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/* $OpenBSD: modulus.h,v 1.5 2002/06/09 08:13:08 todd Exp $ */
/*
* Copyright 1997-2000 Niels Provos <provos@citi.umich.edu>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Niels Provos.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* modulus.h:
* modulus handling functions
*/
#ifndef _MODULUS_H_
#define _MODULUS_H_
#include <sys/queue.h>
/* Possible values for the status field */
#define MOD_UNUSED 0
#define MOD_COMPUTING 1
#define MOD_PRIME 2
#define MOD_NOTPRIME 3
#define MOD_PRIME_ITER 5 /* Do each cycle */
#define MOD_PRIME_MAX 20 /* > => Is prime */
#define MOD_PRIME_TIME 4 /* max time in mod_check_prime */
#define MOD_TIMEOUT 120
struct moduli_cache {
TAILQ_ENTRY(moduli_cache) next; /* Link to next member */
BIGNUM *modulus; /* Modulus for computation */
BIGNUM *generator; /* Used generator */
BIGNUM *private_value; /* Our own private value */
u_int8_t *exchangevalue; /* Our own exchange value */
size_t exchangesize;
int iterations; /* primality check iterations */
int status; /* Status of the modulus */
time_t lifetime; /* For modulus + exchange value */
};
/* Prototypes */
void mod_init(void);
int mod_insert(struct moduli_cache *ob);
int mod_unlink(struct moduli_cache *ob);
struct moduli_cache *mod_new_modgen(BIGNUM *, BIGNUM *);
struct moduli_cache *mod_new_modulus(BIGNUM *);
int mod_value_reset(struct moduli_cache *ob);
struct moduli_cache *mod_find_modgen(BIGNUM *, BIGNUM *);
struct moduli_cache *mod_find_modgen_next(struct moduli_cache *, BIGNUM *,
BIGNUM *);
struct moduli_cache *mod_find_modulus(BIGNUM *);
struct moduli_cache *mod_find_generator(BIGNUM *);
struct moduli_cache *mod_find_modulus_next(struct moduli_cache *, BIGNUM *);
struct moduli_cache *mod_find_generator_next(struct moduli_cache *, BIGNUM *);
void mod_check_prime(int iter, int tm);
void mod_cleanup(void);
#endif
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