Example usage for java.util Random nextBytes

Introduction

In this page you can find the example usage for java.util Random nextBytes.

Prototype

public void nextBytes(byte[] bytes) 

Source Link

Document

Generates random bytes and places them into a user-supplied byte array.

Usage

From source file:corner.encrypt.services.impl.CipherKey.java

public void createRandomCipher() {
    SecureRandom secureRandom = new SecureRandom();
    Random random = new Random(secureRandom.nextLong());
    cipher = new byte[cipherLen];
    random.nextBytes(cipher);
    persistCipher();//from w  w w . j a v a 2s .  c  o m
}

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From source file:org.apache.wink.itest.standard.JAXRSFileTest.java

/**
 * Tests receiving an empty byte array./*w  ww  .  j av a2  s  .c  o  m*/
 * 
 * @throws HttpException
 * @throws IOException
 */
public void testWithRequestAcceptHeaderWillReturnRequestedContentType() throws HttpException, IOException {
    HttpClient client = new HttpClient();

    PutMethod putMethod = new PutMethod(getBaseURI() + "/providers/standard/file");
    byte[] barr = new byte[1000];
    Random r = new Random();
    r.nextBytes(barr);
    putMethod.setRequestEntity(new InputStreamRequestEntity(new ByteArrayInputStream(barr), "any/type"));
    try {
        client.executeMethod(putMethod);
        assertEquals(204, putMethod.getStatusCode());
    } finally {
        putMethod.releaseConnection();
    }

    GetMethod getMethod = new GetMethod(getBaseURI() + "/providers/standard/file");
    getMethod.addRequestHeader("Accept", "mytype/subtype");
    try {
        client.executeMethod(getMethod);
        assertEquals(200, getMethod.getStatusCode());
        InputStream is = getMethod.getResponseBodyAsStream();

        byte[] receivedBArr = new byte[1000];
        DataInputStream dis = new DataInputStream(is);
        dis.readFully(receivedBArr);

        int checkEOF = dis.read();
        assertEquals(-1, checkEOF);
        for (int c = 0; c < barr.length; ++c) {
            assertEquals(barr[c], receivedBArr[c]);
        }
        assertEquals("mytype/subtype", getMethod.getResponseHeader("Content-Type").getValue());
        assertEquals(barr.length,
                Integer.valueOf(getMethod.getResponseHeader("Content-Length").getValue()).intValue());
    } finally {
        getMethod.releaseConnection();
    }
}

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From source file:org.nickelproject.util.IoUtilTest.java

@Test
public void testDeflateMiscData() throws Exception {
    final Random vRandomizer = new Random(1234567);
    final byte[] vData = new byte[testSize];
    vRandomizer.nextBytes(vData);
    testDeflateInflate(vData);//  ww  w. j a va  2  s .  c om
}

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From source file:com.nesscomputing.cache.TestBase64Compatible.java

@Test
public void testEqualEncoding() {
    final Random rand = new Random();

    for (int i = 0; i < 100; i++) {
        final byte[] bytes = new byte[i];
        rand.nextBytes(bytes);

        final byte[] base64Bytes = Base64.encode(bytes);
        final byte[] apache64Bytes = new org.apache.commons.codec.binary.Base64().encode(bytes);

        Assert.assertEquals(base64Bytes.length, apache64Bytes.length);
        for (int j = 0; j < base64Bytes.length; j++) {
            Assert.assertEquals(base64Bytes[j], apache64Bytes[j]);
        }/*  w w  w.j a  va 2  s.co  m*/
    }
}

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From source file:com.nesscomputing.cache.TestBase64Compatible.java

@Test
public void testEncoding() {
    final Random rand = new Random();

    for (int i = 0; i < 100; i++) {
        final byte[] bytes = new byte[i];
        rand.nextBytes(bytes);

        final byte[] base64Bytes = Base64.encode(bytes);
        final byte[] decoded = new org.apache.commons.codec.binary.Base64().decode(base64Bytes);

        Assert.assertEquals(bytes.length, decoded.length);
        for (int j = 0; j < bytes.length; j++) {
            Assert.assertEquals(bytes[j], decoded[j]);
        }//from w  ww . j a  va2 s  .c o m

    }
}

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From source file:com.nesscomputing.cache.TestBase64Compatible.java

@Test
public void testDecode() {
    final Random rand = new Random();

    for (int i = 0; i < 100; i++) {
        final byte[] bytes = new byte[i];
        rand.nextBytes(bytes);

        final byte[] base64Bytes = new org.apache.commons.codec.binary.Base64().encode(bytes);
        final byte[] decoded = Base64.decode(base64Bytes);

