glibc/crypt/crypt-entry.c
Ulrich Drepper c3266dc0d8 * crypt/Makefile (libcrypt-routines): Add sha256-crypt, sha256,
sha512-crypt, and sha512.
	(tests): Add sha256test, sha256c-test, sha512test, and sha512c-test.
	(distribute): Add sha256.h and sha512.h.
	* crypt/crypt-entry.c (crypt): Recognize the new $5$ and $6$ prefixes
	and call the appropriate code.
	* crypt/sha256-crypt.c: New file.
	* crypt/sha256.c: New file.
	* crypt/sha256.h: New file.
	* crypt/sha256c-test.c: New file.
	* crypt/sha256test.c: New file.
	* crypt/sha512-crypt.c: New file.
	* crypt/sha512.c: New file.
	* crypt/sha512.h: New file.
	* crypt/sha512c-test.c: New file.
	* crypt/sha512test.c: New file.

	* sysdeps/unix/sysv/linux/sparc/sparc32/clone.S (__thread_start):
	Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/clone.S (__thread_start):
	Likewise.
2007-09-19 20:37:48 +00:00

180 lines
4.9 KiB
C

/*
* UFC-crypt: ultra fast crypt(3) implementation
*
* Copyright (C) 1991,1992,1993,1996,1997,2007 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);
extern char *__sha256_crypt_r (const char *key, const char *salt,
char *buffer, int buflen);
extern char *__sha256_crypt (const char *key, const char *salt);
extern char *__sha512_crypt_r (const char *key, const char *salt,
char *buffer, int buflen);
extern char *__sha512_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[] = "$1$";
/* Magic string for SHA256 encryption. */
static const char sha256_salt_prefix[] = "$5$";
/* Magic string for SHA512 encryption. */
static const char sha512_salt_prefix[] = "$6$";
/* 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));
/* Try to find out whether we have to use SHA256 encryption replacement. */
if (strncmp (sha256_salt_prefix, salt, sizeof (sha256_salt_prefix) - 1) == 0)
return __sha256_crypt_r (key, salt, (char *) data,
sizeof (struct crypt_data));
/* Try to find out whether we have to use SHA512 encryption replacement. */
if (strncmp (sha512_salt_prefix, salt, sizeof (sha512_salt_prefix) - 1) == 0)
return __sha512_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);
/* Try to find out whether we have to use SHA256 encryption replacement. */
if (strncmp (sha256_salt_prefix, salt, sizeof (sha256_salt_prefix) - 1) == 0)
return __sha256_crypt (key, salt);
/* Try to find out whether we have to use SHA512 encryption replacement. */
if (strncmp (sha512_salt_prefix, salt, sizeof (sha512_salt_prefix) - 1) == 0)
return __sha512_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