tests/unit/security/validator.t.cpp - ndn-cxx - Gitiles

 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
  * Copyright (c) 2013-2022 Regents of the University of California.
  *
  * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
  *
  * ndn-cxx library is free software: you can redistribute it and/or modify it under the
  * terms of the GNU Lesser General Public License as published by the Free Software
  * Foundation, either version 3 of the License, or (at your option) any later version.
  *
  * ndn-cxx library 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 Lesser General Public License for more details.
  *
  * You should have received copies of the GNU General Public License and GNU Lesser
  * General Public License along with ndn-cxx, e.g., in COPYING.md file.  If not, see
  * <http://www.gnu.org/licenses/>.
  *
  * See AUTHORS.md for complete list of ndn-cxx authors and contributors.
  */

 #include "ndn-cxx/security/validator.hpp"
 #include "ndn-cxx/security/validation-policy-simple-hierarchy.hpp"

 #include "tests/test-common.hpp"
 #include "tests/unit/security/validator-fixture.hpp"

 namespace ndn {
 namespace security {
 inline namespace v2 {
 namespace tests {

 using namespace ndn::tests;

 BOOST_AUTO_TEST_SUITE(Security)
 BOOST_FIXTURE_TEST_SUITE(TestValidator, HierarchicalValidatorFixture<ValidationPolicySimpleHierarchy>)

 BOOST_AUTO_TEST_CASE(ConstructorSetValidator)
 {
   auto middlePolicy = make_unique<ValidationPolicySimpleHierarchy>();
   auto innerPolicy = make_unique<ValidationPolicySimpleHierarchy>();

   validator.getPolicy().setInnerPolicy(std::move(middlePolicy));
   validator.getPolicy().setInnerPolicy(std::move(innerPolicy));

   BOOST_CHECK(validator.getPolicy().m_validator != nullptr);
   BOOST_CHECK(validator.getPolicy().getInnerPolicy().m_validator != nullptr);
   BOOST_CHECK(validator.getPolicy().getInnerPolicy().getInnerPolicy().m_validator != nullptr);

   BOOST_CHECK_THROW(validator.getPolicy().setInnerPolicy(nullptr), std::invalid_argument);
 }

 BOOST_AUTO_TEST_CASE(BadSignatureInfo)
 {
   Interest interest("/Security/ValidatorFixture/Sub1/Sub2/Interest");
   m_keyChain.sign(interest, signingByIdentity(subIdentity)
                             .setSignedInterestFormat(SignedInterestFormat::V03));

   // add an unrecognized critical element inside InterestSignatureInfo
   auto si = interest.getSignatureInfo().value();
   si.addCustomTlv("7F00"_block);
   interest.setSignatureInfo(si);
   BOOST_REQUIRE_THROW(interest.getSignatureInfo(), tlv::Error);
   BOOST_REQUIRE_NO_THROW(interest.getSignatureValue());

   VALIDATE_FAILURE(interest, "InterestSignatureInfo decoding should fail");
   BOOST_TEST(lastError.getCode() == ValidationError::MALFORMED_SIGNATURE);
   BOOST_TEST(face.sentInterests.size() == 0);
 }

 BOOST_AUTO_TEST_CASE(BadSignatureValue)
 {
   const uint8_t sv[] = {0x12, 0x34, 0x56, 0x78};

   Interest interest("/Security/ValidatorFixture/Sub1/Sub2/Interest");
   m_keyChain.sign(interest, signingByIdentity(subIdentity)
                             .setSignedInterestFormat(SignedInterestFormat::V03));
   interest.setSignatureValue(sv);

   VALIDATE_FAILURE(interest, "Signature check should fail");
   BOOST_TEST(lastError.getCode() == ValidationError::INVALID_SIGNATURE);
   BOOST_TEST(face.sentInterests.size() == 1);

   Data data("/Security/ValidatorFixture/Sub1/Sub2/Data");
   m_keyChain.sign(data, signingByIdentity(subIdentity));
   data.setSignatureValue(sv);

   VALIDATE_FAILURE(data, "Signature check should fail");
   BOOST_TEST(lastError.getCode() == ValidationError::INVALID_SIGNATURE);
   BOOST_TEST(face.sentInterests.size() == 1);
 }

 BOOST_AUTO_TEST_CASE(Timeout)
 {
   processInterest = nullptr; // no response for any interest

   Data data("/Security/ValidatorFixture/Sub1/Sub2/Data");
   m_keyChain.sign(data, signingByIdentity(subIdentity));

