Encryption Library

This project is a C++ library that contains a set of classes that implement, using openssl under the hood, the following cryptographic functions :

• AES 256 GCM :
  • Key generation, encryption and decryption
• RSA :
  • Key generation, encryption, decryption, message digest (with SHA256) sing and verify
• SHA256 :
  • Hashing of arbitrary strings
• UTILITIES :
  • String padding
  • Random string generation
  • Read/write/delete files
  • Base 64 encoding of std::vector<unsigned char>
  • Base 64 decoding of strings

Developement environment

This project was developed on Ubuntu 20.04.6 LTS

Dependencies

cmake :

$ sudo apt install cmake

openssl :

$ sudo apt install libssl-dev

doxygen :

$ sudo apt install doxygen

graphviz :

$ sudo apt install graphviz

Compilation instrunctions

Download the repository

$ git clone https://github.com/andresOchoaHernandez/EncryptedCommunication

Enter the repo, create a build folder and compile :

$ cd EncryptedCommunication
$ mkdir build
$ cd build

# Configure CMake
$ cmake ..

# Build
$ make

# Run all the tests
$ make test

Some tests are very long, so if you want to run a specific test do :

# List all available tests
$ ctest -N

# Execute one test
$ ctest -R <test_name>