1361 Open source projects that are alternatives of or similar to Openssl

en-crypt, de-crypt, si-gn, ve-rify - smime, pdf, xades and plain files in pure python

Secure storage for personal records built to comply with GDPR

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

Header only c++ network library, based on asio,support tcp,udp,http,websocket,rpc,ssl,icmp,serial_port.

Open source Android, iOS and Web app for learning about and managing digital and physical security. From how to send a secure message to dealing with a kidnap. Umbrella has best practice guides in over 40 topics in multiple languages. Used daily by people working in high risk countries - journalists, activists, diplomats, business travelers etc.

Icinga is a monitoring system which checks the availability of your network resources, notifies users of outages, and generates performance data for reporting.

Push button, get TLS

Postfix filter/hook to automatically encrypt outgoing emails with PGP/GPG

High performance and distributed KV store w/ REST API. 🦀

Generate and/or deploy SSL certificate

HTTPS server running on localhost

A Stable & Secure Tunnel based on KCP with N:M multiplexing and FEC. Available for ARM, MIPS, 386 and AMD64。KCPプロトコルに基づく安全なトンネル。KCP 프로토콜을 기반으로 하는 보안 터널입니다。

A socialist network: encrypted, insurveillable, unmontizeable, and self-governing. App is written in Python. (Calling all socialist programmers for help!)

EasyCert quickly generates web server TLS certificates that have been self-signed by a private certificate authority that it also creates.

Fast and secure tunnels over HTTP/2

Usable, easy and safe pure-Rust crypto

A ncurses animation to make decryption look like, well, decryption.

Brook is a cross-platform strong encryption and not detectable proxy. Zero-Configuration. Brook 是一个跨平台的强加密无特征的代理软件. 零配置.

Shellscript to compile git with OpenSSL

Something could be public patches

Managed .NET wrapper for unmanaged PKCS#11 libraries

Easy SSL pinning validation and reporting for iOS, macOS, tvOS and watchOS.

☁️ Modern & minimalistic load balancer for the Сloud era

A fast, secure, lightweight and cross-platform HTTP proxy written in C++.

A self-contained cryptographic library for Python

Λ ⚬ λ: Functional Lattice Cryptography

A simple and visual static web server with collaboration features.

Zero-knowledge virtual machine written in Rust

Yet Another Dotfiles Manager

Solidity crypto libraries, ring signatures, proof of knowledge, packed signatures etc. with matching Python implementations for secp256k1 and (alt)BN-256

Secure and simple terminal sharing

🔐Azure Key Vault KMS plugin for Kubernetes

PHP library to generate BTC addresses and signatures from private keys.

A simple decentralized peer-to-peer ledger implementation

Project Wycheproof tests crypto libraries against known attacks.

MQTTnet is a high performance .NET library for MQTT based communication. It provides a MQTT client and a MQTT server (broker). The implementation is based on the documentation from http://mqtt.org/.

🌞 Stellar wallet. Secure and user-friendly.

Generate self-signed x.509 certificates for use with SSL/TLS

Send encrypted PGP messages with one click

Collect libraries and packages about blockchain/cryptography in Rust

A Beautiful Gemini Client

📦 • Send a file p2p and e2e encrypted in your browser using WebRTC.

JSON Web Token implementation in Rust.

🔥 Proxy is a high performance HTTP(S) proxies, SOCKS5 proxies,WEBSOCKET, TCP, UDP proxy server implemented by golang. Now, it supports chain-style proxies,nat forwarding in different lan,TCP/UDP port forwarding, SSH forwarding.Proxy是golang实现的高性能http,https,websocket,tcp,socks5代理服务器,支持内网穿透,链式代理,通讯加密,智能HTTP,SOCKS5代理,黑白名单,限速,限流量,限连接数,跨平台,KCP支持,认证API。

Rapidly SSLify Your Server!

A .NET protector supporting .NET Core forked from the discontinued ConfuserEx

A collection of secure encryption examples for encrypting strings and binary data.

🔥 比libevent、libuv更易用的国产网络库。A c/c++ network library for developing TCP/UDP/SSL/HTTP/WebSocket client/server.

Rust implementation of multi-party Schnorr signatures over elliptic curves.

OpenTimestamps client

A really tiny crypto library.

List of resources about foundational knowledge for programmers (supposed to last a few decades)

A framework for the JOSE standards JWS, JWE, and JWK written in Swift.

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.

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

Exploit Development, Reverse Engineering & Cryptography

BitTorrent library and client with DHT, magnet links, encryption and more

AES encryption working between Objective-C and Java.

SHA3 for JavaScript - The Keccak family of hash algorithms

Stream encryption & decryption with libsodium and protobuf