Examples of java.math.BigInteger.toByteArray()

java.math.BigInteger.toByteArray()
Returns a byte array containing the two's-complement representation of this BigInteger. The byte array will be in big-endian byte-order: the most significant byte is in the zeroth element. The array will contain the minimum number of bytes required to represent this BigInteger, including at least one sign bit, which is {@code (ceil((this.bitLength() +1)/8))}. (This representation is compatible with the {@link #BigInteger(byte[]) (byte[])} constructor.) @return a byte array containing the two's-complement representation ofthis BigInteger. @see #BigInteger(byte[])


        byte[] output = key.getModulus().toByteArray();
        Arrays.fill(output, (byte)0);
        System.arraycopy(m1m2Crypt.toByteArray(), 0, output, output.length
                - m1m2Crypt.toByteArray().length,
                m1m2Crypt.toByteArray().length);


        return output;
    }


    /**

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                                      IllegalBlockSizeException
   {
      SecretKeySpec key = new SecretKeySpec(internalKey, "Blowfish");


      BigInteger n = new BigInteger((String)secret, 16);
      byte[] encoding = n.toByteArray();


      // JBAS-3457: fix leading zeros
      if (encoding.length % 8 != 0)
      {
         int length = encoding.length;

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    private static byte[] incrementID(byte[] key) {


        BigInteger id = new BigInteger(key);
        id = id.add(BigInteger.valueOf(1));
        return id.toByteArray();
    }


    /**
     * Holds the class format key for a class, maintains a reference to the
     * ObjectStreamClass.  Other fields can be added when we need to store more

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        int scale = val.scale();
        BigInteger unscaledVal = val.unscaledValue();
        
        /* Store the scale. */
        writePackedInt(scale);
        byte[] a = unscaledVal.toByteArray();
        int len = a.length;
        
        /* Store the length of the following bytes. */
        writePackedInt(len);

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     */
    public static int getBigDecimalMaxByteLength(BigDecimal val) {


        BigInteger unscaledVal = val.unscaledValue();
        return PackedInteger.MAX_LENGTH * 2 + 
               unscaledVal.toByteArray().length;
    }
    
    /**
     * Writes a sorted {@code BigDecimal}.
     *

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        }


        if (!kekOnly) {
            // public key (just Y)
            BigInteger y = publicKey.getY();
            byte[] yBytes = y.toByteArray();
            String yHex = StringUtil.toHexString(yBytes);
            buf.append("======== Begin Public Key (Y @ ").append(yBytes.length).append(" / ").append(yHex.length()).append(") ========\n");
            buf.append(yHex).append("\n");
            buf.append("======== End Public Key ========\n\n");

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            buf.append(yHex).append("\n");
            buf.append("======== End Public Key ========\n\n");


            // private key (just X)
            BigInteger x = privateKey.getX();
            byte[] xBytes = x.toByteArray();
            String xHex = StringUtil.toHexString(xBytes);
            buf.append("======== Begin Private Key (X @ ").append(xBytes.length).append(" / ").append(xHex.length()).append(") ========\n");
            buf.append(xHex).append("\n");
            buf.append("======== End Private Key ========\n\n");

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    byte [][] result = new byte[num+2][];
    result[0] = a;


    for (int i = 1; i <= num; i++) {
      BigInteger curBI = startBI.add(intervalBI.multiply(BigInteger.valueOf(i)));
      byte [] padded = curBI.toByteArray();
      if (padded[1] == 0)
        padded = tail(padded,padded.length-2);
      else
        padded = tail(padded,padded.length-1);
      result[i] = padded;

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      if (object == null) {
        output.writeVarInt(NULL, true);
        return;
      }
      BigInteger value = (BigInteger)object;
      byte[] bytes = value.toByteArray();
      output.writeVarInt(bytes.length + 1, true);
      output.writeBytes(bytes);
    }


    public BigInteger read (Kryo kryo, Input input, Class<BigInteger> type) {

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    public void bigIntegerObjectShouldReturnBigIntegerByteBuffer() {
        ExtensibleTypeInferringSerializer.addSerializer(BigInteger.class, BigIntegerSerializer.get());


        BigInteger value = BigInteger.valueOf(0x0807060504030201L);


        byte[] array = value.toByteArray();
        ByteBuffer expectedBuffer = ByteBuffer.wrap(array);


        ByteBuffer buffer = extendedTypeInferringSerializer.toByteBuffer(value);


        assertEquals(expectedBuffer, buffer);

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