EasySSL - Simple OpenSSL wrapper for C++ Qt projects

EasySSL is a Qt wrapper of the OpenSSL 3.0+ library that makes working with the asymmetric cryptography simple: RSA and ECDSA encryption and signing, key generation, self-signed X509 certificates and asynchronous authentication.

Read the Documentation Get it on GitHub

API Reference

Complete reference of the EasySSL classes (RSASSL, ECDSASSL, X509, AuthECDSA, ...), generated automatically with Doxygen.

Open API Reference →

Features

RSA: encryption, decryption and signing
ECDSA: signing and checking the sign
Self-signed X509 certificates
Async authentication based on the asymmetric keys
Works with Qt 5 and Qt 6, CMake and qmake

Build Options

EASYSSL_STATIC_SSL - link the static OpenSSL libraries into the EasySSL binary
BUILD_WITH_OPENSSL - build the OpenSSL 3.0+ library together with EasySSL (no system OpenSSL needed)
EASYSSL_TESTS - enable or disable the unit tests

Repository

Quick example

Create the RSA keys, encrypt and decrypt the data and check the signature:

#include <easyssl/rsassl.h>
#include <QByteArray>

int main() {
    // create a public and private keys array.
    EasySSL::RSASSL crypto;
    QByteArray pub, priv;
    crypto.makeKeys(pub, priv);

    QByteArray message = "Hello EasySSL!";

    auto signature = crypto.signMessage(message, priv);
    crypto.checkSign(message, signature, pub);

    auto encryptedMsg = crypto.encrypt(message, pub);
    auto decryptedMsg = crypto.decrypt(encryptedMsg, priv);
}

Build with CMake

Add the repository as a submodule and include it in your CMakeLists.txt. To build without the system OpenSSL library, set the BUILD_WITH_OPENSSL option:

# add the repository of EasySSL into your repo like submodule
git submodule add https://github.com/QuasarApp/easyssl.git
git submodule update --init --recursive

# CMakeLists.txt
add_subdirectory(easyssl)
target_link_libraries(yourLib PUBLIC easyssl)

# build without the system OpenSSL 3.0+ library
cmake .. -DBUILD_WITH_OPENSSL=1