[svn-upgrade] Integrating new upstream version, strongswan (4.4.0)

8 files changed, 1209 insertions, 0 deletions

diff --git a/src/libcharon/plugins/eap_simaka_reauth/Makefile.am b/src/libcharon/plugins/eap_simaka_reauth/Makefile.am
new file mode 100644
index 000000000..fbcd544d3
--- /dev/null
+++ b/src/libcharon/plugins/eap_simaka_reauth/Makefile.am
@@ -0,0 +1,18 @@
+
+INCLUDES = -I$(top_srcdir)/src/libstrongswan -I$(top_srcdir)/src/libhydra \
+	-I$(top_srcdir)/src/libcharon
+
+AM_CFLAGS = -rdynamic
+
+if MONOLITHIC
+noinst_LTLIBRARIES = libstrongswan-eap-simaka-reauth.la
+else
+plugin_LTLIBRARIES = libstrongswan-eap-simaka-reauth.la
+endif
+
+libstrongswan_eap_simaka_reauth_la_SOURCES = \
+	eap_simaka_reauth_plugin.h eap_simaka_reauth_plugin.c \
+	eap_simaka_reauth_card.h eap_simaka_reauth_card.c \
+	eap_simaka_reauth_provider.h eap_simaka_reauth_provider.c
+
+libstrongswan_eap_simaka_reauth_la_LDFLAGS = -module -avoid-version
diff --git a/src/libcharon/plugins/eap_simaka_reauth/Makefile.in b/src/libcharon/plugins/eap_simaka_reauth/Makefile.in
new file mode 100644
index 000000000..35d8e7c3b
--- /dev/null
+++ b/src/libcharon/plugins/eap_simaka_reauth/Makefile.in
@@ -0,0 +1,593 @@
+# Makefile.in generated by automake 1.11 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
+# 2003, 2004, 2005, 2006, 2007, 2008, 2009  Free Software Foundation,
+# Inc.
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
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+am_libstrongswan_eap_simaka_reauth_la_OBJECTS =  \
+	eap_simaka_reauth_plugin.lo eap_simaka_reauth_card.lo \
+	eap_simaka_reauth_provider.lo
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+	$(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=link $(CCLD) \
+	$(AM_CFLAGS) $(CFLAGS) \
+	$(libstrongswan_eap_simaka_reauth_la_LDFLAGS) $(LDFLAGS) -o $@
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+	eap_simaka_reauth_plugin.h eap_simaka_reauth_plugin.c \
+	eap_simaka_reauth_card.h eap_simaka_reauth_card.c \
+	eap_simaka_reauth_provider.h eap_simaka_reauth_provider.c
+
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+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-am
+all-am: Makefile $(LTLIBRARIES)
+installdirs:
+	for dir in "$(DESTDIR)$(plugindir)"; do \
+	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
+	done
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	$(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	  install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	  `test -z '$(STRIP)' || \
+	    echo "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'"` install
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+clean: clean-am
+
+clean-am: clean-generic clean-libtool clean-noinstLTLIBRARIES \
+	clean-pluginLTLIBRARIES mostlyclean-am
+
+distclean: distclean-am
+	-rm -rf ./$(DEPDIR)
+	-rm -f Makefile
+distclean-am: clean-am distclean-compile distclean-generic \
+	distclean-tags
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am: install-pluginLTLIBRARIES
+
+install-dvi: install-dvi-am
+
+install-dvi-am:
+
+install-exec-am:
+
+install-html: install-html-am
+
+install-html-am:
+
+install-info: install-info-am
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-am
+
+install-pdf-am:
+
+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+	-rm -rf ./$(DEPDIR)
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-compile mostlyclean-generic \
+	mostlyclean-libtool
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am: uninstall-pluginLTLIBRARIES
+
+.MAKE: install-am install-strip
+
+.PHONY: CTAGS GTAGS all all-am check check-am clean clean-generic \
