junaidrahim / DES

Cryptography Project - Implementation of DES Algorithm

DES Algorithm

Implementation of DES algorithm in C++.

What is DES Algorithm?

Data Encryption Standard (DES) is a block cipher algorithm that takes plain text in blocks of 64 bits and converts them to ciphertext using keys of 48 bits. It is a symmetric key algorithm, which means that the same key is used for encrypting and decrypting ​data. Encryption and decryption using the DES algorithm.

Table of Contents

• DES Algorithm
  • Table of Contents
  • Installation
  • Usage
  • Group Details

Installation

1. Clone this repository

git clone https://github.com/junaidrahim/DES.git
cd DES
git checkout main

2. Building the binaries

mkdir build
cd build
cmake ..
make

This will build the DES binary in build directory.

Usage

$ ./DES --help
-v, --version        Display program version info and exit.
-f, --file TEXT      Takes a file as an input.
-o, --output TEXT    Writes the output to the specified file.
-e, --encrypt-mode   Runs in encrypt mode.
-d, --decrypt-mode   Runs in decrypt mode.
--help, -h           show help

Encrypt Text

./DES -f=../input.txt -o=./output.txt -e

Decrypt Text

./DES -f=./output.txt -o=./decrypted.txt -d

Group Details

1905642 - Sounak Mukherjee
1905658 - Aditya Meharia
1905667 - Sagnik Chaudhuri
1905674 - Debmalya Chatterjee
1905725 - Ujjwal Singh Shekhawat
1905726 - Rohan Kumar
1905828 - Pratyush Khuntia
1905831 - Junaid Rahim

Submitted to Prof. Chittaranjan Pradhan