Practical Cryptography for Developers: Hashes, MAC, Key Derivation, DHKE, Symmetric and Asymmetric Ciphers, Public Key Cryptosystems, RSA, Elliptic Curves, ECC, secp256k1, ECDH, ECIES, Digital Signatures, ECDSA, EdDSA

📡 An AX.25 packet radio chat protocol with support for digital signatures and binary compression. Like IRC over radio waves.

Constantine: modular, high-performance, zero-dependency cryptography stack for verifiable computation, proof systems and blockchain protocols.

Fight fake news with cryptography & human nature

Small portable Elliptic-Curve Diffie-Hellman in C

Encrypted Chat. No History. No Logs.

Rust bindings for liboqs

OPTIGA™ Trust M Host Library for C

safer.chat is a web application that allows you to have groupal chats using end-to-end encryption, no addons, or applications needs to be installed

A tool that recovers the public key used to sign JWT tokens

Elliptic Curve Cryptography and Common Public Key Cryptography Implementations

A cryptographic library

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

👻 Post-quantum cryptography for Python.

A Lightweight Partially Homomorphic Encryption Library for Python

Scramb.py is a region based JPEG Image Scrambler and Descrambler written in Python for End-to-End-Encrypted (E2EE) Image distribution through unaware channels.

is a package which gives you a possibility to run every OpenSSL command 🔒 in Node.js in a handy way. Moreover, parameters like -in, -keyin, -config and etc can be replaced by a raw data (Buffor).

A simple lib and tool to encrypt, decrypt data with Public-key cryptography.

A secure platform for storing of files using Hybrid Cryptography

DID is an Identity Provider, that authenticates users by verifying access to either an email address or securely stored private key.