Example usage for org.bouncycastle.util Arrays copyOf

Introduction

In this page you can find the example usage for org.bouncycastle.util Arrays copyOf.

Prototype

public static BigInteger[] copyOf(BigInteger[] original, int newLength) 

Source Link

Usage

From source file:com.bitsofproof.supernode.api.ExtendedKey.java

License:Apache License

public static ExtendedKey parse(String serialized) throws ValidationException {
    byte[] data = ByteUtils.fromBase58WithChecksum(serialized);
    if (data.length != 78) {
        throw new ValidationException("invalid extended key");
    }/*from   w  ww  .  j a  v a2s .  c om*/
    byte[] type = Arrays.copyOf(data, 4);
    boolean hasPrivate;
    if (Arrays.areEqual(type, xprv) || Arrays.areEqual(type, tprv)) {
        hasPrivate = true;
    } else if (Arrays.areEqual(type, xpub) || Arrays.areEqual(type, tpub)) {
        hasPrivate = false;
    } else {
        throw new ValidationException("invalid magic number for an extended key");
    }

    int depth = data[4] & 0xff;

    int parent = data[5] & 0xff;
    parent <<= 8;
    parent |= data[6] & 0xff;
    parent <<= 8;
    parent |= data[7] & 0xff;
    parent <<= 8;
    parent |= data[8] & 0xff;

    int sequence = data[9] & 0xff;
    sequence <<= 8;
    sequence |= data[10] & 0xff;
    sequence <<= 8;
    sequence |= data[11] & 0xff;
    sequence <<= 8;
    sequence |= data[12] & 0xff;

    byte[] chainCode = Arrays.copyOfRange(data, 13, 13 + 32);
    byte[] pubOrPriv = Arrays.copyOfRange(data, 13 + 32, data.length);
    Key key;
    if (hasPrivate) {
        key = new ECKeyPair(new BigInteger(1, pubOrPriv), true);
    } else {
        key = new ECPublicKey(pubOrPriv, true);
    }
    return new ExtendedKey(key, chainCode, depth, parent, sequence);
}

---

From source file:com.distrimind.util.io.RandomByteArrayOutputStream.java

License:Open Source License

public byte[] getBytes() {
    return Arrays.copyOf(bytes, length);
}

---

From source file:com.github.horrorho.inflatabledonkey.chunk.store.disk.DiskChunk.java

License:Open Source License

DiskChunk(byte[] checksum, Path file) {
    this.file = Objects.requireNonNull(file, "file");
    this.checksum = Arrays.copyOf(checksum, checksum.length);
}

---

From source file:com.github.horrorho.inflatabledonkey.chunk.store.disk.DiskChunk.java

License:Open Source License

@Override
public byte[] checksum() {
    return Arrays.copyOf(checksum, checksum.length);
}

---

From source file:com.github.horrorho.inflatabledonkey.crypto.AESGCM.java

License:Open Source License

/**
 * Returns decrypted data./*from w  w  w  . j av  a2s .c om*/
 *
 * @param key
 * @param nonce nonce/ IV
 * @param header
 * @param encryptedData
 * @param tag
 * @param optional optional AADBytes (post header)
 * @return decrypted data
 * @throws IllegalArgumentException on decryption exceptions
 * @throws NullPointerException on null arguments
 */
public static byte[] decrypt(byte[] key, byte[] nonce, byte[] header, byte[] encryptedData, byte[] tag,
        Optional<byte[]> optional) {

    try {
        GCMBlockCipher cipher = new GCMBlockCipher(new AESFastEngine());
        AEADParameters parameters = new AEADParameters(new KeyParameter(key), tag.length * 8, nonce, header);
        cipher.init(false, parameters);

        if (optional.isPresent()) {
            byte[] aadBytes = optional.get();
            cipher.processAADBytes(aadBytes, 0, aadBytes.length);
        }

        byte[] out = new byte[cipher.getOutputSize(encryptedData.length + tag.length)];

        int pos = cipher.processBytes(encryptedData, 0, encryptedData.length, out, 0);
        pos += cipher.processBytes(tag, 0, tag.length, out, pos);
        pos += cipher.doFinal(out, pos);

        return Arrays.copyOf(out, pos);

    } catch (IllegalStateException | InvalidCipherTextException ex) {
        throw new IllegalStateException("GCM decrypt error", ex);
    }
}

---

From source file:com.github.horrorho.inflatabledonkey.crypto.Curve25519.java

License:Open Source License

static byte[] clampPrivateKey(byte[] privateKey) {
    // NB little endian!
    byte[] copy = Arrays.copyOf(privateKey, privateKey.length);
    copy[0] &= 0xF8;/*from  w w w  .  ja v  a2  s  .c  o  m*/
    copy[31] &= 0x7F;
    copy[31] |= 0x40;
    return copy;
}

---

From source file:com.github.horrorho.inflatabledonkey.crypto.GCMDataB.java

License:Open Source License

public static byte[] decrypt(byte[] key, byte[] data) {
    // TODO utilize GCMAES#decrypt method
    try {//w w w.  ja v a 2  s .c om
        if (data.length < NONCE_LENGTH + TAG_LENGTH) {
            throw new IllegalArgumentException("data packet too short");
        }

        int cipherTextLength = data.length - NONCE_LENGTH - TAG_LENGTH;

        byte[] nonce = Arrays.copyOf(data, NONCE_LENGTH);

        GCMBlockCipher cipher = new GCMBlockCipher(new AESFastEngine());
        AEADParameters parameters = new AEADParameters(new KeyParameter(key), TAG_LENGTH * 8, nonce);
        cipher.init(false, parameters);

        byte[] out = new byte[cipher.getOutputSize(cipherTextLength + TAG_LENGTH)];

        int pos = cipher.processBytes(data, NONCE_LENGTH, data.length - NONCE_LENGTH, out, 0);
        pos += cipher.doFinal(out, pos);

        return Arrays.copyOf(out, pos);

    } catch (IllegalStateException | InvalidCipherTextException ex) {
        throw new IllegalArgumentException(ex);
    }
}

---

From source file:com.github.horrorho.inflatabledonkey.data.backup.Asset.java

License:Open Source License

public Optional<byte[]> fileChecksum() {
    return fileChecksum.map(bs -> Arrays.copyOf(bs, bs.length));
}

---

From source file:com.github.horrorho.inflatabledonkey.data.backup.Asset.java

License:Open Source License

public Optional<byte[]> fileSignature() {
    return fileSignature.map(bs -> Arrays.copyOf(bs, bs.length));
}

---

From source file:com.github.horrorho.inflatabledonkey.data.backup.Asset.java

License:Open Source License

public Optional<byte[]> keyEncryptionKey() {
    return keyEncryptionKey.map(bs -> Arrays.copyOf(bs, bs.length));
}

---

• «
• 1
• 2
• 3
• 4
• 5
• 6
• »