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Moved reauth/pseudonym functionality from eap-sim-file to separate plugins, usable by any SIM/AKA backend

This commit is contained in:
Martin Willi 2009-10-28 15:34:05 +01:00
parent acb561373a
commit edcb2dd35b
18 changed files with 1215 additions and 375 deletions
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6
configure.in
View File

@ -100,6 +100,8 @@ ARG_ENABL_SET([unit-tests], [enable unit tests on IKEv2 daemon startup.])
ARG_ENABL_SET([load-tester], [enable load testing plugin for IKEv2 daemon.])
ARG_ENABL_SET([eap-sim], [enable SIM authenication module for EAP.])
ARG_ENABL_SET([eap-sim-file], [enable EAP-SIM backend based on a triplet file.])
ARG_ENABL_SET([eap-simaka-pseudonym], [enable EAP-SIM/AKA pseudonym storage plugin.])
ARG_ENABL_SET([eap-simaka-reauth], [enable EAP-SIM/AKA reauthentication data storage plugin.])
ARG_ENABL_SET([eap-identity], [enable EAP module providing EAP-Identity helper.])
ARG_ENABL_SET([eap-md5], [enable EAP MD5 (CHAP) authenication module.])
ARG_ENABL_SET([eap-gtc], [enable PAM based EAP GTC authenication module.])
@ -712,6 +714,8 @@ AM_CONDITIONAL(USE_UNIT_TESTS, test x$unit_tests = xtrue)
AM_CONDITIONAL(USE_LOAD_TESTER, test x$load_tester = xtrue)
AM_CONDITIONAL(USE_EAP_SIM, test x$eap_sim = xtrue)
AM_CONDITIONAL(USE_EAP_SIM_FILE, test x$eap_sim_file = xtrue)
AM_CONDITIONAL(USE_EAP_SIMAKA_PSEUDONYM, test x$eap_simaka_pseudonym = xtrue)
AM_CONDITIONAL(USE_EAP_SIMAKA_REAUTH, test x$eap_simaka_reauth = xtrue)
AM_CONDITIONAL(USE_EAP_IDENTITY, test x$eap_identity = xtrue)
AM_CONDITIONAL(USE_EAP_MD5, test x$eap_md5 = xtrue)
AM_CONDITIONAL(USE_EAP_GTC, test x$eap_gtc = xtrue)
@ -809,6 +813,8 @@ AC_OUTPUT(
src/charon/plugins/eap_gtc/Makefile
src/charon/plugins/eap_sim/Makefile
src/charon/plugins/eap_sim_file/Makefile
src/charon/plugins/eap_simaka_pseudonym/Makefile
src/charon/plugins/eap_simaka_reauth/Makefile
src/charon/plugins/eap_mschapv2/Makefile
src/charon/plugins/eap_radius/Makefile
src/charon/plugins/kernel_netlink/Makefile

10
src/charon/Makefile.am
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@ -200,6 +200,16 @@ if USE_EAP_SIM_FILE
PLUGINS += eap-sim-file
endif
if USE_EAP_SIMAKA_PSEUDONYM
SUBDIRS += plugins/eap_simaka_pseudonym
PLUGINS += eap-simaka-pseudonym
endif
if USE_EAP_SIMAKA_REAUTH
SUBDIRS += plugins/eap_simaka_reauth
PLUGINS += eap-simaka-reauth
endif
if USE_EAP_MD5
SUBDIRS += plugins/eap_md5
PLUGINS += eap-md5

