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-rw-r--r--src/libcharon/Makefile.am1
-rw-r--r--src/libcharon/sa/authenticators/pubkey_v1_authenticator.c207
-rw-r--r--src/libcharon/sa/authenticators/pubkey_v1_authenticator.h52
3 files changed, 260 insertions, 0 deletions
diff --git a/src/libcharon/Makefile.am b/src/libcharon/Makefile.am
index eb58768f5..bf409d26c 100644
--- a/src/libcharon/Makefile.am
+++ b/src/libcharon/Makefile.am
@@ -65,6 +65,7 @@ sa/authenticators/eap/eap_manager.c sa/authenticators/eap/eap_manager.h \
sa/authenticators/psk_authenticator.c sa/authenticators/psk_authenticator.h \
sa/authenticators/pubkey_authenticator.c sa/authenticators/pubkey_authenticator.h \
sa/authenticators/psk_v1_authenticator.c sa/authenticators/psk_v1_authenticator.h \
+sa/authenticators/pubkey_v1_authenticator.c sa/authenticators/pubkey_v1_authenticator.h \
sa/authenticators/xauth_authenticator.c sa/authenticators/xauth_authenticator.h \
sa/authenticators/xauth/xauth_method.c sa/authenticators/xauth/xauth_method.h \
sa/authenticators/xauth/xauth_manager.c sa/authenticators/xauth/xauth_manager.h \
diff --git a/src/libcharon/sa/authenticators/pubkey_v1_authenticator.c b/src/libcharon/sa/authenticators/pubkey_v1_authenticator.c
new file mode 100644
index 000000000..82fc8cf66
--- /dev/null
+++ b/src/libcharon/sa/authenticators/pubkey_v1_authenticator.c
@@ -0,0 +1,207 @@
+/*
+ * Copyright (C) 2011 Martin Willi
+ * Copyright (C) 2011 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 "pubkey_v1_authenticator.h"
+
+#include <daemon.h>
+#include <sa/keymat_v1.h>
+#include <encoding/payloads/hash_payload.h>
+
+typedef struct private_pubkey_v1_authenticator_t private_pubkey_v1_authenticator_t;
+
+/**
+ * Private data of an pubkey_v1_authenticator_t object.
+ */
+struct private_pubkey_v1_authenticator_t {
+
+ /**
+ * Public authenticator_t interface.
+ */
+ pubkey_v1_authenticator_t public;
+
+ /**
+ * Assigned IKE_SA
+ */
+ ike_sa_t *ike_sa;
+
+ /**
+ * TRUE if we are initiator
+ */
+ bool initiator;
+
+ /**
+ * DH key exchange
+ */
+ diffie_hellman_t *dh;
+
+ /**
+ * Others DH public value
+ */
+ chunk_t dh_value;
+
+ /**
+ * Encoded SA payload, without fixed header
+ */
+ chunk_t sa_payload;
+};
+
+METHOD(authenticator_t, build, status_t,
+ private_pubkey_v1_authenticator_t *this, message_t *message)
+{
+ hash_payload_t *sig_payload;
+ chunk_t hash, sig, dh;
+ keymat_v1_t *keymat;
+ status_t status;
+ private_key_t *private;
+ identification_t *id;
+ auth_cfg_t *auth;
+ key_type_t type;
+ signature_scheme_t scheme;
+
+ /* TODO-IKEv1: other key types */
+ type = KEY_RSA;
+ scheme = SIGN_RSA_EMSA_PKCS1_NULL;
+
+ id = this->ike_sa->get_my_id(this->ike_sa);
+ auth = this->ike_sa->get_auth_cfg(this->ike_sa, TRUE);
+ private = lib->credmgr->get_private(lib->credmgr, KEY_RSA, id, auth);
+ if (!private)
+ {
+ DBG1(DBG_IKE, "no private key found for '%Y'", id);
+ return NOT_FOUND;
+ }
+
+ this->dh->get_my_public_value(this->dh, &dh);
+ keymat = (keymat_v1_t*)this->ike_sa->get_keymat(this->ike_sa);
+ hash = keymat->get_hash(keymat, this->initiator, dh, this->dh_value,
+ this->ike_sa->get_id(this->ike_sa), this->sa_payload, id);
+ free(dh.ptr);
+
+ if (private->sign(private, scheme, hash, &sig))
+ {
+ sig_payload = hash_payload_create(SIGNATURE_V1);
+ sig_payload->set_hash(sig_payload, sig);
+ free(sig.ptr);
+ message->add_payload(message, &sig_payload->payload_interface);
+ status = SUCCESS;
+ DBG1(DBG_IKE, "authentication of '%Y' (myself) successful", id);
+ }
+ else
+ {
+ DBG1(DBG_IKE, "authentication of '%Y' (myself) failed", id);
+ status = FAILED;
+ }
+ private->destroy(private);
+ free(hash.ptr);
+
+ return status;
+}
+
+METHOD(authenticator_t, process, status_t,
+ private_pubkey_v1_authenticator_t *this, message_t *message)
+{
+ chunk_t hash, sig, dh;
