, + 0x20000000, 0x30000000, 0x20010000, 0x30010000, + 0x20000004, 0x30000004, 0x20010004, 0x30010004, + 0x00100000, 0x10100000, 0x00110000, 0x10110000, + 0x00100004, 0x10100004, 0x00110004, 0x10110004, + 0x20100000, 0x30100000, 0x20110000, 0x30110000, + 0x20100004, 0x30100004, 0x20110004, 0x30110004, + 0x00001000, 0x10001000, 0x00011000, 0x10011000, + 0x00001004, 0x10001004, 0x00011004, 0x10011004, + 0x20001000, 0x30001000, 0x20011000, 0x30011000, + 0x20001004, 0x30001004, 0x20011004, 0x30011004, + 0x00101000, 0x10101000, 0x00111000, 0x10111000, + 0x00101004, 0x10101004, 0x00111004, 0x10111004, + 0x20101000, 0x30101000, 0x20111000, 0x30111000, + 0x20101004, 0x30101004, 0x20111004, 0x30111004}, + { /* for D bits (numbered as per FIPS 46) 8 9 11 12 13 14 */ + 0x00000000, 0x08000000, 0x00000008, 0x08000008, + 0x00000400, 0x08000400, 0x00000408, 0x08000408, + 0x00020000, 0x08020000, 0x00020008, 0x08020008, + 0x00020400, 0x08020400, 0x00020408, 0x08020408, + 0x00000001, 0x08000001, 0x00000009, 0x08000009, + 0x00000401, 0x08000401, 0x00000409, 0x08000409, + 0x00020001, 0x08020001, 0x00020009, 0x08020009, + 0x00020401, 0x08020401, 0x00020409, 0x08020409, + 0x02000000, 0x0A000000, 0x02000008, 0x0A000008, + 0x02000400, 0x0A000400, 0x02000408, 0x0A000408, + 0x02020000, 0x0A020000, 0x02020008, 0x0A020008, + 0x02020400, 0x0A020400, 0x02020408, 0x0A020408, + 0x02000001, 0x0A000001, 0x02000009, 0x0A000009, + 0x02000401, 0x0A000401, 0x02000409, 0x0A000409, + 0x02020001, 0x0A020001, 0x02020009, 0x0A020009, + 0x02020401, 0x0A020401, 0x02020409, 0x0A020409}, + { /* for D bits (numbered as per FIPS 46) 16 17 18 19 20 21 */ + 0x00000000, 0x00000100, 0x00080000, 0x00080100, + 0x01000000, 0x01000100, 0x01080000, 0x01080100, + 0x00000010, 0x00000110, 0x00080010, 0x00080110, + 0x01000010, 0x01000110, 0x01080010, 0x01080110, + 0x00200000, 0x00200100, 0x00280000, 0x00280100, + 0x01200000, 0x01200100, 0x01280000, 0x01280100, + 0x00200010, 0x00200110, 0x00280010, 0x00280110, + 0x01200010, 0x01200110, 0x01280010, 0x01280110, + 0x00000200, 0x00000300, 0x00080200, 0x00080300, + 0x01000200, 0x01000300, 0x01080200, 0x01080300, + 0x00000210, 0x00000310, 0x00080210, 0x00080310, + 0x01000210, 0x01000310, 0x01080210, 0x01080310, + 0x00200200, 0x00200300, 0x00280200, 0x00280300, + 0x01200200, 0x01200300, 0x01280200, 0x01280300, + 0x00200210, 0x00200310, 0x00280210, 0x00280310, + 0x01200210, 0x01200310, 0x01280210, 0x01280310}, + { /* for D bits (numbered as per FIPS 46) 22 23 24 25 27 28 */ + 0x00000000, 0x04000000, 0x00040000, 0x04040000, + 0x00000002, 0x04000002, 0x00040002, 0x04040002, + 0x00002000, 0x04002000, 0x00042000, 0x04042000, + 0x00002002, 0x04002002, 0x00042002, 0x04042002, + 0x00000020, 0x04000020, 0x00040020, 0x04040020, + 0x00000022, 0x04000022, 0x00040022, 0x04040022, + 0x00002020, 0x04002020, 0x00042020, 0x04042020, + 0x00002022, 0x04002022, 0x00042022, 0x04042022, + 0x00000800, 0x04000800, 0x00040800, 0x04040800, + 0x00000802, 0x04000802, 0x00040802, 0x04040802, + 0x00002800, 0x04002800, 0x00042800, 0x04042800, + 0x00002802, 0x04002802, 0x00042802, 0x04042802, + 0x00000820, 0x04000820, 0x00040820, 0x04040820, + 0x00000822, 0x04000822, 0x00040822, 0x04040822, + 0x00002820, 0x04002820, 0x00042820, 0x04042820, + 0x00002822, 0x04002822, 0x00042822, 0x04042822}, +}; + +#define c2l(c,l) (l =((unsigned long)(*((c)++))) , \ + l|=((unsigned long)(*((c)++)))<< 8, \ + l|=((unsigned long)(*((c)++)))<<16, \ + l|=((unsigned long)(*((c)++)))<<24) + +#define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \ + *((c)++)=(unsigned char)(((l)>> 8)&0xff), \ + *((c)++)=(unsigned char)(((l)>>16)&0xff), \ + *((c)++)=(unsigned char)(((l)>>24)&0xff)) + +/* + * IP and FP + * The problem is more of a geometric problem that random bit fiddling. + * 0 1 2 3 4 5 6 7 62 54 46 38 30 22 14 6 + * 8 9 10 11 12 13 14 15 60 52 44 36 28 20 12 4 + * 16 17 18 19 20 21 22 23 58 50 42 34 26 18 10 2 + * 24 25 26 27 28 29 30 31 to 56 48 40 32 24 16 8 0 + * + * 32 33 34 35 36 37 38 39 63 55 47 39 31 23 15 7 + * 40 41 42 43 44 45 46 47 61 53 45 37 29 21 13 5 + * 48 49 50 51 52 53 54 55 59 51 43 35 27 19 11 3 + * 56 57 58 59 60 61 62 63 57 49 41 33 25 17 9 1 + * + * The output has been subject to swaps of the form + * 0 1 -> 3 1 but the odd and even bits have been put into + * 2 3 2 0 + * different words. The main trick is to remember that + * t=((l>>size)^r)&(mask); + * r^=t; + * l^=(t<<size); + * can be used to swap and move bits between words. + * + * So l = 0 1 2 3 r = 16 17 18 19 + * 4 5 6 7 20 21 22 23 + * 8 9 10 11 24 25 26 27 + * 12 13 14 15 28 29 30 31 + * becomes (for size == 2 and mask == 0x3333) + * t = 2^16 3^17 -- -- l = 0 1 16 17 r = 2 3 18 19 + * 6^20 7^21 -- -- 4 5 20 21 6 7 22 23 + * 10^24 11^25 -- -- 8 9 24 25 10 11 24 25 + * 14^28 15^29 -- -- 12 13 28 29 14 15 28 29 + * + * Thanks for hints from Richard Outerbridge - he told me IP&FP + * could be done in 15 xor, 10 shifts and 5 ands. + * When I finally started to think of the problem in 2D + * I first got ~42 operations without xors. When I remembered + * how to use xors :-) I got it to its final state. + */ + +#define PERM_OP(a,b,t,n,m) ((t)=((((a)>>(n))^(b))&(m)),\ + (b)^=(t),\ + (a)^=((t)<<(n))) + +#define HPERM_OP(a,t,n,m) ((t)=((((a)<<(16-(n)))^(a))&(m)),\ + (a)=(a)^(t)^(t>>(16-(n)))) + + +/* The changes to this macro may help or hinder, depending on the + * compiler and the achitecture. gcc2 always seems to do well :-). + * Inspired by Dana How <how@isl.stanford.edu> + * DO NOT use the alternative version on machines with 8 byte longs. + */ +#ifdef ALT_ECB +#define D_ENCRYPT(L,R,S) \ + u=((R^s[S ])<<2); \ + t= R^s[S+1]; \ + t=((t>>2)+(t<<30)); \ + L^= \ + *(const unsigned long *)(des_SP+0x0100+((t )&0xfc))+ \ + *(const unsigned long *)(des_SP+0x0300+((t>> 8)&0xfc))+ \ + *(const unsigned long *)(des_SP+0x0500+((t>>16)&0xfc))+ \ + *(const unsigned long *)(des_SP+0x0700+((t>>24)&0xfc))+ \ + *(const unsigned long *)(des_SP+ ((u )&0xfc))+ \ + *(const unsigned long *)(des_SP+0x0200+((u>> 8)&0xfc))+ \ + *(const unsigned long *)(des_SP+0x0400+((u>>16)&0xfc))+ \ + *(const unsigned long *)(des_SP+0x0600+((u>>24)&0xfc)); +#else /* original version */ +#define D_ENCRYPT(L,R,S) \ + u=(R^s[S ]); \ + t=R^s[S+1]; \ + t=((t>>4)+(t<<28)); \ + L^= des_SPtrans[1][(t )&0x3f]| \ + des_SPtrans[3][(t>> 8)&0x3f]| \ + des_SPtrans[5][(t>>16)&0x3f]| \ + des_SPtrans[7][(t>>24)&0x3f]| \ + des_SPtrans[0][(u )&0x3f]| \ + des_SPtrans[2][(u>> 8)&0x3f]| \ + des_SPtrans[4][(u>>16)&0x3f]| \ + des_SPtrans[6][(u>>24)&0x3f]; +#endif + +#define ITERATIONS 16 + +static const char shifts2[16] = +{0, 0, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0}; + +static