hawkpost - Generate links that users can use to submit messages encrypted with your public key.

•    Python

Hawkpost lets you create unique links that you can share with the person that desires to send you important information but doesn't know how to deal with PGP. You can deploy your own server using the code from this repository or use the official server (that is running an exact copy of this repo) at https://hawkpost.co.

kbpgp - OpenPGP (RFC4880) Implementation in IcedCoffeeScript

•    Javascript

You can import our keys to GPG - and verify our Keybase.io admin status - with keybase track max and keybase track chris. We appreciate comments, questions, feature requests, etc.

Cryptlib - provides Encryption and Authentication Service

•    C

cryptlib is a powerful security toolkit that allows even inexperienced crypto programmers to easily add encryption and authentication services to their software. It provides support for S/MIME and PGP/OpenPGP secure enveloping, SSL/TLS and SSH secure sessions, CA services such as CMP, SCEP, RTCS, and OCSP, and other security operations such as secure timestamping.

GPG Suite - Everything you need to get started with secure communication and encrypting files in one simple package

•    C

Use GPG Suite to encrypt, decrypt, sign and verify files or messages. Manage your GPG Keychain with a few simple clicks and experience the full power of GPG easier than ever before.

YubiKey-Guide - Guide to using YubiKey as a SmartCard for GPG and SSH

This is a guide to using YubiKey as a SmartCard for storing GPG encryption and signing keys. An authentication key can also be created for SSH and used with gpg-agent.

ObjectivePGP - OpenPGP library for iOS and macOS

•    Objective-C

ObjectivePGP is an implementation of OpenPGP protocol for iOS and macOS. OpenPGP is the most widely used email encryption standard. It is defined by the OpenPGP Working Group of the Internet Engineering Task Force (IETF). Here is the blog post story.

Python-gnupg - Python API which wraps the GNU Privacy Guard

•    Python

The gnupg module allows Python programs to make use of the functionality provided by the GNU Privacy Guard (abbreviated GPG or GnuPG). Using this module, Python programs can encrypt and decrypt data, digitally sign documents and verify digital signatures, manage (generate, list and delete) encryption keys, using proven Public Key Infrastructure (PKI) encryption technology based on OpenPGP.

sjcl - Stanford Javascript Crypto Library

•    Javascript

The Stanford Javascript Crypto Library is a project by the Stanford Computer Security Lab to build a secure, powerful, fast, small, easy-to-use, cross-browser library for cryptography in Javascript. SJCL is secure. It uses the industry-standard AES algorithm at 128, 192 or 256 bits; the SHA256 hash function; the HMAC authentication code; the PBKDF2 password strengthener; and the CCM and OCB authenticated-encryption modes.

Darkwire.io - End-to-end encrypted instant web chat

•    Javascript

Simple encrypted web chat. Powered by socket.io, the web cryptography API. This project is an example of how client side encryption works and how you can integrate it as a chat service. Darkwire server is a Node.js application that requires redis. The Darkwire.io web client is written in JavaScript with React JS and Redux. It uses a combination of asymmetric encryption (RSA-OAEP), symmetric session keys (AES-CBC) and signing keys (HMAC) for security.

BouncyCastle - Lightweight Cryptography API for Java and CSharp

•    Java

Bouncy Castle Crypto APIs is a lightweight cryptography API for Java and CSharp. It has provider for the Java Cryptography Extension and the Java Cryptography Architecture. It supports TLS, PKCS7, PKCS12, OpenPGP, S/MIME, OCSP, TSP, CMP, Extended Access Control, ASN and lot more.

end-to-end - End-To-End is a crypto library to encrypt, decrypt, digital sign, and verify signed messages (implementing OpenPGP and OTR)

•    Javascript

End-To-End is a crypto library to encrypt, decrypt, digital sign, and verify signed messages (implementing OpenPGP and OTR).This is the source code for the End-To-End library. It's built upon a newly developed, JavaScript-based crypto library. End-To-End implements the OpenPGP standard, IETF RFC 4880, enabling key generation, encryption, decryption, digital signature, and signature verification.

Themis - Crypto library for storage and messaging for ObjC, Android, C++, JS, Python, Ruby and PHP

•    C

Themis is open-source high-level cryptographic services library for mobile and server platforms, providing secure messaging and secure data storage. Themis provides three important cryptographic services Secure messaging, Secure session and Secure storage.

python-rsa - Python-RSA is a pure-Python RSA implementation.

•    Python

Python-RSA is a pure-Python RSA implementation. It supports encryption and decryption, signing and verifying signatures, and key generation according to PKCS#1 version 1.5. It can be used as a Python library as well as on the commandline. The code was mostly written by Sybren A. Stüvel. Documentation can be found at the Python-RSA homepage. For all changes, check the changelog.

keygrip - Key signing and verification for rotated credentials

•    Javascript

Keygrip is a node.js module for signing and verifying data (such as cookies or URLs) through a rotating credential system, in which new server keys can be added and old ones removed regularly, without invalidating client credentials.

Botan - Crypto library for C++

•    C++

Botan (Japanese for peony) is a cryptography library written in C++11. Botan's goal is to be the best option for cryptography in new C++ code by offering the tools necessary to implement a range of practical systems, such as TLS/DTLS, PKIX certificate handling, PKCS#11 and TPM hardware support, password hashing, and post quantum crypto schemes. In addition to the C++, botan has a C89 API specifically designed to be easy to call from other languages. A Python binding using ctypes is included, and several other language bindings are available.

SecurityDriven.Inferno - :white_check_mark: .NET crypto done right. Professionally audited.

•    CSharp

.NET crypto done right.

trezor-agent - Hardware-based SSH/PGP agent

•    Python

This project allows you to use various hardware security devices to operate GPG and SSH. Instead of keeping your key on your computer and decrypting it with a passphrase when you want to use it, the key is generated and stored on the device and never reaches your computer. Read more about the design here. You can do things like sign your emails, git commits, and software packages, manage your passwords (with pass and gopass, among others), authenticate web tunnels and file transfers, and more.

PolarSSL library - Crypto and SSL made easy

•    C

Download PolarSSL PolarSSL is an SSL library written in ANSI C. PolarSSL makes it easy for developers to include cryptographic and SSL/TLS capabilities in their (embedded) products with as little hassle as possible. It is designed to be readable, documented, tested, loosely coupled and portable. It supports Symmetric encryption algorithms, hash algorithms, RSA with PKCS and X.509 certificate, SSL and TLS.

Charm-crypto - A Python-based rapid prototyping framework for cryptosystems

•    Python

Charm is a framework for rapidly prototyping advanced cryptosystems. Based on the Python language, it was designed from the ground up to minimize development time and code complexity while promoting the reuse of components. It supports Base crypto library, including symmetric encryption schemes, hash functions, PRNGs, digital signature, encryption and lot more.

.NET Crypto Exentsion for RSA Signatures using SHA-2 Encryption

In this project you can find a library (Microsoft.Cryptography), which is using an extension mechanism of the .Net Framework & WCF to provide support for RSA-signatures with SHA-2 (SHA-256, SHA-384, SHA-512) encryption. This library also provides components for X.509-Certifi...