Example usage for java.nio ByteBuffer putLong

Introduction

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

Prototype

public abstract ByteBuffer putLong(long value);

Source Link

Document

Writes the given long to the current position and increases the position by 8.

Usage

From source file:org.linguafranca.pwdb.kdbx.dom.DomHelper.java

static String base64FromUuid(UUID uuid) {
    byte[] buffer = new byte[16];
    ByteBuffer b = ByteBuffer.wrap(buffer);
    b.putLong(uuid.getMostSignificantBits());
    b.putLong(8, uuid.getLeastSignificantBits());
    // round the houses for Android
    return new String(Base64.encodeBase64(buffer));
}

---

From source file:org.linguafranca.pwdb.kdbx.dom.DomHelper.java

static String hexStringFromUuid(UUID uuid) {
    byte[] buffer = new byte[16];
    ByteBuffer b = ByteBuffer.wrap(buffer);
    b.putLong(uuid.getMostSignificantBits());
    b.putLong(8, uuid.getLeastSignificantBits());
    // round the houses for Android
    return new String(Hex.encodeHex(buffer));
}

---

From source file:org.janusgraph.TestByteBuffer.java

private static long testByte() {
    LongObjectMap<ConcurrentSkipListSet<ByteEntry>> tx = new LongObjectHashMap<ConcurrentSkipListSet<ByteEntry>>(
            NUM);// w w w  .j  a v a 2  s.co m
    for (int i = 0; i < NUM; i++) {
        tx.put(i, new ConcurrentSkipListSet<ByteEntry>());
    }
    for (int i = 0; i < NUM; i++) {
        for (int j = 0; j < NUM; j++) {
            if (i == j)
                continue;
            if (Math.random() < FRACTION) {
                ByteBuffer key = ByteBuffer.allocate(16);
                key.putLong(5).putLong(j).flip();
                ByteBuffer value = ByteBuffer.allocate(4);
                value.putInt(random.nextInt(ROUNDSIZE)).flip();
                tx.get(i).add(new ByteEntry(key, value));
            }
        }
    }
    long time = System.currentTimeMillis();
    long sum = 0;
    for (int t = 0; t < TRIALS; t++) {
        for (int i = 0; i < NUM; i++) {
            for (Vertex v : (new ByteVertex(i, tx)).getNeighbors(0)) {
                sum += v.getId();
            }
        }
    }
    time = System.currentTimeMillis() - time;
    return time;
}

---

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

protected static String base64Uuid(UUID uuid) {

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

    return Base64.encodeBase64URLSafeString(bb.array());
}

---

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:org.asynchttpclient.ntlm.NtlmTest.java

private static byte[] longToBytes(long x) {
    ByteBuffer buffer = ByteBuffer.allocate(Long.BYTES);
    buffer.putLong(x);
    return buffer.array();
}

---

From source file:org.wso2.carbon.identity.application.authenticator.totp.TOTPTokenGenerator.java

/**
 * Create the TOTP token for a given secret key and time index.
 *
 * @param secret    Secret key in binary format
 * @param timeIndex Number of Time elapse from the unix epoch time
 * @return TOTP token value as a long//from  w ww. ja  v  a  2 s .c  o  m
 * @throws NoSuchAlgorithmException Could not find the specific algorithm
 * @throws InvalidKeyException      invalid signKey
 */
private static long getCode(byte[] secret, long timeIndex)
        throws NoSuchAlgorithmException, InvalidKeyException {
    // Building the secret key specification for the HmacSHA1 algorithm.
    SecretKeySpec signKey = new SecretKeySpec(secret, TOTPAuthenticatorConstants.HMAC_ALGORITHM);
    ByteBuffer buffer = ByteBuffer.allocate(8);
    buffer.putLong(timeIndex);
    byte[] timeBytes = buffer.array();
    // Getting an HmacSHA1 algorithm implementation from the Java Cryptography Extension (JCE).
    Mac mac = Mac.getInstance(TOTPAuthenticatorConstants.HMAC_ALGORITHM);
    // Initializing the MAC algorithm.
    mac.init(signKey);
    // Processing the instant of time and getting the encrypted data.
    byte[] hash = mac.doFinal(timeBytes);
    // Building the validation code performing dynamic truncation.
    int offset = hash[19] & 0xf;
    long truncatedHash = hash[offset] & 0x7f;
    for (int i = 1; i < 4; i++) {
        truncatedHash <<= 8;
        truncatedHash |= hash[offset + i] & 0xff;
    }
    truncatedHash %= 1000000;
    return truncatedHash;
}

---

From source file:Main.java

static byte[] decryptJWE(String jwe, Key privRsaKey) {
    // Log.d("","decryptJWE");

    try {//from w w w .ja  va 2s. c o m
        // split jwe string
        StringTokenizer tokens = new StringTokenizer(jwe, ".");
        int count = tokens.countTokens();
        // Log.d("","parts.length: "+count);

        if (count != 5)
            return null;

