mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-22 21:10:07 +00:00
a1b36134f6
* manual/lesser.texi: Renamed from manual/lgpl.texinfo,
as fsf.org uses the name "lesser.texi".
* manual/Makefile (texis): Follow rename.
150 lines
3.5 KiB
C
150 lines
3.5 KiB
C
/*
|
|
* UFC-crypt: ultra fast crypt(3) implementation
|
|
*
|
|
* Copyright (C) 1991, 1992, 1993, 1996, 1997 Free Software Foundation, Inc.
|
|
*
|
|
* The GNU C Library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 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
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with the GNU C Library; 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
|