/*

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 *

 * This code is free software; you can redistribute it and/or modify it

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 * published by the Free Software Foundation.

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 * 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

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 * 2 along with this work; if not, write to the Free Software Foundation,

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/*

 * @test

 * @bug 6994008

 * @summary basic test for RSA/ECB/NoPadding cipher

 * @author Valerie Peng

 * @key randomness

 * @modules jdk.crypto.cryptoki

 * @run main/othervm TestRawRSACipher

 * @run main/othervm TestRawRSACipher sm

 */

import java.security.GeneralSecurityException;

import java.security.KeyPair;

import java.security.KeyPairGenerator;

import java.security.Provider;

import java.util.Arrays;

import java.util.Random;

import javax.crypto.Cipher;

public class TestRawRSACipher extends PKCS11Test {

    @Override

    public void main(Provider p) throws Exception {

        try {

            Cipher.getInstance("RSA/ECB/NoPadding", p);

        } catch (GeneralSecurityException e) {

            System.out.println("Not supported by provider, skipping");

            return;

        }

        final int KEY_LEN = 1024;

        KeyPairGenerator kpGen = KeyPairGenerator.getInstance("RSA", p);

        kpGen.initialize(KEY_LEN);

        KeyPair kp = kpGen.generateKeyPair();

        Random random = new Random();

        byte[] plainText, cipherText, recoveredText;

        plainText = new byte[KEY_LEN/8];

        random.nextBytes(plainText);

        plainText[0] = 0; // to ensure that it's less than modulus

        Cipher c1 = Cipher.getInstance("RSA/ECB/NoPadding", p);

        Cipher c2 = Cipher.getInstance("RSA/ECB/NoPadding", "SunJCE");

        c1.init(Cipher.ENCRYPT_MODE, kp.getPublic());

        c2.init(Cipher.DECRYPT_MODE, kp.getPrivate());

        cipherText = c1.doFinal(plainText);

        recoveredText = c2.doFinal(cipherText);

        if (!Arrays.equals(plainText, recoveredText)) {

            throw new RuntimeException("E/D Test against SunJCE Failed!");

        }

        c2.init(Cipher.ENCRYPT_MODE, kp.getPublic());

        c1.init(Cipher.DECRYPT_MODE, kp.getPrivate());

        cipherText = c2.doFinal(plainText);

        recoveredText = c1.doFinal(cipherText);

        if (!Arrays.equals(plainText, recoveredText)) {

            throw new RuntimeException("D/E Test against SunJCE Failed!");

        }

        System.out.println("Test Passed");

    }

    public static void main(String[] args) throws Exception {

        main(new TestRawRSACipher(), args);

    }

}