Example usage for java.nio ByteBuffer wrap

List of usage examples for java.nio ByteBuffer wrap

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Introduction

In this page you can find the example usage for java.nio ByteBuffer wrap.

Prototype

public static ByteBuffer wrap(byte[] array)

Source Link

Document

Creates a new byte buffer by wrapping the given byte array.

Usage

From source file:Main.java

public static ByteBuffer readBytes(String file) throws IOException {
    ByteArrayOutputStream dataOut = new ByteArrayOutputStream();
    FileChannel fChannel = new RandomAccessFile(file, "r").getChannel();
    fChannel.transferTo(0, fChannel.size(), Channels.newChannel(dataOut));
    fChannel.close();/* w  w  w.j a v  a  2s. c o  m*/
    return ByteBuffer.wrap(dataOut.toByteArray());
}

From source file:com.scf.utils.UUIDUtilies.java

protected static String base58Uuid(UUID uuid) {

    ByteBuffer bb = ByteBuffer.wrap(new byte[16]);
    bb.putLong(uuid.getMostSignificantBits());
    bb.putLong(uuid.getLeastSignificantBits());

    return Base58.encode(bb.array());
}

From source file:adminpassword.Decryption.java

@SuppressWarnings("static-access")
public String decrypt(String encryptedText, String idKey) throws Exception {
    String password = idKey;/*from  w w  w. j av  a 2  s. c o m*/

    Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");

    //strip off the salt and iv
    ByteBuffer buffer = ByteBuffer.wrap(new Base64().decode(encryptedText));
    byte[] saltBytes = new byte[20];
    buffer.get(saltBytes, 0, saltBytes.length);
    byte[] ivBytes1 = new byte[cipher.getBlockSize()];
    buffer.get(ivBytes1, 0, ivBytes1.length);
    byte[] encryptedTextBytes = new byte[buffer.capacity() - saltBytes.length - ivBytes1.length];
    buffer.get(encryptedTextBytes);

    // Deriving the key
    SecretKeyFactory factory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
    PBEKeySpec spec = new PBEKeySpec(password.toCharArray(), saltBytes, 65556, 256);

    SecretKey secretKey = factory.generateSecret(spec);
    SecretKeySpec secret = new SecretKeySpec(secretKey.getEncoded(), "AES");
    cipher.init(Cipher.DECRYPT_MODE, secret, new IvParameterSpec(ivBytes1));

    byte[] decryptedTextBytes = null;
    try {
        decryptedTextBytes = cipher.doFinal(encryptedTextBytes);

    } catch (IllegalBlockSizeException e) {
        e.printStackTrace();
    } catch (BadPaddingException e) {
        e.printStackTrace();
    }

    return new String(decryptedTextBytes);
}

From source file:eu.pursuit.core.ItemName.java

public static ItemName parseSerializedName(byte[] array, int segmentSize) {
    if (array.length % segmentSize != 0) {
        throw new IllegalArgumentException(
                "array length (" + array.length + ") not a multiple of segmentSize (" + segmentSize + ")");
    }/*from  w w  w .j a v  a 2  s  . co  m*/

    ByteBuffer bbuffer = ByteBuffer.wrap(array);
    List<ByteIdentifier> list = new ArrayList<ByteIdentifier>();
    int howmany = array.length / segmentSize;
    for (int i = 0; i < howmany - 1; i++) {
        byte[] arr = new byte[segmentSize];
        bbuffer.get(arr);
        list.add(new ByteIdentifier(arr));
    }
    ScopeID scope = new ScopeID(list);

    byte[] arr = new byte[segmentSize];
    bbuffer.get(arr);
    ByteIdentifier rid = new ByteIdentifier(arr);

    return new ItemName(scope, rid);
}

From source file:com.google.mr4c.util.ByteBufferInputStreamTest.java

@Test
public void testReadFully() throws Exception {
    byte[] data = new byte[] { -45, 76, 93, -112, 0 };
    ByteBuffer buf = ByteBuffer.wrap(data);
    ByteBufferInputStream stream = new ByteBufferInputStream(buf);
    byte[] result = IOUtils.toByteArray(stream);
    stream.close();/*  w  w w. j  av  a2 s  .c o m*/
    assertTrue(Arrays.equals(data, result));
}

From source file:com.hengyi.japp.tools.UuidUtils.java

public static String decodeBase58Uuid(String base58uuid) {
    byte[] byUuid = Base58.decode(base58uuid);
    ByteBuffer bb = ByteBuffer.wrap(byUuid);
    UUID uuid = new UUID(bb.getLong(), bb.getLong());
    return uuid.toString();
}

From source file:eu.databata.engine.util.PropagationUtils.java

/**
 * This method is suitable for reading files not larger than 2 GB.
 *///from  ww  w .j  av  a2  s.c o  m
private static String readFile(File file, String encoding) {
    String result = null;
    try {
        FileInputStream inputStream = new FileInputStream(file);
        try {
            byte[] bytes = new byte[(int) inputStream.getChannel().size()];
            inputStream.read(bytes);
            result = Charset.forName(encoding).decode(ByteBuffer.wrap(bytes)).toString();
        } finally {
            inputStream.close();
        }
    } catch (Exception e) {
        LOG.warn("Failed to read file: " + file.getName());
        throw new RuntimeException(e);
    }
    return dos2Unix(result);
}

From source file:com.nestedbird.util.UUIDConverter.java

/**
 * Turns a UUID in string format to a Base64 encoded version
 *
 * @param uuidString String representation of the uuid
 * @return base64 encoded version of the uuid
 * @throws IllegalArgumentException String must be a valid uuid
 * @throws NullPointerException     String cannot be null
 *///from   w  w  w . j  a v a 2 s .  c o  m
public static String toBase64(final String uuidString) {
    if (uuidString == null)
        throw new NullPointerException("String cannot be null");
    if (!isUUID(uuidString))
        throw new IllegalArgumentException("string must be a valid uuid");

    final UUID uuid = UUID.fromString(uuidString);
    final ByteBuffer bb = ByteBuffer.wrap(new byte[16]);
    bb.putLong(uuid.getMostSignificantBits());
    bb.putLong(uuid.getLeastSignificantBits());
    return Base64.encodeBase64URLSafeString(bb.array());
}

From source file:ninja.siden.internal.RendererSelectorTest.java

@Parameters(name = "{0}")
public static Iterable<Object[]> parameters() throws Exception {
    int port = 8000;
    return Arrays.asList(new Object[][] { { "String", "Hello", port++ }, { "File", tmp().toFile(), port++ },
            { "Path", tmp(), port++ }, { "FileChannel", FileChannel.open(tmp()), port++ },
            { "byteArray", "Hello".getBytes(), port++ },
            { "ByteBuffer", ByteBuffer.wrap("Hello".getBytes()), port++ }, { "URI", tmp().toUri(), port++ },
            { "URL", tmp().toUri().toURL(), port++ }, { "Reader", Files.newBufferedReader(tmp()), port++ },
            { "InputStream", new ByteArrayInputStream("Hello".getBytes()), port++ },
            { "CharSequence", new StringBuilder("Hello"), port++ },

    });/*from ww  w .ja  v  a 2  s . c  o  m*/
}

From source file:com.crushpaper.UuidlIdGenerator.java

@Override
public String getAnotherId() {
    final UUID uuid = UUID.randomUUID();
    final ByteBuffer bb = ByteBuffer.wrap(new byte[16]);
    bb.putLong(uuid.getMostSignificantBits());
    bb.putLong(uuid.getLeastSignificantBits());
    return Base64.encodeBase64URLSafeString(bb.array());
}