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/*
* Copyright (C) 2012 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.security;
import android.test.AndroidTestCase;
import java.io.ByteArrayInputStream;
import java.math.BigInteger;
import java.security.KeyPair;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.SecureRandom;
import java.security.cert.Certificate;
import java.security.cert.CertificateFactory;
import java.security.cert.X509Certificate;
import java.util.Date;
import javax.security.auth.x500.X500Principal;
public class AndroidKeyPairGeneratorTest extends AndroidTestCase {
private android.security.KeyStore mAndroidKeyStore;
private java.security.KeyPairGenerator mGenerator;
private static final String TEST_ALIAS_1 = "test1";
private static final String TEST_ALIAS_2 = "test2";
private static final X500Principal TEST_DN_1 = new X500Principal("CN=test1");
private static final X500Principal TEST_DN_2 = new X500Principal("CN=test2");
private static final BigInteger TEST_SERIAL_1 = BigInteger.ONE;
private static final BigInteger TEST_SERIAL_2 = BigInteger.valueOf(2L);
private static final long NOW_MILLIS = System.currentTimeMillis();
/* We have to round this off because X509v3 doesn't store milliseconds. */
private static final Date NOW = new Date(NOW_MILLIS - (NOW_MILLIS % 1000L));
@SuppressWarnings("deprecation")
private static final Date NOW_PLUS_10_YEARS = new Date(NOW.getYear() + 10, 0, 1);
@Override
protected void setUp() throws Exception {
mAndroidKeyStore = android.security.KeyStore.getInstance();
assertTrue(mAndroidKeyStore.reset());
assertEquals(android.security.KeyStore.State.UNINITIALIZED, mAndroidKeyStore.state());
assertTrue(mAndroidKeyStore.password("1111"));
assertEquals(android.security.KeyStore.State.UNLOCKED, mAndroidKeyStore.state());
assertEquals(0, mAndroidKeyStore.saw("").length);
mGenerator = java.security.KeyPairGenerator.getInstance(AndroidKeyPairGenerator.NAME);
}
public void testKeyPairGenerator_Initialize_Params_Success() throws Exception {
mGenerator.initialize(new AndroidKeyPairGeneratorSpec(getContext(), TEST_ALIAS_1,
TEST_DN_1, TEST_SERIAL_1, NOW, NOW_PLUS_10_YEARS));
}
public void testKeyPairGenerator_Initialize_KeySize_Failure() throws Exception {
try {
mGenerator.initialize(1024);
fail("KeyPairGenerator should not support setting the key size");
} catch (IllegalArgumentException success) {
}
}
public void testKeyPairGenerator_Initialize_KeySizeAndSecureRandom_Failure() throws Exception {
try {
mGenerator.initialize(1024, new SecureRandom());
fail("KeyPairGenerator should not support setting the key size");
} catch (IllegalArgumentException success) {
}
}
public void testKeyPairGenerator_Initialize_ParamsAndSecureRandom_Failure() throws Exception {
mGenerator.initialize(new AndroidKeyPairGeneratorSpec(getContext(), TEST_ALIAS_1,
TEST_DN_1, TEST_SERIAL_1, NOW, NOW_PLUS_10_YEARS), new SecureRandom());
}
public void testKeyPairGenerator_GenerateKeyPair_Success() throws Exception {
mGenerator.initialize(new AndroidKeyPairGeneratorSpec(getContext(), TEST_ALIAS_1,
TEST_DN_1, TEST_SERIAL_1, NOW, NOW_PLUS_10_YEARS));
final KeyPair pair = mGenerator.generateKeyPair();
assertNotNull("The KeyPair returned should not be null", pair);
assertKeyPairCorrect(pair, TEST_ALIAS_1, TEST_DN_1, TEST_SERIAL_1, NOW, NOW_PLUS_10_YEARS);
}
public void testKeyPairGenerator_GenerateKeyPair_Replaced_Success() throws Exception {
// Generate the first key
{
mGenerator.initialize(new AndroidKeyPairGeneratorSpec(getContext(), TEST_ALIAS_1,
TEST_DN_1, TEST_SERIAL_1, NOW, NOW_PLUS_10_YEARS));
final KeyPair pair1 = mGenerator.generateKeyPair();
assertNotNull("The KeyPair returned should not be null", pair1);
assertKeyPairCorrect(pair1, TEST_ALIAS_1, TEST_DN_1, TEST_SERIAL_1, NOW,
NOW_PLUS_10_YEARS);
}
// Replace the original key
{
mGenerator.initialize(new AndroidKeyPairGeneratorSpec(getContext(), TEST_ALIAS_2,
TEST_DN_2, TEST_SERIAL_2, NOW, NOW_PLUS_10_YEARS));
final KeyPair pair2 = mGenerator.generateKeyPair();
assertNotNull("The KeyPair returned should not be null", pair2);
assertKeyPairCorrect(pair2, TEST_ALIAS_2, TEST_DN_2, TEST_SERIAL_2, NOW,
NOW_PLUS_10_YEARS);
}
}
private void assertKeyPairCorrect(KeyPair pair, String alias, X500Principal dn,
BigInteger serial, Date start, Date end) throws Exception {
final PublicKey pubKey = pair.getPublic();
assertNotNull("The PublicKey for the KeyPair should be not null", pubKey);
final PrivateKey privKey = pair.getPrivate();
assertNotNull("The PrivateKey for the KeyPair should be not null", privKey);
final byte[] userCertBytes = mAndroidKeyStore.get(Credentials.USER_CERTIFICATE + alias);
assertNotNull("The user certificate should exist for the generated entry", userCertBytes);
final CertificateFactory cf = CertificateFactory.getInstance("X.509");
final Certificate userCert = cf
.generateCertificate(new ByteArrayInputStream(userCertBytes));
assertTrue("Certificate should be in X.509 format", userCert instanceof X509Certificate);
final X509Certificate x509userCert = (X509Certificate) userCert;
assertEquals("PublicKey used to sign certificate should match one returned in KeyPair",
pubKey, x509userCert.getPublicKey());
assertEquals("The Subject DN should be the one passed into the params", dn,
x509userCert.getSubjectDN());
assertEquals("The Issuer DN should be the same as the Subject DN", dn,
x509userCert.getIssuerDN());
assertEquals("The Serial should be the one passed into the params", serial,
x509userCert.getSerialNumber());
assertEquals("The notBefore date should be the one passed into the params", start,
x509userCert.getNotBefore());
assertEquals("The notAfter date should be the one passed into the params", end,
x509userCert.getNotAfter());
x509userCert.verify(pubKey);
final byte[] caCerts = mAndroidKeyStore.get(Credentials.CA_CERTIFICATE + alias);
assertNull("A list of CA certificates should not exist for the generated entry", caCerts);
final byte[] pubKeyBytes = mAndroidKeyStore.getPubkey(Credentials.USER_PRIVATE_KEY + alias);
assertNotNull("The keystore should return the public key for the generated key",
pubKeyBytes);
}
}
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