+	clean-libtool clean-noinstLTLIBRARIES clean-pluginLTLIBRARIES \
+	ctags distclean distclean-compile distclean-generic \
+	distclean-libtool distclean-tags distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
+	install-data-am install-dvi install-dvi-am install-exec \
+	install-exec-am install-html install-html-am install-info \
+	install-info-am install-man install-pdf install-pdf-am \
+	install-pluginLTLIBRARIES install-ps install-ps-am \
+	install-strip installcheck installcheck-am installdirs \
+	maintainer-clean maintainer-clean-generic mostlyclean \
+	mostlyclean-compile mostlyclean-generic mostlyclean-libtool \
+	pdf pdf-am ps ps-am tags uninstall uninstall-am \
+	uninstall-pluginLTLIBRARIES
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/src/libcharon/plugins/eap_simaka_reauth/eap_simaka_reauth_card.c b/src/libcharon/plugins/eap_simaka_reauth/eap_simaka_reauth_card.c
new file mode 100644
index 000000000..14d0416d9
--- /dev/null
+++ b/src/libcharon/plugins/eap_simaka_reauth/eap_simaka_reauth_card.c
@@ -0,0 +1,170 @@
+/*
+ * Copyright (C) 2009 Martin Willi
+ * Hochschule fuer Technik Rapperswil
+ *
+ * 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 "eap_simaka_reauth_card.h"
+
+#include <daemon.h>
+#include <utils/hashtable.h>
+
+typedef struct private_eap_simaka_reauth_card_t private_eap_simaka_reauth_card_t;
+
+/**
+ * Private data of an eap_simaka_reauth_card_t object.
+ */
+struct private_eap_simaka_reauth_card_t {
+
+	/**
+	 * Public eap_simaka_reauth_card_t interface.
+	 */
+	eap_simaka_reauth_card_t public;
+
+	/**
+	 * Permanent -> reauth_data_t mappings
+	 */
+	hashtable_t *reauth;
+};
+
+/**
+ * Data associated to a reauthentication identity
+ */
+typedef struct {
+	/** currently used reauthentication identity */
+	identification_t *id;
+	/** associated permanent identity */
+	identification_t *permanent;
+	/** counter value */
+	u_int16_t counter;
+	/** master key */
+	char mk[HASH_SIZE_SHA1];
+} reauth_data_t;
+
+/**
+ * hashtable hash function
+ */
+static u_int hash(identification_t *key)
+{
+	return chunk_hash(key->get_encoding(key));
+}
+
+/**
+ * hashtable equals function
+ */
+static bool equals(identification_t *key1, identification_t *key2)
+{
+	return key1->equals(key1, key2);
+}
+
+/**
+ * Implementation of sim_card_t.get_reauth
+ */
+static identification_t *get_reauth(private_eap_simaka_reauth_card_t *this,
+								identification_t *id, char mk[HASH_SIZE_SHA1],
+								u_int16_t *counter)
+{
+	reauth_data_t *data;
+	identification_t *reauth;
+
+	/* look up reauthentication data */
+	data = this->reauth->remove(this->reauth, id);
+	if (!data)
+	{
+		return NULL;
+	}
+	*counter = ++data->counter;
+	memcpy(mk, data->mk, HASH_SIZE_SHA1);
+	reauth = data->id;
+	data->permanent->destroy(data->permanent);
+	free(data);
+	return reauth;
+}
+
+/**
+ * Implementation of sim_card_t.set_reauth
+ */
+static void set_reauth(private_eap_simaka_reauth_card_t *this,
+					   identification_t *id, identification_t* next,
+					   char mk[HASH_SIZE_SHA1], u_int16_t counter)
+{
+	reauth_data_t *data;
+
+	data = this->reauth->get(this->reauth, id);
+	if (data)
+	{
+		data->id->destroy(data->id);
+	}
+	else
+	{
+		data = malloc_thing(reauth_data_t);
+		data->permanent = id->clone(id);
+		this->reauth->put(this->reauth, data->permanent, data);
+	}
+	data->counter = counter;
+	data->id = next->clone(next);
+	memcpy(data->mk, mk, HASH_SIZE_SHA1);
+}
+
+/**
+ * Implementation of sim_card_t.get_quintuplet
+ */
+static status_t get_quintuplet()
+{
+	return NOT_SUPPORTED;
+}
+
+/**
+ * Implementation of eap_simaka_reauth_card_t.destroy.
