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/*
* Copyright (C) 2019 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.net.ipsec.ike;
import static android.net.ipsec.ike.SaProposal.KEY_LEN_AES_128;
import static android.net.ipsec.ike.SaProposal.KEY_LEN_UNUSED;
import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import com.android.internal.net.ipsec.ike.message.IkePayload;
import com.android.internal.net.ipsec.ike.message.IkeSaPayload.DhGroupTransform;
import com.android.internal.net.ipsec.ike.message.IkeSaPayload.EncryptionTransform;
import com.android.internal.net.ipsec.ike.message.IkeSaPayload.IntegrityTransform;
import com.android.internal.net.ipsec.ike.message.IkeSaPayload.PrfTransform;
import com.android.internal.net.ipsec.ike.message.IkeSaPayload.Transform;
import org.junit.Test;
public final class SaProposalTest {
private final EncryptionTransform mEncryption3DesTransform;
private final EncryptionTransform mEncryptionAesGcm8Transform;
private final EncryptionTransform mEncryptionAesGcm12Transform;
private final IntegrityTransform mIntegrityHmacSha1Transform;
private final IntegrityTransform mIntegrityNoneTransform;
private final PrfTransform mPrfAes128XCbcTransform;
private final DhGroupTransform mDhGroup1024Transform;
public SaProposalTest() {
mEncryption3DesTransform =
new EncryptionTransform(SaProposal.ENCRYPTION_ALGORITHM_3DES, KEY_LEN_UNUSED);
mEncryptionAesGcm8Transform =
new EncryptionTransform(
SaProposal.ENCRYPTION_ALGORITHM_AES_GCM_8, SaProposal.KEY_LEN_AES_128);
mEncryptionAesGcm12Transform =
new EncryptionTransform(
SaProposal.ENCRYPTION_ALGORITHM_AES_GCM_12, SaProposal.KEY_LEN_AES_128);
mIntegrityHmacSha1Transform =
new IntegrityTransform(SaProposal.INTEGRITY_ALGORITHM_HMAC_SHA1_96);
mIntegrityNoneTransform = new IntegrityTransform(SaProposal.INTEGRITY_ALGORITHM_NONE);
mPrfAes128XCbcTransform = new PrfTransform(SaProposal.PSEUDORANDOM_FUNCTION_AES128_XCBC);
mDhGroup1024Transform = new DhGroupTransform(SaProposal.DH_GROUP_1024_BIT_MODP);
}
@Test
public void testBuildIkeSaProposalWithNormalModeCipher() throws Exception {
IkeSaProposal proposal =
new IkeSaProposal.Builder()
.addEncryptionAlgorithm(
SaProposal.ENCRYPTION_ALGORITHM_3DES, KEY_LEN_UNUSED)
.addIntegrityAlgorithm(SaProposal.INTEGRITY_ALGORITHM_HMAC_SHA1_96)
.addPseudorandomFunction(SaProposal.PSEUDORANDOM_FUNCTION_AES128_XCBC)
.addDhGroup(SaProposal.DH_GROUP_1024_BIT_MODP)
.build();
assertEquals(IkePayload.PROTOCOL_ID_IKE, proposal.getProtocolId());
assertArrayEquals(
new EncryptionTransform[] {mEncryption3DesTransform},
proposal.getEncryptionTransforms());
assertArrayEquals(
new IntegrityTransform[] {mIntegrityHmacSha1Transform},
proposal.getIntegrityTransforms());
assertArrayEquals(
new PrfTransform[] {mPrfAes128XCbcTransform}, proposal.getPrfTransforms());
assertArrayEquals(
new DhGroupTransform[] {mDhGroup1024Transform}, proposal.getDhGroupTransforms());
}
@Test
public void testBuildIkeSaProposalWithCombinedModeCipher() throws Exception {
IkeSaProposal proposal =
new IkeSaProposal.Builder()
.addEncryptionAlgorithm(
SaProposal.ENCRYPTION_ALGORITHM_AES_GCM_8,
SaProposal.KEY_LEN_AES_128)
.addPseudorandomFunction(SaProposal.PSEUDORANDOM_FUNCTION_AES128_XCBC)
.addDhGroup(SaProposal.DH_GROUP_1024_BIT_MODP)
.build();
assertEquals(IkePayload.PROTOCOL_ID_IKE, proposal.getProtocolId());
assertArrayEquals(
new EncryptionTransform[] {mEncryptionAesGcm8Transform},
proposal.getEncryptionTransforms());
assertArrayEquals(
new PrfTransform[] {mPrfAes128XCbcTransform}, proposal.getPrfTransforms());
