Implemented a common Phase 1 helper class to use by main and aggressive modes
This commit is contained in:
Martin Willi
parent
44dcd5944a
commit
c29a89b80d
|
|
@ -104,6 +104,7 @@ sa/ikev1/task_manager_v1.c sa/ikev1/task_manager_v1.h \
|
|||
sa/ikev1/authenticators/psk_v1_authenticator.c sa/ikev1/authenticators/psk_v1_authenticator.h \
|
||||
sa/ikev1/authenticators/pubkey_v1_authenticator.c sa/ikev1/authenticators/pubkey_v1_authenticator.h \
|
||||
sa/ikev1/authenticators/hybrid_authenticator.c sa/ikev1/authenticators/hybrid_authenticator.h \
|
||||
sa/ikev1/phase1.c sa/ikev1/phase1.h \
|
||||
sa/ikev1/tasks/main_mode.c sa/ikev1/tasks/main_mode.h \
|
||||
sa/ikev1/tasks/informational.c sa/ikev1/tasks/informational.h \
|
||||
sa/ikev1/tasks/isakmp_cert_pre.c sa/ikev1/tasks/isakmp_cert_pre.h \
|
||||
|
|
|
|||
|
|
@ -0,0 +1,605 @@
|
|||
/*
|
||||
* Copyright (C) 2012 Martin Willi
|
||||
* Copyright (C) 2012 revosec AG
|
||||
*
|
||||
* 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 "phase1.h"
|
||||
|
||||
#include <daemon.h>
|
||||
#include <sa/ikev1/keymat_v1.h>
|
||||
#include <encoding/payloads/ke_payload.h>
|
||||
#include <encoding/payloads/nonce_payload.h>
|
||||
|
||||
typedef struct private_phase1_t private_phase1_t;
|
||||
|
||||
/**
|
||||
* Private data of an phase1_t object.
|
||||
*/
|
||||
struct private_phase1_t {
|
||||
|
||||
/**
|
||||
* Public phase1_t interface.
|
||||
*/
|
||||
phase1_t public;
|
||||
|
||||
/**
|
||||
* IKE_SA we negotiate
|
||||
*/
|
||||
ike_sa_t *ike_sa;
|
||||
|
||||
/**
|
||||
* Acting as initiator
|
||||
*/
|
||||
bool initiator;
|
||||
|
||||
/**
|
||||
* Extracted SA payload bytes
|
||||
*/
|
||||
chunk_t sa_payload;
|
||||
|
||||
/**
|
||||
* DH exchange
|
||||
*/
|
||||
diffie_hellman_t *dh;
|
||||
|
||||
/**
|
||||
* Keymat derivation (from SA)
|
||||
*/
|
||||
keymat_v1_t *keymat;
|
||||
|
||||
/**
|
||||
* Received public DH value from peer
|
||||
*/
|
||||
chunk_t dh_value;
|
||||
|
||||
/**
|
||||
* Initiators nonce
|
||||
*/
|
||||
chunk_t nonce_i;
|
||||
|
||||
/**
|
||||
* Responder nonce
|
||||
*/
|
||||
chunk_t nonce_r;
|
||||
};
|
||||
|
||||
/**
|
||||
* Get the first authentcation config from peer config
|
||||
*/
|
||||
static auth_cfg_t *get_auth_cfg(peer_cfg_t *peer_cfg, bool local)
|
||||
{
|
||||
enumerator_t *enumerator;
|
||||
auth_cfg_t *cfg = NULL;
|
||||
|
||||
enumerator = peer_cfg->create_auth_cfg_enumerator(peer_cfg, local);
|
||||
enumerator->enumerate(enumerator, &cfg);
|
||||
enumerator->destroy(enumerator);
|
||||
return cfg;
|
||||
}
|
||||
|
||||
/**
|
||||
* Lookup a shared secret for this IKE_SA
|
||||
*/
|
||||
static shared_key_t *lookup_shared_key(private_phase1_t *this,
|
||||
peer_cfg_t *peer_cfg)
|
||||
{
|
||||
host_t *me, *other;
|
||||
identification_t *my_id, *other_id;
|
||||
shared_key_t *shared_key = NULL;
|
||||
auth_cfg_t *my_auth, *other_auth;
|
||||
enumerator_t *enumerator;
|
||||
|
||||
/* try to get a PSK for IP addresses */
|
||||
me = this->ike_sa->get_my_host(this->ike_sa);
|
||||
other = this->ike_sa->get_other_host(this->ike_sa);
|
||||
