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/* IKEv2 authentication, for libreswan
*
* Copyright (C) 2019 Andrew Cagney
*
* 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.
*/
#ifndef IKEV2_SIGHASH_H
#define IKEV2_SIGHASH_H
#include <stdbool.h>
#include "chunk.h"
struct state;
struct connection;
struct ike_sa;
struct hash_signature;
struct msg_digest;
struct hash_desc;
struct logger;
struct secret_stuff;
enum perspective;
struct pubkey_signer;
struct pbs_out;
struct pbs_in;
struct crypt_mac v2_sha1_hash(const struct crypt_mac *hash);
struct crypt_mac v2_calculate_sighash(const struct ike_sa *ike,
const struct crypt_mac *idhash,
const struct hash_desc *hasher,
enum perspective from_the_perspective_of);
const struct hash_desc *v2_auth_negotiated_signature_hash(struct ike_sa *ike);
shunk_t authby_asn1_hash_blob(const struct hash_desc *hash_algo,
enum keyword_auth authby);
/*
* The local end's proof-of-identity sent to the remote peer.
*/
enum keyword_auth local_v2_auth(struct ike_sa *ike);
enum ikev2_auth_method local_v2AUTH_method(struct ike_sa *ike, enum keyword_auth auth);
bool emit_local_v2AUTH(struct ike_sa *ike,
const struct hash_signature *auth_sig,
struct pbs_out *outpbs);
typedef stf_status (v2_auth_signature_cb)(struct ike_sa *ike,
struct msg_digest *md,
const struct hash_signature *sighash_sig);
bool submit_v2_auth_signature(struct ike_sa *ike,
struct msg_digest *md,
const struct crypt_mac *sighash,
const struct hash_desc *hash_algo,
const struct pubkey_signer *signer,
v2_auth_signature_cb *cb,
where_t where);
diag_t verify_v2AUTH_and_log(enum ikev2_auth_method recv_auth,
struct ike_sa *ike,
const struct crypt_mac *idhash_in,
struct pbs_in *signature_pbs,
const enum keyword_auth that_authby);
stf_status submit_v2AUTH_generate_responder_signature(struct ike_sa *ike, struct msg_digest *md,
v2_auth_signature_cb auth_cb);
stf_status submit_v2AUTH_generate_initiator_signature(struct ike_sa *ike, struct msg_digest *md,
v2_auth_signature_cb *cb);
void v2_IKE_AUTH_responder_id_payload(struct ike_sa *ike);
void v2_IKE_AUTH_initiator_id_payload(struct ike_sa *ike);
struct crypt_mac v2_remote_id_hash(const struct ike_sa *ike, const char *why,
const struct msg_digest *md);
lset_t proposed_v2AUTH(struct ike_sa *ike, struct msg_digest *md);
#endif
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