Certbot is EFF's tool to obtain certs from Let's Encrypt and (optionally) auto-enable HTTPS on your server. It can also act as a client for any other CA that uses the ACME protocol.

Easy to use cryptographic framework for data protection: secure messaging with forward secrecy and secure data storage. Has unified APIs across 14 platforms.

An automated, modular cryptanalysis tool; i.e., a Weapon of Math Destruction

A library for doing homomorphic encryption operations on tensors

A library for Partially Homomorphic Encryption in Python

A framework for Backdoor development!

A Python implementation of the Wiener attack on RSA public-key encryption scheme.

NuCypher fully homomorphic encryption (NuFHE) library implemented in Python

Python tool and library for decrypting MS Office files with passwords or other keys

PYthon For Homomorphic Encryption Libraries, perform encrypted computations such as sum, mult, scalar product or matrix multiplication in Python, with NumPy compatibility. Uses SEAL/PALISADE as backends, implemented using Cython.

7zip in python3 with ZStandard, PPMd, LZMA2, LZMA1, Delta, BCJ, BZip2, and Deflate compressions, and AES encryption.

NXcrypt - 'python backdoor' framework

Ransom0 is a open source ransomware made with Python, designed to find and encrypt user data.

Paaster is a secure and user-friendly pastebin application that prioritizes privacy and simplicity. With end-to-end encryption and paste history, Paaster ensures that your pasted code remains confidential and accessible.

Python library for the https://mega.nz/ API.

Crypter in Python 3 with advanced functionality, Bypass VM, Encrypt Source with AES & Base64 Encoding | Evil Code is executed by bruteforcing the decryption key, and then executing the decrypted evil code

Simple, secure encryption and decryption for Python 2.7 and 3

Python Webpush Data encryption library

Microsoft SEAL 4.X For Python

An easy, fast lib to correctly password-protect your data