my_id = identification_create_from_sockaddr(me->get_sockaddr(me));
|
||||
other_id = identification_create_from_sockaddr(other->get_sockaddr(other));
|
||||
if (my_id && other_id)
|
||||
{
|
||||
shared_key = lib->credmgr->get_shared(lib->credmgr, SHARED_IKE,
|
||||
my_id, other_id);
|
||||
}
|
||||
DESTROY_IF(my_id);
|
||||
DESTROY_IF(other_id);
|
||||
if (shared_key)
|
||||
{
|
||||
return shared_key;
|
||||
}
|
||||
|
||||
if (peer_cfg)
|
||||
{ /* as initiator, use identities from configuraiton */
|
||||
my_auth = get_auth_cfg(peer_cfg, TRUE);
|
||||
other_auth = get_auth_cfg(peer_cfg, FALSE);
|
||||
if (my_auth && other_auth)
|
||||
{
|
||||
my_id = my_auth->get(my_auth, AUTH_RULE_IDENTITY);
|
||||
other_id = other_auth->get(other_auth, AUTH_RULE_IDENTITY);
|
||||
if (my_id && other_id)
|
||||
{
|
||||
shared_key = lib->credmgr->get_shared(lib->credmgr, SHARED_IKE,
|
||||
my_id, other_id);
|
||||
if (!shared_key)
|
||||
{
|
||||
DBG1(DBG_IKE, "no shared key found for '%Y'[%H] - '%Y'[%H]",
|
||||
my_id, me, other_id, other);
|
||||
}
|
||||
}
|
||||
}
|
||||
return shared_key;
|
||||
}
|
||||
/* as responder, we try to find a config by IP */
|
||||
enumerator = charon->backends->create_peer_cfg_enumerator(charon->backends,
|
||||
me, other, NULL, NULL, IKEV1);
|
||||
while (enumerator->enumerate(enumerator, &peer_cfg))
|
||||
{
|
||||
my_auth = get_auth_cfg(peer_cfg, TRUE);
|
||||
other_auth = get_auth_cfg(peer_cfg, FALSE);
|
||||
if (my_auth && other_auth)
|
||||
{
|
||||
my_id = my_auth->get(my_auth, AUTH_RULE_IDENTITY);
|
||||
other_id = other_auth->get(other_auth, AUTH_RULE_IDENTITY);
|
||||
if (my_id && other_id)
|
||||
{
|
||||
shared_key = lib->credmgr->get_shared(lib->credmgr, SHARED_IKE,
|
||||
my_id, other_id);
|
||||
if (shared_key)
|
||||
{
|
||||
break;
|
||||
}
|
||||
else
|
||||
{
|
||||
DBG1(DBG_IKE, "no shared key found for '%Y'[%H] - '%Y'[%H]",
|
||||
my_id, me, other_id, other);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
enumerator->destroy(enumerator);
|
||||
if (!peer_cfg)
|
||||
{
|
||||
DBG1(DBG_IKE, "no shared key found for %H - %H", me, other);
|
||||
}
|
||||
return shared_key;
|
||||
}
|
||||
|
||||
METHOD(phase1_t, create_hasher, bool,
|
||||
private_phase1_t *this, proposal_t *proposal)
|
||||
{
|
||||
return this->keymat->create_hasher(this->keymat, proposal);
|
||||
}
|
||||
|
||||
METHOD(phase1_t, create_dh, bool,
|
||||
private_phase1_t *this, diffie_hellman_group_t group)
|
||||
{
|
||||
this->dh = this->keymat->keymat.create_dh(&this->keymat->keymat, group);
|
||||
return this->dh != NULL;
|
||||
}
|
||||
|
||||
METHOD(phase1_t, derive_keys, bool,
|
||||
private_phase1_t *this, peer_cfg_t *peer_cfg, auth_method_t method,
|
||||
proposal_t *proposal)
|
||||
{
|
||||
shared_key_t *shared_key = NULL;
|
||||
|
||||
switch (method)
|
||||
{
|
||||
case AUTH_PSK:
|
||||
case AUTH_XAUTH_INIT_PSK:
|
||||
case AUTH_XAUTH_RESP_PSK:
|
||||
shared_key = lookup_shared_key(this, peer_cfg);
|
||||
if (!shared_key)
|
||||
{
|
||||
return FALSE;
|
||||
}
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
if (!this->keymat->derive_ike_keys(this->keymat, proposal,