+ */
+static void destroy(private_eap_simaka_reauth_card_t *this)
+{
+	enumerator_t *enumerator;
+	reauth_data_t *data;
+	void *key;
+
+	enumerator = this->reauth->create_enumerator(this->reauth);
+	while (enumerator->enumerate(enumerator, &key, &data))
+	{
+		data->id->destroy(data->id);
+		data->permanent->destroy(data->permanent);
+		free(data);
+	}
+	enumerator->destroy(enumerator);
+
+	this->reauth->destroy(this->reauth);
+	free(this);
+}
+
+/**
+ * See header
+ */
+eap_simaka_reauth_card_t *eap_simaka_reauth_card_create()
+{
+	private_eap_simaka_reauth_card_t *this;
+
+	this = malloc_thing(private_eap_simaka_reauth_card_t);
+
+	this->public.card.get_triplet = (bool(*)(sim_card_t*, identification_t *id, char rand[SIM_RAND_LEN], char sres[SIM_SRES_LEN], char kc[SIM_KC_LEN]))return_null;
+	this->public.card.get_quintuplet = (status_t(*)(sim_card_t*, identification_t *id, char rand[AKA_RAND_LEN], char autn[AKA_AUTN_LEN], char ck[AKA_CK_LEN], char ik[AKA_IK_LEN], char res[AKA_RES_MAX], int *res_len))get_quintuplet;
+	this->public.card.resync = (bool(*)(sim_card_t*, identification_t *id, char rand[AKA_RAND_LEN], char auts[AKA_AUTS_LEN]))return_false;
+	this->public.card.get_pseudonym = (identification_t*(*)(sim_card_t*, identification_t *perm))return_null;
+	this->public.card.set_pseudonym = (void(*)(sim_card_t*, identification_t *id, identification_t *pseudonym))nop;
+	this->public.card.get_reauth = (identification_t*(*)(sim_card_t*, identification_t *id, char mk[HASH_SIZE_SHA1], u_int16_t *counter))get_reauth;
+	this->public.card.set_reauth = (void(*)(sim_card_t*, identification_t *id, identification_t* next, char mk[HASH_SIZE_SHA1], u_int16_t counter))set_reauth;
+	this->public.destroy = (void(*)(eap_simaka_reauth_card_t*))destroy;
+
+	this->reauth = hashtable_create((void*)hash, (void*)equals, 0);
+
+	return &this->public;
+}
+
diff --git a/src/libcharon/plugins/eap_simaka_reauth/eap_simaka_reauth_card.h b/src/libcharon/plugins/eap_simaka_reauth/eap_simaka_reauth_card.h
new file mode 100644
index 000000000..f24dc8a15
--- /dev/null
+++ b/src/libcharon/plugins/eap_simaka_reauth/eap_simaka_reauth_card.h
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2009 Martin Willi
+ * Hochschule fuer Technik Rapperswil
+ *
+ * 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 eap_simaka_reauth_card eap_simaka_reauth_card
+ * @{ @ingroup eap_simaka_reauth
+ */
+
+#ifndef EAP_SIMAKA_REAUTH_CARD_H_
+#define EAP_SIMAKA_REAUTH_CARD_H_
+
+#include <sa/authenticators/eap/sim_manager.h>
+
+typedef struct eap_simaka_reauth_card_t eap_simaka_reauth_card_t;
+
+/**
+ * SIM card implementing volatile in-memory reauthentication data storage.
+ */
+struct eap_simaka_reauth_card_t {
+
+	/**
+	 * Implements sim_card_t interface
+	 */
+	sim_card_t card;
+
+	/**
+	 * Destroy a eap_simaka_reauth_card_t.
+	 */
+	void (*destroy)(eap_simaka_reauth_card_t *this);
+};
+
+/**
+ * Create a eap_simaka_reauth_card instance.