   VALIDATE_FAILURE(data, "Should fail to retrieve certificate");
   BOOST_TEST(lastError.getCode() == ValidationError::CANNOT_RETRIEVE_CERT);
   BOOST_TEST(face.sentInterests.size() == 4);
 }

 BOOST_AUTO_TEST_CASE(Nack)
 {
   processInterest = [this] (const Interest& interest) {
     face.receive(makeNack(interest, lp::NackReason::NO_ROUTE));
   };

   Data data("/Security/ValidatorFixture/Sub1/Sub2/Data");
   m_keyChain.sign(data, signingByIdentity(subIdentity));

   VALIDATE_FAILURE(data, "All interests should get NACKed");
   BOOST_TEST(lastError.getCode() == ValidationError::CANNOT_RETRIEVE_CERT);
   // 1 for the first interest, 3 for the retries on nack
   BOOST_TEST(face.sentInterests.size() == 4);
 }

 BOOST_AUTO_TEST_CASE(MalformedCert)
 {
   Data malformedCert = subIdentity.getDefaultKey().getDefaultCertificate();
   malformedCert.setContentType(tlv::ContentType_Blob);
   m_keyChain.sign(malformedCert, signingByIdentity(identity));
   // wrong content type & missing ValidityPeriod
   BOOST_REQUIRE_THROW(Certificate(malformedCert.wireEncode()), tlv::Error);

   auto originalProcessInterest = processInterest;
   processInterest = [&] (const Interest& interest) {
     if (interest.getName().isPrefixOf(malformedCert.getName())) {
       face.receive(malformedCert);
     }
     else {
       originalProcessInterest(interest);
     }
   };

   Data data("/Security/ValidatorFixture/Sub1/Sub2/Data");
   m_keyChain.sign(data, signingByIdentity(subIdentity));

   VALIDATE_FAILURE(data, "Signed by a malformed certificate");
   BOOST_TEST(lastError.getCode() == ValidationError::MALFORMED_CERT);
   BOOST_TEST(face.sentInterests.size() == 1);
 }

 BOOST_AUTO_TEST_CASE(ExpiredCert)
 {
   Data expiredCert = subIdentity.getDefaultKey().getDefaultCertificate();
   SignatureInfo info;
   info.setValidityPeriod(ValidityPeriod::makeRelative(-2_h, -1_h));
   m_keyChain.sign(expiredCert, signingByIdentity(identity).setSignatureInfo(info));
   BOOST_REQUIRE_NO_THROW(Certificate(expiredCert.wireEncode()));

   auto originalProcessInterest = processInterest;
   processInterest = [&] (const Interest& interest) {
     if (interest.getName().isPrefixOf(expiredCert.getName())) {
       face.receive(expiredCert);
     }
     else {
       originalProcessInterest(interest);
     }
   };

   Data data("/Security/ValidatorFixture/Sub1/Sub2/Data");
   m_keyChain.sign(data, signingByIdentity(subIdentity));

   VALIDATE_FAILURE(data, "Signed by an expired certificate");
   BOOST_TEST(lastError.getCode() == ValidationError::EXPIRED_CERT);
   BOOST_TEST(face.sentInterests.size() == 1);
 }

 BOOST_AUTO_TEST_CASE(ResetAnchors)
 {
   validator.resetAnchors();

   Data data("/Security/ValidatorFixture/Sub1/Sub2/Data");
   m_keyChain.sign(data, signingByIdentity(subIdentity));
   VALIDATE_FAILURE(data, "Should fail, as no anchors configured");
   BOOST_TEST(lastError.getCode() == ValidationError::LOOP_DETECTED);
 }

 BOOST_AUTO_TEST_CASE(TrustedCertCaching)
 {
   Data data("/Security/ValidatorFixture/Sub1/Sub2/Data");
   m_keyChain.sign(data, signingByIdentity(subIdentity));

   VALIDATE_SUCCESS(data, "Should get accepted, as signed by the policy-compliant cert");
   BOOST_TEST(face.sentInterests.size() == 1);
   face.sentInterests.clear();

   processInterest = nullptr; // disable data responses from mocked network

   VALIDATE_SUCCESS(data, "Should get accepted, based on the cached trusted cert");
   BOOST_TEST(face.sentInterests.size() == 0);
   face.sentInterests.clear();

   advanceClocks(1_h, 2); // expire trusted cache

   VALIDATE_FAILURE(data, "Should try and fail to retrieve certs");
   BOOST_TEST(lastError.getCode() == ValidationError::CANNOT_RETRIEVE_CERT);
   BOOST_TEST(face.sentInterests.size() > 1);
 }