169
src/charon/plugins/eap_sim_file/eap_sim_file_card.c
View File

@ -16,7 +16,6 @@
#include "eap_sim_file_card.h"
#include <daemon.h>
#include <utils/hashtable.h>
typedef struct private_eap_sim_file_card_t private_eap_sim_file_card_t;
@ -34,50 +33,8 @@ struct private_eap_sim_file_card_t {
* source of triplets
*/
eap_sim_file_triplets_t *triplets;
/**
* Permanent -> pseudonym mappings
*/
hashtable_t *pseudonym;
/**
* Permanent -> reauth_data_t mappings
*/
hashtable_t *reauth;
/**
* Reverse pseudonym -> permanent mappings
*/
hashtable_t *permanent;
};
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_triplet
*/
@ -111,90 +68,6 @@ static bool get_triplet(private_eap_sim_file_card_t *this,
return FALSE;
}
/**
* Implementation of sim_card_t.get_pseudonym
*/
static identification_t *get_pseudonym(private_eap_sim_file_card_t *this,
identification_t *id)
{
identification_t *pseudonym;
pseudonym = this->pseudonym->get(this->pseudonym, id);
if (pseudonym)
{
return pseudonym->clone(pseudonym);
}
return NULL;
}
/**
* Implementation of sim_card_t.set_pseudonym
*/
static void set_pseudonym(private_eap_sim_file_card_t *this,
identification_t *id, identification_t *pseudonym)
{
identification_t *permanent;
/* create new entries */
id = id->clone(id);
pseudonym = pseudonym->clone(pseudonym);
permanent = this->permanent->put(this->permanent, pseudonym, id);
pseudonym = this->pseudonym->put(this->pseudonym, id, pseudonym);
/* delete old entries */
DESTROY_IF(permanent);
DESTROY_IF(pseudonym);
}
/**
* Implementation of sim_card_t.get_reauth
*/
static identification_t *get_reauth(private_eap_sim_file_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_sim_file_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
*/
@ -208,37 +81,6 @@ static bool get_quintuplet()
*/
static void destroy(private_eap_sim_file_card_t *this)
{
enumerator_t *enumerator;
identification_t *id;
reauth_data_t *data;
void *key;
enumerator = this->pseudonym->create_enumerator(this->pseudonym);
while (enumerator->enumerate(enumerator, &key, &id))
{
id->destroy(id);
}
enumerator->destroy(enumerator);
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);
data->permanent->destroy(data->permanent);
free(data);
}
enumerator->destroy(enumerator);
this->pseudonym->destroy(this->pseudonym);
this->permanent->destroy(this->permanent);
this->reauth->destroy(this->reauth);
free(this);
}
@ -252,16 +94,13 @@ eap_sim_file_card_t *eap_sim_file_card_create(eap_sim_file_triplets_t *triplets)
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]))get_triplet;
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_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))get_pseudonym;
this->public.card.set_pseudonym = (void(*)(sim_card_t*, identification_t *id, identification_t *pseudonym))set_pseudonym;
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.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))return_null;
this->public.card.set_reauth = (void(*)(sim_card_t*, identification_t *id, identification_t* next, char mk[HASH_SIZE_SHA1], u_int16_t counter))nop;
this->public.destroy = (void(*)(eap_sim_file_card_t*))destroy;
this->triplets = triplets;
this->pseudonym = hashtable_create((void*)hash, (void*)equals, 0);
this->permanent = hashtable_create((void*)hash, (void*)equals, 0);
this->reauth = hashtable_create((void*)hash, (void*)equals, 0);
return &this->public;
}

