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/*
* DH crypto functions, for libreswan
*
* Copyright (C) 2007-2008 Michael C. Richardson <mcr@xelerance.com>
* Copyright (C) 2008 Antony Antony <antony@xelerance.com>
* Copyright (C) 2009 David McCullough <david_mccullough@securecomputing.com>
* Copyright (C) 2009-2012 Avesh Agarwal <avagarwa@redhat.com>
* Copyright (C) 2009-2010 Paul Wouters <paul@xelerance.com>
* Copyright (C) 2010 Tuomo Soini <tis@foobar.fi>
* Copyright (C) 2012-2013 Paul Wouters <paul@libreswan.org>
* Copyright (C) 2012 Wes Hardaker <opensource@hardakers.net>
* Copyright (C) 2013 Antony Antony <antony@phenome.org>
* Copyright (C) 2013 D. Hugh Redelmeier <hugh@mimosa.com>
* Copyright (C) 2015 Paul Wouters <pwouters@redhat.com>
* Copyright (C) 2015-2019 Andrew Cagney <cagney@gnu.org>
*
* 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 <https://www.gnu.org/licenses/gpl2.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.
*/
#ifndef crypt_dh_h
#define crypt_dh_h
#include <pk11pub.h>
#include "chunk.h"
#include "ike_spi.h"
struct dh_desc;
struct state;
struct msg_digest;
struct logger;
struct ike_sa;
struct child_sa;
/*
* The DH secret (opaque, but we all know it is implemented using
* NSS).
*/
struct dh_local_secret;
struct dh_local_secret *calc_dh_local_secret(const struct dh_desc *group, struct logger *logger);
shunk_t dh_local_secret_ke(struct dh_local_secret *local_secret);
const struct dh_desc *dh_local_secret_desc(struct dh_local_secret *local_secret);
struct dh_local_secret *dh_local_secret_addref(struct dh_local_secret *local_secret, where_t where);
void dh_local_secret_delref(struct dh_local_secret **local_secret, where_t where);
/*
* Compute dh using .st_dh_local_secret and REMOTE_KE, storing result
* in .st_dh_shared_secret.
*/
typedef stf_status (dh_shared_secret_cb)(struct state *st,
struct msg_digest *md);
extern void submit_dh_shared_secret(struct state *task_st,
struct state *dh_st,
struct msg_digest *md,
chunk_t remote_ke,
dh_shared_secret_cb *callback, where_t where);
/* internal */
struct crypt_mac calc_v1_skeyid_and_iv(struct ike_sa *ike);
void calc_v2_ike_keymat(struct state *larval_ike,
PK11SymKey *skeyseed,
const ike_spis_t *ike_spis);
#endif
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