Example usage for java.util BitSet valueOf

Introduction

In this page you can find the example usage for java.util BitSet valueOf.

Prototype

public static BitSet valueOf(ByteBuffer bb)

Source Link

Document

Returns a new bit set containing all the bits in the given byte buffer between its position and limit.

Usage

From source file:uk.co.infinityapps.rehpic.cipherblockmode.CipherBlockChainingMode.java

private byte[] xorCipherAndPlainText(byte[] cipherText, byte[] plainText) {
    final BitSet cipherTextBitSet = BitSet.valueOf(cipherText);
    final BitSet plainTextBitSet = BitSet.valueOf(plainText);
    cipherTextBitSet.xor(plainTextBitSet);
    return BitUtils.bitSetToByteArray(cipherTextBitSet, cipherText.length);
}

From source file:uk.co.infinityapps.rehpic.round.RoundFunctionImpl.java

public byte[] encrypt(byte[] blockData, final byte[][] subKeys) {
    for (byte[] subKey : subKeys) {
        blockData = mixingPermutator.mix(blockData);
        blockData = permutator.shiftLeft(blockData, subKey);
        final BitSet blockBitSet = BitSet.valueOf(blockData);
        blockBitSet.xor(BitSet.valueOf(subKey));
        blockData = substitutionBox.subtitute(BitUtils.bitSetToByteArray(blockBitSet, blockData.length),
                subKey);//from   w w  w.  j a v  a2s .  c  om
    }
    return blockData;
}

From source file:uk.co.infinityapps.rehpic.round.RoundFunctionImpl.java

public byte[] decrypt(byte[] blockData, final byte[][] subKeys) {
    final byte[][] reversedSubKeys = reverseSubKeysForDecryption(subKeys);

    for (byte[] subKey : reversedSubKeys) {
        blockData = substitutionBox.subtitute(blockData, subKey);
        BitSet xorBlockBitSet = BitSet.valueOf(blockData);
        xorBlockBitSet.xor(BitSet.valueOf(subKey));
        blockData = permutator.shiftRight(BitUtils.bitSetToByteArray(xorBlockBitSet, blockData.length), subKey);
        blockData = mixingPermutator.unmix(blockData);
    }//from   w w w.j  a  v a2  s.  c  om
    return blockData;
}