 BOOST_AUTO_TEST_CASE(ResetVerifiedCerts)
 {
   Data data("/Security/ValidatorFixture/Sub1/Sub2/Data");
   m_keyChain.sign(data, signingByIdentity(subIdentity));
   VALIDATE_SUCCESS(data, "Should get accepted, as signed by the policy-compliant cert");

   // reset anchors
   validator.resetAnchors();
   VALIDATE_SUCCESS(data, "Should get accepted, as signed by the cert in trusted cache");

   // reset trusted cache
   validator.resetVerifiedCertificates();
   VALIDATE_FAILURE(data, "Should fail, as no trusted cache or anchors");
   BOOST_TEST(lastError.getCode() == ValidationError::LOOP_DETECTED);
 }

 BOOST_AUTO_TEST_CASE(UntrustedCertCaching)
 {
   Data data("/Security/ValidatorFixture/Sub1/Sub2/Data");
   m_keyChain.sign(data, signingByIdentity(subSelfSignedIdentity));

   VALIDATE_FAILURE(data, "Should fail, as signed by the policy-violating cert");
   BOOST_TEST(lastError.getCode() == ValidationError::LOOP_DETECTED);
   BOOST_TEST(face.sentInterests.size() == 1);
   face.sentInterests.clear();

   processInterest = nullptr; // disable data responses from mocked network

   VALIDATE_FAILURE(data, "Should fail again, but no network operations expected");
   BOOST_TEST(lastError.getCode() == ValidationError::LOOP_DETECTED);
   BOOST_TEST(face.sentInterests.size() == 0);
   face.sentInterests.clear();

   advanceClocks(10_min, 2); // expire untrusted cache

   VALIDATE_FAILURE(data, "Should try and fail to retrieve certs");
   BOOST_TEST(lastError.getCode() == ValidationError::CANNOT_RETRIEVE_CERT);
   BOOST_TEST(face.sentInterests.size() > 1);
 }

 class ValidationPolicySimpleHierarchyForInterestOnly : public ValidationPolicySimpleHierarchy
 {
 public:
   void
   checkPolicy(const Data&, const shared_ptr<ValidationState>& state,
               const ValidationContinuation& continueValidation) override
   {
     continueValidation(nullptr, state);
   }
 };

 BOOST_FIXTURE_TEST_CASE(ValidateInterestsButBypassForData,
                         HierarchicalValidatorFixture<ValidationPolicySimpleHierarchyForInterestOnly>)
 {
   Interest interest("/Security/ValidatorFixture/Sub1/Sub2/Interest");
   Data data("/Security/ValidatorFixture/Sub1/Sub2/Data");

   VALIDATE_FAILURE(interest, "Unsigned");
   BOOST_TEST(lastError.getCode() == ValidationError::MALFORMED_SIGNATURE);
   VALIDATE_SUCCESS(data, "Policy bypasses validation for all data");
   BOOST_TEST(face.sentInterests.size() == 0);
   face.sentInterests.clear();

   interest = Interest("/Security/ValidatorFixture/Sub1/Sub2/Interest");
   m_keyChain.sign(interest, signingWithSha256());
   m_keyChain.sign(data, signingWithSha256());
   VALIDATE_FAILURE(interest, "Required KeyLocator/Name missing (not passed to policy)");
   BOOST_TEST(lastError.getCode() == ValidationError::POLICY_ERROR);
   VALIDATE_SUCCESS(data, "Policy bypasses validation for all data");
   BOOST_TEST(face.sentInterests.size() == 0);
   face.sentInterests.clear();

   m_keyChain.sign(interest, signingByIdentity(identity));
   m_keyChain.sign(data, signingByIdentity(identity));
   VALIDATE_SUCCESS(interest, "Should get accepted, as signed by the anchor");
   VALIDATE_SUCCESS(data, "Policy bypasses validation for all data");
   BOOST_TEST(face.sentInterests.size() == 0);
   face.sentInterests.clear();

   m_keyChain.sign(interest, signingByIdentity(subIdentity));
   m_keyChain.sign(data, signingByIdentity(subIdentity));
   VALIDATE_FAILURE(interest, "Should fail, as policy is not allowed to create new trust anchors");
   BOOST_TEST(lastError.getCode() == ValidationError::POLICY_ERROR);
   VALIDATE_SUCCESS(data, "Policy bypasses validation for all data");
   BOOST_TEST(face.sentInterests.size() == 1);
   face.sentInterests.clear();

