private int decryptBlock( byte[] in, int inOff, byte[] out, int outOff) { long A = bytesToWord(in, inOff); long B = bytesToWord(in, inOff + bytesPerWord); for (int i = _noRounds; i >= 1; i--) { B = rotateRight(B - _S[2*i+1], A) ^ A; A = rotateRight(A - _S[2*i], B) ^ B; } wordToBytes(A - _S[0], out, outOff); wordToBytes(B - _S[1], out, outOff + bytesPerWord); return 2 * bytesPerWord; }
private int decryptBlock( byte[] in, int inOff, byte[] out, int outOff) { long A = bytesToWord(in, inOff); long B = bytesToWord(in, inOff + bytesPerWord); for (int i = _noRounds; i >= 1; i--) { B = rotateRight(B - _S[2*i+1], A) ^ A; A = rotateRight(A - _S[2*i], B) ^ B; } wordToBytes(A - _S[0], out, outOff); wordToBytes(B - _S[1], out, outOff + bytesPerWord); return 2 * bytesPerWord; }