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Diffstat (limited to 'crypto/openssh/md5crypt.c')
| -rw-r--r-- | crypto/openssh/md5crypt.c | 159 |
1 files changed, 0 insertions, 159 deletions
diff --git a/crypto/openssh/md5crypt.c b/crypto/openssh/md5crypt.c deleted file mode 100644 index ba98ccccc2ba3..0000000000000 --- a/crypto/openssh/md5crypt.c +++ /dev/null @@ -1,159 +0,0 @@ -/* - * ---------------------------------------------------------------------------- - * "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 - * ---------------------------------------------------------------------------- - */ - -/* - * Ported from FreeBSD to Linux, only minimal changes. --marekm - */ - -/* - * Adapted from shadow-19990607 by Tudor Bosman, tudorb@jm.nu - */ - -#include "includes.h" - -RCSID("$Id: md5crypt.c,v 1.5 2001/02/09 01:55:36 djm Exp $"); - -#if defined(HAVE_MD5_PASSWORDS) && !defined(HAVE_MD5_CRYPT) - -#include <openssl/md5.h> - -static unsigned char itoa64[] = /* 0 ... 63 => ascii - 64 */ - "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"; - -static char *magic = "$1$"; /* - * This string is magic for - * this algorithm. Having - * it this way, we can get - * get better later on - */ - -static void -to64(char *s, unsigned long v, int n) -{ - while (--n >= 0) { - *s++ = itoa64[v&0x3f]; - v >>= 6; - } -} - -int -is_md5_salt(const char *salt) -{ - return (!strncmp(salt, magic, strlen(magic))); -} - -/* - * UNIX password - * - * Use MD5 for what it is best at... - */ - -char * -md5_crypt(const char *pw, const char *salt) -{ - 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; - - MD5_Init(&ctx); - - /* The password first, since that is what is most unknown */ - MD5_Update(&ctx,pw,strlen(pw)); - - /* Then our magic string */ - MD5_Update(&ctx,magic,strlen(magic)); - - /* Then the raw salt */ - MD5_Update(&ctx,sp,sl); - - /* Then just as many characters of the MD5(pw,salt,pw) */ - MD5_Init(&ctx1); - MD5_Update(&ctx1,pw,strlen(pw)); - MD5_Update(&ctx1,sp,sl); - MD5_Update(&ctx1,pw,strlen(pw)); - MD5_Final(final,&ctx1); - for(pl = strlen(pw); pl > 0; pl -= 16) - MD5_Update(&ctx,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) - MD5_Update(&ctx, final+j, 1); - else - MD5_Update(&ctx, pw+j, 1); - - /* Now make the output string */ - strcpy(passwd,magic); - strncat(passwd,sp,sl); - strcat(passwd,"$"); - - MD5_Final(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++) { - MD5_Init(&ctx1); - if(i & 1) - MD5_Update(&ctx1,pw,strlen(pw)); - else - MD5_Update(&ctx1,final,16); - - if(i % 3) - MD5_Update(&ctx1,sp,sl); - - if(i % 7) - MD5_Update(&ctx1,pw,strlen(pw)); - - if(i & 1) - MD5_Update(&ctx1,final,16); - else - MD5_Update(&ctx1,pw,strlen(pw)); - MD5_Final(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; -} - -#endif /* defined(HAVE_MD5_PASSWORDS) && !defined(HAVE_MD5_CRYPT) */ |