   m_keyChain.sign(interest, signingByIdentity(otherIdentity));
   m_keyChain.sign(data, signingByIdentity(otherIdentity));
   VALIDATE_FAILURE(interest, "Should fail, as signed by the policy-violating cert");
   BOOST_TEST(lastError.getCode() == ValidationError::POLICY_ERROR);
   VALIDATE_SUCCESS(data, "Policy bypasses validation for all data");
   // no network operations expected, as certificate is not validated by the policy
   BOOST_TEST(face.sentInterests.size() == 0);
   face.sentInterests.clear();

   advanceClocks(1_h, 2); // expire trusted cache

   m_keyChain.sign(interest, signingByIdentity(subSelfSignedIdentity));
   m_keyChain.sign(data, signingByIdentity(subSelfSignedIdentity));
   VALIDATE_FAILURE(interest, "Should fail, as policy is not allowed to create new trust anchors");
   BOOST_TEST(lastError.getCode() == ValidationError::POLICY_ERROR);
   VALIDATE_SUCCESS(data, "Policy bypasses validation for all data");
   BOOST_TEST(face.sentInterests.size() == 1);
   face.sentInterests.clear();
 }

 BOOST_AUTO_TEST_CASE(InfiniteCertChain)
 {
   processInterest = [this] (const Interest& interest) {
     // create another key for the same identity and sign it properly
     Key parentKey = m_keyChain.createKey(subIdentity);
     Key requestedKey = subIdentity.getKey(interest.getName());

     SignatureInfo sigInfo;
     sigInfo.setKeyLocator(parentKey.getName());
     auto si = signingByKey(parentKey).setSignatureInfo(sigInfo);

     auto cert = m_keyChain.makeCertificate(requestedKey, si);
     face.receive(cert);
   };

   Data data("/Security/ValidatorFixture/Sub1/Sub2/Data");
   m_keyChain.sign(data, signingByIdentity(subIdentity)
                         .setSignatureInfo(SignatureInfo()
                                           .setKeyLocator(subIdentity.getDefaultKey().getName())));

   validator.setMaxDepth(40);
   BOOST_CHECK_EQUAL(validator.getMaxDepth(), 40);
   VALIDATE_FAILURE(data, "Should fail, as certificate should be looped");
   BOOST_TEST(lastError.getCode() == ValidationError::EXCEEDED_DEPTH_LIMIT);
   BOOST_TEST(face.sentInterests.size() == 40);
   face.sentInterests.clear();

   advanceClocks(1_h, 5); // expire caches

   validator.setMaxDepth(30);
   BOOST_CHECK_EQUAL(validator.getMaxDepth(), 30);
   VALIDATE_FAILURE(data, "Should fail, as certificate chain is infinite");
   BOOST_TEST(lastError.getCode() == ValidationError::EXCEEDED_DEPTH_LIMIT);
   BOOST_TEST(face.sentInterests.size() == 30);
 }

 BOOST_AUTO_TEST_CASE(LoopedCertChain)
 {
   auto s1 = m_keyChain.createIdentity("/loop");
   auto k1 = m_keyChain.createKey(s1, RsaKeyParams(name::Component("key1")));
   auto k2 = m_keyChain.createKey(s1, RsaKeyParams(name::Component("key2")));
   auto k3 = m_keyChain.createKey(s1, RsaKeyParams(name::Component("key3")));

   auto makeLoopCert = [this] (Key& key, const Key& signer) {
     SignatureInfo sigInfo;
     sigInfo.setKeyLocator(signer.getName());
     auto si = signingByKey(signer).setSignatureInfo(sigInfo);

     auto cert = m_keyChain.makeCertificate(key, si);
     m_keyChain.setDefaultCertificate(key, cert);
     cache.insert(cert);
   };

   makeLoopCert(k1, k2);
   makeLoopCert(k2, k3);
   makeLoopCert(k3, k1);

   Data data("/loop/Data");
   m_keyChain.sign(data, signingByKey(k1));
   VALIDATE_FAILURE(data, "Should fail, as certificate chain loops");
   BOOST_TEST(lastError.getCode() == ValidationError::LOOP_DETECTED);
   BOOST_TEST_REQUIRE(face.sentInterests.size() == 3);
   BOOST_CHECK_EQUAL(face.sentInterests[0].getName(), k1.getDefaultCertificate().getName());
   BOOST_CHECK_EQUAL(face.sentInterests[1].getName(), k2.getName());
   BOOST_CHECK_EQUAL(face.sentInterests[2].getName(), k3.getName());
 }

 BOOST_AUTO_TEST_SUITE_END() // TestValidator
 BOOST_AUTO_TEST_SUITE_END() // Security

