dist/ntp/libntp/authusekey.c

   1 /*      $NetBSD$        */
   2
   3 /*
   4  * authusekey - decode a key from ascii and use it
   5  */
   6 #include <stdio.h>
   7 #include <ctype.h>
   8
   9 #include "ntp_types.h"
  10 #include "ntp_string.h"
  11 #include "ntp_stdlib.h"
  12
  13 /*
  14  * Types of ascii representations for keys.  "Standard" means a 64 bit
  15  * hex number in NBS format, i.e. with the low order bit of each byte
  16  * a parity bit.  "NTP" means a 64 bit key in NTP format, with the
  17  * high order bit of each byte a parity bit.  "Ascii" means a 1-to-8
  18  * character string whose ascii representation is used as the key.
  19  */
  20
  21 #define KEY_TYPE_MD5    4
  22
  23 int
  24 authusekey(
  25         keyid_t keyno,
  26         int keytype,
  27         const u_char *str
  28         )
  29 {
  30         const u_char *cp;
  31         int len;
  32
  33         cp = str;
  34         len = strlen((const char *)cp);
  35         if (len == 0)
  36             return 0;
  37
  38         switch(keytype) {
  39             case KEY_TYPE_MD5:
  40                 MD5auth_setkey(keyno, str, (int)strlen((const char *)str));
  41                 break;
  42
  43             default:
  44                 /* Oh, well */
  45                 return 0;
  46         }
  47
  48         return 1;
  49 }