|
||||
this->dh, this->dh_value, this->nonce_i, this->nonce_r,
|
||||
this->ike_sa->get_id(this->ike_sa), method, shared_key))
|
||||
{
|
||||
DESTROY_IF(shared_key);
|
||||
DBG1(DBG_IKE, "key derivation for %N failed", auth_method_names, method);
|
||||
return FALSE;
|
||||
}
|
||||
DESTROY_IF(shared_key);
|
||||
charon->bus->ike_keys(charon->bus, this->ike_sa, this->dh,
|
||||
this->nonce_i, this->nonce_r, NULL);
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
/**
|
||||
* Check if a peer skipped authentication by using Hybrid authentication
|
||||
*/
|
||||
static bool skipped_auth(private_phase1_t *this,
|
||||
auth_method_t method, bool local)
|
||||
{
|
||||
bool initiator;
|
||||
|
||||
initiator = local == this->initiator;
|
||||
if (initiator && method == AUTH_HYBRID_INIT_RSA)
|
||||
{
|
||||
return TRUE;
|
||||
}
|
||||
if (!initiator && method == AUTH_HYBRID_RESP_RSA)
|
||||
{
|
||||
return TRUE;
|
||||
}
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
/**
|
||||
* Check if remote authentication constraints fulfilled
|
||||
*/
|
||||
static bool check_constraints(private_phase1_t *this, auth_method_t method)
|
||||
{
|
||||
identification_t *id;
|
||||
auth_cfg_t *auth, *cfg;
|
||||
peer_cfg_t *peer_cfg;
|
||||
|
||||
auth = this->ike_sa->get_auth_cfg(this->ike_sa, FALSE);
|
||||
/* auth identity to comply */
|
||||
id = this->ike_sa->get_other_id(this->ike_sa);
|
||||
auth->add(auth, AUTH_RULE_IDENTITY, id->clone(id));
|
||||
if (skipped_auth(this, method, FALSE))
|
||||
{
|
||||
return TRUE;
|
||||
}
|
||||
peer_cfg = this->ike_sa->get_peer_cfg(this->ike_sa);
|
||||
cfg = get_auth_cfg(peer_cfg, FALSE);
|
||||
return cfg && auth->complies(auth, cfg, TRUE);
|
||||
}
|
||||
|
||||
/**
|
||||
* Save authentication information after authentication succeeded
|
||||
*/
|
||||
static void save_auth_cfg(private_phase1_t *this,
|
||||
auth_method_t method, bool local)
|
||||
{
|
||||
auth_cfg_t *auth;
|
||||
|
||||
if (skipped_auth(this, method, local))
|
||||
{
|
||||
return;
|
||||
}
|
||||
auth = auth_cfg_create();
|
||||
/* for local config, we _copy_ entires from the config, as it contains
|
||||
* certificates we must send later. */
|
||||
auth->merge(auth, this->ike_sa->get_auth_cfg(this->ike_sa, local), local);
|
||||
this->ike_sa->add_auth_cfg(this->ike_sa, local, auth);
|
||||
}
|
||||
|
||||
/**
|
||||
* Create an authenticator instance
|
||||
*/
|
||||
static authenticator_t* create_authenticator(private_phase1_t *this,
|
||||
auth_method_t method, chunk_t id)
|
||||
{
|
||||
authenticator_t *authenticator;
|
||||
|
||||
authenticator = authenticator_create_v1(this->ike_sa, this->initiator,
|
||||
method, this->dh, this->dh_value, this->sa_payload, id);
|
||||
if (!authenticator)
|
||||
{
|
||||
DBG1(DBG_IKE, "negotiated authentication method %N not supported",
|
||||
auth_method_names, method);
|
||||
}
|
||||
return authenticator;
|
||||
}
|
||||
|
||||
METHOD(phase1_t, verify_auth, bool,
|
||||
private_phase1_t *this, auth_method_t method, message_t *message,
|
||||
chunk_t id_data)
|
||||
{
|
||||
authenticator_t *authenticator;
|
||||