 } // namespace tests
 } // inline namespace v2
 } // namespace security
 } // namespace ndn
	/* -- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -- */
	/*
	* Copyright (c) 2013-2022 Regents of the University of California.
	*
	* This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
	*
	* ndn-cxx library is free software: you can redistribute it and/or modify it under the
	* terms of the GNU Lesser General Public License as published by the Free Software
	* Foundation, either version 3 of the License, or (at your option) any later version.
	*
	* ndn-cxx library 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 Lesser General Public License for more details.
	*
	* You should have received copies of the GNU General Public License and GNU Lesser
	* General Public License along with ndn-cxx, e.g., in COPYING.md file. If not, see
	* <http://www.gnu.org/licenses/>.
	*
	* See AUTHORS.md for complete list of ndn-cxx authors and contributors.
	*/

	#include "ndn-cxx/security/validator.hpp"
	#include "ndn-cxx/security/validation-policy-simple-hierarchy.hpp"

	#include "tests/test-common.hpp"
	#include "tests/unit/security/validator-fixture.hpp"

	namespace ndn {
	namespace security {
	inline namespace v2 {
	namespace tests {

	using namespace ndn::tests;

	BOOST_AUTO_TEST_SUITE(Security)
	BOOST_FIXTURE_TEST_SUITE(TestValidator, HierarchicalValidatorFixture<ValidationPolicySimpleHierarchy>)

	BOOST_AUTO_TEST_CASE(ConstructorSetValidator)
	{
	auto middlePolicy = make_unique<ValidationPolicySimpleHierarchy>();
	auto innerPolicy = make_unique<ValidationPolicySimpleHierarchy>();

	validator.getPolicy().setInnerPolicy(std::move(middlePolicy));
	validator.getPolicy().setInnerPolicy(std::move(innerPolicy));

	BOOST_CHECK(validator.getPolicy().m_validator != nullptr);
	BOOST_CHECK(validator.getPolicy().getInnerPolicy().m_validator != nullptr);
	BOOST_CHECK(validator.getPolicy().getInnerPolicy().getInnerPolicy().m_validator != nullptr);

	BOOST_CHECK_THROW(validator.getPolicy().setInnerPolicy(nullptr), std::invalid_argument);
	}

	BOOST_AUTO_TEST_CASE(BadSignatureInfo)
	{
	Interest interest("/Security/ValidatorFixture/Sub1/Sub2/Interest");
	m_keyChain.sign(interest, signingByIdentity(subIdentity)
	.setSignedInterestFormat(SignedInterestFormat::V03));

	// add an unrecognized critical element inside InterestSignatureInfo
	auto si = interest.getSignatureInfo().value();
	si.addCustomTlv("7F00"_block);
	interest.setSignatureInfo(si);
	BOOST_REQUIRE_THROW(interest.getSignatureInfo(), tlv::Error);
	BOOST_REQUIRE_NO_THROW(interest.getSignatureValue());

	VALIDATE_FAILURE(interest, "InterestSignatureInfo decoding should fail");
	BOOST_TEST(lastError.getCode() == ValidationError::MALFORMED_SIGNATURE);
	BOOST_TEST(face.sentInterests.size() == 0);
	}

	BOOST_AUTO_TEST_CASE(BadSignatureValue)
	{
	const uint8_t sv[] = {0x12, 0x34, 0x56, 0x78};

	Interest interest("/Security/ValidatorFixture/Sub1/Sub2/Interest");
	m_keyChain.sign(interest, signingByIdentity(subIdentity)
	.setSignedInterestFormat(SignedInterestFormat::V03));
	interest.setSignatureValue(sv);

	VALIDATE_FAILURE(interest, "Signature check should fail");
	BOOST_TEST(lastError.getCode() == ValidationError::INVALID_SIGNATURE);
	BOOST_TEST(face.sentInterests.size() == 1);

	Data data("/Security/ValidatorFixture/Sub1/Sub2/Data");
	m_keyChain.sign(data, signingByIdentity(subIdentity));
	data.setSignatureValue(sv);

	VALIDATE_FAILURE(data, "Signature check should fail");
	BOOST_TEST(lastError.getCode() == ValidationError::INVALID_SIGNATURE);
	BOOST_TEST(face.sentInterests.size() == 1);
	}

	BOOST_AUTO_TEST_CASE(Timeout)
	{
	processInterest = nullptr; // no response for any interest

	Data data("/Security/ValidatorFixture/Sub1/Sub2/Data");
	m_keyChain.sign(data, signingByIdentity(subIdentity));

