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Small C++ cryptographic library based onQt andOpenSSL.

This library also working withAndroid.

This library requires no special dependencies except ofQt with theOpenSSL (version 1.1.1 or later).

AES-128, AES-192, AES-256

• Electronic codebook (ECB)
• Cipher block chaining (CBC)
• Cipher feedback (CFB)
• Output Feedback (OFB)
• Counter Mode (CTR)
• Galois/Counter Mode (GCM)
• Counter with Cipher Block Chaining-Message Authentication Code (CCM)

• RSA (Rivest–Shamir–Adleman)

• X509

Before building lib, you have to addOpenSSL lib to root folder or change path in.pro file.

cd <projectDirecoty>qmake QSimpleCrypto.pro make

To get started, you need to addOpenSSL library to your project.

You can downloadOpenSSL on:

• Qt Maintenance Tool (downloaded files will be inQt/Tools/ folder)
• OpenSSL site.

After building library and linkingOpenSSL, you need to linkQSimpleCrypto to your project.

Example:

#include<QDebug>#include<QByteArray>#include"QAEAD.h"intmain() {    QByteArray key ="AABBCCEEFFGGHHKKLLMMNNOOPPRRSSTT";    QByteArray iv ="AABBCCEEFFGGHHKKLLMMNNOOPPRRSSTT";    QByteArray aad ="AABBCCDDEEFF";    QByteArray tag ="AABBCCDDEEFF";    QSimpleCrypto::QAead aead;    QByteArray encrypted = aead.encryptAesGcm("Hello World", key, iv, &tag, aad);    QByteArray decrypted = aead.decryptAesGcm(bytes, key, iv, &tag, aad);    }

Note: encryption and decryption functions returns value in hex dimension. So, if you want to display encrypted or decrypted value you shouldconvert ordeconvert received value.

More information you can find onwiki.