Image Encryption Using the Chaotic Josephus Matrix

Algorithm 2

Reshape a CJPS into a CJPM.

Input: 𝑐𝑞_𝜋, a CJPS at length 𝑡=𝑅×𝐶

Output: 𝑀, a CJPM of size 𝑅-by-𝐶

for 𝑖= 1: 𝑅

   for𝑗= 1: 𝐶

     𝑀𝑖,𝑗=𝑐𝑞_𝜋(𝑖−1)𝑅+𝑗;

   end

end