Rectangle-lightweight-block-cipher

Description

The RECTANGLE block cipher is a type of lightweight block ciphers that adopts the SP-network structure (substitution permutation network structure). Where the S-layer (substitution) consists of 16 (4*4) S-boxes in parallel. And the P-layer (permutation) is composed of 3 rotations. The RECTANGLE cipher is an iterated block cipher which is of 64 bits length and (80 or 128) bits key length that pass by three main processes which are: (Representing the cipher state and the subkey state, the round transformation and the key schedule).

How to run the code

1. Install nodeJs runtime
2. Open the terminal in the directory where you downloaded rectangle.js
3. type the command node rectangle