+ keymat_v1_t *keymat;
+ public_key_t *public;
+ hash_payload_t *sig_payload;
+ auth_cfg_t *auth, *current_auth;
+ enumerator_t *enumerator;
+ status_t status = NOT_FOUND;
+ key_type_t type;
+ signature_scheme_t scheme;
+ identification_t *id;
+
+ /* TODO-IKEv1: currently RSA only */
+ type = KEY_RSA;
+ scheme = SIGN_RSA_EMSA_PKCS1_NULL;
+
+ sig_payload = (hash_payload_t*)message->get_payload(message, SIGNATURE_V1);
+ if (!sig_payload)
+ {
+ DBG1(DBG_IKE, "SIG payload missing in message");
+ return FALSE;
+ }
+
+ id = this->ike_sa->get_other_id(this->ike_sa);
+ this->dh->get_my_public_value(this->dh, &dh);
+ keymat = (keymat_v1_t*)this->ike_sa->get_keymat(this->ike_sa);
+ hash = keymat->get_hash(keymat, !this->initiator, this->dh_value, dh,
+ this->ike_sa->get_id(this->ike_sa), this->sa_payload, id);
+ free(dh.ptr);
+
+ sig = sig_payload->get_hash(sig_payload);
+ auth = this->ike_sa->get_auth_cfg(this->ike_sa, FALSE);
+ enumerator = lib->credmgr->create_public_enumerator(lib->credmgr, type,
+ id, auth);
+ while (enumerator->enumerate(enumerator, &public, &current_auth))
+ {
+ if (public->verify(public, scheme, hash, sig))
+ {
+ DBG1(DBG_IKE, "authentication of '%Y' with %N successful",
+ id, key_type_names, type);
+ status = SUCCESS;
+ auth->merge(auth, current_auth, FALSE);
+ auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY);
+ break;
+ }
+ else
+ {
+ DBG1(DBG_IKE, "signature validation failed, looking for another key");
+ status = FAILED;
+ }
+ }
+ enumerator->destroy(enumerator);
+ free(hash.ptr);
+ if (status != SUCCESS)
+ {
+ DBG1(DBG_IKE, "no trusted %N public key found for '%Y'",
+ key_type_names, type, id);
+ }
+ return status;
+}
+
+METHOD(authenticator_t, destroy, void,
+ private_pubkey_v1_authenticator_t *this)
+{
+ free(this);
+}
+
+/*
+ * Described in header.
+ */
+pubkey_v1_authenticator_t *pubkey_v1_authenticator_create(ike_sa_t *ike_sa,
+ bool initiator, diffie_hellman_t *dh,
+ chunk_t dh_value, chunk_t sa_payload)
+{
+ private_pubkey_v1_authenticator_t *this;
+
+ INIT(this,
+ .public = {
+ .authenticator = {
+ .build = _build,
+ .process = _process,
+ .is_mutual = (void*)return_false,
+ .destroy = _destroy,
+ },
+ },
+ .ike_sa = ike_sa,
+ .initiator = initiator,
+ .dh = dh,
+ .dh_value = dh_value,
+ .sa_payload = sa_payload,
+ );
+
+ return &this->public;
+}
diff --git a/src/libcharon/sa/authenticators/pubkey_v1_authenticator.h b/src/libcharon/sa/authenticators/pubkey_v1_authenticator.h
new file mode 100644
index 000000000..ed6d77cc0
--- /dev/null
+++ b/src/libcharon/sa/authenticators/pubkey_v1_authenticator.h
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2011 Martin Willi
+ * Copyright (C) 2011 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 pubkey_v1_authenticator pubkey_v1_authenticator
+ * @{ @ingroup authenticators
+ */
+
+#ifndef PUBKEY_V1_AUTHENTICATOR_H_
+#define PUBKEY_V1_AUTHENTICATOR_H_
+
+typedef struct pubkey_v1_authenticator_t pubkey_v1_authenticator_t;
+
+#include <sa/authenticators/authenticator.h>
+
+/**
+ * Implementation of authenticator_t using public keys for IKEv1.
+ */
+struct pubkey_v1_authenticator_t {
+
+ /**
+ * Implemented authenticator_t interface.
+ */
+ authenticator_t authenticator;
+};
+
+/**
+ * Create an authenticator to build and verify public key signatures.
+ *
+ * @param ike_sa associated IKE_SA
+ * @param dh diffie hellman key exchange
+ * @param dh_value others public diffie hellman value
+ * @param sa_payload generated SA payload data, without payload header
+ * @return pubkey authenticator
+ */
+pubkey_v1_authenticator_t *pubkey_v1_authenticator_create(ike_sa_t *ike_sa,
+ bool initiator, diffie_hellman_t *dh,
+ chunk_t dh_value, chunk_t sa_payload);
+
+#endif /** PUBKEY_V1_AUTHENTICATOR_H_ @}*/
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