1 /* 2 * OpenBSD S/Key (skey.h) 3 * 4 * Authors: 5 * Neil M. Haller <nmh@thumper.bellcore.com> 6 * Philip R. Karn <karn@chicago.qualcomm.com> 7 * John S. Walden <jsw@thumper.bellcore.com> 8 * Scott Chasin <chasin@crimelab.com> 9 * Todd C. Miller <Todd.Miller@courtesan.com> 10 * 11 * Main client header 12 * 13 * $OpenBSD: skey.h,v 1.19 2004/08/05 13:31:36 millert Exp $ 14 */ 15 16 #ifndef _SKEY_H_ 17 #define _SKEY_H_ 1 18 19 #include <dirent.h> 20 21 /* Server-side data structure for reading keys file during login */ 22 struct skey { 23 FILE *keyfile; 24 DIR *keydir; 25 char *logname; 26 char *seed; 27 char *val; 28 unsigned int n; 29 char buf[256]; 30 }; 31 32 /* Client-side structure for scanning data stream for challenge */ 33 struct mc { 34 int skip; 35 int cnt; 36 char buf[256]; 37 }; 38 39 /* Maximum sequence number we allow */ 40 #define SKEY_MAX_SEQ 10000 41 42 /* Minimum secret password length (rfc2289) */ 43 #define SKEY_MIN_PW_LEN 10 44 45 /* Max secret password length (rfc2289 says 63 but allows more) */ 46 #define SKEY_MAX_PW_LEN 255 47 48 /* Max length of an S/Key seed (rfc2289) */ 49 #define SKEY_MAX_SEED_LEN 16 50 51 /* Max length of S/Key challenge (otp-???? 9999 seed) */ 52 #define SKEY_MAX_CHALLENGE (11 + SKEY_MAX_HASHNAME_LEN + SKEY_MAX_SEED_LEN) 53 54 /* Max length of hash algorithm name (md4/md5/sha1/rmd160) */ 55 #define SKEY_MAX_HASHNAME_LEN 6 56 57 /* Size of a binary key (not NULL-terminated) */ 58 #define SKEY_BINKEY_SIZE 8 59 60 /* Location of random file for bogus challenges */ 61 #define _SKEY_RAND_FILE_PATH_ "/var/db/host.random" 62 63 /* Directory for S/Key per-user files */ 64 #define _PATH_SKEYDIR "/etc/skey" 65 66 __BEGIN_DECLS 67 void f(char *); 68 int keycrunch(char *, char *, char *); 69 char *btoe(char *, char *); 70 char *put8(char *, char *); 71 int etob(char *, char *); 72 void rip(char *); 73 int skeychallenge(struct skey *, char *, char *); 74 int skeychallenge2(int, struct skey *, char *, char *); 75 int skeylookup(struct skey *, char *); 76 int skeyverify(struct skey *, char *); 77 int skeyzero(struct skey *); 78 void sevenbit(char *); 79 void backspace(char *); 80 char *skipspace(char *); 81 char *readpass(char *, int); 82 char *readskey(char *, int); 83 int skey_authenticate(char *); 84 int skey_passcheck(char *, char *); 85 char *skey_keyinfo(char *); 86 int skey_haskey(char *); 87 int atob8(char *, char *); 88 int btoa8(char *, char *); 89 int htoi(int); 90 const char *skey_get_algorithm(void); 91 char *skey_set_algorithm(char *); 92 int skeygetnext(struct skey *); 93 int skey_unlock(struct skey *); 94 __END_DECLS 95 96 #endif /* _SKEY_H_ */ 97