214
src/charon/plugins/eap_sim_file/eap_sim_file_provider.c
View File

@ -16,7 +16,6 @@
#include "eap_sim_file_provider.h"
#include <daemon.h>
#include <utils/hashtable.h>
typedef struct private_eap_sim_file_provider_t private_eap_sim_file_provider_t;
@ -34,53 +33,8 @@ struct private_eap_sim_file_provider_t {
* source of triplets
*/
eap_sim_file_triplets_t *triplets;
/**
* Permanent -> pseudonym mappings
*/
hashtable_t *pseudonym;
/**
* Permanent -> reauth_data_t mappings
*/
hashtable_t *reauth;
/**
* Reverse pseudonym/reauth -> permanent mappings
*/
hashtable_t *permanent;
/**
* RNG for pseudonyms/reauth identities
*/
rng_t *rng;
};
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);
}
/**
* Implementation of sim_provider_t.get_triplet
*/
@ -107,162 +61,11 @@ static bool get_triplet(private_eap_sim_file_provider_t *this,
return FALSE;
}
/**
* Implementation of sim_provider_t.is_pseudonym
*/
static identification_t* is_pseudonym(private_eap_sim_file_provider_t *this,
identification_t *id)
{
identification_t *permanent;
permanent = this->permanent->get(this->permanent, id);
if (permanent)
{
return permanent->clone(permanent);
}
return NULL;
}
/**
* Generate a random identity
*/
static identification_t *gen_identity(private_eap_sim_file_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.get_pseudonym
*/
static identification_t* gen_pseudonym(private_eap_sim_file_provider_t *this,
identification_t *id)
{
identification_t *pseudonym, *permanent;
/* remove old entry */
pseudonym = this->pseudonym->remove(this->pseudonym, id);
if (pseudonym)
{
permanent = this->permanent->remove(this->permanent, pseudonym);
if (permanent)
{
permanent->destroy(permanent);
}
pseudonym->destroy(pseudonym);
}
pseudonym = gen_identity(this);
/* create new entries */
id = id->clone(id);
this->pseudonym->put(this->pseudonym, id, pseudonym);
this->permanent->put(this->permanent, pseudonym, id);
return pseudonym->clone(pseudonym);
}
/**
* Implementation of sim_provider_t.is_reauth
*/
static identification_t *is_reauth(private_eap_sim_file_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_sim_file_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);
id = id->clone(id);
if (data)
{ /* update existing entry */
permanent = this->permanent->remove(this->permanent, data->id);
if (permanent)
{
permanent->destroy(permanent);
}
data->id->destroy(data->id);
}
else
{ /* generate new entry */
data = malloc_thing(reauth_data_t);
data->counter = 0;
this->reauth->put(this->reauth, id, data);
}
memcpy(data->mk, mk, HASH_SIZE_SHA1);
data->id = gen_identity(this);
this->permanent->put(this->permanent, data->id, id);
return data->id->clone(data->id);
}
/**
* Implementation of eap_sim_file_provider_t.destroy.
*/
static void destroy(private_eap_sim_file_provider_t *this)
{
enumerator_t *enumerator;
identification_t *id;
reauth_data_t *data;
void *key;
enumerator = this->pseudonym->create_enumerator(this->pseudonym);
while (enumerator->enumerate(enumerator, &key, &id))
{
id->destroy(id);
}
enumerator->destroy(enumerator);
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->pseudonym->destroy(this->pseudonym);
this->permanent->destroy(this->permanent);
this->reauth->destroy(this->reauth);
this->rng->destroy(this->rng);
free(this);
}
@ -277,22 +80,13 @@ eap_sim_file_provider_t *eap_sim_file_provider_create(
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]))get_triplet;
this->public.provider.get_quintuplet = (bool(*)(sim_provider_t*, identification_t *id, char rand[AKA_RAND_LEN], char xres[AKA_RES_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))is_pseudonym;
this->public.provider.gen_pseudonym = (identification_t*(*)(sim_provider_t*, identification_t *id))gen_pseudonym;
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.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))return_null;
this->public.provider.gen_reauth = (identification_t*(*)(sim_provider_t*, identification_t *id, char mk[HASH_SIZE_SHA1]))return_null;
this->public.destroy = (void(*)(eap_sim_file_provider_t*))destroy;
this->triplets = triplets;
this->rng = lib->crypto->create_rng(lib->crypto, RNG_WEAK);
if (!this->rng)
{
free(this);
return NULL;
}
this->pseudonym = hashtable_create((void*)hash, (void*)equals, 0);
this->permanent = hashtable_create((void*)hash, (void*)equals, 0);
this->reauth = hashtable_create((void*)hash, (void*)equals, 0);
return &this->public;
}

13
src/charon/plugins/eap_simaka_pseudonym/Makefile.am Normal file
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@ -0,0 +1,13 @@
INCLUDES = -I$(top_srcdir)/src/libstrongswan -I$(top_srcdir)/src/charon
AM_CFLAGS = -rdynamic
plugin_LTLIBRARIES = libstrongswan-eap-simaka-pseudonym.la
libstrongswan_eap_simaka_pseudonym_la_SOURCES = \
eap_simaka_pseudonym_plugin.h eap_simaka_pseudonym_plugin.c \
eap_simaka_pseudonym_card.h eap_simaka_pseudonym_card.c \
eap_simaka_pseudonym_provider.h eap_simaka_pseudonym_provider.c
libstrongswan_eap_simaka_pseudonym_la_LDFLAGS = -module -avoid-version