void des_set_key (char *, unsigned long *) internal_function; +static void des_encrypt (unsigned long *, unsigned long *, int) + internal_function; +int _des_crypt (char *, unsigned, struct desparams *); + +static void +internal_function +des_set_key (char *key, unsigned long *schedule) +{ + register unsigned long c, d, t, s; + register unsigned char *in; + register unsigned long *k; + register int i; + + k = (unsigned long *) schedule; + in = (unsigned char *) key; + + c2l (in, c); + c2l (in, d); + + /* I now do it in 47 simple operations :-) + * Thanks to John Fletcher (john_fletcher@lccmail.ocf.llnl.gov) + * for the inspiration. :-) */ + PERM_OP (d, c, t, 4, 0x0f0f0f0f); + HPERM_OP (c, t, -2, 0xcccc0000); + HPERM_OP (d, t, -2, 0xcccc0000); + PERM_OP (d, c, t, 1, 0x55555555); + PERM_OP (c, d, t, 8, 0x00ff00ff); + PERM_OP (d, c, t, 1, 0x55555555); + d = (((d & 0x000000ff) << 16) | (d & 0x0000ff00) | + ((d & 0x00ff0000) >> 16) | ((c & 0xf0000000) >> 4)); + c &= 0x0fffffff; + + for (i = 0; i < ITERATIONS; i++) + { + if (shifts2[i]) + { + c = ((c >> 2) | (c << 26)); + d = ((d >> 2) | (d << 26)); + } + else + { + c = ((c >> 1) | (c << 27)); + d = ((d >> 1) | (d << 27)); + } + c &= 0x0fffffff; + d &= 0x0fffffff; + /* could be a few less shifts but I am to lazy at this + * point in time to investigate */ + s = des_skb[0][(c) & 0x3f] | + des_skb[1][((c >> 6) & 0x03) | ((c >> 7) & 0x3c)] | + des_skb[2][((c >> 13) & 0x0f) | ((c >> 14) & 0x30)] | + des_skb[3][((c >> 20) & 0x01) | ((c >> 21) & 0x06) | ((c >> 22) & 0x38)]; + t = des_skb[4][(d) & 0x3f] | + des_skb[5][((d >> 7) & 0x03) | ((d >> 8) & 0x3c)] | + des_skb[6][(d >> 15) & 0x3f] | + des_skb[7][((d >> 21) & 0x0f) | ((d >> 22) & 0x30)]; + + /* table contained 0213 4657 */ + *(k++) = ((t << 16) | (s & 0x0000ffff)) & 0xffffffff; + s = ((s >> 16) | (t & 0xffff0000)); + + s = (s << 4) | (s >> 28); + *(k++) = s & 0xffffffff; + } +} + + +static void +internal_function +des_encrypt (unsigned long *buf, unsigned long *schedule, int encrypt) +{ + register unsigned long l, r, t, u; +#ifdef ALT_ECB + register const unsigned char *des_SP = (const unsigned char *) des_SPtrans; +#endif + register int i; + register unsigned long *s; + + l = buf[0]; + r = buf[1]; + + /* do IP */ + PERM_OP (r, l, t, 4, 0x0f0f0f0f); + PERM_OP (l, r, t, 16, 0x0000ffff); + PERM_OP (r, l, t, 2, 0x33333333); + PERM_OP (l, r, t, 8, 0x00ff00ff); + PERM_OP (r, l, t, 1, 0x55555555); + /* r and l are reversed - remember that :-) - fix + * it in the next step */ + + /* Things have been modified so that the initial rotate is + * done outside the loop. This required the + * des_SPtrans values in sp.h to be rotated 1 bit to the right. + * One perl script later and things have a 5% speed up on a sparc2. + * Thanks to Richard Outerbridge <71755.204@CompuServe.COM> + * for pointing this out. */ + t = (r << 1) | (r >> 31); + r = (l << 1) | (l >> 31); + l = t; + + /* clear the top bits on machines with 8byte longs */ + l &= 0xffffffff; + r &= 0xffffffff; + + s = (unsigned long *) schedule; + /* I don't know if it is worth the effort of loop unrolling the + * inner loop */ + if (encrypt) + { + for (i = 0; i < 32; i += 4) + { + D_ENCRYPT (l, r, i + 0); /* 1 */ + D_ENCRYPT (r, l, i + 2); /* 2 */ + } + } + else + { + for (i = 30; i > 0; i -= 4) + { + D_ENCRYPT (l, r, i - 0); /* 16 */ + D_ENCRYPT (r, l, i - 2); /* 15 */ + } + } + l = (l >> 1) | (l << 31); + r = (r >> 1) | (r << 31); + /* clear the top bits on machines with 8byte longs */ + l &= 0xffffffff; + r &= 0xffffffff; + + /* swap l and r + * we will not do the swap so just remember they are + * reversed for the rest of the subroutine + * luckily FP fixes this problem :-) */ + + PERM_OP (r, l, t, 1, 0x55555555); + PERM_OP (l, r, t, 8, 0x00ff00ff); + PERM_OP (r, l, t, 2, 0x33333333); + PERM_OP (l, r, t, 16, 0x0000ffff); + PERM_OP (r, l, t, 4, 0x0f0f0f0f); + + buf[0] = l; + buf[1] = r; + + l = r = t = u = 0; +} + + +int +_des_crypt (char *buf, unsigned len, struct desparams *desp) +{ + unsigned long schedule[32]; + register unsigned long tin0, tin1; + register unsigned long tout0, tout1, xor0, xor1; + register unsigned char *in, *out; + unsigned long tbuf[2]; + unsigned char *iv, *oiv; + int cbc_mode; + + cbc_mode = (desp->des_mode == CBC) ? 1 : 0; + + in = (unsigned char *) buf; + out = (unsigned char *) buf; + oiv = iv = (unsigned char *) desp->des_ivec; + + des_set_key (desp->des_key, schedule); + + tin0 = tin1 = 0; /* For GCC */ + if (desp->des_dir == ENCRYPT) + { + c2l (iv, tout0); + c2l (iv, tout1); + for (; len > 0; len -= 8) + { + c2l (in, tin0); + c2l (in, tin1); + if (cbc_mode) + { + tin0 ^= tout0; + tin1 ^= tout1; + } + tbuf[0] = tin0; + tbuf[1] = tin1; + des_encrypt (tbuf, schedule, 1); + tout0 = tbuf[0]; + tout1 = tbuf[1]; + l2c (tout0, out); + l2c (tout1, out); + } + l2c (tout0, oiv); + l2c (tout1, oiv); + } + else + { + c2l (iv, xor0); + c2l (iv, xor1); + for (; len > 0; len -= 8) + { + c2l (in, tin0); + c2l (in, tin1); + tbuf[0] = tin0; + tbuf[1] = tin1; + des_encrypt (tbuf, schedule, 0); + if (cbc_mode) + { + tout0 = tbuf[0] ^ xor0; + tout1 = tbuf[1] ^ xor1; + xor0 = tin0; + xor1 = tin1; + } + else + { + tout0 = tbuf[0]; + tout1 = tbuf[1]; + } + l2c (tout0, out); + l2c (tout1, out); + } + l2c (tin0, oiv); + l2c (tin1, oiv); + } + tin0 = tin1 = tout0 = tout1 = xor0 = xor1 = 0; + tbuf[0] = tbuf[1] = 0; + __bzero (schedule, sizeof (schedule)); + + return (1); +} diff --git a/crypt/sysdeps/unix/patchlevel.h b/crypt/sysdeps/unix/patchlevel.h new file mode 100644 index 0000000000..450c091f60 --- /dev/null +++ b/crypt/sysdeps/unix/patchlevel.h @@ -0,0 +1,25 @@ +/* + * UFC-crypt: ultra fast crypt(3) implementation + * + * Copyright (C) 1991, 1992, 1993, 1996 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; see the file COPYING.LIB. If not, + * write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + * + * @(#)patchlevel.h 1.13 9/10/96 + * + */ + +#define PATCHLEVEL "UFC-crypt, patchlevel 1e, @(#)patchlevel.h 1.13 9/10/96" diff --git a/crypt/sysdeps/unix/ufc-crypt.h b/crypt/sysdeps/unix/ufc-crypt.h new file mode 100644 index 0000000000..879211afec --- /dev/null +++ b/crypt/sysdeps/unix/ufc-crypt.h @@ -0,0 +1,29 @@ +/* Types for UFC-crypt. + Copyright (C) 1998 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C 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. + + The GNU C 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 the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <stdint.h> + +typedef uint_fast32_t ufc_long; +typedef uint64_t long64; +typedef uint32_t long32; +#if UINT_FAST32_MAX == UINT_FAST64_MAX +# define _UFC_64_ +#else +# define _UFC_32_ +#endif |