/aes-encryption-decryption

Encrypt and decrypt file using aes 256 cbc in c++

Primary LanguageC++MIT LicenseMIT

AES-256 CBC Encryption and Decryption

This repository contains a C++ implementation of AES-256 CBC encryption and decryption using the OpenSSL library. The program provides a command-line interface for easy usage and supports input from file and output to file.

Features

  • AES-256 CBC encryption

  • AES-256 CBC decryption

  • Input from file

  • Output to file

  • Command-line interface for easy usage

Prerequisites

To build and run this project, you need to have the following:

  • C++ compiler

  • OpenSSL library (version 1.1.0 or higher)

Installation

  1. Clone the repository:
git clone https://github.com/halloweeks/aes-encryption-decryption.git
  1. Build the project using your preferred C++ compiler. Make sure to link against the OpenSSL library.
cd aes-encryption-decryption

g++ main.cpp -lssl -lcrypto -o aes

Usage

The program accepts the following command-line arguments:

./aes input.file output.file -d or -e

  • input.file: Path to the input file to be encrypted or decrypted.

  • output.file: Path to the output file where the result will be written.

  • -d or -e: Specify -d for decryption or -e for encryption.

Example:

./aes plaintext.txt ciphertext.bin -e

The above command will encrypt the plaintext.txt file using AES-256 CBC and write the resulting ciphertext to ciphertext.bin.

License

This project is licensed under the MIT License. See the LICENSE file for details.

Acknowledgements

  • The implementation is based on the OpenSSL library.

  • The AES-256 CBC encryption and decryption algorithms are used.