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/*
 * @test
 * @bug 8336667
 * @summary Ensure the unused bytes are calculated correctly when converting
 *          indefinite length BER to DER
 * @modules java.base/sun.security.util
 * @library /test/lib
 */
import jdk.test.lib.Asserts;
import sun.security.util.DerInputStream;

import java.util.HexFormat;

public class PoC {
    public static void main(String[] args) throws Exception {
        // A BER indefinite encoding with some unused bytes at the end
        var data = HexFormat.of().parseHex("""
                2480 0401AA 0401BB 0000 -- 2 byte string
                010100 -- boolean false
                12345678 -- 4 unused bytes"""
                .replaceAll("(\\s|--.*)", ""));
        var dis = new DerInputStream(data, 0, data.length - 4, true);
        Asserts.assertEQ(dis.getDerValue().getOctetString().length, 2);
        Asserts.assertFalse(dis.getDerValue().getBoolean());
        dis.atEnd();
    }
}