Examples of javax.crypto.NullCipher

javax.crypto.NullCipher
This class provides an identity cipher that does not transform the input data in any way. The encrypted data is identical to the plain text.

     * stream.
     */
    public void testRead3() throws Exception {
        byte[] data = new byte[] { -127, -100, -50, -10, -1, 0, 1, 10, 50, 127 };
        TestInputStream tis = new TestInputStream(data);
        CipherInputStream cis = new CipherInputStream(tis, new NullCipher());


        int expected = data.length;
        byte[] result = new byte[expected];


        int skip = 2;

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     * bytes.
     */
    public void testSkip() throws Exception {
        byte[] data = new byte[] { -127, -100, -50, -10, -1, 0, 1, 10, 50, 127 };
        TestInputStream tis = new TestInputStream(data);
        CipherInputStream cis = new CipherInputStream(tis, new NullCipher());
        int expected = data.length;
        byte[] result = new byte[expected];


        int skipped = (int) cis.skip(2);
        int ind = skipped;

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     * available() method testing. Tests that the method always return 0.
     */
    public void testAvailable() throws Exception {
        byte[] data = new byte[] { -127, -100, -50, -10, -1, 0, 1, 10, 50, 127 };
        TestInputStream tis = new TestInputStream(data);
        CipherInputStream cis = new CipherInputStream(tis, new NullCipher());
        assertEquals("The returned by available() method value "
                + "should be 0.", cis.available(), 0);
    }

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     * method of the underlying input stream.
     */
    public void testClose() throws Exception {
        byte[] data = new byte[] { -127, -100, -50, -10, -1, 0, 1, 10, 50, 127 };
        TestInputStream tis = new TestInputStream(data);
        CipherInputStream cis = new CipherInputStream(tis, new NullCipher());
        cis.close();
        assertTrue("The close() method should call the close() method "
                + "of its underlying input stream.", tis.wasClosed());
    }

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     * markSupported() method testing. Tests that mark is not supported.
     */
    public void testMarkSupported() {
        byte[] data = new byte[] {-127, -100, -50, -10, -1, 0, 1, 10, 50, 127};
        TestInputStream tis = new TestInputStream(data);
        CipherInputStream cis = new CipherInputStream(tis, new NullCipher());
        assertFalse("The returned by markSupported() method value "
                + "should be false.", cis.markSupported());
    }

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     * the underlying output stream.
     */
    public void testWrite1() throws Exception {
        byte[] data = new byte[] { -127, -100, -50, -10, -1, 0, 1, 10, 50, 127 };
        TestOutputStream tos = new TestOutputStream();
        CipherOutputStream cos = new CipherOutputStream(tos, new NullCipher());
        for (int i = 0; i < data.length; i++) {
            cos.write(data[i]);
        }
        cos.flush();
        byte[] result = tos.toByteArray();

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     * to the underlying output stream.
     */
    public void testWrite2() throws Exception {
        byte[] data = new byte[] { -127, -100, -50, -10, -1, 0, 1, 10, 50, 127 };
        TestOutputStream tos = new TestOutputStream();
        CipherOutputStream cos = new CipherOutputStream(tos, new NullCipher());
        cos.write(data);
        cos.flush();
        byte[] result = tos.toByteArray();
        if (!Arrays.equals(result, data)) {
            fail("CipherOutputStream wrote incorrect data.");

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     * write(byte[] b, int off, int len) method testing.
     */
    public void testWrite3() throws Exception {
        byte[] data = new byte[] { -127, -100, -50, -10, -1, 0, 1, 10, 50, 127 };
        TestOutputStream tos = new TestOutputStream();
        CipherOutputStream cos = new CipherOutputStream(tos, new NullCipher());
        for (int i = 0; i < data.length; i++) {
            cos.write(data, i, 1);
        }
        cos.flush();
        byte[] result = tos.toByteArray();

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     * @tests write(byte[] b, int off, int len)
     */
    public void testWrite4() throws Exception {
      //Regression for HARMONY-758
      try {
        new CipherOutputStream(new BufferedOutputStream((OutputStream) null), new NullCipher()).write(new byte[] {0}, 1, Integer.MAX_VALUE);
      } catch (IllegalArgumentException e) {
      }
    }

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     * @tests write(byte[] b, int off, int len)
     */
    public void testWrite5() throws Exception {
      //Regression for HARMONY-758
        Cipher cf = Cipher.getInstance("DES/CBC/PKCS5Padding");
        NullCipher nc = new NullCipher();
        CipherOutputStream stream1 = new CipherOutputStream(new BufferedOutputStream((OutputStream) null), nc);
        CipherOutputStream stream2 = new CipherOutputStream(stream1, cf);
        CipherOutputStream stream3 = new CipherOutputStream(stream2, nc);
        stream3.write(new byte[] {0}, 0, 0);
       //no exception expected

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