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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 1.19 2004/08/05 13:31:36 millert Exp $
*/
#ifndef _SKEY_H_
#define _SKEY_H_ 1
#include <dirent.h>
/* Server-side data structure for reading keys file during login */
struct skey {
FILE *keyfile;
DIR *keydir;
char *logname;
char *seed;
char *val;
unsigned int n;
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"
/* Directory for S/Key per-user files */
#define _PATH_SKEYDIR "/etc/skey"
__BEGIN_DECLS
void f(char *);
int keycrunch(char *, char *, char *);
char *btoe(char *, char *);
char *put8(char *, char *);
int etob(char *, char *);
void rip(char *);
int skeychallenge(struct skey *, char *, char *);
int skeychallenge2(int, struct skey *, char *, char *);
int skeylookup(struct skey *, char *);
int skeyverify(struct skey *, char *);
int skeyzero(struct skey *);
void sevenbit(char *);
void backspace(char *);
char *skipspace(char *);
char *readpass(char *, int);
char *readskey(char *, int);
int skey_authenticate(char *);
int skey_passcheck(char *, char *);
char *skey_keyinfo(char *);
int skey_haskey(char *);
int atob8(char *, char *);
int btoa8(char *, char *);
int htoi(int);
const char *skey_get_algorithm(void);
char *skey_set_algorithm(char *);
int skeygetnext(struct skey *);
int skey_unlock(struct skey *);
__END_DECLS
#endif /* _SKEY_H_ */
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