154
src/charon/plugins/eap_simaka_pseudonym/eap_simaka_pseudonym_card.c Normal file
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@ -0,0 +1,154 @@
/*
* 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_pseudonym_card.h"
#include <daemon.h>
#include <utils/hashtable.h>
typedef struct private_eap_simaka_pseudonym_card_t private_eap_simaka_pseudonym_card_t;
/**
* Private data of an eap_simaka_pseudonym_card_t object.
*/
struct private_eap_simaka_pseudonym_card_t {
/**
* Public eap_simaka_pseudonym_card_t interface.
*/
eap_simaka_pseudonym_card_t public;
/**
* Permanent -> pseudonym mappings
*/
hashtable_t *pseudonym;
/**
* Reverse pseudonym -> permanent mappings
*/
hashtable_t *permanent;
};
/**
* 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_pseudonym
*/
static identification_t *get_pseudonym(private_eap_simaka_pseudonym_card_t *this,
identification_t *id)
{
identification_t *pseudonym;
pseudonym = this->pseudonym->get(this->pseudonym, id);
if (pseudonym)
{
return pseudonym->clone(pseudonym);
}
return NULL;
}
/**
* Implementation of sim_card_t.set_pseudonym
*/
static void set_pseudonym(private_eap_simaka_pseudonym_card_t *this,
identification_t *id, identification_t *pseudonym)
{
identification_t *permanent;
/* create new entries */
id = id->clone(id);
pseudonym = pseudonym->clone(pseudonym);
permanent = this->permanent->put(this->permanent, pseudonym, id);
pseudonym = this->pseudonym->put(this->pseudonym, id, pseudonym);
/* delete old entries */
DESTROY_IF(permanent);
DESTROY_IF(pseudonym);
}
/**
* Implementation of sim_card_t.get_quintuplet
*/
static bool get_quintuplet()
{
return NOT_SUPPORTED;
}
/**
* Implementation of eap_simaka_pseudonym_card_t.destroy.
*/
static void destroy(private_eap_simaka_pseudonym_card_t *this)
{
enumerator_t *enumerator;
identification_t *id;
void *key;
enumerator = this->pseudonym->create_enumerator(this->pseudonym);
while (enumerator->enumerate(enumerator, &key, &id))
{
id->destroy(id);
}
enumerator->destroy(enumerator);
enumerator = this->permanent->create_enumerator(this->permanent);
while (enumerator->enumerate(enumerator, &key, &id))
{
id->destroy(id);
}
enumerator->destroy(enumerator);
this->pseudonym->destroy(this->pseudonym);
this->permanent->destroy(this->permanent);
free(this);
}
/**
* See header
*/
eap_simaka_pseudonym_card_t *eap_simaka_pseudonym_card_create()
{
private_eap_simaka_pseudonym_card_t *this;
this = malloc_thing(private_eap_simaka_pseudonym_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_false;
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_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))get_pseudonym;
this->public.card.set_pseudonym = (void(*)(sim_card_t*, identification_t *id, identification_t *pseudonym))set_pseudonym;
this->public.card.get_reauth = (identification_t*(*)(sim_card_t*, identification_t *id, char mk[HASH_SIZE_SHA1], u_int16_t *counter))return_null;
this->public.card.set_reauth = (void(*)(sim_card_t*, identification_t *id, identification_t* next, char mk[HASH_SIZE_SHA1], u_int16_t counter))nop;
this->public.destroy = (void(*)(eap_simaka_pseudonym_card_t*))destroy;
this->pseudonym = hashtable_create((void*)hash, (void*)equals, 0);
this->permanent = hashtable_create((void*)hash, (void*)equals, 0);
return &this->public;
}

49
src/charon/plugins/eap_simaka_pseudonym/eap_simaka_pseudonym_card.h Normal file
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/*
* 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_pseudonym_card eap_simaka_pseudonym_card
* @{ @ingroup eap_simaka_pseudonym
*/
#ifndef EAP_SIMAKA_PSEUDONYM_CARD_H_
#define EAP_SIMAKA_PSEUDONYM_CARD_H_
#include <sa/authenticators/eap/sim_manager.h>
typedef struct eap_simaka_pseudonym_card_t eap_simaka_pseudonym_card_t;
/**
* SIM card implementing volatile in-memory pseudonym storage.
*/
struct eap_simaka_pseudonym_card_t {
/**
* Implements sim_card_t interface
*/
sim_card_t card;
/**
* Destroy a eap_simaka_pseudonym_card_t.
*/
void (*destroy)(eap_simaka_pseudonym_card_t *this);
};
/**
* Create a eap_simaka_pseudonym_card instance.
*/
eap_simaka_pseudonym_card_t *eap_simaka_pseudonym_card_create();
#endif /** EAP_SIMAKA_PSEUDONYM_CARD_H_ @}*/

