diff options
Diffstat (limited to 'src/ladmin/md5calc.c')
| -rw-r--r-- | src/ladmin/md5calc.c | 42 |
1 files changed, 41 insertions, 1 deletions
diff --git a/src/ladmin/md5calc.c b/src/ladmin/md5calc.c index 49a4aaa..cf9d958 100644 --- a/src/ladmin/md5calc.c +++ b/src/ladmin/md5calc.c @@ -1,4 +1,4 @@ -// $Id: md5calc.c,v 1.1.1.1 2004/09/10 17:26:53 MagicalTux Exp $ +// $Id: md5calc.c,v 1.1.1.1 2004/09/10 17:26:54 MagicalTux Exp $ /*********************************************************** * md5 calculation algorithm * @@ -10,6 +10,7 @@ #include "md5calc.h" #include <string.h> #include <stdio.h> +#include "mt_rand.h" #ifndef UINT_MAX #define UINT_MAX 4294967295U @@ -291,3 +292,42 @@ void MD5_String (const char *string, char *output) digest[8], digest[9], digest[10], digest[11], digest[12], digest[13], digest[14], digest[15]); } + +// Hash a password with a salt. +char *MD5_saltcrypt(const char *key, const char *salt) +{ + char buf[66], *sbuf = buf+32; + static char obuf[33]; + + // hash the key then the salt + // buf ends up as a 64char null terminated string + MD5_String(key, buf); + MD5_String(salt, sbuf); + + // Hash the buffer back into sbuf + MD5_String(buf, sbuf); + + snprintf(obuf, 32, "!%s$%s", salt, sbuf); + return(obuf); +} + +char *make_salt() { + static char salt[6]; + int i; + for (i=0; i<5; i++) + salt[i] = (char)((mt_rand() % 78) + 48); + salt[5] = '\0'; + return(salt); +} + +int pass_ok(const char *password, const char *crypted) { + char buf[40], *salt=buf+1; + + strncpy(buf, crypted, 40); + *strchr(buf, '$') = '\0'; + + if (!strcmp(crypted, MD5_saltcrypt(password, salt))) + return(1); + + return(0); +} |