"Keep It Simple, Secure" a small interface for key exchange and symmetric ciphering. Made for multi-backend.

Table of Contents

• Security Considerations
• Features
• Usage Example
• Architecture
• Interfaces & Extensibility
• Contributing

Security Considerations

Use this library with caution, as overall security depends not only on the backend implementation but also on how you exchange and protect cryptographic keys.

Features

Here is the list of available backend implementations :

• LibSodium

Usage example

You can see usage example in the main.cpp for the LibSodium implementation.

Architecture

Here is a class diagram of the two interfaces of this project :

Interfaces & Extensibility

There is two interfaces KeyExchangeInterface and SymmetricCipherInterface.
You can use these in you program and choose one of the implementation.

Example with the LibSodium implementation

unique_ptr<KeyExchangeInterface> kX = make_unique<KeyExchangeSodium>();
unique_ptr<SymmetricCipherInterface> symCipher = make_unique<SymmetricCipherSodium>(kX->getSharedSecret());

This let you the opportunity to change the backend later.

Contributing

Contributions are welcome.
Feel free to improve this project by implementing a new backend, updating the existing one, or adding new interfaces if you find them useful.