	VALIDATE_FAILURE(data, "Should fail to retrieve certificate");
	BOOST_TEST(lastError.getCode() == ValidationError::CANNOT_RETRIEVE_CERT);
	BOOST_TEST(face.sentInterests.size() == 4);
	}

	BOOST_AUTO_TEST_CASE(Nack)
	{
	processInterest = [this] (const Interest& interest) {
	face.receive(makeNack(interest, lp::NackReason::NO_ROUTE));
	};

	Data data("/Security/ValidatorFixture/Sub1/Sub2/Data");
	m_keyChain.sign(data, signingByIdentity(subIdentity));

	VALIDATE_FAILURE(data, "All interests should get NACKed");
	BOOST_TEST(lastError.getCode() == ValidationError::CANNOT_RETRIEVE_CERT);
	// 1 for the first interest, 3 for the retries on nack
	BOOST_TEST(face.sentInterests.size() == 4);
	}

	BOOST_AUTO_TEST_CASE(MalformedCert)
	{
	Data malformedCert = subIdentity.getDefaultKey().getDefaultCertificate();
	malformedCert.setContentType(tlv::ContentType_Blob);
	m_keyChain.sign(malformedCert, signingByIdentity(identity));
	// wrong content type & missing ValidityPeriod
	BOOST_REQUIRE_THROW(Certificate(malformedCert.wireEncode()), tlv::Error);

	auto originalProcessInterest = processInterest;
	processInterest = [&] (const Interest& interest) {
	if (interest.getName().isPrefixOf(malformedCert.getName())) {
	face.receive(malformedCert);
	}
	else {
	originalProcessInterest(interest);
	}
	};

	Data data("/Security/ValidatorFixture/Sub1/Sub2/Data");
	m_keyChain.sign(data, signingByIdentity(subIdentity));

	VALIDATE_FAILURE(data, "Signed by a malformed certificate");
	BOOST_TEST(lastError.getCode() == ValidationError::MALFORMED_CERT);
	BOOST_TEST(face.sentInterests.size() == 1);
	}

	BOOST_AUTO_TEST_CASE(ExpiredCert)
	{
	Data expiredCert = subIdentity.getDefaultKey().getDefaultCertificate();
	SignatureInfo info;
	info.setValidityPeriod(ValidityPeriod::makeRelative(-2_h, -1_h));
	m_keyChain.sign(expiredCert, signingByIdentity(identity).setSignatureInfo(info));
	BOOST_REQUIRE_NO_THROW(Certificate(expiredCert.wireEncode()));

	auto originalProcessInterest = processInterest;
	processInterest = [&] (const Interest& interest) {
	if (interest.getName().isPrefixOf(expiredCert.getName())) {
	face.receive(expiredCert);
	}
	else {
	originalProcessInterest(interest);
	}
	};

	Data data("/Security/ValidatorFixture/Sub1/Sub2/Data");
	m_keyChain.sign(data, signingByIdentity(subIdentity));

	VALIDATE_FAILURE(data, "Signed by an expired certificate");
	BOOST_TEST(lastError.getCode() == ValidationError::EXPIRED_CERT);
	BOOST_TEST(face.sentInterests.size() == 1);
	}

	BOOST_AUTO_TEST_CASE(ResetAnchors)
	{
	validator.resetAnchors();

	Data data("/Security/ValidatorFixture/Sub1/Sub2/Data");
	m_keyChain.sign(data, signingByIdentity(subIdentity));
	VALIDATE_FAILURE(data, "Should fail, as no anchors configured");
	BOOST_TEST(lastError.getCode() == ValidationError::LOOP_DETECTED);
	}

	BOOST_AUTO_TEST_CASE(TrustedCertCaching)
	{
	Data data("/Security/ValidatorFixture/Sub1/Sub2/Data");
	m_keyChain.sign(data, signingByIdentity(subIdentity));

	VALIDATE_SUCCESS(data, "Should get accepted, as signed by the policy-compliant cert");
	BOOST_TEST(face.sentInterests.size() == 1);
	face.sentInterests.clear();

	processInterest = nullptr; // disable data responses from mocked network

	VALIDATE_SUCCESS(data, "Should get accepted, based on the cached trusted cert");
	BOOST_TEST(face.sentInterests.size() == 0);
	face.sentInterests.clear();

	advanceClocks(1_h, 2); // expire trusted cache

	VALIDATE_FAILURE(data, "Should try and fail to retrieve certs");
	BOOST_TEST(lastError.getCode() == ValidationError::CANNOT_RETRIEVE_CERT);
	BOOST_TEST(face.sentInterests.size() > 1);
	}

