openssl / openssl

General purpose TLS and crypto library

jedisct1 / libsodium

A modern, portable, easy to use crypto library.

Mbed-TLS / mbedtls

An open source, portable, easy to use, readable and flexible TLS library, and reference implementation of the PSA Cryptography API. Releases are on a varying cadence, typically around 3 - 6 months between releases.

cjdelisle / cjdns

An encrypted IPv6 network using public-key cryptography for address allocation and a distributed hash table for routing.

aws / s2n-tls

An implementation of the TLS/SSL protocols

openssh / openssh-portable

Portable OpenSSH

open-quantum-safe / liboqs

C library for prototyping and experimenting with quantum-resistant cryptography

wolfSSL / wolfssl

The wolfSSL library is a small, fast, portable implementation of TLS/SSL for embedded devices to the cloud. wolfSSL supports up to TLS 1.3 and DTLS 1.3! Update to wolfSSL 5.9.1 for the latest CVE fixes.

jedisct1 / minisign

A dead simple tool to sign files and verify digital signatures.

trezor / trezor-firmware

:lock: Trezor Firmware Monorepo

polhenarejos / pico-fido

FIDO Passkey for Raspberry Pico and ESP32

Tongsuo-Project / Tongsuo

铜锁/Tongsuo is a Modern Cryptographic Primitives and Protocols Library

libressl / portable

LibreSSL Portable itself. This includes the build scaffold and compatibility layer that builds portable LibreSSL from the OpenBSD source code. Pull requests or patches sent to tech@openbsd.org are welcome.

pyca / pynacl

Python binding to the Networking and Cryptography (NaCl) library

jedisct1 / libhydrogen

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

polhenarejos / pico-hsm

Hardware Security Module (HSM) for Raspberry Pico and ESP32

NoMoreFood / putty-cac

Windows SSH client with smart card, certificate, and FIDO authentication, including YubiKey and passkey support, plus tabbed terminal sessions.

wolfSSL / wolfBoot

wolfBoot is a portable, OS-agnostic, secure bootloader for microcontrollers, supporting firmware authentication and firmware update mechanisms.

open-quantum-safe / oqs-provider

OpenSSL 3+ provider containing post-quantum algorithms

wolfSSL / wolfssh

wolfSSH is a small, fast, portable SSH implementation, including support for SCP and SFTP.

anthropics / cryptography-research-demo

—