test/jdk/sun/security/pkcs11/Signature/InitAgainPSS.java

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 * 2 along with this work; if not, write to the Free Software Foundation,
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import java.security.*;
import java.security.spec.*;

/**
 * @test
 * @bug 8080462
 * @summary Make sure old state is cleared when init is called again
 * @library /test/lib ..
 * @modules jdk.crypto.cryptoki
 */
public class InitAgainPSS extends PKCS11Test {

    public static void main(String[] args) throws Exception {
        main(new InitAgainPSS(), args);
    }

    @Override
    public void main(Provider p) throws Exception {
        Signature s1;
        try {
            s1 = Signature.getInstance("RSASSA-PSS", p);
        } catch (NoSuchAlgorithmException e) {
            System.out.println("Skip testing RSASSA-PSS" +
                " due to no support");
            return;
        }

        byte[] msg = "hello".getBytes();

        Signature s2 = Signature.getInstance("RSASSA-PSS", p);

        PSSParameterSpec params = new PSSParameterSpec("SHA-256", "MGF1",
            new MGF1ParameterSpec("SHA-256"), 32,
            PSSParameterSpec.TRAILER_FIELD_BC);
        s1.setParameter(params);
        s2.setParameter(params);

        KeyPairGenerator kpg = KeyPairGenerator.getInstance("RSA", p);
        kpg.initialize(2048);
        KeyPair kp = kpg.generateKeyPair();

        s1.initSign(kp.getPrivate());

        s1.update(msg);
        s1.initSign(kp.getPrivate());
        s1.update(msg);
        // Data digested in s1:
        // Before this fix, msg | msg
        // After this fix, msg

        s2.initVerify(kp.getPublic());
        s2.update(msg);
        s2.initVerify(kp.getPublic());
        s2.update(msg);
        s2.initVerify(kp.getPublic());
        s2.update(msg);
        // Data digested in s2:
        // Before this fix, msg | msg | msg
        // After this fix, msg

        if (!s2.verify(s1.sign())) {
            throw new Exception();
        }
    }
}