Top 822 cryptography open source projects

Bitcoin Core integration/staging tree

TLS/SSL and crypto library

free C++ class library of cryptographic schemes

Collect libraries and packages about blockchain/cryptography in Rust

A lightweight, secure, easy-to-use crypto library suitable for constrained environments.

SQLite3 encryption that sucks less

HElib is an open-source software library that implements homomorphic encryption. It supports the BGV scheme with bootstrapping and the Approximate Number CKKS scheme. HElib also includes optimizations for efficient homomorphic evaluation, focusing on effective use of ciphertext packing techniques and on the Gentry-Halevi-Smart optimizations.

The BIP39 library for Go.

PASETO: Platform-Agnostic Security Tokens

JSON Object Signing and Encryption (JOSE) for Erlang and Elixir

A curated list of awesome projects and resources related to the Substrate blockchain development framework.

✨ Awesome - A curated list of amazing Homomorphic Encryption libraries, software and resources

Usable, easy and safe pure-Rust crypto

JSON Web Token implementation in Rust.

A shared preference implementation for confidential data in Android. Per default uses AES-GCM, BCrypt and HKDF as cryptographic primitives. Uses the concept of device fingerprinting combined with optional user provided passwords and strong password hashes.

A modern TLS library in Rust

Python ASN.1 library with a focus on performance and a pythonic API

Whitebox AES implementation in C++. Chow, Karroumi.

A modern and easy-to-use cryptographic library for .NET Core based on libsodium

An RPKI Validator written in Rust

The RPKI-to-Router server used at Cloudflare

Private messaging system that hides metadata

Step-by-step guide on how to create a GPG key on keybase.io, adding it to a local GPG setup and using it with Git and GitHub.

Easy file sharing with server-side encryption, curl/httpie/wget compliant

👯 Discohash - A super fast and simple hash. 5GB/s serial (depending on hardware). Also in NodeJS

Modern cryptography for PostgreSQL using libsodium.

Java binding to the Networking and Cryptography (NaCl) library with the awesomeness of libsodium

🔒 A set of high-level APIs over PointyCastle for two-way cryptography.

Project Wycheproof tests crypto libraries against known attacks.

OpenTimestamps client

🐩 Poodle (Padding Oracle On Downgraded Legacy Encryption) attack CVE-2014-3566 🐩

Merkleized IAVL+ Tree implementation in Go

❄️ Firmware and simulator for Coldcard Hardware Wallet

A library for doing homomorphic encryption operations on tensors

Golang interface to manage Yubikeys, including a crypto.Signer & crypto.Decrypter interface

Decode All Bases - Base Scheme Decoder

Protecting cryptographic signing keys and seed secrets with Multi-Party Computation.

👤 Identity and Access Management Knowledge for Cloud Platforms

Useful CTF Tools

Safe, fast, small crypto using Rust

Zcash Improvement Proposals

Curated list of open-source Java Card applets and related applications for cryptographic smartcards

Client-side password-protection for HTML

An open source cybersecurity protocol for syncing decentralized graph data.

Software U2F authenticator for macOS

Library for securely hashing passwords

Hardware-based attestation / intrusion detection app for Android devices. It provides both local verification with another Android device via QR codes and optional scheduled server-based verification with support for alert emails. It uses hardware-backed keys and attestation support as the foundation and chains trust to the app for software checks.

RSA attack tool (mainly for ctf) - retreive private key from weak public key and/or uncipher data

Clean, portable, tested implementations of post-quantum cryptography

Java web and command line applications demonstrating various security topics

Microsoft SEAL is an easy-to-use and powerful homomorphic encryption library.

Secure USB DFU1.1 bootloader for STM32

Library for the Shamir secret sharing scheme

X25519 elliptic curve Diffie-Hellman key exchange in pure-Rust, using curve25519-dalek.

Encrypted, taggable, searchable cloud storage

Hide secrets with invisible characters in plain text securely using passwords 🧙🏻‍♂️⭐

Personal web site of Jameson Lopp

MagicPad is an encryption suite for beginners. It is designed to be run standalone via the browser or executable (Electron).

A JavaScript/TypeScript implementation of the complete Secure Hash Standard (SHA) family (SHA-1, SHA-224/256/384/512, SHA3-224/256/384/512, SHAKE128/256, cSHAKE128/256, and KMAC128/256) with HMAC.

Swift cross-platform crypto library using CommonCrypto/libcrypto