status_t status;
|
||||
|
||||
authenticator = create_authenticator(this, method, id_data);
|
||||
if (authenticator)
|
||||
{
|
||||
status = authenticator->process(authenticator, message);
|
||||
authenticator->destroy(authenticator);
|
||||
if (status == SUCCESS && check_constraints(this, method))
|
||||
{
|
||||
save_auth_cfg(this, method, FALSE);
|
||||
return TRUE;
|
||||
}
|
||||
}
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
METHOD(phase1_t, build_auth, bool,
|
||||
private_phase1_t *this, auth_method_t method, message_t *message,
|
||||
chunk_t id_data)
|
||||
{
|
||||
authenticator_t *authenticator;
|
||||
status_t status;
|
||||
|
||||
authenticator = create_authenticator(this, method, id_data);
|
||||
if (authenticator)
|
||||
{
|
||||
status = authenticator->build(authenticator, message);
|
||||
authenticator->destroy(authenticator);
|
||||
if (status == SUCCESS)
|
||||
{
|
||||
save_auth_cfg(this, method, TRUE);
|
||||
return TRUE;
|
||||
}
|
||||
}
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
/**
|
||||
* Get the two auth classes from local or remote config
|
||||
*/
|
||||
static void get_auth_class(peer_cfg_t *peer_cfg, bool local,
|
||||
auth_class_t *c1, auth_class_t *c2)
|
||||
{
|
||||
enumerator_t *enumerator;
|
||||
auth_cfg_t *auth;
|
||||
|
||||
*c1 = *c2 = AUTH_CLASS_ANY;
|
||||
|
||||
enumerator = peer_cfg->create_auth_cfg_enumerator(peer_cfg, local);
|
||||
while (enumerator->enumerate(enumerator, &auth))
|
||||
{
|
||||
if (*c1 == AUTH_CLASS_ANY)
|
||||
{
|
||||
*c1 = (uintptr_t)auth->get(auth, AUTH_RULE_AUTH_CLASS);
|
||||
}
|
||||
else
|
||||
{
|
||||
*c2 = (uintptr_t)auth->get(auth, AUTH_RULE_AUTH_CLASS);
|
||||
break;
|
||||
}
|
||||
}
|
||||
enumerator->destroy(enumerator);
|
||||
}
|
||||
|
||||
METHOD(phase1_t, get_auth_method, auth_method_t,
|
||||
private_phase1_t *this, peer_cfg_t *peer_cfg)
|
||||
{
|
||||
auth_class_t i1, i2, r1, r2;
|
||||
|
||||
get_auth_class(peer_cfg, this->initiator, &i1, &i2);
|
||||
get_auth_class(peer_cfg, !this->initiator, &r1, &r2);
|
||||
|
||||
if (i1 == AUTH_CLASS_PUBKEY && r1 == AUTH_CLASS_PUBKEY)
|
||||
{
|
||||
if (i2 == AUTH_CLASS_ANY && r2 == AUTH_CLASS_ANY)
|
||||
{
|
||||
/* TODO-IKEv1: ECDSA? */
|
||||
return AUTH_RSA;
|
||||
}
|
||||
if (i2 == AUTH_CLASS_XAUTH)
|
||||
{
|
||||
return AUTH_XAUTH_INIT_RSA;
|
||||
}
|
||||
if (r2 == AUTH_CLASS_XAUTH)
|
||||
{
|
||||
return AUTH_XAUTH_RESP_RSA;
|
||||
}
|
||||
}
|
||||
if (i1 == AUTH_CLASS_PSK && r1 == AUTH_CLASS_PSK)
|
||||
{
|
||||
if (i2 == AUTH_CLASS_ANY && r2 == AUTH_CLASS_ANY)
|
||||
{
|
||||
return AUTH_PSK;
|
||||
}
|
||||
if (i2 == AUTH_CLASS_XAUTH)
|
||||
{
|
||||
return AUTH_XAUTH_INIT_PSK;
|
||||
}
|
||||
if (r2 == AUTH_CLASS_XAUTH)
|
||||
{
|
||||
return AUTH_XAUTH_RESP_PSK;
|
||||
}
|
||||
}
|
||||
if (i1 == AUTH_CLASS_XAUTH && r1 == AUTH_CLASS_PUBKEY &&
|
||||
i2 == AUTH_CLASS_ANY && r2 == AUTH_CLASS_ANY)
|
||||
{
|
||||
return AUTH_HYBRID_INIT_RSA;
|
||||
}
|
||||
return AUTH_NONE;
|
||||
}
|
||||
|
||||
METHOD(phase1_t, select_config, peer_cfg_t*,
|
||||
private_phase1_t *this, auth_method_t method, identification_t *id)
