Editing Pike (cipher) (section)

== Inner workings ==

Pike consists of three [[lagged Fibonacci generator]]s with relations
<math display="block"> \begin{align}
a_i = a_{i-55} + a_{i-24} \ (mod \ 2^{32}) \\[]
b_i = b_{i-57} + b_{i-7} \ (mod \ 2^{32}) \\[]
c_i = c_{i-58} + c_{i-19} \ (mod \ 2^{32})
\end{align}
</math>

The clock control is based on the carry bits.
If all carry bits agree we step all three LFG's, otherwise we step the two who do agree.

This control will be delayed 8 cycles.
The final output is the XOR of the least significant words of all three generators.