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skey.h revision 1.7
      1  1.7      mjl /*	$NetBSD: skey.h,v 1.7 2000/07/06 22:30:19 mjl Exp $	*/
      2  1.3  thorpej 
      3  1.1  deraadt /*
      4  1.1  deraadt  * S/KEY v1.1b (skey.h)
      5  1.1  deraadt  *
      6  1.1  deraadt  * Authors:
      7  1.1  deraadt  *          Neil M. Haller <nmh (at) thumper.bellcore.com>
      8  1.1  deraadt  *          Philip R. Karn <karn (at) chicago.qualcomm.com>
      9  1.1  deraadt  *          John S. Walden <jsw (at) thumper.bellcore.com>
     10  1.1  deraadt  *
     11  1.1  deraadt  * Modifications:
     12  1.1  deraadt  *          Scott Chasin <chasin (at) crimelab.com>
     13  1.7      mjl  *          Todd C. Miller <Todd.Miller (at) courtesan.com>
     14  1.1  deraadt  *
     15  1.1  deraadt  * Main client header
     16  1.1  deraadt  */
     17  1.1  deraadt 
     18  1.1  deraadt /* Server-side data structure for reading keys file during login */
     19  1.1  deraadt struct skey
     20  1.1  deraadt {
     21  1.1  deraadt   FILE *keyfile;
     22  1.1  deraadt   char buf[256];
     23  1.1  deraadt   char *logname;
     24  1.1  deraadt   int n;
     25  1.1  deraadt   char *seed;
     26  1.1  deraadt   char *val;
     27  1.1  deraadt   long recstart;		/* needed so reread of buffer is efficient */
     28  1.1  deraadt };
     29  1.1  deraadt 
     30  1.1  deraadt /* Client-side structure for scanning data stream for challenge */
     31  1.1  deraadt struct mc
     32  1.1  deraadt {
     33  1.1  deraadt   char buf[256];
     34  1.1  deraadt   int skip;
     35  1.1  deraadt   int cnt;
     36  1.1  deraadt };
     37  1.1  deraadt 
     38  1.7      mjl /* Maximum sequence number we allow */
     39  1.7      mjl #ifndef SKEY_MAX_SEQ
     40  1.7      mjl #define SKEY_MAX_SEQ           10000
     41  1.7      mjl #endif
     42  1.7      mjl 
     43  1.7      mjl /* Minimum secret password length (rfc2289) */
     44  1.7      mjl #ifndef SKEY_MIN_PW_LEN
     45  1.7      mjl #define SKEY_MIN_PW_LEN                10
     46  1.7      mjl #endif
     47  1.7      mjl 
     48  1.7      mjl /* Max secret password length (rfc2289 says 63 but allows more) */
     49  1.7      mjl #ifndef SKEY_MAX_PW_LEN
     50  1.7      mjl #define SKEY_MAX_PW_LEN                255
     51  1.7      mjl #endif
     52  1.7      mjl 
     53  1.7      mjl /* Max length of an S/Key seed (rfc2289) */
     54  1.7      mjl #ifndef SKEY_MAX_SEED_LEN
     55  1.7      mjl #define SKEY_MAX_SEED_LEN  	 16
     56  1.7      mjl #endif
     57  1.7      mjl 
     58  1.7      mjl /* Max length of S/Key challenge (otp-???? 9999 seed) */
     59  1.7      mjl #ifndef SKEY_MAX_CHALLENGE
     60  1.7      mjl #define SKEY_MAX_CHALLENGE 	 (11 + SKEY_MAX_HASHNAME_LEN + SKEY_MAX_SEED_LEN)
     61  1.7      mjl #endif
     62  1.7      mjl 
     63  1.7      mjl /* Max length of hash algorithm name (md4/md5/sha1/rmd160) */
     64  1.7      mjl #define SKEY_MAX_HASHNAME_LEN  6
     65  1.7      mjl 
     66  1.7      mjl /* Size of a binary key (not NULL-terminated) */
     67  1.7      mjl #define SKEY_BINKEY_SIZE		 8
     68  1.7      mjl 
     69  1.7      mjl /* Location of random file for bogus challenges */
     70  1.7      mjl #define _SKEY_RAND_FILE_PATH_  "/var/db/host.random"
     71  1.2       pk 
     72  1.7      mjl /* Prototypes */
     73  1.7      mjl void f __P ((char *));
     74  1.7      mjl int keycrunch __P ((char *, const char *, const char *));
     75  1.7      mjl char *btoe __P ((char *, const char *));
     76  1.7      mjl char *put8 __P ((char *, const char *));
     77  1.7      mjl int etob __P ((char *, const char *));
     78  1.7      mjl void rip __P ((char *));
     79  1.7      mjl int skeychallenge __P ((struct skey *, const char *, char *, size_t));
     80  1.7      mjl int skeylookup __P ((struct skey *, const char *));
     81  1.7      mjl int skeyverify __P ((struct skey *, char *));
     82  1.7      mjl void sevenbit __P ((char *));
     83  1.7      mjl void backspace __P ((char *));
     84  1.7      mjl const char *skipspace __P ((const char *));
     85  1.7      mjl char *readpass __P ((char *, int));
     86  1.7      mjl char *readskey __P ((char *, int));
     87  1.7      mjl int skey_authenticate __P ((const char *));
     88  1.7      mjl int skey_passcheck __P ((const char *, char *));
     89  1.7      mjl char *skey_keyinfo __P ((const char *));
     90  1.7      mjl int skey_haskey __P ((const char *));
     91  1.7      mjl int getskeyprompt __P ((struct skey *, char *, char *));
     92  1.7      mjl int atob8 __P((char *, const char *));
     93  1.7      mjl int btoa8 __P((char *, const char *));
     94  1.7      mjl int htoi __P((int));
     95  1.7      mjl const char *skey_get_algorithm __P((void));
     96  1.7      mjl const char *skey_set_algorithm __P((const char *));
     97  1.7      mjl int skeygetnext __P((struct skey *));
     98  1.7      mjl int skeyzero __P((struct skey *, char *));
     99