2023-04-30 01:15:27 +00:00
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/*
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* OpenBSD S/Key (skey.h)
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*
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* Authors:
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* Neil M. Haller <nmh@thumper.bellcore.com>
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* Philip R. Karn <karn@chicago.qualcomm.com>
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* John S. Walden <jsw@thumper.bellcore.com>
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* Scott Chasin <chasin@crimelab.com>
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* Todd C. Miller <millert@openbsd.org>
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*
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* Main client header
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*
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2024-05-22 02:43:18 +00:00
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* $OpenBSD: skey.h,v 1.23 2024/05/21 11:13:08 jsg Exp $
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2023-04-30 01:15:27 +00:00
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*/
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#ifndef _SKEY_H_
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#define _SKEY_H_ 1
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#include <dirent.h>
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/* Server-side data structure for reading keys file during login */
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struct skey {
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FILE *keyfile;
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DIR *keydir;
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char *logname;
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char *seed;
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char *val;
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unsigned int n;
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char buf[256];
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};
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/* Client-side structure for scanning data stream for challenge */
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struct mc {
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int skip;
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int cnt;
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char buf[256];
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};
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/* Maximum sequence number we allow */
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#define SKEY_MAX_SEQ 10000
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/* Minimum secret password length (rfc2289) */
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#define SKEY_MIN_PW_LEN 10
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/* Max secret password length (rfc2289 says 63 but allows more) */
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#define SKEY_MAX_PW_LEN 255
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/* Max length of an S/Key seed (rfc2289) */
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#define SKEY_MAX_SEED_LEN 16
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/* Max length of S/Key challenge (otp-???? 9999 seed) */
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#define SKEY_MAX_CHALLENGE (11 + SKEY_MAX_HASHNAME_LEN + SKEY_MAX_SEED_LEN)
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/* Max length of hash algorithm name (md5/sha1/rmd160) */
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#define SKEY_MAX_HASHNAME_LEN 6
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/* Size of a binary key (not NULL-terminated) */
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#define SKEY_BINKEY_SIZE 8
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/* Directory for S/Key per-user files */
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#define _PATH_SKEYDIR "/etc/skey"
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__BEGIN_DECLS
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void f(char *);
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int keycrunch(char *, char *, char *);
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char *btoe(char *, char *);
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char *put8(char *, char *);
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int etob(char *, char *);
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void rip(char *);
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int skeychallenge(struct skey *, char *, char *);
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int skeychallenge2(int, struct skey *, char *, char *);
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int skeylookup(struct skey *, char *);
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int skeyverify(struct skey *, char *);
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void sevenbit(char *);
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void backspace(char *);
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char *skipspace(char *);
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char *readpass(char *, int);
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char *readskey(char *, int);
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int skey_authenticate(char *);
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int skey_passcheck(char *, char *);
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char *skey_keyinfo(char *);
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int skey_haskey(char *);
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int atob8(char *, char *);
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int btoa8(char *, char *);
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int htoi(int);
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const char *skey_get_algorithm(void);
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char *skey_set_algorithm(char *);
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int skeygetnext(struct skey *);
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int skey_unlock(struct skey *);
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__END_DECLS
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#endif /* _SKEY_H_ */
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