        Assert.assertEquals(bytes.length, decoded.length);
        for (int j = 0; j < bytes.length; j++) {
            Assert.assertEquals(bytes[j], decoded[j]);
        }//  w  ww  . jav  a  2 s  . c om

    }
}

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From source file:my.adam.smo.EncryptionTest.java

@Test
public void symmetricEncryptionGaveDifferentCryptogramForSamePlainText() {
    ApplicationContext clientContext = new ClassPathXmlApplicationContext("Context.xml");
    SymmetricEncryptionBox box = clientContext.getBean(SymmetricEncryptionBox.class);
    int plainTextLength = 17;
    Random random = new Random();

    byte[] plainText = new byte[plainTextLength];
    random.nextBytes(plainText);

    byte[] cryptogram1 = box.encrypt(plainText);
    byte[] cryptogram2 = box.encrypt(plainText);

    Assert.assertFalse("cryptograms are same", Arrays.equals(cryptogram1, cryptogram2));

    byte[] decrypted1 = box.decrypt(cryptogram1);
    Assert.assertTrue("unable to decrypt", Arrays.equals(plainText, decrypted1));

    byte[] decrypted2 = box.decrypt(cryptogram2);
    Assert.assertTrue("unable to decrypt", Arrays.equals(plainText, decrypted2));
}

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From source file:org.apache.hadoop.hdfs.TestSetTimes.java

private FSDataOutputStream writeFile(FileSystem fileSys, Path name, int repl) throws IOException {
    FSDataOutputStream stm = fileSys.create(name, true, fileSys.getConf().getInt("io.file.buffer.size", 4096),
            (short) repl, (long) blockSize);
    byte[] buffer = new byte[fileSize];
    Random rand = new Random(seed);
    rand.nextBytes(buffer);
    stm.write(buffer);//from ww  w.ja  v a 2  s  .c o m
    return stm;
}

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From source file:org.apache.wink.itest.standard.JAXRSStreamingOutputTest.java

/**
 * Tests posting to a StreamingOutput and then returning StreamingOutput.
 * //from  w w w  .j  a va  2 s  .c  o  m
 * @throws HttpException
 * @throws IOException
 */
public void testPostStreamingOutput() throws HttpException, IOException {
    HttpClient client = new HttpClient();

    PostMethod postMethod = new PostMethod(getBaseURI() + "/providers/standard/streamingoutput");
    byte[] barr = new byte[100000];
    Random r = new Random();
    r.nextBytes(barr);
    postMethod.setRequestEntity(new InputStreamRequestEntity(new ByteArrayInputStream(barr), "text/plain"));
    postMethod.addRequestHeader("Accept", "text/plain");
    try {
        client.executeMethod(postMethod);

        assertEquals(200, postMethod.getStatusCode());
        InputStream is = postMethod.getResponseBodyAsStream();

        byte[] receivedBArr = new byte[barr.length];
        DataInputStream dis = new DataInputStream(is);
        dis.readFully(receivedBArr);

        int checkEOF = dis.read();
        assertEquals(-1, checkEOF);
        for (int c = 0; c < barr.length; ++c) {
            assertEquals(barr[c], receivedBArr[c]);
        }
        assertEquals("text/plain", postMethod.getResponseHeader("Content-Type").getValue());
        Header contentLengthHeader = postMethod.getResponseHeader("Content-Length");
        assertNull(contentLengthHeader == null ? "null" : contentLengthHeader.getValue(), contentLengthHeader);
    } finally {
        postMethod.releaseConnection();
    }
}

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From source file:com.github.lukaszbudnik.dqueue.QueueClientPerformanceTest.java

@Test
public void doItNoFilters() throws ExecutionException, InterruptedException {

    byte[] data = new byte[2045];
    Random r = new Random();
    r.nextBytes(data);
    ByteBuffer buffer = ByteBuffer.wrap(data);

    IntStream.range(0, NUMBER_OF_ITERATIONS).forEach((i) -> {
        UUID startTime = UUIDs.timeBased();
        Future<UUID> id = queueClient.publish(new Item(startTime, buffer));
        try {// w  ww .j  a  v a 2  s  .c  o m
            id.get();
        } catch (Exception e) {
            fail(e.getMessage());
        }
    });

    IntStream.range(0, NUMBER_OF_ITERATIONS).forEach((i) -> {
        Future<Optional<Item>> itemFuture = queueClient.consume();

        Optional<Item> item = null;
        try {
            item = itemFuture.get();
        } catch (Exception e) {
            fail(e.getMessage());
        }

        assertTrue(item.isPresent());
    });

}

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