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/*
* Copyright (C) 2018 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 com.android.ike.ikev2.message;
import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import org.junit.Test;
import javax.crypto.Mac;
public final class IkeAuthPayloadTest {
private static final String PSK_AUTH_PAYLOAD_HEX_STRING =
"02000000df7c038aefaaa32d3f44b228b52a332744dfb2c1";
private static final String PSK_AUTH_PAYLOAD_SIGNATRUE_HEX_STRING =
"df7c038aefaaa32d3f44b228b52a332744dfb2c1";
private static final String PSK_ID_PAYLOAD_HEX_STRING = "010000000a50500d";
private static final String PSK_SKP_HEX_STRING = "094787780EE466E2CB049FA327B43908BC57E485";
private static final String PSK_SIGNED_OCTETS_APPENDIX_HEX_STRING =
"D83B20CC6A0932B2A7CEF26E4020ABAAB64F0C6A";
private static final int AUTH_METHOD_POSITION = 0;
private static final String PRF_HMAC_SHA1_ALGO_NAME = "HmacSHA1";
@Test
public void testDecodeIkeAuthPayload() throws Exception {
byte[] inputPacket = TestUtils.hexStringToByteArray(PSK_AUTH_PAYLOAD_HEX_STRING);
IkeAuthPayload payload = IkeAuthPayload.getIkeAuthPayload(false, inputPacket);
assertEquals(IkeAuthPayload.AUTH_METHOD_PRE_SHARED_KEY, payload.authMethod);
assertTrue(payload instanceof IkeAuthPskPayload);
byte[] expectedSignature =
TestUtils.hexStringToByteArray(PSK_AUTH_PAYLOAD_SIGNATRUE_HEX_STRING);
assertArrayEquals(expectedSignature, ((IkeAuthPskPayload) payload).signature);
}
@Test
public void testDecodeIkeAuthPayloadWithUnsupportedMethod() throws Exception {
byte[] inputPacket = TestUtils.hexStringToByteArray(PSK_AUTH_PAYLOAD_HEX_STRING);
inputPacket[AUTH_METHOD_POSITION] = 0;
try {
IkeAuthPayload payload = IkeAuthPayload.getIkeAuthPayload(false, inputPacket);
fail("Expected Exception: authentication method is not supported");
} catch (UnsupportedOperationException e) {
// TODO: Catch AuthenticationFailedException after it is implemented.
}
}
@Test
public void testSignWithPrf() throws Exception {
byte[] inputPacket = TestUtils.hexStringToByteArray(PSK_AUTH_PAYLOAD_HEX_STRING);
IkeAuthPayload payload = IkeAuthPayload.getIkeAuthPayload(false, inputPacket);
Mac prfMac = Mac.getInstance(PRF_HMAC_SHA1_ALGO_NAME, IkeMessage.getSecurityProvider());
byte[] skpBytes = TestUtils.hexStringToByteArray(PSK_SKP_HEX_STRING);
byte[] idBytes = TestUtils.hexStringToByteArray(PSK_ID_PAYLOAD_HEX_STRING);
byte[] calculatedBytes = payload.signWithPrf(prfMac, skpBytes, idBytes);
byte[] expectedBytes =
TestUtils.hexStringToByteArray(PSK_SIGNED_OECTETS_APPENDIX_HEX_STRING);
assertArrayEquals(expectedBytes, calculatedBytes);
}
}
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