+ */
+eap_simaka_reauth_card_t *eap_simaka_reauth_card_create();
+
+#endif /** EAP_SIMAKA_REAUTH_CARD_H_ @}*/
diff --git a/src/libcharon/plugins/eap_simaka_reauth/eap_simaka_reauth_plugin.c b/src/libcharon/plugins/eap_simaka_reauth/eap_simaka_reauth_plugin.c
new file mode 100644
index 000000000..987a0e109
--- /dev/null
+++ b/src/libcharon/plugins/eap_simaka_reauth/eap_simaka_reauth_plugin.c
@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2009 Martin Willi
+ * Hochschule fuer Technik Rapperswil
+ *
+ * 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 "eap_simaka_reauth_plugin.h"
+#include "eap_simaka_reauth_card.h"
+#include "eap_simaka_reauth_provider.h"
+
+#include <daemon.h>
+
+typedef struct private_eap_simaka_reauth_t private_eap_simaka_reauth_t;
+
+/**
+ * Private data of an eap_simaka_reauth_t object.
+ */
+struct private_eap_simaka_reauth_t {
+
+	/**
+	 * Public eap_simaka_reauth_plugin_t interface.
+	 */
+	eap_simaka_reauth_plugin_t public;
+
+	/**
+	 * SIM card
+	 */
+	eap_simaka_reauth_card_t *card;
+
+	/**
+	 * SIM provider
+	 */
+	eap_simaka_reauth_provider_t *provider;
+};
+
+/**
+ * Implementation of eap_simaka_reauth_t.destroy.
+ */
+static void destroy(private_eap_simaka_reauth_t *this)
+{
+	charon->sim->remove_card(charon->sim, &this->card->card);
+	charon->sim->remove_provider(charon->sim, &this->provider->provider);
+	this->card->destroy(this->card);
+	this->provider->destroy(this->provider);
+	free(this);
+}
+
+/**
+ * See header
+ */
+plugin_t *eap_simaka_reauth_plugin_create()
+{
+	private_eap_simaka_reauth_t *this = malloc_thing(private_eap_simaka_reauth_t);
+
+	this->public.plugin.destroy = (void(*)(plugin_t*))destroy;
+
+	this->provider = eap_simaka_reauth_provider_create();
+	if (!this->provider)
+	{
+		free(this);
+		return NULL;
+	}
+	this->card = eap_simaka_reauth_card_create();
+
+	charon->sim->add_card(charon->sim, &this->card->card);
+	charon->sim->add_provider(charon->sim, &this->provider->provider);
+
+	return &this->public.plugin;
+}
+
diff --git a/src/libcharon/plugins/eap_simaka_reauth/eap_simaka_reauth_plugin.h b/src/libcharon/plugins/eap_simaka_reauth/eap_simaka_reauth_plugin.h
new file mode 100644
index 000000000..80c8a1037
--- /dev/null
+++ b/src/libcharon/plugins/eap_simaka_reauth/eap_simaka_reauth_plugin.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2009 Martin Willi
+ * Hochschule fuer Technik Rapperswil
+ *
+ * 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 eap_simaka_reauth eap_simaka_reauth
+ * @ingroup cplugins
+ *
+ * @defgroup eap_simaka_reauth_plugin eap_simaka_reauth_plugin
+ * @{ @ingroup eap_simaka_reauth
+ */
+
+#ifndef EAP_SIMAKA_REAUTH_PLUGIN_H_
+#define EAP_SIMAKA_REAUTH_PLUGIN_H_
+
+#include <plugins/plugin.h>
+
+typedef struct eap_simaka_reauth_plugin_t eap_simaka_reauth_plugin_t;
+
+/**
+ * Plugin to provide in-memory EAP-SIM/AKA reauthentication data storage.
+ */
+struct eap_simaka_reauth_plugin_t {
+
+	/**
+	 * implements plugin interface
+	 */
+	plugin_t plugin;
+};
+
+#endif /** EAP_SIMAKA_REAUTH_PLUGIN_H_ @}*/
diff --git a/src/libcharon/plugins/eap_simaka_reauth/eap_simaka_reauth_provider.c b/src/libcharon/plugins/eap_simaka_reauth/eap_simaka_reauth_provider.c
new file mode 100644
index 000000000..f962b2d84
--- /dev/null
+++ b/src/libcharon/plugins/eap_simaka_reauth/eap_simaka_reauth_provider.c
@@ -0,0 +1,209 @@
+/*
+ * Copyright (C) 2009 Martin Willi
+ * Hochschule fuer Technik Rapperswil
+ *
+ * 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 "eap_simaka_reauth_provider.h"
+
+#include <daemon.h>
+#include <utils/hashtable.h>
+
+typedef struct private_eap_simaka_reauth_provider_t private_eap_simaka_reauth_provider_t;
+
+/**
+ * Private data of an eap_simaka_reauth_provider_t object.
