84d9c625bf
- Fix for possible unset uid/gid in toproto
- Fix for default mtree style
- Update libelf
- Importing libexecinfo
- Resynchronize GCC, mpc, gmp, mpfr
- build.sh: Replace params with show-params.
This has been done as the make target has been renamed in the same
way, while a new target named params has been added. This new
target generates a file containing all the parameters, instead of
printing it on the console.
- Update test48 with new etc/services (Fix by Ben Gras <ben@minix3.org)
get getservbyport() out of the inner loop
Change-Id: Ie6ad5226fa2621ff9f0dee8782ea48f9443d2091
149 lines
4 KiB
C
149 lines
4 KiB
C
/* $NetBSD: md5crypt.c,v 1.14 2013/08/28 17:47:07 riastradh Exp $ */
|
|
|
|
/*
|
|
* ----------------------------------------------------------------------------
|
|
* "THE BEER-WARE LICENSE" (Revision 42):
|
|
* <phk@login.dknet.dk> wrote this file. As long as you retain this notice you
|
|
* can do whatever you want with this stuff. If we meet some day, and you think
|
|
* this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
|
|
* ----------------------------------------------------------------------------
|
|
*
|
|
* from FreeBSD: crypt.c,v 1.5 1996/10/14 08:34:02 phk Exp
|
|
* via OpenBSD: md5crypt.c,v 1.9 1997/07/23 20:58:27 kstailey Exp
|
|
*
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
#if !defined(lint)
|
|
__RCSID("$NetBSD: md5crypt.c,v 1.14 2013/08/28 17:47:07 riastradh Exp $");
|
|
#endif /* not lint */
|
|
|
|
#include <unistd.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <md5.h>
|
|
|
|
#include "crypt.h"
|
|
|
|
#define MD5_MAGIC "$1$"
|
|
#define MD5_MAGIC_LEN 3
|
|
|
|
#define INIT(x) MD5Init((x))
|
|
#define UPDATE(x, b, l) MD5Update((x), (b), (l))
|
|
#define FINAL(v, x) MD5Final((v), (x))
|
|
|
|
|
|
/*
|
|
* MD5 password encryption.
|
|
*/
|
|
char *
|
|
__md5crypt(const char *pw, const char *salt)
|
|
{
|
|
static char passwd[120], *p;
|
|
const char *sp, *ep;
|
|
unsigned char final[16];
|
|
unsigned int i, sl, pwl;
|
|
MD5_CTX ctx, ctx1;
|
|
u_int32_t l;
|
|
int pl;
|
|
|
|
pwl = strlen(pw);
|
|
|
|
/* Refine the salt first */
|
|
sp = salt;
|
|
|
|
/* If it starts with the magic string, then skip that */
|
|
if (strncmp(sp, MD5_MAGIC, MD5_MAGIC_LEN) == 0)
|
|
sp += MD5_MAGIC_LEN;
|
|
|
|
/* It stops at the first '$', max 8 chars */
|
|
for (ep = sp; *ep != '\0' && *ep != '$' && ep < (sp + 8); ep++)
|
|
continue;
|
|
|
|
/* get the length of the true salt */
|
|
sl = ep - sp;
|
|
|
|
INIT(&ctx);
|
|
|
|
/* The password first, since that is what is most unknown */
|
|
UPDATE(&ctx, (const unsigned char *)pw, pwl);
|
|
|
|
/* Then our magic string */
|
|
UPDATE(&ctx, (const unsigned char *)MD5_MAGIC, MD5_MAGIC_LEN);
|
|
|
|
/* Then the raw salt */
|
|
UPDATE(&ctx, (const unsigned char *)sp, sl);
|
|
|
|
/* Then just as many characters of the MD5(pw,salt,pw) */
|
|
INIT(&ctx1);
|
|
UPDATE(&ctx1, (const unsigned char *)pw, pwl);
|
|
UPDATE(&ctx1, (const unsigned char *)sp, sl);
|
|
UPDATE(&ctx1, (const unsigned char *)pw, pwl);
|
|
FINAL(final, &ctx1);
|
|
|
|
for (pl = pwl; pl > 0; pl -= 16)
|
|
UPDATE(&ctx, final, (unsigned int)(pl > 16 ? 16 : pl));
|
|
|
|
/* Don't leave anything around in vm they could use. */
|
|
memset(final, 0, sizeof(final));
|
|
|
|
/* Then something really weird... */
|
|
for (i = pwl; i != 0; i >>= 1)
|
|
if ((i & 1) != 0)
|
|
UPDATE(&ctx, final, 1);
|
|
else
|
|
UPDATE(&ctx, (const unsigned char *)pw, 1);
|
|
|
|
/* Now make the output string */
|
|
memcpy(passwd, MD5_MAGIC, MD5_MAGIC_LEN);
|
|
strlcpy(passwd + MD5_MAGIC_LEN, sp, sl + 1);
|
|
strlcat(passwd, "$", sizeof(passwd));
|
|
|
|
FINAL(final, &ctx);
|
|
|
|
/* memset(&ctx, 0, sizeof(ctx)); done by MD5Final() */
|
|
|
|
/*
|
|
* And now, just to make sure things don't run too fast. On a 60 MHz
|
|
* Pentium this takes 34 msec, so you would need 30 seconds to build
|
|
* a 1000 entry dictionary...
|
|
*/
|
|
for (i = 0; i < 1000; i++) {
|
|
INIT(&ctx1);
|
|
|
|
if ((i & 1) != 0)
|
|
UPDATE(&ctx1, (const unsigned char *)pw, pwl);
|
|
else
|
|
UPDATE(&ctx1, final, 16);
|
|
|
|
if ((i % 3) != 0)
|
|
UPDATE(&ctx1, (const unsigned char *)sp, sl);
|
|
|
|
if ((i % 7) != 0)
|
|
UPDATE(&ctx1, (const unsigned char *)pw, pwl);
|
|
|
|
if ((i & 1) != 0)
|
|
UPDATE(&ctx1, final, 16);
|
|
else
|
|
UPDATE(&ctx1, (const unsigned char *)pw, pwl);
|
|
|
|
FINAL(final, &ctx1);
|
|
}
|
|
|
|
/* memset(&ctx1, 0, sizeof(ctx1)); done by MD5Final() */
|
|
|
|
p = passwd + sl + MD5_MAGIC_LEN + 1;
|
|
|
|
l = (final[ 0]<<16) | (final[ 6]<<8) | final[12]; __crypt_to64(p,l,4); p += 4;
|
|
l = (final[ 1]<<16) | (final[ 7]<<8) | final[13]; __crypt_to64(p,l,4); p += 4;
|
|
l = (final[ 2]<<16) | (final[ 8]<<8) | final[14]; __crypt_to64(p,l,4); p += 4;
|
|
l = (final[ 3]<<16) | (final[ 9]<<8) | final[15]; __crypt_to64(p,l,4); p += 4;
|
|
l = (final[ 4]<<16) | (final[10]<<8) | final[ 5]; __crypt_to64(p,l,4); p += 4;
|
|
l = final[11] ; __crypt_to64(p,l,2); p += 2;
|
|
*p = '\0';
|
|
|
|
/* Don't leave anything around in vm they could use. */
|
|
explicit_memset(final, 0, sizeof(final));
|
|
return (passwd);
|
|
}
|