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src/charon/plugins/eap_simaka_pseudonym/eap_simaka_pseudonym_plugin.c Normal file
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/*
* 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_pseudonym_plugin.h"
#include "eap_simaka_pseudonym_card.h"
#include "eap_simaka_pseudonym_provider.h"
#include <daemon.h>
typedef struct private_eap_simaka_pseudonym_t private_eap_simaka_pseudonym_t;
/**
* Private data of an eap_simaka_pseudonym_t object.
*/
struct private_eap_simaka_pseudonym_t {
/**
* Public eap_simaka_pseudonym_plugin_t interface.
*/
eap_simaka_pseudonym_plugin_t public;
/**
* SIM card
*/
eap_simaka_pseudonym_card_t *card;
/**
* SIM provider
*/
eap_simaka_pseudonym_provider_t *provider;
};
/**
* Implementation of eap_simaka_pseudonym_t.destroy.
*/
static void destroy(private_eap_simaka_pseudonym_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 *plugin_create()
{
private_eap_simaka_pseudonym_t *this;
this = malloc_thing(private_eap_simaka_pseudonym_t);
this->public.plugin.destroy = (void(*)(plugin_t*))destroy;
this->provider = eap_simaka_pseudonym_provider_create();
if (!this->provider)
{
free(this);
return NULL;
}
this->card = eap_simaka_pseudonym_card_create();
charon->sim->add_card(charon->sim, &this->card->card);
charon->sim->add_provider(charon->sim, &this->provider->provider);
return &this->public.plugin;
}

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src/charon/plugins/eap_simaka_pseudonym/eap_simaka_pseudonym_plugin.h Normal file
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/*
* 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_pseudonym eap_simaka_pseudonym
* @ingroup cplugins
*
* @defgroup eap_simaka_pseudonym_plugin eap_simaka_pseudonym_plugin
* @{ @ingroup eap_simaka_pseudonym
*/
#ifndef EAP_SIMAKA_PSEUDONYM_PLUGIN_H_
#define EAP_SIMAKA_PSEUDONYM_PLUGIN_H_
#include <plugins/plugin.h>
typedef struct eap_simaka_pseudonym_plugin_t eap_simaka_pseudonym_plugin_t;
/**
* Plugin to provide in-memory storage of EAP-SIM/AKA pseudonyms.
*/
struct eap_simaka_pseudonym_plugin_t {
/**
* implements plugin interface
*/
plugin_t plugin;
};
/**
* Create a eap_simaka_pseudonym_plugin instance.
*/
plugin_t *plugin_create();
#endif /** EAP_SIMAKA_PSEUDONYM_PLUGIN_H_ @}*/

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src/charon/plugins/eap_simaka_pseudonym/eap_simaka_pseudonym_provider.c Normal file
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/*
* 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_pseudonym_provider.h"
#include <utils/hashtable.h>
typedef struct private_eap_simaka_pseudonym_provider_t private_eap_simaka_pseudonym_provider_t;
/**
* Private data of an eap_simaka_pseudonym_provider_t object.
*/
struct private_eap_simaka_pseudonym_provider_t {
/**
* Public eap_simaka_pseudonym_provider_t interface.
*/
eap_simaka_pseudonym_provider_t public;
/**
* Permanent -> pseudonym mappings
*/
hashtable_t *pseudonym;
/**
* Reverse pseudonym -> permanent mappings
*/
hashtable_t *permanent;
/**
* RNG for pseudonyms/reauth identities
*/
rng_t *rng;
};
/**
* 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_provider_t.is_pseudonym
*/
static identification_t* is_pseudonym(
private_eap_simaka_pseudonym_provider_t *this, identification_t *id)
{
identification_t *permanent;
permanent = this->permanent->get(this->permanent, id);
if (permanent)
{
return permanent->clone(permanent);
}
return NULL;
}
/**
* Generate a random identity
*/
static identification_t *gen_identity(
private_eap_simaka_pseudonym_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.get_pseudonym
*/
static identification_t* gen_pseudonym(
private_eap_simaka_pseudonym_provider_t *this, identification_t *id)
{
identification_t *pseudonym, *permanent;
/* remove old entry */
pseudonym = this->pseudonym->remove(this->pseudonym, id);
if (pseudonym)
{
permanent = this->permanent->remove(this->permanent, pseudonym);
if (permanent)
{
permanent->destroy(permanent);
}
pseudonym->destroy(pseudonym);
}
pseudonym = gen_identity(this);
/* create new entries */
id = id->clone(id);
this->pseudonym->put(this->pseudonym, id, pseudonym);
this->permanent->put(this->permanent, pseudonym, id);
return pseudonym->clone(pseudonym);
}
/**
* Implementation of eap_simaka_pseudonym_provider_t.destroy.
*/
static void destroy(private_eap_simaka_pseudonym_provider_t *this)
{
enumerator_t *enumerator;
identification_t *id;
void *key;
enumerator = this->pseudonym->create_enumerator(this->pseudonym);
while (enumerator->enumerate(enumerator, &key, &id))
{
id->destroy(id);
}
enumerator->destroy(enumerator);
enumerator = this->permanent->create_enumerator(this->permanent);
while (enumerator->enumerate(enumerator, &key, &id))
{
id->destroy(id);
}
enumerator->destroy(enumerator);
this->pseudonym->destroy(this->pseudonym);
this->permanent->destroy(this->permanent);
this->rng->destroy(this->rng);
free(this);
}
/**
* See header
*/
eap_simaka_pseudonym_provider_t *eap_simaka_pseudonym_provider_create()
{
private_eap_simaka_pseudonym_provider_t *this;
this = malloc_thing(private_eap_simaka_pseudonym_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_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))is_pseudonym;
this->public.provider.gen_pseudonym = (identification_t*(*)(sim_provider_t*, identification_t *id))gen_pseudonym;
this->public.provider.is_reauth = (identification_t*(*)(sim_provider_t*, identification_t *id, char [HASH_SIZE_SHA1], u_int16_t *counter))return_null;
this->public.provider.gen_reauth = (identification_t*(*)(sim_provider_t*, identification_t *id, char mk[HASH_SIZE_SHA1]))return_null;
this->public.destroy = (void(*)(eap_simaka_pseudonym_provider_t*))destroy;
this->rng = lib->crypto->create_rng(lib->crypto, RNG_WEAK);
if (!this->rng)
{
free(this);
return NULL;
}
this->pseudonym = hashtable_create((void*)hash, (void*)equals, 0);
this->permanent = hashtable_create((void*)hash, (void*)equals, 0);
return &this->public;
}

