Method clock

src/main/java/com/thealgorithms/ciphers/a5/LFSR.java:26–33

(BitSet key, int keyLength)

    }

    private void clock(BitSet key, int keyLength) {
        // We start from reverse because LFSR 0 index is the left most bit
        // while key 0 index is right most bit, so we reverse it
        for (int i = keyLength - 1; i >= 0; --i) {
            var newBit = key.get(i) ^ xorTappingBits();
            pushBit(newBit);
        }
    }

    @Override
    public boolean clock() {