102 lines
3.4 KiB
C
102 lines
3.4 KiB
C
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/*
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* Copyright (c) 1995 - 2000 Kungliga Tekniska H<EFBFBD>gskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/* $Id: otp.h,v 1.19 2000/07/12 00:26:43 assar Exp $ */
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#ifndef _OTP_H
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#define _OTP_H
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#include <stdlib.h>
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#include <time.h>
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enum {OTPKEYSIZE = 8};
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typedef unsigned char OtpKey[OTPKEYSIZE];
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#define OTP_MIN_PASSPHRASE 10
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#define OTP_MAX_PASSPHRASE 63
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#define OTP_USER_TIMEOUT 120
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#define OTP_DB_TIMEOUT 60
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#define OTP_HEXPREFIX "hex:"
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#define OTP_WORDPREFIX "word:"
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typedef enum { OTP_ALG_MD4, OTP_ALG_MD5, OTP_ALG_SHA } OtpAlgID;
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#define OTP_ALG_DEFAULT "md5"
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typedef struct {
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OtpAlgID id;
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char *name;
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int hashsize;
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int (*hash)(const char *s, size_t len, unsigned char *res);
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int (*init)(OtpKey key, const char *pwd, const char *seed);
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int (*next)(OtpKey key);
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} OtpAlgorithm;
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typedef struct {
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char *user;
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OtpAlgorithm *alg;
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unsigned n;
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char seed[17];
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OtpKey key;
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int challengep;
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time_t lock_time;
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char *err;
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} OtpContext;
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OtpAlgorithm *otp_find_alg (char *name);
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void otp_print_stddict (OtpKey key, char *str, size_t sz);
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void otp_print_hex (OtpKey key, char *str, size_t sz);
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void otp_print_stddict_extended (OtpKey key, char *str, size_t sz);
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void otp_print_hex_extended (OtpKey key, char *str, size_t sz);
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unsigned otp_checksum (OtpKey key);
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int otp_parse_hex (OtpKey key, const char *);
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int otp_parse_stddict (OtpKey key, const char *);
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int otp_parse_altdict (OtpKey key, const char *, OtpAlgorithm *);
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int otp_parse (OtpKey key, const char *, OtpAlgorithm *);
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int otp_challenge (OtpContext *ctx, char *user, char *str, size_t len);
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int otp_verify_user (OtpContext *ctx, const char *passwd);
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int otp_verify_user_1 (OtpContext *ctx, const char *passwd);
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char *otp_error (OtpContext *ctx);
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void *otp_db_open (void);
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void otp_db_close (void *);
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int otp_put (void *, OtpContext *ctx);
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int otp_get (void *, OtpContext *ctx);
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int otp_simple_get (void *, OtpContext *ctx);
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int otp_delete (void *, OtpContext *ctx);
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#endif /* _OTP_H */
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