+ */
+struct private_eap_simaka_reauth_provider_t {
+
+	/**
+	 * Public eap_simaka_reauth_provider_t interface.
+	 */
+	eap_simaka_reauth_provider_t public;
+
+	/**
+	 * Permanent -> reauth_data_t mappings
+	 */
+	hashtable_t *reauth;
+
+	/**
+	 * Reverse reauth -> permanent mappings
+	 */
+	hashtable_t *permanent;
+
+	/**
+	 * RNG for pseudonyms/reauth identities
+	 */
+	rng_t *rng;
+};
+
+/**
+ * Data associated to a reauthentication identity
+ */
+typedef struct {
+	/** currently used reauthentication identity */
+	identification_t *id;
+	/** counter value */
+	u_int16_t counter;
+	/** master key */
+	char mk[HASH_SIZE_SHA1];
+} reauth_data_t;
+
+/**
+ * hashtable hash function
+ */
+static u_int hash(identification_t *key)
+{
+	return chunk_hash(key->get_encoding(key));
+}
+
+/**
+ * hashtable equals function
+ */
+static bool equals(identification_t *key1, identification_t *key2)
+{
+	return key1->equals(key1, key2);
+}
+
+/**
+ * Generate a random identity
+ */
+static identification_t *gen_identity(private_eap_simaka_reauth_provider_t *this)
+{
+	char buf[8], hex[sizeof(buf) * 2 + 1];
+
+	this->rng->get_bytes(this->rng, sizeof(buf), buf);
+	chunk_to_hex(chunk_create(buf, sizeof(buf)), hex, FALSE);
+
+	return identification_create_from_string(hex);
+}
+
+/**
+ * Implementation of sim_provider_t.is_reauth
+ */
+static identification_t *is_reauth(private_eap_simaka_reauth_provider_t *this,
+								identification_t *id, char mk[HASH_SIZE_SHA1],
+								u_int16_t *counter)
+{
+	identification_t *permanent;
+	reauth_data_t *data;
+
+	/* look up permanent identity */
+	permanent = this->permanent->get(this->permanent, id);
+	if (!permanent)
+	{
+		return NULL;
+	}
+	/* look up reauthentication data */
+	data = this->reauth->get(this->reauth, permanent);
+	if (!data)
+	{
+		return NULL;
+	}
+	*counter = ++data->counter;
+	memcpy(mk, data->mk, HASH_SIZE_SHA1);
+	return permanent->clone(permanent);
+}
+
+/**
+ * Implementation of sim_provider_t.gen_reauth
+ */
+static identification_t *gen_reauth(private_eap_simaka_reauth_provider_t *this,
+								identification_t *id, char mk[HASH_SIZE_SHA1])
+{
+	reauth_data_t *data;
+	identification_t *permanent;
+
+	data = this->reauth->get(this->reauth, id);
+	if (data)
+	{	/* update existing entry */
+		permanent = this->permanent->remove(this->permanent, data->id);
+		if (permanent)
+		{
+			data->id->destroy(data->id);
+			data->id = gen_identity(this);
+			this->permanent->put(this->permanent, data->id, permanent);
+		}
+	}
+	else
+	{	/* generate new entry */
+		data = malloc_thing(reauth_data_t);
+		data->counter = 0;
+		data->id = gen_identity(this);
+		id = id->clone(id);
+		this->reauth->put(this->reauth, id, data);
+		this->permanent->put(this->permanent, data->id, id);
+	}
+	memcpy(data->mk, mk, HASH_SIZE_SHA1);
+
+	return data->id->clone(data->id);
+}
+
+/**
+ * Implementation of eap_simaka_reauth_provider_t.destroy.
