| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.kerby.kerberos.kerb.crypto; |
| |
| import org.apache.kerby.kerberos.kerb.KrbException; |
| import org.apache.kerby.kerberos.kerb.crypto.enc.EncryptProvider; |
| import org.apache.kerby.kerberos.kerb.crypto.enc.provider.Camellia128Provider; |
| import org.apache.kerby.kerberos.kerb.crypto.enc.provider.Camellia256Provider; |
| import org.apache.kerby.util.HexUtil; |
| import org.junit.Test; |
| |
| import java.io.BufferedReader; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.InputStreamReader; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.List; |
| |
| import static org.assertj.core.api.Assertions.assertThat; |
| |
| /** |
| * Ref. camellia-test.c test in MIT krb5 project. |
| */ |
| public class CamelliaEncTest { |
| |
| private List<String> outputs = new ArrayList<>(); |
| |
| private byte[] plain = new byte[16]; |
| private byte[] cipher = new byte[16]; |
| private EncryptProvider encProvider; |
| |
| private List<String> getExpectedLines() throws IOException { |
| try (InputStream res = getClass().getResourceAsStream("/camellia-expect-vt.txt"); |
| BufferedReader br = new BufferedReader(new InputStreamReader(res))) { |
| List<String> results = new ArrayList<>(); |
| String line; |
| while ((line = br.readLine()) != null) { |
| line = line.trim(); |
| if (!line.isEmpty()) { |
| results.add(line); |
| } |
| } |
| return results; |
| } |
| } |
| |
| @Test |
| public void testEnc() throws IOException, KrbException { |
| List<String> expectedLines = getExpectedLines(); |
| |
| testWith(16); |
| outputs.add("=========="); |
| testWith(32); |
| outputs.add("=========="); |
| |
| List<String> newLines = expectedLines; |
| assertThat(newLines).as("Comparing new lines with expected lines").isEqualTo(outputs); |
| } |
| |
| private void testWith(int keySize) throws KrbException { |
| outputs.add("KEYSIZE=" + (keySize * 8)); |
| |
| encProvider = keySize == 16 ? new Camellia128Provider() : new Camellia256Provider(); |
| |
| byte[] key = new byte[keySize]; |
| Arrays.fill(key, (byte) 0); |
| hexDump("KEY", key); |
| |
| for (int i = 0; i < 16 * 8; ++i) { |
| Arrays.fill(plain, (byte) 0); |
| setBit(plain, i); |
| outputs.add("I=" + (i + 1)); |
| hexDump("PT", plain); |
| encWith(key); |
| hexDump("CT", cipher); |
| } |
| } |
| |
| private void hexDump(String label, byte[] bytes) { |
| String line = label + "=" + HexUtil.bytesToHex(bytes); |
| outputs.add(line); |
| } |
| |
| private static void setBit(byte[] bytes, int bitnum) { |
| int bytenum = bitnum / 8; |
| bitnum %= 8; |
| // First bit is the high bit! |
| bytes[bytenum] = (byte) (1 << (7 - bitnum)); |
| } |
| |
| private void encWith(byte[] key) throws KrbException { |
| System.arraycopy(plain, 0, cipher, 0, plain.length); |
| encProvider.encrypt(key, cipher); |
| } |
| } |