1/* 2 * Copyright (c) 1995 - 2000 Kungliga Tekniska Högskolan 3 * (Royal Institute of Technology, Stockholm, Sweden). 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * 3. Neither the name of the Institute nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34/* $Id$ */ 35 36#ifndef _OTP_H 37#define _OTP_H 38 39#include <stdlib.h> 40#include <time.h> 41 42enum {OTPKEYSIZE = 8}; 43 44typedef unsigned char OtpKey[OTPKEYSIZE]; 45 46#define OTP_MIN_PASSPHRASE 10 47#define OTP_MAX_PASSPHRASE 63 48 49#define OTP_USER_TIMEOUT 120 50#define OTP_DB_TIMEOUT 60 51 52#define OTP_HEXPREFIX "hex:" 53#define OTP_WORDPREFIX "word:" 54 55typedef enum { OTP_ALG_MD4, OTP_ALG_MD5, OTP_ALG_SHA } OtpAlgID; 56 57#define OTP_ALG_DEFAULT "md5" 58 59typedef struct { 60 OtpAlgID id; 61 char *name; 62 int hashsize; 63 int (*hash)(const char *, size_t, unsigned char *); 64 int (*init)(OtpKey, const char *, const char *); 65 int (*next)(OtpKey); 66} OtpAlgorithm; 67 68typedef struct { 69 char *user; 70 OtpAlgorithm *alg; 71 unsigned n; 72 char seed[17]; 73 OtpKey key; 74 int challengep; 75 time_t lock_time; 76 char *err; 77} OtpContext; 78 79OtpAlgorithm *otp_find_alg (char *); 80void otp_print_stddict (OtpKey, char *, size_t); 81void otp_print_hex (OtpKey, char *, size_t); 82void otp_print_stddict_extended (OtpKey, char *, size_t); 83void otp_print_hex_extended (OtpKey, char *, size_t); 84unsigned otp_checksum (OtpKey); 85int otp_parse_hex (OtpKey, const char *); 86int otp_parse_stddict (OtpKey, const char *); 87int otp_parse_altdict (OtpKey, const char *, OtpAlgorithm *); 88int otp_parse (OtpKey, const char *, OtpAlgorithm *); 89int otp_challenge (OtpContext *, char *, char *, size_t); 90int otp_verify_user (OtpContext *, const char *); 91int otp_verify_user_1 (OtpContext *, const char *); 92char *otp_error (OtpContext *); 93 94void *otp_db_open (void); 95void otp_db_close (void *); 96int otp_put (void *, OtpContext *); 97int otp_get (void *, OtpContext *); 98int otp_simple_get (void *, OtpContext *); 99int otp_delete (void *, OtpContext *); 100 101#endif /* _OTP_H */ 102