lib/libskey/skey.h

   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   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 */
  30 struct 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 */
  71 void f(char *);
  72 int keycrunch(char *, const char *, const char *);
  73 char *btoe(char *, const char *);
  74 char *put8(char *, const char *);
  75 int etob(char *, const char *);
  76 void rip(char *);
  77 int skeychallenge(struct skey *, const char *, char *, size_t);
  78 int skeylookup(struct skey *, const char *);
  79 int skeyverify(struct skey *, char *);
  80 void sevenbit(char *);
  81 void backspace(char *);
  82 const char *skipspace(const char *);
  83 char *readpass(char *, int);
  84 char *readskey(char *, int);
  85 int skey_authenticate(const char *);
  86 int skey_passcheck(const char *, char *);
  87 const char *skey_keyinfo(const char *);
  88 int skey_haskey(const char *);
  89 int getskeyprompt(struct skey *, char *, char *);
  90 int atob8(char *, const char *);
  91 int btoa8(char *, const char *);
  92 int htoi(int);
  93 const char *skey_get_algorithm(void);
  94 const char *skey_set_algorithm(const char *);
  95 int skeygetnext(struct skey *);
  96 int skeyzero(struct skey *, char *);