Scripts that illustrate basic cryptography concepts based on Coursera Standford Cryptography I course and more.

Classical ciphers: Caesar, ADFGX, ROT13 and etc.

A crossplatform Secret sharing Tool using python3 . Can be used as offline Password Backup System.

Python library of efficient and numerically-precise randomness extractors

Common cryptographic algorithms written in Python

We implement Delegatable Anonymous Credentials using Mercurial Signatures

Oblivious transfer (OT) communications protocol message/response functionality implementations based on Curve25519 and the Ristretto group.

Oblivious pseudo-random function (OPRF) protocol functionality implementations based on Curve25519 primitives, including both pure-Python and libsodium-based variants.

Python Library for Elliptic Curve Cryptography: key exchanges (Diffie-Hellman, Massey-Omura), ECDSA signatures, and Koblitz encoding. Suitable for crypto education and secure systems.

Easy-to-deploy oblivious pseudo-random function (OPRF) service that allows other parties (typically participants in some secure multi-party computation protocol) to obtain a persistent mask which they cannot decrypt but which they can safely apply (via requests to the service) to private data values of their choice.

A basic cryptography library written in pure python, possible to use in CTF's

ParallelCryptography harnesses high-performance computing to optimize cryptographic algorithms. Explore our subprojects for parallel encryption, decryption, hashing, and more. Secure your data efficiently with the power of parallel computing.

Python implementation of format preserving encryption defined as a NIST draft (FF1, FF3-1)

The Diffie-Hellman algorithm is being used to establish a shared secret that can be used for secret communications while exchanging data over a public network using the elliptic curve to generate points and get the secret key using the parameters.

Implementation and exploration of RSA encryption, including its security properties, practical applications, and real-world use cases. A class project to learn and experiment with cryptographic principles

Here, I have made a very easy to use steganography tool. It allows for parties to communicate(bi-directionally) openly/publicly in "plain sight" but would only appear as the transferring of digital photos at fist glance. But, "hidden data" is actually embedded within the images. This tool allows for both extracting data from digital images as we…

Python code for different cryptographic algorithms

Pure python3 implementation of cryptograhic alogrithms

A Streamlit-based interactive app that generates large primes, compares primality algorithms, and demonstrates real-world RSA encryption and decryption using those primes.

Repository related to CENG471 course I have taken in IZTECH