assertArrayEquals(
new DhGroupTransform[] {mDhGroup1024Transform}, proposal.getDhGroupTransforms());
assertTrue(proposal.getIntegrityTransforms().length == 0);
}
@Test
public void testBuildChildSaProposalWithNormalCipher() throws Exception {
ChildSaProposal proposal =
new ChildSaProposal.Builder()
.addEncryptionAlgorithm(
SaProposal.ENCRYPTION_ALGORITHM_3DES, KEY_LEN_UNUSED)
.addIntegrityAlgorithm(SaProposal.INTEGRITY_ALGORITHM_NONE)
.addDhGroup(SaProposal.DH_GROUP_1024_BIT_MODP)
.build();
assertEquals(IkePayload.PROTOCOL_ID_ESP, proposal.getProtocolId());
assertArrayEquals(
new EncryptionTransform[] {mEncryption3DesTransform},
proposal.getEncryptionTransforms());
assertArrayEquals(
new IntegrityTransform[] {mIntegrityNoneTransform},
proposal.getIntegrityTransforms());
assertArrayEquals(
new DhGroupTransform[] {mDhGroup1024Transform}, proposal.getDhGroupTransforms());
}
@Test
public void testGetCopyWithoutDhGroup() throws Exception {
ChildSaProposal proposal =
new ChildSaProposal.Builder()
.addEncryptionAlgorithm(
SaProposal.ENCRYPTION_ALGORITHM_3DES, KEY_LEN_UNUSED)
.addIntegrityAlgorithm(SaProposal.INTEGRITY_ALGORITHM_NONE)
.addDhGroup(SaProposal.DH_GROUP_1024_BIT_MODP)
.build();
ChildSaProposal proposalWithoutDh = proposal.getCopyWithoutDhTransform();
assertArrayEquals(
proposal.getEncryptionTransforms(), proposalWithoutDh.getEncryptionTransforms());
assertArrayEquals(
proposal.getIntegrityTransforms(), proposalWithoutDh.getIntegrityTransforms());
assertTrue(proposal.getDhGroupTransforms().length == 1);
assertTrue(proposalWithoutDh.getDhGroupTransforms().length == 0);
}
@Test
public void testBuildEncryptAlgosWithNoAlgorithm() throws Exception {
try {
new IkeSaProposal.Builder().build();
fail("Expected to fail when no encryption algorithm is proposed.");
} catch (IllegalArgumentException expected) {
}
}
@Test
public void testBuildEncryptAlgosWithUnrecognizedAlgorithm() throws Exception {
try {
new IkeSaProposal.Builder().addEncryptionAlgorithm(-1, KEY_LEN_UNUSED);
fail("Expected to fail when unrecognized encryption algorithm is proposed.");
} catch (IllegalArgumentException expected) {
}
}
@Test
public void testBuildEncryptAlgosWithTwoModes() throws Exception {
try {
new IkeSaProposal.Builder()
.addEncryptionAlgorithm(SaProposal.ENCRYPTION_ALGORITHM_3DES, KEY_LEN_UNUSED)
.addEncryptionAlgorithm(
SaProposal.ENCRYPTION_ALGORITHM_AES_GCM_12, KEY_LEN_AES_128);
fail(
"Expected to fail when "
+ "normal and combined-mode ciphers are proposed together.");
} catch (IllegalArgumentException expected) {
}
}
@Test
public void testBuildIkeProposalWithoutPrf() throws Exception {
try {
new IkeSaProposal.Builder()
.addEncryptionAlgorithm(SaProposal.ENCRYPTION_ALGORITHM_3DES, KEY_LEN_UNUSED)
.build();
fail("Expected to fail when PRF is not provided in IKE SA proposal.");
} catch (IllegalArgumentException expected) {
}
}
// Test throwing exception when building IKE SA Proposal with AEAD and not-none integrity
// algorithm.
@Test
public void testBuildAeadWithIntegrityAlgo() throws Exception {
try {
new ChildSaProposal.Builder()
.addEncryptionAlgorithm(
SaProposal.ENCRYPTION_ALGORITHM_AES_GCM_12, KEY_LEN_AES_128)
.addIntegrityAlgorithm(SaProposal.INTEGRITY_ALGORITHM_NONE)
.addIntegrityAlgorithm(SaProposal.INTEGRITY_ALGORITHM_HMAC_SHA1_96)
.build();
fail("Expected to fail when not-none integrity algorithm is proposed with AEAD");
} catch (IllegalArgumentException expected) {
}
}
// Test throwing exception when building IKE SA Proposal with normal mode cipher and without
// integrity algorithm.
