The cryptosystems package offers a suite of classes and functions for both symmetric and asymmetric encryption, as well as hashing functionalities. Designed for seamless encryption, decryption, and cryptographic operations, this package is lightweight and efficient, relying solely on Python’s built-in libraries: ctypes, warnings and hashlib. With all cryptographic logic implemented from scratch, cryptosystems provides a streamlined, dependency-free solution, ensuring consistency and reliability across different environments as well as Python versions.

• Dependency-Free 🚫📦: Operates solely on Python's built-in modules, eliminating the need for external libraries.
• Version Stability 🔒📅: Crafted to maintain consistent functionality across Python versions.
• Optimized for Performance ⚡⚙️: Built from scratch for efficient and consistant cryptographic operations.
• Lightweight Codebase 🪶💻: Minimalistic design ensures a low overhead and straightforward integration.
• Reliability and Security 🔐🛡️: Ensures robust encryption/decryption and hashing without reliance on third-party modules.
• Comprehensive Cryptosystem Support 🔄🔑: Offers a full suite of symmetric, asymmetric, and hashing methods.

To install the package, simply clone the repository and install the dependencies:

pip install cryptosystems

The general structure for usage is to create an object of the respective cryptosystem, with the key as argument if required. Similar usage for the utility functions as well. See docs for the exact reference example of a specific cryptosystem if required.

from cryptosystems import SomeCryptosystem

cipher = SomeCryptosystem()
ciphertext = cipher.encrypt("Hello World")
print(ciphertext)  # Output: 'ciphertext string'
plaintext = cipher.decrypt(ciphertext)
print(plaintext)  # Output: 'Hello World'

This project is licensed under the Apache License - see the LICENSE file for details.

• Ishan Surana - Inception, implementation and testing - GitHub

• PyCryptodome, for the logic of functions in the functions submodule (Python-based implementation, discontinued from version v1.x onward)
• bcrypt.h and gmp.h, for functions in the functions submodule