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/* crypto interfaces
* Copyright (C) 1998, 1999 D. Hugh Redelmeier.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*/
#include <crypto/crypters/crypter.h>
#include <crypto/signers/signer.h>
#include <crypto/hashers/hasher.h>
#include <crypto/prfs/prf.h>
#include <credentials/keys/public_key.h>
#include "ike_alg.h"
extern void init_crypto(void);
extern void free_crypto(void);
extern const struct dh_desc unset_group; /* magic signifier */
/* unification of cryptographic encoding/decoding algorithms
* The IV is taken from and returned to st->st_new_iv.
* This allows the old IV to be retained.
* Use update_iv to commit to the new IV (for example, once a packet has
* been validated).
*/
#define MAX_OAKLEY_KEY_LEN0 (3 * DES_CBC_BLOCK_SIZE)
#define MAX_OAKLEY_KEY_LEN (256/BITS_PER_BYTE)
struct state; /* forward declaration, dammit */
#define update_iv(st) memcpy((st)->st_iv, (st)->st_new_iv \
, (st)->st_iv_len = (st)->st_new_iv_len)
#define set_ph1_iv(st, iv) \
passert((st)->st_ph1_iv_len <= sizeof((st)->st_ph1_iv)); \
memcpy((st)->st_ph1_iv, (iv), (st)->st_ph1_iv_len);
/* unification of cryptographic hashing mechanisms */
extern encryption_algorithm_t oakley_to_encryption_algorithm(int alg);
extern hash_algorithm_t oakley_to_hash_algorithm(int alg);
extern pseudo_random_function_t oakley_to_prf(int alg);
extern signature_scheme_t oakley_to_signature_scheme(int method);
extern int oakley_from_encryption_algorithm(encryption_algorithm_t alg);
extern int oakley_from_integrity_algorithm(integrity_algorithm_t alg);
extern int esp_from_encryption_algorithm(encryption_algorithm_t alg);
extern int esp_from_integrity_algorithm(integrity_algorithm_t alg);
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