@Test
public void testBuildIkeProposalNormalCipherWithoutIntegrityAlgo() throws Exception {
try {
new IkeSaProposal.Builder()
.addEncryptionAlgorithm(SaProposal.ENCRYPTION_ALGORITHM_3DES, KEY_LEN_UNUSED)
.addPseudorandomFunction(SaProposal.PSEUDORANDOM_FUNCTION_HMAC_SHA1)
.build();
fail(
"Expected to fail when"
+ " no integrity algorithm is proposed with non-combined cipher");
} catch (IllegalArgumentException expected) {
}
}
// Test throwing exception when building IKE SA Proposal with normal mode cipher and none-value
// integrity algorithm.
@Test
public void testBuildIkeProposalNormalCipherWithNoneValueIntegrityAlgo() throws Exception {
try {
new IkeSaProposal.Builder()
.addEncryptionAlgorithm(SaProposal.ENCRYPTION_ALGORITHM_3DES, KEY_LEN_UNUSED)
.addPseudorandomFunction(SaProposal.PSEUDORANDOM_FUNCTION_HMAC_SHA1)
.addIntegrityAlgorithm(SaProposal.INTEGRITY_ALGORITHM_NONE)
.addIntegrityAlgorithm(SaProposal.INTEGRITY_ALGORITHM_HMAC_SHA1_96)
.build();
fail(
"Expected to fail when none-value integrity algorithm is proposed"
+ " with non-combined cipher");
} catch (IllegalArgumentException expected) {
}
}
@Test
public void testBuildIkeProposalWithoutDhGroup() throws Exception {
try {
new IkeSaProposal.Builder()
.addEncryptionAlgorithm(SaProposal.ENCRYPTION_ALGORITHM_3DES, KEY_LEN_UNUSED)
.addIntegrityAlgorithm(SaProposal.INTEGRITY_ALGORITHM_HMAC_SHA1_96)
.addPseudorandomFunction(SaProposal.PSEUDORANDOM_FUNCTION_AES128_XCBC)
.build();
fail("Expected to fail when no DH Group is proposed in IKE SA proposal.");
} catch (IllegalArgumentException expected) {
}
}
@Test
public void testBuildIkeProposalWithNoneValueDhGroup() throws Exception {
try {
new IkeSaProposal.Builder()
.addEncryptionAlgorithm(SaProposal.ENCRYPTION_ALGORITHM_3DES, KEY_LEN_UNUSED)
.addIntegrityAlgorithm(SaProposal.INTEGRITY_ALGORITHM_HMAC_SHA1_96)
.addPseudorandomFunction(SaProposal.PSEUDORANDOM_FUNCTION_AES128_XCBC)
.addDhGroup(SaProposal.DH_GROUP_1024_BIT_MODP)
.addDhGroup(SaProposal.DH_GROUP_NONE)
.build();
fail("Expected to fail when none-value DH Group is proposed in IKE SA proposal.");
} catch (IllegalArgumentException expected) {
}
}
@Test
public void testIsTransformSelectedFrom() throws Exception {
assertTrue(SaProposal.isTransformSelectedFrom(new Transform[0], new Transform[0]));
assertTrue(
SaProposal.isTransformSelectedFrom(
new Transform[] {mEncryptionAesGcm8Transform},
new Transform[] {
mEncryptionAesGcm8Transform, mEncryptionAesGcm12Transform
}));
assertTrue(
SaProposal.isTransformSelectedFrom(
new Transform[] {mIntegrityNoneTransform},
new Transform[] {mIntegrityNoneTransform}));
// No transform selected.
assertFalse(
SaProposal.isTransformSelectedFrom(
new Transform[0], new Transform[] {mEncryptionAesGcm8Transform}));
// Selected transform was not part of original proposal.
assertFalse(
SaProposal.isTransformSelectedFrom(
new Transform[] {mPrfAes128XCbcTransform}, new Transform[0]));
// More than one transform returned.
assertFalse(
SaProposal.isTransformSelectedFrom(
new Transform[] {mEncryptionAesGcm8Transform, mEncryptionAesGcm12Transform},
new Transform[] {
mEncryptionAesGcm8Transform, mEncryptionAesGcm12Transform
}));
// Selected transform was not part of original proposal.
assertFalse(
SaProposal.isTransformSelectedFrom(
new Transform[] {mIntegrityNoneTransform},
new Transform[] {mIntegrityHmacSha1Transform}));
}
}
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