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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.security;
import com.yahoo.security.AutoReloadingX509KeyManager;
import com.yahoo.security.KeyAlgorithm;
import com.yahoo.security.KeyUtils;
import com.yahoo.security.SignatureAlgorithm;
import com.yahoo.security.X509CertificateBuilder;
import com.yahoo.security.X509CertificateUtils;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.io.TempDir;
import org.mockito.ArgumentCaptor;
import org.mockito.Mockito;
import javax.security.auth.x500.X500Principal;
import java.io.File;
import java.io.IOException;
import java.math.BigInteger;
import java.nio.file.Files;
import java.nio.file.Path;
import java.security.KeyPair;
import java.security.Principal;
import java.security.cert.X509Certificate;
import java.time.Instant;
import java.util.concurrent.ScheduledExecutorService;
import static java.time.temporal.ChronoUnit.DAYS;
import static org.assertj.core.api.Assertions.assertThat;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.anyLong;
import static org.mockito.Mockito.verify;
/**
* @author bjorncs
*/
public class AutoReloadingX509KeyManagerTest {
private static final X500Principal SUBJECT = new X500Principal("CN=dummy");
@TempDir
public File tempDirectory;
@Test
void crypto_material_is_reloaded_when_scheduler_task_is_executed() throws IOException {
KeyPair keyPair = KeyUtils.generateKeypair(KeyAlgorithm.EC);
Path privateKeyFile = File.createTempFile("junit", null, tempDirectory).toPath();
Files.write(privateKeyFile, KeyUtils.toPem(keyPair.getPrivate()).getBytes());
Path certificateFile = File.createTempFile("junit", null, tempDirectory).toPath();
BigInteger serialNumberInitialCertificate = BigInteger.ONE;
X509Certificate initialCertificate = generateCertificate(keyPair, serialNumberInitialCertificate);
Files.write(certificateFile, X509CertificateUtils.toPem(initialCertificate).getBytes());
ScheduledExecutorService scheduler = Mockito.mock(ScheduledExecutorService.class);
ArgumentCaptor<Runnable> updaterTaskCaptor = ArgumentCaptor.forClass(Runnable.class);
AutoReloadingX509KeyManager keyManager = new AutoReloadingX509KeyManager(privateKeyFile, certificateFile, scheduler);
verify(scheduler).scheduleAtFixedRate(updaterTaskCaptor.capture(), anyLong(), anyLong(), any());
String[] initialAliases = keyManager.getClientAliases(keyPair.getPublic().getAlgorithm(), new Principal[]{SUBJECT});
X509Certificate[] certChain = keyManager.getCertificateChain(initialAliases[0]);
assertThat(certChain).hasSize(1);
assertThat(certChain[0].getSerialNumber()).isEqualTo(serialNumberInitialCertificate);
BigInteger serialNumberUpdatedCertificate = BigInteger.TEN;
X509Certificate updatedCertificate = generateCertificate(keyPair, serialNumberUpdatedCertificate);
Files.write(certificateFile, X509CertificateUtils.toPem(updatedCertificate).getBytes());
updaterTaskCaptor.getValue().run(); // run update task in ReloadingX509KeyManager
String[] updatedAliases = keyManager.getClientAliases(keyPair.getPublic().getAlgorithm(), new Principal[]{SUBJECT});
X509Certificate[] updatedCertChain = keyManager.getCertificateChain(updatedAliases[0]);
assertThat(updatedCertChain).hasSize(1);
assertThat(updatedCertChain[0].getSerialNumber()).isEqualTo(serialNumberUpdatedCertificate);
}
private static X509Certificate generateCertificate(KeyPair keyPair, BigInteger serialNumber) {
return X509CertificateBuilder.fromKeypair(keyPair,
SUBJECT,
Instant.EPOCH,
Instant.EPOCH.plus(1, DAYS),
SignatureAlgorithm.SHA256_WITH_ECDSA,
serialNumber)
.build();
}
}
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