test/jdk/sun/security/util/DerOutputStream/DerTimeEncoding.java

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/*
 * @test
 * @bug 8279254
 * @summary Changed time encoding to correctly use UTC between 1950-2050 and GeneralizedTime otherwise
 * @library /test/lib
 * @modules java.base/sun.security.util
 */

import java.util.Date;
import sun.security.util.DerOutputStream;
import sun.security.util.DerValue;

public class DerTimeEncoding {
    public static void main(String args[]) throws Exception {
        //Check that dates after 2050 use GeneralizedTime
        DerOutputStream out = new DerOutputStream();
        Date generalizedTimeDate = new Date(2688854400000L); // Test date is 3/17/2055
        out.putTime(generalizedTimeDate);
        DerValue val = new DerValue(out.toByteArray());
        if (val.tag != DerValue.tag_GeneralizedTime) {
            System.out.println("putTime incorrectly serialized to UTC time instead of GeneralizedTime");
            throw new RuntimeException("Incorrect Der date format");
        }

        //Check dates between 1950-2050 use UTC time
        out = new DerOutputStream();
        Date utcDate = new Date(242092800000L); //Test date is 9/3/1977
        out.putTime(utcDate);
        val = new DerValue(out.toByteArray());
        if (val.tag != DerValue.tag_UtcTime) {
            System.out.println("putTime incorrectly serialized to Generalized time instead of UTC time");
            throw new RuntimeException("Incorrect Der date format");
        }
    }
}