	BOOST_AUTO_TEST_CASE(ResetVerifiedCerts)
	{
	Data data("/Security/ValidatorFixture/Sub1/Sub2/Data");
	m_keyChain.sign(data, signingByIdentity(subIdentity));
	VALIDATE_SUCCESS(data, "Should get accepted, as signed by the policy-compliant cert");

	// reset anchors
	validator.resetAnchors();
	VALIDATE_SUCCESS(data, "Should get accepted, as signed by the cert in trusted cache");

	// reset trusted cache
	validator.resetVerifiedCertificates();
	VALIDATE_FAILURE(data, "Should fail, as no trusted cache or anchors");
	BOOST_TEST(lastError.getCode() == ValidationError::LOOP_DETECTED);
	}

	BOOST_AUTO_TEST_CASE(UntrustedCertCaching)
	{
	Data data("/Security/ValidatorFixture/Sub1/Sub2/Data");
	m_keyChain.sign(data, signingByIdentity(subSelfSignedIdentity));

	VALIDATE_FAILURE(data, "Should fail, as signed by the policy-violating cert");
	BOOST_TEST(lastError.getCode() == ValidationError::LOOP_DETECTED);
	BOOST_TEST(face.sentInterests.size() == 1);
	face.sentInterests.clear();

	processInterest = nullptr; // disable data responses from mocked network

	VALIDATE_FAILURE(data, "Should fail again, but no network operations expected");
	BOOST_TEST(lastError.getCode() == ValidationError::LOOP_DETECTED);
	BOOST_TEST(face.sentInterests.size() == 0);
	face.sentInterests.clear();

	advanceClocks(10_min, 2); // expire untrusted cache

	VALIDATE_FAILURE(data, "Should try and fail to retrieve certs");
	BOOST_TEST(lastError.getCode() == ValidationError::CANNOT_RETRIEVE_CERT);
	BOOST_TEST(face.sentInterests.size() > 1);
	}

	class ValidationPolicySimpleHierarchyForInterestOnly : public ValidationPolicySimpleHierarchy
	{
	public:
	void
	checkPolicy(const Data&, const shared_ptr<ValidationState>& state,
	const ValidationContinuation& continueValidation) override
	{
	continueValidation(nullptr, state);
	}
	};

	BOOST_FIXTURE_TEST_CASE(ValidateInterestsButBypassForData,
	HierarchicalValidatorFixture<ValidationPolicySimpleHierarchyForInterestOnly>)
	{
	Interest interest("/Security/ValidatorFixture/Sub1/Sub2/Interest");
	Data data("/Security/ValidatorFixture/Sub1/Sub2/Data");

	VALIDATE_FAILURE(interest, "Unsigned");
	BOOST_TEST(lastError.getCode() == ValidationError::MALFORMED_SIGNATURE);
	VALIDATE_SUCCESS(data, "Policy bypasses validation for all data");
	BOOST_TEST(face.sentInterests.size() == 0);
	face.sentInterests.clear();

	interest = Interest("/Security/ValidatorFixture/Sub1/Sub2/Interest");
	m_keyChain.sign(interest, signingWithSha256());
	m_keyChain.sign(data, signingWithSha256());
	VALIDATE_FAILURE(interest, "Required KeyLocator/Name missing (not passed to policy)");
	BOOST_TEST(lastError.getCode() == ValidationError::POLICY_ERROR);
	VALIDATE_SUCCESS(data, "Policy bypasses validation for all data");
	BOOST_TEST(face.sentInterests.size() == 0);
	face.sentInterests.clear();

	m_keyChain.sign(interest, signingByIdentity(identity));
	m_keyChain.sign(data, signingByIdentity(identity));
	VALIDATE_SUCCESS(interest, "Should get accepted, as signed by the anchor");
	VALIDATE_SUCCESS(data, "Policy bypasses validation for all data");
	BOOST_TEST(face.sentInterests.size() == 0);
	face.sentInterests.clear();

	m_keyChain.sign(interest, signingByIdentity(subIdentity));
	m_keyChain.sign(data, signingByIdentity(subIdentity));
	VALIDATE_FAILURE(interest, "Should fail, as policy is not allowed to create new trust anchors");
	BOOST_TEST(lastError.getCode() == ValidationError::POLICY_ERROR);
	VALIDATE_SUCCESS(data, "Policy bypasses validation for all data");
	BOOST_TEST(face.sentInterests.size() == 1);
	face.sentInterests.clear();

