Implementacion cliente servidor de un sistema de mensajeria utilizando OpenSSL

curl with openpgp cert support (RFC6091)

a purly Peer-to-Peer instant messenger client

C based smolcert implementation targeted towards the esp-idf

Windows Certificate Store Aggregator

A lightweight library that interfaces PKCS#11 libraries, with the added functionality of supporting CAdES-BES signing natively

Virgil Core SDK allows developers to get up and running with Virgil Cards Service API quickly and add end-to-end security to their new or existing digital solutions to become HIPAA and GDPR compliant and more.

openssl_ca with QT GUI

My Master's Degree thesis project for Politecnico di Torino, Computer Engineering (Cybersecurity) 2022

A set of example programs that demonstrate various OpenSSL functions and enable "learning by doing".

WebCert is a Web application to generate and manage digital certificates in cases where no "full" CA is needed.

这是一个PuTTY-CAC中文版，与PuTTY-CAC相同，是一个支持智能卡、证书和FIDO密钥的Windows Secure Shell客户端。更多详细信息，请访问PuTTY-CAC相关网站及说明。

Microchip AVR based smartcard/token with ECC and RSA cryptography

RFC 3161 Time-Stamp Protocol Server.

Easy-to-use high-level library for PKI-enabled applications

Heimdal

铜锁/Tongsuo is a Modern Cryptographic Primitives and Protocols Library

An OpenSSL-based implementation of the Certificate Management Protocol (CMP), defined in IETF RFCs 4210, 4211, and 6712. It is being extended according to the emerging RFCs 'CMP Updates' (CMPv3), 'CMP Algorithms', and 'Lightweight CMP Profile'.