+ */
+static void destroy(private_eap_simaka_reauth_provider_t *this)
+{
+	enumerator_t *enumerator;
+	identification_t *id;
+	reauth_data_t *data;
+	void *key;
+
+	enumerator = this->permanent->create_enumerator(this->permanent);
+	while (enumerator->enumerate(enumerator, &key, &id))
+	{
+		id->destroy(id);
+	}
+	enumerator->destroy(enumerator);
+
+	enumerator = this->reauth->create_enumerator(this->reauth);
+	while (enumerator->enumerate(enumerator, &key, &data))
+	{
+		data->id->destroy(data->id);
+		free(data);
+	}
+	enumerator->destroy(enumerator);
+
+	this->permanent->destroy(this->permanent);
+	this->reauth->destroy(this->reauth);
+	this->rng->destroy(this->rng);
+	free(this);
+}
+
+/**
+ * See header
+ */
+eap_simaka_reauth_provider_t *eap_simaka_reauth_provider_create()
+{
+	private_eap_simaka_reauth_provider_t *this = malloc_thing(private_eap_simaka_reauth_provider_t);
+
+	this->public.provider.get_triplet = (bool(*)(sim_provider_t*, identification_t *id, char rand[SIM_RAND_LEN], char sres[SIM_SRES_LEN], char kc[SIM_KC_LEN]))return_false;
+	this->public.provider.get_quintuplet = (bool(*)(sim_provider_t*, identification_t *id, char rand[AKA_RAND_LEN], char xres[AKA_RES_MAX], int *xres_len, char ck[AKA_CK_LEN], char ik[AKA_IK_LEN], char autn[AKA_AUTN_LEN]))return_false;
+	this->public.provider.resync = (bool(*)(sim_provider_t*, identification_t *id, char rand[AKA_RAND_LEN], char auts[AKA_AUTS_LEN]))return_false;
+	this->public.provider.is_pseudonym = (identification_t*(*)(sim_provider_t*, identification_t *id))return_null;
+	this->public.provider.gen_pseudonym = (identification_t*(*)(sim_provider_t*, identification_t *id))return_null;
+	this->public.provider.is_reauth = (identification_t*(*)(sim_provider_t*, identification_t *id, char [HASH_SIZE_SHA1], u_int16_t *counter))is_reauth;
+	this->public.provider.gen_reauth = (identification_t*(*)(sim_provider_t*, identification_t *id, char mk[HASH_SIZE_SHA1]))gen_reauth;
+	this->public.destroy = (void(*)(eap_simaka_reauth_provider_t*))destroy;
+
+	this->rng = lib->crypto->create_rng(lib->crypto, RNG_WEAK);
+	if (!this->rng)
+	{
+		free(this);
+		return NULL;
+	}
+	this->permanent = hashtable_create((void*)hash, (void*)equals, 0);
+	this->reauth = hashtable_create((void*)hash, (void*)equals, 0);
+
+	return &this->public;
+}
+
diff --git a/src/libcharon/plugins/eap_simaka_reauth/eap_simaka_reauth_provider.h b/src/libcharon/plugins/eap_simaka_reauth/eap_simaka_reauth_provider.h
new file mode 100644
index 000000000..7ae151a27
--- /dev/null
+++ b/src/libcharon/plugins/eap_simaka_reauth/eap_simaka_reauth_provider.h
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2009 Martin Willi
+ * Hochschule fuer Technik Rapperswil
+ *
+ * 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 eap_simaka_reauth_provider eap_simaka_reauth_provider
+ * @{ @ingroup eap_simaka_reauth
+ */
+
+#ifndef EAP_SIMAKA_REAUTH_PROVIDER_H_
+#define EAP_SIMAKA_REAUTH_PROVIDER_H_
+
+#include <sa/authenticators/eap/sim_manager.h>
+
+typedef struct eap_simaka_reauth_provider_t eap_simaka_reauth_provider_t;
+
+/**
+ * SIM provider implementing volatile in-memory reauthentication data storage.
+ */
+struct eap_simaka_reauth_provider_t {
+
+	/**
+	 * Implements sim_provider_t interface.
+	 */
+	sim_provider_t provider;
+
+	/**
+	 * Destroy a eap_simaka_reauth_provider_t.
+	 */
+	void (*destroy)(eap_simaka_reauth_provider_t *this);
+};
+
+/**
+ * Create a eap_simaka_reauth_provider instance.
+ */
+eap_simaka_reauth_provider_t *eap_simaka_reauth_provider_create();
+
+#endif /** EAP_SIMAKA_REAUTH_PROVIDER_H_ @}*/