	m_keyChain.sign(interest, signingByIdentity(otherIdentity));
	m_keyChain.sign(data, signingByIdentity(otherIdentity));
	VALIDATE_FAILURE(interest, "Should fail, as signed by the policy-violating cert");
	BOOST_TEST(lastError.getCode() == ValidationError::POLICY_ERROR);
	VALIDATE_SUCCESS(data, "Policy bypasses validation for all data");
	// no network operations expected, as certificate is not validated by the policy
	BOOST_TEST(face.sentInterests.size() == 0);
	face.sentInterests.clear();

	advanceClocks(1_h, 2); // expire trusted cache

	m_keyChain.sign(interest, signingByIdentity(subSelfSignedIdentity));
	m_keyChain.sign(data, signingByIdentity(subSelfSignedIdentity));
	VALIDATE_FAILURE(interest, "Should fail, as policy is not allowed to create new trust anchors");
	BOOST_TEST(lastError.getCode() == ValidationError::POLICY_ERROR);
	VALIDATE_SUCCESS(data, "Policy bypasses validation for all data");
	BOOST_TEST(face.sentInterests.size() == 1);
	face.sentInterests.clear();
	}

	BOOST_AUTO_TEST_CASE(InfiniteCertChain)
	{
	processInterest = [this] (const Interest& interest) {
	// create another key for the same identity and sign it properly
	Key parentKey = m_keyChain.createKey(subIdentity);
	Key requestedKey = subIdentity.getKey(interest.getName());

	SignatureInfo sigInfo;
	sigInfo.setKeyLocator(parentKey.getName());
	auto si = signingByKey(parentKey).setSignatureInfo(sigInfo);

	auto cert = m_keyChain.makeCertificate(requestedKey, si);
	face.receive(cert);
	};

	Data data("/Security/ValidatorFixture/Sub1/Sub2/Data");
	m_keyChain.sign(data, signingByIdentity(subIdentity)
	.setSignatureInfo(SignatureInfo()
	.setKeyLocator(subIdentity.getDefaultKey().getName())));

	validator.setMaxDepth(40);
	BOOST_CHECK_EQUAL(validator.getMaxDepth(), 40);
	VALIDATE_FAILURE(data, "Should fail, as certificate should be looped");
	BOOST_TEST(lastError.getCode() == ValidationError::EXCEEDED_DEPTH_LIMIT);
	BOOST_TEST(face.sentInterests.size() == 40);
	face.sentInterests.clear();

	advanceClocks(1_h, 5); // expire caches

	validator.setMaxDepth(30);
	BOOST_CHECK_EQUAL(validator.getMaxDepth(), 30);
	VALIDATE_FAILURE(data, "Should fail, as certificate chain is infinite");
	BOOST_TEST(lastError.getCode() == ValidationError::EXCEEDED_DEPTH_LIMIT);
	BOOST_TEST(face.sentInterests.size() == 30);
	}

	BOOST_AUTO_TEST_CASE(LoopedCertChain)
	{
	auto s1 = m_keyChain.createIdentity("/loop");
	auto k1 = m_keyChain.createKey(s1, RsaKeyParams(name::Component("key1")));
	auto k2 = m_keyChain.createKey(s1, RsaKeyParams(name::Component("key2")));
	auto k3 = m_keyChain.createKey(s1, RsaKeyParams(name::Component("key3")));

	auto makeLoopCert = [this] (Key& key, const Key& signer) {
	SignatureInfo sigInfo;
	sigInfo.setKeyLocator(signer.getName());
	auto si = signingByKey(signer).setSignatureInfo(sigInfo);

	auto cert = m_keyChain.makeCertificate(key, si);
	m_keyChain.setDefaultCertificate(key, cert);
	cache.insert(cert);
	};

	makeLoopCert(k1, k2);
	makeLoopCert(k2, k3);
	makeLoopCert(k3, k1);

	Data data("/loop/Data");
	m_keyChain.sign(data, signingByKey(k1));
	VALIDATE_FAILURE(data, "Should fail, as certificate chain loops");
	BOOST_TEST(lastError.getCode() == ValidationError::LOOP_DETECTED);
	BOOST_TEST_REQUIRE(face.sentInterests.size() == 3);
	BOOST_CHECK_EQUAL(face.sentInterests[0].getName(), k1.getDefaultCertificate().getName());
	BOOST_CHECK_EQUAL(face.sentInterests[1].getName(), k2.getName());
	BOOST_CHECK_EQUAL(face.sentInterests[2].getName(), k3.getName());
	}

	BOOST_AUTO_TEST_SUITE_END() // TestValidator
	BOOST_AUTO_TEST_SUITE_END() // Security

	} // namespace tests
	} // inline namespace v2
	} // namespace security
	} // namespace ndn