This repo is a collection of proof-of-concepts, examples, essays and experiments in cryptography, cryptanalysis, steganography and covert channels that I originally wrote in 2015.

The application provides various cryptographic metrics, such as Nonlinearity, Strict Avalanche Criterion (SAC), Bit Independence Criterion (BIC-NL & BIC-SAC), Linear Approximation Probability (LAP), and Differential Approximation Probability (DAP).

Encryption/decryption scripts for a Computer Security course, implementing LFSR, Affine Cipher, Caesar Cipher, Feistel Cipher, Playfair Cipher, and S-Box in Python.