hazem-ali / des-generator

This is the implementation of Data Encryption Standard (DES) in C++

DES-Encryptor-Decryptor

This code converts a 64-bit data into a DES cipher using a 64-bit key. Result cipher can be decrypted using the same code, you need only to add the option "decrypt" instead of "encrypt"

Also it calculates number of CPU Cycles taken to encipher this data

Usage

./DES.exe encrypt data key

Example:

.\DES.exe encrypt 7A6C731D22347676 1323445A6D788381

output:

  cipher: 7DB033DD14D6F975

  Cycles: 11130

.\DES.exe decrypt 7DB033DD14D6F975 1323445A6D788381

output:

  plain: 7A6C731D22347676

  Cycles: 9630