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src/charon/plugins/eap_simaka_pseudonym/eap_simaka_pseudonym_provider.h Normal file
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/*
* 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_pseudonym_provider eap_simaka_pseudonym_provider
* @{ @ingroup eap_simaka_pseudonym
*/
#ifndef EAP_SIMAKA_PSEDUONYM_PROVIDER_H_
#define EAP_SIMAKA_PSEDUONYM_PROVIDER_H_
#include <sa/authenticators/eap/sim_manager.h>
typedef struct eap_simaka_pseudonym_provider_t eap_simaka_pseudonym_provider_t;
/**
* SIM provider implementing volatile in-memory pseudonym storage.
*/
struct eap_simaka_pseudonym_provider_t {
/**
* Implements sim_provider_t interface.
*/
sim_provider_t provider;
/**
* Destroy a eap_simaka_pseudonym_provider_t.
*/
void (*destroy)(eap_simaka_pseudonym_provider_t *this);
};
/**
* Create a eap_simaka_pseudonym_provider instance.
*/
eap_simaka_pseudonym_provider_t *eap_simaka_pseudonym_provider_create();
#endif /** EAP_SIMAKA_PSEDUONYM_PROVIDER_H_ @}*/

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src/charon/plugins/eap_simaka_reauth/Makefile.am Normal file
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INCLUDES = -I$(top_srcdir)/src/libstrongswan -I$(top_srcdir)/src/charon
AM_CFLAGS = -rdynamic
plugin_LTLIBRARIES = libstrongswan-eap-simaka-reauth.la
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

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src/charon/plugins/eap_simaka_reauth/eap_simaka_reauth_card.c Normal file
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/*
* 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 bool 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_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;
}

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src/charon/plugins/eap_simaka_reauth/eap_simaka_reauth_card.h Normal file
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/*
* 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_ @}*/

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src/charon/plugins/eap_simaka_reauth/eap_simaka_reauth_plugin.c Normal file
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/*
* 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 *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;
}

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src/charon/plugins/eap_simaka_reauth/eap_simaka_reauth_plugin.h Normal file
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/*
* 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;
};
/**
* Create a eap_simaka_reauth_plugin instance.
*/
plugin_t *plugin_create();
#endif /** EAP_SIMAKA_REAUTH_PLUGIN_H_ @}*/

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/*
* 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);
id = id->clone(id);
if (data)
{ /* update existing entry */
permanent = this->permanent->remove(this->permanent, data->id);
if (permanent)
{
permanent->destroy(permanent);
}
data->id->destroy(data->id);
}
else
{ /* generate new entry */
data = malloc_thing(reauth_data_t);
data->counter = 0;
this->reauth->put(this->reauth, id, data);
}
memcpy(data->mk, mk, HASH_SIZE_SHA1);
data->id = gen_identity(this);
this->permanent->put(this->permanent, data->id, id);
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_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;
}

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/*
* 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_ @}*/