|
||||
{
|
||||
enumerator_t *enumerator;
|
||||
peer_cfg_t *current, *found = NULL;
|
||||
host_t *me, *other;
|
||||
|
||||
me = this->ike_sa->get_my_host(this->ike_sa);
|
||||
other = this->ike_sa->get_other_host(this->ike_sa);
|
||||
DBG1(DBG_CFG, "looking for %N peer configs matching %H...%H[%Y]",
|
||||
auth_method_names, method, me, other, id);
|
||||
enumerator = charon->backends->create_peer_cfg_enumerator(charon->backends,
|
||||
me, other, NULL, id, IKEV1);
|
||||
while (enumerator->enumerate(enumerator, ¤t))
|
||||
{
|
||||
if (get_auth_method(this, current) == method)
|
||||
{
|
||||
found = current->get_ref(current);
|
||||
break;
|
||||
}
|
||||
}
|
||||
enumerator->destroy(enumerator);
|
||||
|
||||
if (found)
|
||||
{
|
||||
DBG2(DBG_CFG, "selected peer config \"%s\"", found->get_name(found));
|
||||
}
|
||||
return found;
|
||||
}
|
||||
|
||||
METHOD(phase1_t, get_id, identification_t*,
|
||||
private_phase1_t *this, peer_cfg_t *peer_cfg, bool local)
|
||||
{
|
||||
auth_cfg_t *auth;
|
||||
|
||||
auth = get_auth_cfg(peer_cfg, local);
|
||||
if (auth)
|
||||
{
|
||||
return auth->get(auth, AUTH_RULE_IDENTITY);
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
|
||||
METHOD(phase1_t, save_sa_payload, bool,
|
||||
private_phase1_t *this, message_t *message)
|
||||
{
|
||||
enumerator_t *enumerator;
|
||||
payload_t *payload, *sa = NULL;
|
||||
chunk_t data;
|
||||
size_t offset = IKE_HEADER_LENGTH;
|
||||
|
||||
enumerator = message->create_payload_enumerator(message);
|
||||
while (enumerator->enumerate(enumerator, &payload))
|
||||
{
|
||||
if (payload->get_type(payload) == SECURITY_ASSOCIATION_V1)
|
||||
{
|
||||
sa = payload;
|
||||
break;
|
||||
}
|
||||
else
|
||||
{
|
||||
offset += payload->get_length(payload);
|
||||
}
|
||||
}
|
||||
enumerator->destroy(enumerator);
|
||||
|
||||
data = message->get_packet_data(message);
|
||||
if (sa && data.len >= offset + sa->get_length(sa))
|
||||
{
|
||||
/* Get SA payload without 4 byte fixed header */
|
||||
data = chunk_skip(data, offset);
|
||||
data.len = sa->get_length(sa);
|
||||
data = chunk_skip(data, 4);
|
||||
this->sa_payload = chunk_clone(data);
|
||||
return TRUE;
|
||||
}
|
||||
DBG1(DBG_IKE, "unable to extract SA payload encoding");
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
METHOD(phase1_t, add_nonce_ke, bool,
|
||||
private_phase1_t *this, message_t *message)
|
||||
{
|
||||
nonce_payload_t *nonce_payload;
|
||||
ke_payload_t *ke_payload;
|
||||
chunk_t nonce;
|
||||
rng_t *rng;
|
||||
|
||||
ke_payload = ke_payload_create_from_diffie_hellman(KEY_EXCHANGE_V1, this->dh);
|
||||
message->add_payload(message, &ke_payload->payload_interface);
|
||||
|
||||
rng = lib->crypto->create_rng(lib->crypto, RNG_WEAK);
|
||||
if (!rng)
|
||||
{
|
||||
DBG1(DBG_IKE, "no RNG found to create nonce");
|
||||
return FALSE;
|
||||
}
|
||||
rng->allocate_bytes(rng, NONCE_SIZE, &nonce);
|
||||
rng->destroy(rng);
|
||||
|
||||
nonce_payload = nonce_payload_create(NONCE_V1);
|
||||
nonce_payload->set_nonce(nonce_payload, nonce);
|
||||
message->add_payload(message, &nonce_payload->payload_interface);
