This repo is a collection of proof-of-concepts, examples, essays and experiments in cryptography, cryptanalysis, steganography, steganalysis and covert channels that I originally wrote in 2015.
Individual sub-directories have their own README.md files describing their contents in detail.
Topics covered include:
- Implementation of a covert storage channel between two isolated processes
- Linear cryptanalysis attack against a block cipher
- Correlation attack against a stream cipher
- LSB steganography using pseudorandom password-based embedding
- Steganalysis of images using Mean Square Error (MSE) and Peak Signal to Noise Ratio (PSNR) measures of image quality degradation
- Side channel attacks and countermeasures