diff options
Diffstat (limited to 'contrib/syslinux/latest/com32/libutil/crypt-md5.c')
| -rw-r--r-- | contrib/syslinux/latest/com32/libutil/crypt-md5.c | 173 |
1 files changed, 0 insertions, 173 deletions
diff --git a/contrib/syslinux/latest/com32/libutil/crypt-md5.c b/contrib/syslinux/latest/com32/libutil/crypt-md5.c deleted file mode 100644 index 49e9532..0000000 --- a/contrib/syslinux/latest/com32/libutil/crypt-md5.c +++ /dev/null @@ -1,173 +0,0 @@ -/*- - * Copyright (c) 2003 Poul-Henning Kamp - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#include <inttypes.h> -#include <md5.h> -#include <string.h> - -/* - * UNIX password - */ - -static char *_crypt_to64(char *s, uint32_t v, int n) -{ - static const char itoa64[64] = "./0123456789" - "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"; - - while (--n >= 0) { - *s++ = itoa64[v & 0x3f]; - v >>= 6; - } - return s; -} - -char *crypt_md5(const char *pw, const char *salt) -{ - MD5_CTX ctx, ctx1; - unsigned long l; - int sl, pl; - uint32_t i; - uint8_t final[MD5_SIZE]; - const char *sp; - static char passwd[120]; /* Output buffer */ - static const char magic[] = "$1$"; - char *p; - const int magic_len = sizeof magic - 1; - int pwlen = strlen(pw); - - /* Refine the Salt first */ - sp = salt; - - /* If it starts with the magic string, then skip that */ - if (!strncmp(sp, magic, magic_len)) - sp += magic_len; - - /* Compute the salt length: - it stops at the first '$', max 8 chars */ - for (sl = 0; sl < 8 && sp[sl] && sp[sl] != '$'; sl++) ; - - MD5Init(&ctx); - - /* The password first, since that is what is most unknown */ - MD5Update(&ctx, pw, pwlen); - - /* Then our magic string */ - MD5Update(&ctx, magic, magic_len); - - /* Then the raw salt */ - MD5Update(&ctx, sp, sl); - - /* Then just as many characters of the MD5(pw,salt,pw) */ - MD5Init(&ctx1); - MD5Update(&ctx1, pw, pwlen); - MD5Update(&ctx1, sp, sl); - MD5Update(&ctx1, pw, pwlen); - MD5Final(final, &ctx1); - for (pl = pwlen; pl > 0; pl -= MD5_SIZE) - MD5Update(&ctx, final, pl > MD5_SIZE ? MD5_SIZE : pl); - - /* Don't leave anything around in vm they could use. */ - memset(final, 0, sizeof final); - - /* Then something really weird... */ - for (i = pwlen; i; i >>= 1) - if (i & 1) - MD5Update(&ctx, final, 1); - else - MD5Update(&ctx, pw, 1); - - /* Now make the output string */ - p = passwd; - - memcpy(p, magic, magic_len); - p += magic_len; - - memcpy(p, sp, sl); - p += sl; - - *p++ = '$'; - - MD5Final(final, &ctx); - - /* - * 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++) { - MD5Init(&ctx1); - if (i & 1) - MD5Update(&ctx1, pw, pwlen); - else - MD5Update(&ctx1, final, MD5_SIZE); - - if (i % 3) - MD5Update(&ctx1, sp, sl); - - if (i % 7) - MD5Update(&ctx1, pw, pwlen); - - if (i & 1) - MD5Update(&ctx1, final, MD5_SIZE); - else - MD5Update(&ctx1, pw, pwlen); - MD5Final(final, &ctx1); - } - - l = (final[0] << 16) | (final[6] << 8) | final[12]; - p = _crypt_to64(p, l, 4); - l = (final[1] << 16) | (final[7] << 8) | final[13]; - p = _crypt_to64(p, l, 4); - l = (final[2] << 16) | (final[8] << 8) | final[14]; - p = _crypt_to64(p, l, 4); - l = (final[3] << 16) | (final[9] << 8) | final[15]; - p = _crypt_to64(p, l, 4); - l = (final[4] << 16) | (final[10] << 8) | final[5]; - p = _crypt_to64(p, l, 4); - l = final[11]; - p = _crypt_to64(p, l, 2); - *p = '\0'; - - /* Don't leave anything around in vm they could use. */ - memset(final, 0, sizeof final); - - return passwd; -} - -#ifdef TEST -#include <stdio.h> - -int main(int argc, char *argv[]) -{ - int i; - - for (i = 2; i < argc; i += 2) { - puts(crypt_md5(argv[i], argv[i - 1])); - } - return 0; -} - -#endif |