|
||||
|
||||
if (this->initiator)
|
||||
{
|
||||
this->nonce_i = nonce;
|
||||
}
|
||||
else
|
||||
{
|
||||
this->nonce_r = nonce;
|
||||
}
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
METHOD(phase1_t, get_nonce_ke, bool,
|
||||
private_phase1_t *this, message_t *message)
|
||||
{
|
||||
nonce_payload_t *nonce_payload;
|
||||
ke_payload_t *ke_payload;
|
||||
|
||||
ke_payload = (ke_payload_t*)message->get_payload(message, KEY_EXCHANGE_V1);
|
||||
if (!ke_payload)
|
||||
{
|
||||
DBG1(DBG_IKE, "KE payload missing in message");
|
||||
return FALSE;
|
||||
}
|
||||
this->dh_value = chunk_clone(ke_payload->get_key_exchange_data(ke_payload));
|
||||
this->dh->set_other_public_value(this->dh, this->dh_value);
|
||||
|
||||
nonce_payload = (nonce_payload_t*)message->get_payload(message, NONCE_V1);
|
||||
if (!nonce_payload)
|
||||
{
|
||||
DBG1(DBG_IKE, "NONCE payload missing in message");
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
if (this->initiator)
|
||||
{
|
||||
this->nonce_r = nonce_payload->get_nonce(nonce_payload);
|
||||
}
|
||||
else
|
||||
{
|
||||
this->nonce_i = nonce_payload->get_nonce(nonce_payload);
|
||||
}
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
METHOD(phase1_t, destroy, void,
|
||||
private_phase1_t *this)
|
||||
{
|
||||
chunk_free(&this->sa_payload);
|
||||
DESTROY_IF(this->dh);
|
||||
free(this->dh_value.ptr);
|
||||
free(this->nonce_i.ptr);
|
||||
free(this->nonce_r.ptr);
|
||||
free(this);
|
||||
}
|
||||
|
||||
/**
|
||||
* See header
|
||||
*/
|
||||
phase1_t *phase1_create(ike_sa_t *ike_sa, bool initiator)
|
||||
{
|
||||
private_phase1_t *this;
|
||||
|
||||
INIT(this,
|
||||
.public = {
|
||||
.create_hasher = _create_hasher,
|
||||
.create_dh = _create_dh,
|
||||
.derive_keys = _derive_keys,
|
||||
.get_auth_method = _get_auth_method,
|
||||
.get_id = _get_id,
|
||||
.select_config = _select_config,
|
||||
.verify_auth = _verify_auth,
|
||||
.build_auth = _build_auth,
|
||||
.save_sa_payload = _save_sa_payload,
|
||||
.add_nonce_ke = _add_nonce_ke,
|
||||
.get_nonce_ke = _get_nonce_ke,
|
||||
.destroy = _destroy,
|
||||
},
|
||||
.ike_sa = ike_sa,
|
||||
.initiator = initiator,
|
||||
.keymat = (keymat_v1_t*)ike_sa->get_keymat(ike_sa),
|
||||
);
|
||||
|
||||
return &this->public;
|
||||
}
|
||||
|
|
@ -0,0 +1,148 @@
|
|||
/*
|
||||
* Copyright (C) 2012 Martin Willi
|
||||
* Copyright (C) 2012 revosec AG
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
/**
|
||||
* @defgroup phase1 phase1
|
||||
* @{ @ingroup ikev1
|
||||
*/
|
||||
|
||||
#ifndef PHASE1_H_
|
||||
#define PHASE1_H_
|
||||
|
||||
typedef struct phase1_t phase1_t;
|
||||
|
||||
#include <sa/ike_sa.h>
|
||||
#include <crypto/diffie_hellman.h>
|
||||
|
||||
/**
|
||||
* Common phase 1 helper for main and aggressive mode.
|
||||
*/
|
||||
struct phase1_t {
|
||||
|
||||
/**
|
||||
* Create keymat hasher.
|
||||
*
|
||||
* @param proposal negotiated proposal
|
||||
* @return TRUE if hasher created
|
||||
*/
|
||||
bool (*create_hasher)(phase1_t *this, proposal_t *proposal);
|
||||
|
||||
/**
|
||||
* Create DH object using SA keymat.
