1/* $NetBSD: skey.h,v 1.8 2000/07/28 16:35:11 thorpej Exp $ */ 2 3/* 4 * S/KEY v1.1b (skey.h) 5 * 6 * Authors: 7 * Neil M. Haller <nmh@thumper.bellcore.com> 8 * Philip R. Karn <karn@chicago.qualcomm.com> 9 * John S. Walden <jsw@thumper.bellcore.com> 10 * 11 * Modifications: 12 * Scott Chasin <chasin@crimelab.com> 13 * Todd C. Miller <Todd.Miller@courtesan.com> 14 * 15 * Main client header 16 */ 17 18/* Server-side data structure for reading keys file during login */ 19struct skey { 20 FILE *keyfile; 21 char buf[256]; 22 char *logname; 23 int n; 24 char *seed; 25 char *val; 26 long recstart; /* needed so reread of buffer is efficient */ 27}; 28 29/* Client-side structure for scanning data stream for challenge */ 30struct mc { 31 char buf[256]; 32 int skip; 33 int cnt; 34}; 35 36/* Maximum sequence number we allow */ 37#ifndef SKEY_MAX_SEQ 38#define SKEY_MAX_SEQ 10000 39#endif 40 41/* Minimum secret password length (rfc2289) */ 42#ifndef SKEY_MIN_PW_LEN 43#define SKEY_MIN_PW_LEN 10 44#endif 45 46/* Max secret password length (rfc2289 says 63 but allows more) */ 47#ifndef SKEY_MAX_PW_LEN 48#define SKEY_MAX_PW_LEN 255 49#endif 50 51/* Max length of an S/Key seed (rfc2289) */ 52#ifndef SKEY_MAX_SEED_LEN 53#define SKEY_MAX_SEED_LEN 16 54#endif 55 56/* Max length of S/Key challenge (otp-???? 9999 seed) */ 57#ifndef SKEY_MAX_CHALLENGE 58#define SKEY_MAX_CHALLENGE (11 + SKEY_MAX_HASHNAME_LEN + SKEY_MAX_SEED_LEN) 59#endif 60 61/* Max length of hash algorithm name (md4/md5/sha1/rmd160) */ 62#define SKEY_MAX_HASHNAME_LEN 6 63 64/* Size of a binary key (not NULL-terminated) */ 65#define SKEY_BINKEY_SIZE 8 66 67/* Location of random file for bogus challenges */ 68#define _SKEY_RAND_FILE_PATH_ "/var/db/host.random" 69 70/* Prototypes */ 71void f(char *); 72int keycrunch(char *, const char *, const char *); 73char *btoe(char *, const char *); 74char *put8(char *, const char *); 75int etob(char *, const char *); 76void rip(char *); 77int skeychallenge(struct skey *, const char *, char *, size_t); 78int skeylookup(struct skey *, const char *); 79int skeyverify(struct skey *, char *); 80void sevenbit(char *); 81void backspace(char *); 82const char *skipspace(const char *); 83char *readpass(char *, int); 84char *readskey(char *, int); 85int skey_authenticate(const char *); 86int skey_passcheck(const char *, char *); 87const char *skey_keyinfo(const char *); 88int skey_haskey(const char *); 89int getskeyprompt(struct skey *, char *, char *); 90int atob8(char *, const char *); 91int btoa8(char *, const char *); 92int htoi(int); 93const char *skey_get_algorithm(void); 94const char *skey_set_algorithm(const char *); 95int skeygetnext(struct skey *); 96int skeyzero(struct skey *, char *); 97