        String jweProtectedHeader64 = tokens.nextToken();
        String jweEncrypted64 = tokens.nextToken();
        String jweInitVector64 = tokens.nextToken();
        String cryptedBytes64 = tokens.nextToken();
        String auth_tag64 = tokens.nextToken();

        // decrypt cek using private rsa key
        byte[] cek = decryptRsaB64(jweEncrypted64, privRsaKey);

        // check cek result byte array
        if (cek == null || cek.length == 0 || (cek.length % 2) != 0)
            return null;

        int keySize = cek.length / 2;
        Log.d("", "Decryption AES: " + keySize * 8);

        // build aes_key and hmac_key
        byte aes_key[] = new byte[keySize];
        byte hmac_key[] = new byte[keySize];

        System.arraycopy(cek, 0, hmac_key, 0, keySize);
        System.arraycopy(cek, keySize, aes_key, 0, keySize);

        // decode initialization vector
        byte[] iv_key = decodeB64(jweInitVector64);

        Log.d("", "hmac_key: " + bytesToHex(hmac_key));
        Log.d("", "aes_key:  " + bytesToHex(aes_key));
        Log.d("", "iv_key:   " + bytesToHex(iv_key));

        // decrypt content using aes_key and iv_key
        byte[] cryptedBytes = decodeB64(cryptedBytes64);
        Cipher decrypt = Cipher.getInstance("AES/CBC/PKCS5Padding", "SC");
        decrypt.init(Cipher.DECRYPT_MODE, new SecretKeySpec(aes_key, "AES"), new IvParameterSpec(iv_key));
        byte[] decryptedBytes = decrypt.doFinal(cryptedBytes);

        Log.d("", "decryptedBytes:");
        Log.d("", bytesToHex(decryptedBytes));

        // validation verification
        byte[] aad = jweProtectedHeader64.getBytes();
        long al = aad.length * 8;

        // concatenate aad, iv_key, cryptedBytes and al 
        byte[] hmacData = new byte[aad.length + iv_key.length + cryptedBytes.length + 8];
        int offset = 0;
        System.arraycopy(aad, offset, hmacData, 0, aad.length);
        offset += aad.length;
        System.arraycopy(iv_key, 0, hmacData, offset, iv_key.length);
        offset += iv_key.length;
        System.arraycopy(cryptedBytes, 0, hmacData, offset, cryptedBytes.length);
        offset += cryptedBytes.length;
        ByteBuffer buffer = ByteBuffer.allocate(8);
        buffer.putLong(al);
        System.arraycopy(buffer.array(), 0, hmacData, offset, 8);

        // compute hmac
        Mac hmac = Mac.getInstance("HmacSHA256", "SC");
        hmac.init(new SecretKeySpec(hmac_key, "HmacSHA256"));
        byte[] hmacValue = hmac.doFinal(hmacData);

        // pick authentication tag
        byte[] authTag = Arrays.copyOf(hmacValue, 16);

        // validate authentication tag
        byte[] authTagRead = decodeB64(auth_tag64);
        for (int i = 0; i < 16; i++) {
            if (authTag[i] != authTagRead[i]) {
                Log.d("", "validation failed");
                return decryptedBytes;
            }
        }

        Log.d("", "validation success");

        // validation success
        return decryptedBytes;

    } catch (Exception e) {
        e.printStackTrace();
    }

    return null;
}

---

From source file:ec.edu.chyc.manejopersonal.util.ServerUtils.java

/***
 * Devuelve un UUID generado y codificado en Base64
 *
 * @return Uuid codificado en Base64/*  www.  j  a  va  2  s  .  co  m*/
 */
public static String generateB64Uuid() {
    UUID uuid = UUID.randomUUID();
    ByteBuffer uuidBytes = ByteBuffer.wrap(new byte[16]);
    uuidBytes.putLong(uuid.getMostSignificantBits()).putLong(uuid.getLeastSignificantBits());
    String asB64 = Base64.getEncoder().encodeToString(uuidBytes.array());
    return asB64;
}

---

From source file:info.gehrels.flockDBClient.ByteHelper.java

static ByteBuffer asByteBufferOrNull(long... destinationIds) {
    ByteBuffer buf = null;
    if (isNotEmpty(destinationIds)) {
        buf = ByteBuffer.wrap(new byte[destinationIds.length * (Long.SIZE / 8)]);
        buf.order(ByteOrder.LITTLE_ENDIAN);
        for (long destinationId : destinationIds) {
            buf.putLong(destinationId);
        }/*from   w  w  w  .  j a  v  a  2s .  c o  m*/
        buf.rewind();
    }
    return buf;
}

---

• «
• 1
• 2
• 3
• 4
• 5
• 6
• 7
• 8
• 9
• 10
• 11
• 12
• 13
• 14
• 15
• 16
• 17
• 18
• 19
• 20
• 21
• »