/*
* ----------------------------------------------------------------------------
* "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
+ * <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
* ----------------------------------------------------------------------------
*/
-#include "includes.h"
+/*
+ * Ported from FreeBSD to Linux, only minimal changes. --marekm
+ */
-#if defined(HAVE_MD5_PASSWORDS) && !defined(HAVE_MD5_CRYPT)
-#include <openssl/md5.h>
+/*
+ * Adapted from shadow-19990607 by Tudor Bosman, tudorb@jm.nu
+ */
+
+#include "includes.h"
RCSID("$Id$");
-/* 0 ... 63 => ascii - 64 */
-static unsigned char itoa64[] =
- "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
+#if defined(HAVE_MD5_PASSWORDS) && !defined(HAVE_MD5_CRYPT)
-static char *magic = "$1$";
+#include <openssl/md5.h>
-static char *
-to64(unsigned long v, int n)
-{
- static char buf[5];
- char *s = buf;
+static unsigned char itoa64[] = /* 0 ... 63 => ascii - 64 */
+ "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
- if (n > 4)
- return (NULL);
+static char *magic = "$1$"; /*
+ * This string is magic for
+ * this algorithm. Having
+ * it this way, we can get
+ * get better later on
+ */
- memset(buf, '\0', sizeof(buf));
+static void
+to64(char *s, unsigned long v, int n)
+{
while (--n >= 0) {
*s++ = itoa64[v&0x3f];
v >>= 6;
}
-
- return (buf);
}
int
is_md5_salt(const char *salt)
{
- return (strncmp(salt, magic, strlen(magic)) == 0);
+ 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], salt_copy[9], *p;
- static const char *sp, *ep;
- unsigned char final[16];
- int sl, pl, i, j;
- MD5_CTX ctx, ctx1;
+ 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)) == 0)
+ if(!strncmp(sp,magic,strlen(magic)))
sp += strlen(magic);
/* It stops at the first '$', max 8 chars */
- for (ep = sp; *ep != '$'; ep++) {
- if (*ep == '\0' || ep >= (sp + 8))
- return (NULL);
- }
+ for(ep=sp;*ep && *ep != '$' && ep < (sp+8);ep++)
+ continue;
/* get the length of the true salt */
sl = ep - sp;
- /* Stash the salt */
- memcpy(salt_copy, sp, sl);
- salt_copy[sl] = '\0';
-
MD5_Init(&ctx);
/* The password first, since that is what is most unknown */
- MD5_Update(&ctx, pw, strlen(pw));
+ MD5_Update(&ctx,pw,strlen(pw));
/* Then our magic string */
- MD5_Update(&ctx, magic, strlen(magic));
+ MD5_Update(&ctx,magic,strlen(magic));
/* Then the raw salt */
- MD5_Update(&ctx, sp, sl);
+ MD5_Update(&ctx,sp,sl);
- /* Then just as many characters of the MD5(pw, salt, pw) */
+ /* Then just as many characters of the MD5(pw,salt,pw) */
MD5_Init(&ctx1);
- MD5_Update(&ctx1, pw, strlen(pw));
- MD5_Update(&ctx1, sp, sl);
- MD5_Update(&ctx1, pw, strlen(pw));
- MD5_Final(final, &ctx1);
-
+ MD5_Update(&ctx1,pw,strlen(pw));
+ MD5_Update(&ctx1,sp,sl);
+ MD5_Update(&ctx1,pw,strlen(pw));
+ MD5_Final(final,&ctx1);
for(pl = strlen(pw); pl > 0; pl -= 16)
- MD5_Update(&ctx, final, pl > 16 ? 16 : pl);
+ MD5_Update(&ctx,final,pl>16 ? 16 : pl);
/* Don't leave anything around in vm they could use. */
- memset(final, '\0', sizeof final);
+ memset(final,0,sizeof final);
/* Then something really weird... */
- for (j = 0, i = strlen(pw); i != 0; i >>= 1)
- if (i & 1)
- MD5_Update(&ctx, final + j, 1);
+ for (j=0,i = strlen(pw); i ; i >>= 1)
+ if(i&1)
+ MD5_Update(&ctx, final+j, 1);
else
- MD5_Update(&ctx, pw + j, 1);
+ MD5_Update(&ctx, pw+j, 1);
/* Now make the output string */
- snprintf(passwd, sizeof(passwd), "%s%s$", magic, salt_copy);
+ strcpy(passwd,magic);
+ strncat(passwd,sp,sl);
+ strcat(passwd,"$");
- MD5_Final(final, &ctx);
+ 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++) {
+ for(i=0;i<1000;i++) {
MD5_Init(&ctx1);
- if (i & 1)
- MD5_Update(&ctx1, pw, strlen(pw));
+ if(i & 1)
+ MD5_Update(&ctx1,pw,strlen(pw));
else
- MD5_Update(&ctx1, final, 16);
+ MD5_Update(&ctx1,final,16);
- if (i % 3)
- MD5_Update(&ctx1, sp, sl);
+ if(i % 3)
+ MD5_Update(&ctx1,sp,sl);
- if (i % 7)
- MD5_Update(&ctx1, pw, strlen(pw));
+ if(i % 7)
+ MD5_Update(&ctx1,pw,strlen(pw));
- if (i & 1)
- MD5_Update(&ctx1, final, 16);
+ if(i & 1)
+ MD5_Update(&ctx1,final,16);
else
- MD5_Update(&ctx1, pw, strlen(pw));
-
- MD5_Final(final, &ctx1);
+ MD5_Update(&ctx1,pw,strlen(pw));
+ MD5_Final(final,&ctx1);
}
p = passwd + strlen(passwd);
- l = (final[ 0]<<16) | (final[ 6]<<8) | final[12];
- strlcat(passwd, to64(l, 4), sizeof(passwd));
- l = (final[ 1]<<16) | (final[ 7]<<8) | final[13];
- strlcat(passwd, to64(l, 4), sizeof(passwd));
- l = (final[ 2]<<16) | (final[ 8]<<8) | final[14];
- strlcat(passwd, to64(l, 4), sizeof(passwd));
- l = (final[ 3]<<16) | (final[ 9]<<8) | final[15];
- strlcat(passwd, to64(l, 4), sizeof(passwd));
- l = (final[ 4]<<16) | (final[10]<<8) | final[ 5];
- strlcat(passwd, to64(l, 4), sizeof(passwd));
- l = final[11] ;
- strlcat(passwd, to64(l, 2), sizeof(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));
- memset(salt_copy, 0, sizeof(salt_copy));
- memset(&ctx, 0, sizeof(ctx));
- memset(&ctx1, 0, sizeof(ctx1));
- (void)to64(0, 4);
+ memset(final,0,sizeof final);
- return (passwd);
+ return passwd;
}
#endif /* defined(HAVE_MD5_PASSWORDS) && !defined(HAVE_MD5_CRYPT) */
andersk / gssapi-openssh.git / blobdiff