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 */ 19 struct skey 20 { 21 FILE *keyfile; 22 char buf[256]; 23 char *logname; 24 int n; 25 char *seed; 26 char *val; 27 long recstart; /* needed so reread of buffer is efficient */ 28 }; 29 30 /* Client-side structure for scanning data stream for challenge */ 31 struct mc 32 { 33 char buf[256]; 34 int skip; 35 int cnt; 36 }; 37 38 /* Maximum sequence number we allow */ 39 #ifndef SKEY_MAX_SEQ 40 #define SKEY_MAX_SEQ 10000 41 #endif 42 43 /* Minimum secret password length (rfc2289) */ 44 #ifndef SKEY_MIN_PW_LEN 45 #define SKEY_MIN_PW_LEN 10 46 #endif 47 48 /* Max secret password length (rfc2289 says 63 but allows more) */ 49 #ifndef SKEY_MAX_PW_LEN 50 #define SKEY_MAX_PW_LEN 255 51 #endif 52 53 /* Max length of an S/Key seed (rfc2289) */ 54 #ifndef SKEY_MAX_SEED_LEN 55 #define SKEY_MAX_SEED_LEN 16 56 #endif 57 58 /* Max length of S/Key challenge (otp-???? 9999 seed) */ 59 #ifndef SKEY_MAX_CHALLENGE 60 #define SKEY_MAX_CHALLENGE (11 + SKEY_MAX_HASHNAME_LEN + SKEY_MAX_SEED_LEN) 61 #endif 62 63 /* Max length of hash algorithm name (md4/md5/sha1/rmd160) */ 64 #define SKEY_MAX_HASHNAME_LEN 6 65 66 /* Size of a binary key (not NULL-terminated) */ 67 #define SKEY_BINKEY_SIZE 8 68 69 /* Location of random file for bogus challenges */ 70 #define _SKEY_RAND_FILE_PATH_ "/var/db/host.random" 71 72 /* Prototypes */ 73 void f __P ((char *)); 74 int keycrunch __P ((char *, const char *, const char *)); 75 char *btoe __P ((char *, const char *)); 76 char *put8 __P ((char *, const char *)); 77 int etob __P ((char *, const char *)); 78 void rip __P ((char *)); 79 int skeychallenge __P ((struct skey *, const char *, char *, size_t)); 80 int skeylookup __P ((struct skey *, const char *)); 81 int skeyverify __P ((struct skey *, char *)); 82 void sevenbit __P ((char *)); 83 void backspace __P ((char *)); 84 const char *skipspace __P ((const char *)); 85 char *readpass __P ((char *, int)); 86 char *readskey __P ((char *, int)); 87 int skey_authenticate __P ((const char *)); 88 int skey_passcheck __P ((const char *, char *)); 89 const char *skey_keyinfo __P ((const char *)); 90 int skey_haskey __P ((const char *)); 91 int getskeyprompt __P ((struct skey *, char *, char *)); 92 int atob8 __P((char *, const char *)); 93 int btoa8 __P((char *, const char *)); 94 int htoi __P((int)); 95 const char *skey_get_algorithm __P((void)); 96 const char *skey_set_algorithm __P((const char *)); 97 int skeygetnext __P((struct skey *)); 98 int skeyzero __P((struct skey *, char *)); 99