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/*
* OpenBSD S/Key (skey.h)
*
* Authors:
* Neil M. Haller <nmh@thumper.bellcore.com>
* Philip R. Karn <karn@chicago.qualcomm.com>
* John S. Walden <jsw@thumper.bellcore.com>
* Scott Chasin <chasin@crimelab.com>
* Todd C. Miller <Todd.Miller@courtesan.com>
*
* Main client header
*
* $OpenBSD: skey.h,v 1.15 2001/06/23 21:09:11 millert Exp $
*/
#ifndef _SKEY_H_
#define _SKEY_H_ 1
#include <sys/cdefs.h>
/* Server-side data structure for reading keys file during login */
struct skey {
FILE *keyfile;
char *logname;
char *seed;
char *val;
int n;
int len;
long recstart; /* needed so reread of buffer is efficient */
char buf[256];
};
/* Client-side structure for scanning data stream for challenge */
struct mc {
int skip;
int cnt;
char buf[256];
};
/* Maximum sequence number we allow */
#define SKEY_MAX_SEQ 10000
/* Minimum secret password length (rfc2289) */
#define SKEY_MIN_PW_LEN 10
/* Max secret password length (rfc2289 says 63 but allows more) */
#define SKEY_MAX_PW_LEN 255
/* Max length of an S/Key seed (rfc2289) */
#define SKEY_MAX_SEED_LEN 16
/* Max length of S/Key challenge (otp-???? 9999 seed) */
#define SKEY_MAX_CHALLENGE (11 + SKEY_MAX_HASHNAME_LEN + SKEY_MAX_SEED_LEN)
/* Max length of hash algorithm name (md4/md5/sha1/rmd160) */
#define SKEY_MAX_HASHNAME_LEN 6
/* Size of a binary key (not NULL-terminated) */
#define SKEY_BINKEY_SIZE 8
/* Location of random file for bogus challenges */
#define _SKEY_RAND_FILE_PATH_ "/var/db/host.random"
__BEGIN_DECLS
void f __P((char *));
int keycrunch __P((char *, char *, char *));
char *btoe __P((char *, char *));
char *put8 __P((char *, char *));
int etob __P((char *, char *));
void rip __P((char *));
int skeychallenge __P((struct skey *, char *, char *));
int skeylookup __P((struct skey *, char *));
int skeyverify __P((struct skey *, char *));
int skeyzero __P((struct skey *, char *));
void sevenbit __P((char *));
void backspace __P((char *));
char *skipspace __P((char *));
char *readpass __P((char *, int));
char *readskey __P((char *, int));
int skey_authenticate __P((char *));
int skey_passcheck __P((char *, char *));
char *skey_keyinfo __P((char *));
int skey_haskey __P((char *));
int atob8 __P((char *, char *));
int btoa8 __P((char *, char *));
int htoi __P((int));
const char *skey_get_algorithm __P((void));
char *skey_set_algorithm __P((char *));
int skeygetnext __P((struct skey *));
int skey_unlock __P((struct skey *));
__END_DECLS
#endif /* _SKEY_H_ */
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