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/*
* Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @bug 8221257 8222275
* @summary Improve serial number generation mechanism for keytool -gencert
* @library /test/lib
* @key randomness
*/
import jdk.test.lib.SecurityTools;
import java.io.File;
import java.io.FileInputStream;
import java.math.BigInteger;
import java.security.KeyStore;
import java.security.cert.CertificateFactory;
import java.security.cert.X509Certificate;
public class Serial64 {
public static void main(String[] args) throws Exception {
boolean see64 = false;
see64 |= see64(genkeypair("ca"));
see64 |= see64(genkeypair("user"));
keytool("-certreq -alias user -file req");
for (int i = 3; i <= 30; i++) {
see64 |= see64(gencert());
if (i >= 10 && see64) {
// As long as we have generated >=10 (non-negative) SNs and
// at least one is 64 bit it's good to go.
return;
}
}
// None is 64 bit. There is a chance of 2^-30 we reach here.
// Or, maybe we do have a bug?
throw new RuntimeException("No 64-bit serial number");
}
static boolean see64(BigInteger sn) {
System.out.println(sn.toString(16));
if (sn.signum() != 1) {
throw new RuntimeException("Must be positive");
}
return sn.bitLength() == 64;
}
static void keytool(String s) throws Exception {
SecurityTools.keytool("-storepass changeit -keypass changeit "
+ "-keystore ks -keyalg rsa " + s)
.shouldHaveExitValue(0);
}
static BigInteger genkeypair(String a) throws Exception {
keytool("-genkeypair -alias " + a + " -dname CN=" + a);
return ((X509Certificate)KeyStore.getInstance(
new File("ks"), "changeit".toCharArray())
.getCertificate(a)).getSerialNumber();
}
static BigInteger gencert() throws Exception {
keytool("-gencert -alias ca -infile req -outfile cert");
try (FileInputStream fis = new FileInputStream("cert")) {
return ((X509Certificate)CertificateFactory.getInstance("X.509")
.generateCertificate(fis)).getSerialNumber();
}
}
}
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