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/*
* Copyright (C) 2010 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 libcore.javax.crypto;
import java.security.Provider;
import java.security.SecureRandom;
import java.security.Security;
import java.util.HashMap;
import java.util.Map;
import java.util.List;
import java.util.ArrayList;
import java.util.Set;
import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;
import junit.framework.TestCase;
public class KeyGeneratorTest extends TestCase {
private static boolean isUnsupported(KeyGenerator kg) {
// Don't bother testing "Sun..." KeyGenerators
return (kg.getAlgorithm().startsWith("Sun"));
}
public void test_getInstance() throws Exception {
Provider[] providers = Security.getProviders();
for (Provider provider : providers) {
Set<Provider.Service> services = provider.getServices();
for (Provider.Service service : services) {
String type = service.getType();
if (!type.equals("KeyGenerator")) {
continue;
}
String algorithm = service.getAlgorithm();
try {
// KeyGenerator.getInstance(String)
KeyGenerator kg1 = KeyGenerator.getInstance(algorithm);
assertEquals(algorithm, kg1.getAlgorithm());
test_KeyGenerator(kg1);
// KeyGenerator.getInstance(String, Provider)
KeyGenerator kg2 = KeyGenerator.getInstance(algorithm, provider);
assertEquals(algorithm, kg2.getAlgorithm());
assertEquals(provider, kg2.getProvider());
test_KeyGenerator(kg2);
// KeyGenerator.getInstance(String, String)
KeyGenerator kg3 = KeyGenerator.getInstance(algorithm, provider.getName());
assertEquals(algorithm, kg3.getAlgorithm());
assertEquals(provider, kg3.getProvider());
test_KeyGenerator(kg3);
} catch (Exception e) {
throw new Exception("Problem testing KeyPairGenerator." + algorithm, e);
}
}
}
}
private static final Map<String, List<Integer>> KEY_SIZES
= new HashMap<String, List<Integer>>();
private static void putKeySize(String algorithm, int keySize) {
algorithm = algorithm.toUpperCase();
List<Integer> keySizes = KEY_SIZES.get(algorithm);
if (keySizes == null) {
keySizes = new ArrayList<Integer>();
KEY_SIZES.put(algorithm, keySizes);
}
keySizes.add(keySize);
}
private static List<Integer> getKeySizes(String algorithm) throws Exception {
algorithm = algorithm.toUpperCase();
List<Integer> keySizes = KEY_SIZES.get(algorithm);
if (keySizes == null) {
throw new Exception("Unknown key sizes for KeyGenerator." + algorithm);
}
return keySizes;
}
static {
putKeySize("AES", 128);
putKeySize("AES", 192);
putKeySize("AES", 256);
putKeySize("ARC4", 1024);
putKeySize("ARC4", 40);
putKeySize("ARC4", 41);
putKeySize("ARCFOUR", 1024);
putKeySize("ARCFOUR", 40);
putKeySize("ARCFOUR", 41);
putKeySize("Blowfish", 32);
putKeySize("Blowfish", 32+8);
putKeySize("Blowfish", 448);
putKeySize("DES", 56);
putKeySize("DESede", 112);
putKeySize("DESede", 168);
putKeySize("RC2", 40);
putKeySize("RC2", 41);
putKeySize("RC2", 1024);
putKeySize("RC4", 40);
putKeySize("RC4", 41);
putKeySize("RC4", 1024);
putKeySize("HmacMD5", 1);
putKeySize("HmacMD5", 1025);
putKeySize("HmacSHA1", 1);
putKeySize("HmacSHA1", 1025);
putKeySize("HmacSHA256", 40);
putKeySize("HmacSHA256", 1025);
putKeySize("HmacSHA384", 40);
putKeySize("HmacSHA384", 1025);
putKeySize("HmacSHA512", 40);
putKeySize("HmacSHA512", 1025);
}
private void test_KeyGenerator(KeyGenerator kg) throws Exception {
if (isUnsupported(kg)) {
return;
}
kg.init((SecureRandom) null);
test_SecretKey(kg, kg.generateKey());
kg.init(new SecureRandom());
test_SecretKey(kg, kg.generateKey());
String algorithm = kg.getAlgorithm();
List<Integer> keySizes = getKeySizes(algorithm);
for (int keySize : keySizes) {
kg.init(keySize);
test_SecretKey(kg, kg.generateKey());
kg.init(keySize, (SecureRandom) null);
test_SecretKey(kg, kg.generateKey());
kg.init(keySize, new SecureRandom());
test_SecretKey(kg, kg.generateKey());
}
}
private void test_SecretKey(KeyGenerator kg, SecretKey sk) throws Exception {
assertNotNull(sk);
assertEquals(kg.getAlgorithm().toUpperCase(), sk.getAlgorithm().toUpperCase());
assertNotNull(sk.getEncoded());
assertNotNull(sk.getFormat());
}
}
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