|
||||
*
|
||||
* @param group negotiated DH group
|
||||
* @return TRUE if group supported
|
||||
*/
|
||||
bool (*create_dh)(phase1_t *this, diffie_hellman_group_t group);
|
||||
|
||||
/**
|
||||
* Derive key material.
|
||||
*
|
||||
* @param peer_cfg peer config to look up shared key for, or NULL
|
||||
* @param method negotiated authenticated method
|
||||
* @param proposal selected IKE proposal
|
||||
* @return TRUE if successful
|
||||
*/
|
||||
bool (*derive_keys)(phase1_t *this, peer_cfg_t *peer_cfg,
|
||||
auth_method_t method, proposal_t *proposal);
|
||||
/**
|
||||
* Verify a HASH or SIG payload in message.
|
||||
*
|
||||
* @param method negotiated auth method
|
||||
* @param message message containing HASH or SIG payload
|
||||
* @param id_data encoded identity, including protocol/port fields
|
||||
* @return TRUE if verified successfully
|
||||
*/
|
||||
bool (*verify_auth)(phase1_t *this, auth_method_t method,
|
||||
message_t *message, chunk_t id_data);
|
||||
|
||||
/**
|
||||
* Build a HASH or SIG payload and add it to message.
|
||||
*
|
||||
* @param method negotiated auth method
|
||||
* @param message message to add payload to
|
||||
* @param id_data encoded identity, including protocol/port fields
|
||||
* @return TRUE if built successfully
|
||||
*/
|
||||
bool (*build_auth)(phase1_t *this, auth_method_t method,
|
||||
message_t *message, chunk_t id_data);
|
||||
|
||||
/**
|
||||
* Get the IKEv1 authentication method defined by peer config.
|
||||
*
|
||||
* @param peer_cfg peer config to get auth method from
|
||||
* @return auth method, or AUTH_NONE
|
||||
*/
|
||||
auth_method_t (*get_auth_method)(phase1_t *this, peer_cfg_t *peer_cfg);
|
||||
|
||||
/**
|
||||
* Select a peer config as responder.
|
||||
*
|
||||
* @param method used authentication method
|
||||
* @param id initiator identity
|
||||
* @return selected peer config, NULL if none found
|
||||
*/
|
||||
peer_cfg_t* (*select_config)(phase1_t *this, auth_method_t method,
|
||||
identification_t *id);
|
||||
|
||||
/**
|
||||
* Get configured identity from peer config.
|
||||
*
|
||||
* @param peer_cfg peer config to get identity from
|
||||
* @param local TRUE to get own identity, FALSE for remote
|
||||
* @return identity, pointing to internal config data
|
||||
*/
|
||||
identification_t* (*get_id)(phase1_t *this, peer_cfg_t *peer_cfg, bool local);
|
||||
|
||||
/**
|
||||
* Extract and store SA payload bytes from encoded message.
|
||||
*
|
||||
* @param message message to extract SA payload bytes from
|
||||
* @return TRUE if SA payload found
|
||||
*/
|
||||
bool (*save_sa_payload)(phase1_t *this, message_t *message);
|
||||
|
||||
/**
|
||||
* Add Nonce and KE payload to message.
|
||||
*
|
||||
* @param message message to add payloads
|
||||
* @return TRUE if payloads added successfully
|
||||
*/
|
||||
bool (*add_nonce_ke)(phase1_t *this, message_t *message);
|
||||
|
||||
/**
|
||||
* Extract Nonce and KE payload from message.
|
||||
*
|
||||
* @param message message to get payloads from
|
||||
* @return TRUE if payloads extracted successfully
|
||||
*/
|
||||
bool (*get_nonce_ke)(phase1_t *this, message_t *message);
|
||||
|
||||
/**
|
||||
* Destroy a phase1_t.
|
||||
*/
|
||||
void (*destroy)(phase1_t *this);
|
||||
};
|
||||
|
||||
/**
|
||||
* Create a phase1 instance.
|
||||
*
|
||||
* @param ike_sa IKE_SA to set up
|
||||
* @param initiator TRUE if initiating actively
|
||||
* @return Phase 1 helper
|
||||
*/
|
||||
phase1_t *phase1_create(ike_sa_t *ike_sa, bool initiator);
|
||||
|
||||
#endif /** PHASE1_H_ @}*/
|
||||
Loading…
Reference in New Issue