/* $NetBSD: params.h,v 1.3 2002/12/04 05:02:29 elric Exp $ */

/*-
 * Copyright (c) 2002 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Roland C. Dowdeswell.
 *
 * 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 the NetBSD
 *        Foundation, Inc. and its contributors.
 * 4. Neither the name of The NetBSD Foundation nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``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 FOUNDATION OR CONTRIBUTORS
 * 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.
 */

struct params {
	char		*alg;
	char		*ivmeth;
	u_int8_t	*key;
	int		 keylen;
	int		 bsize;
	int		 keygen_method;
	u_int8_t	*keygen_salt;
	int		 keygen_saltlen;
	int		 keygen_iterations;
	int		 verify_method;
	u_int8_t	*key_hash;
	int		 key_hashlen;
	u_int8_t	*xor_key;
	int		 xor_keylen;
};

/* key generation methods */

#define KEYGEN_UNKNOWN		0x0
#define KEYGEN_RANDOMKEY	0x1
#define KEYGEN_PKCS5_PBKDF2	0x2

/* verification methods */

#define VERIFY_UNKNOWN		0x0
#define VERIFY_NONE		0x1
#define VERIFY_DISKLABEL	0x2

void	params_init(struct params *);
void	params_free(struct params *);

int	params_filldefaults(struct params *);
int	params_changed(const struct params *);

int	params_fget(struct params *, FILE *);
int	params_fput(struct params *, FILE *);

int	params_cget(struct params *, const char *);


/* interface to the structure */

int	params_setalgorithm(struct params *, const char *);
int	params_setivmeth(struct params *, const char *);
int	params_setkeylen(struct params *, int);
int	params_setbsize(struct params *, int);
int	params_setkeygen_method(struct params *, int);
int	params_setkeygen_method_str(struct params *, const char *);
int	params_setkeygen_salt(struct params *, const char *, int);
int	params_setkeygen_salt_b64(struct params *, const char *);
int	params_setkeygen_iterations(struct params *, int);
int	params_setverify_method(struct params *, int);
int	params_setverify_method_str(struct params *, const char *);
int	params_setxor_key(struct params *, const char *, int);
int	params_setxor_key_b64(struct params *, const char *);
int	params_setkey_hash(struct params *, const char *, int);
int	params_setkey_hash_b64(struct params *, const char *);