diff options
Diffstat (limited to 'Linux-PAM/modules/pam_pwdb/md5_crypt.c')
| -rw-r--r-- | Linux-PAM/modules/pam_pwdb/md5_crypt.c | 138 |
1 files changed, 0 insertions, 138 deletions
diff --git a/Linux-PAM/modules/pam_pwdb/md5_crypt.c b/Linux-PAM/modules/pam_pwdb/md5_crypt.c deleted file mode 100644 index 826087f2..00000000 --- a/Linux-PAM/modules/pam_pwdb/md5_crypt.c +++ /dev/null @@ -1,138 +0,0 @@ -/* $Id: md5_crypt.c,v 1.2 2000/12/04 19:02:34 baggins 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 - * ---------------------------------------------------------------------------- - * - * Origin: Id: crypt.c,v 1.3 1995/05/30 05:42:22 rgrimes Exp - * - */ - -#include <string.h> -#include "md5.h" - -static unsigned char itoa64[] = /* 0 ... 63 => ascii - 64 */ - "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"; - -static void -to64(char *s, unsigned long v, int n) -{ - while (--n >= 0) { - *s++ = itoa64[v&0x3f]; - v >>= 6; - } -} - -/* - * UNIX password - * - * Use MD5 for what it is best at... - */ - -char * MD5Name(crypt_md5)(const char *pw, const char *salt) -{ - const char *magic = "$1$"; - /* This string is magic for this algorithm. Having - * it this way, we can get get better later on */ - static char passwd[120], *p; - static const char *sp,*ep; - unsigned char final[16]; - int sl,pl,i,j; - MD5_CTX ctx,ctx1; - unsigned long l; - - /* Refine the Salt first */ - sp = salt; - - /* If it starts with the magic string, then skip that */ - if(!strncmp(sp,magic,strlen(magic))) - sp += strlen(magic); - - /* It stops at the first '$', max 8 chars */ - for(ep=sp;*ep && *ep != '$' && ep < (sp+8);ep++) - continue; - - /* get the length of the true salt */ - sl = ep - sp; - - MD5Name(MD5Init)(&ctx); - - /* The password first, since that is what is most unknown */ - MD5Name(MD5Update)(&ctx,(unsigned const char *)pw,strlen(pw)); - - /* Then our magic string */ - MD5Name(MD5Update)(&ctx,(unsigned const char *)magic,strlen(magic)); - - /* Then the raw salt */ - MD5Name(MD5Update)(&ctx,(unsigned const char *)sp,sl); - - /* Then just as many characters of the MD5(pw,salt,pw) */ - MD5Name(MD5Init)(&ctx1); - MD5Name(MD5Update)(&ctx1,(unsigned const char *)pw,strlen(pw)); - MD5Name(MD5Update)(&ctx1,(unsigned const char *)sp,sl); - MD5Name(MD5Update)(&ctx1,(unsigned const char *)pw,strlen(pw)); - MD5Name(MD5Final)(final,&ctx1); - for(pl = strlen(pw); pl > 0; pl -= 16) - MD5Name(MD5Update)(&ctx,(unsigned const char *)final,pl>16 ? 16 : pl); - - /* Don't leave anything around in vm they could use. */ - memset(final,0,sizeof final); - - /* Then something really weird... */ - for (j=0,i = strlen(pw); i ; i >>= 1) - if(i&1) - MD5Name(MD5Update)(&ctx, (unsigned const char *)final+j, 1); - else - MD5Name(MD5Update)(&ctx, (unsigned const char *)pw+j, 1); - - /* Now make the output string */ - strcpy(passwd,magic); - strncat(passwd,sp,sl); - strcat(passwd,"$"); - - MD5Name(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++) { - MD5Name(MD5Init)(&ctx1); - if(i & 1) - MD5Name(MD5Update)(&ctx1,(unsigned const char *)pw,strlen(pw)); - else - MD5Name(MD5Update)(&ctx1,(unsigned const char *)final,16); - - if(i % 3) - MD5Name(MD5Update)(&ctx1,(unsigned const char *)sp,sl); - - if(i % 7) - MD5Name(MD5Update)(&ctx1,(unsigned const char *)pw,strlen(pw)); - - if(i & 1) - MD5Name(MD5Update)(&ctx1,(unsigned const char *)final,16); - else - MD5Name(MD5Update)(&ctx1,(unsigned const char *)pw,strlen(pw)); - MD5Name(MD5Final)(final,&ctx1); - } - - p = passwd + strlen(passwd); - - l = (final[ 0]<<16) | (final[ 6]<<8) | final[12]; to64(p,l,4); p += 4; - l = (final[ 1]<<16) | (final[ 7]<<8) | final[13]; to64(p,l,4); p += 4; - l = (final[ 2]<<16) | (final[ 8]<<8) | final[14]; to64(p,l,4); p += 4; - l = (final[ 3]<<16) | (final[ 9]<<8) | final[15]; to64(p,l,4); p += 4; - l = (final[ 4]<<16) | (final[10]<<8) | final[ 5]; to64(p,l,4); p += 4; - l = final[11] ; to64(p,l,2); p += 2; - *p = '\0'; - - /* Don't leave anything around in vm they could use. */ - memset(final,0,sizeof final); - - return passwd; -} - |