https://github.com/onyazuka/desu

DES encryption + Triple DES + Multithread version
https://github.com/onyazuka/desu

cpp cryptography des fast

Last synced: 5 months ago
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DES encryption + Triple DES + Multithread version

• Host: GitHub
• URL: https://github.com/onyazuka/desu
• Owner: onyazuka
• Created: 2018-09-26T20:23:36.000Z (about 7 years ago)
• Default Branch: master
• Last Pushed: 2018-09-27T08:03:39.000Z (about 7 years ago)
• Last Synced: 2025-05-15T17:13:43.397Z (5 months ago)
• Topics: cpp, cryptography, des, fast
• Language: C++
• Homepage:
• Size: 2.37 MB
• Stars: 0
• Watchers: 0
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# DESu DES

DES encryption + Triple DES + Multithread version

Overview

C++ implementation of DES - Data Encryption Standart algorithm.


Supports Triple DES, also can use some of your cores.


Tested and optimized for msvc 2017 and gcc.


MSVC compilation



  
Download repository

  
Run DES.sln

  
Press Ctrl+F5

  
Enjoy



Usage


Usage: DES mode [settings] keys_file input_file output_file


Key file generation for DES: DES -g 1 keyfile_name


Key file generation for Triple-DES: DES -g 3 keyfile_name


Modes


  

    -g

    key file generation

  

  

    -e

    encryptiont mode

  

  

    -d

    decryption mode

  

Settings


  

    -3 eee3

    Triple DES (DES-EEE3)

  

  

    -3 ede3

    Triple DES (DES-EDE3)

  

  

    -mt

    Multithread mode

  

Examples


Example: using command-line utility for encrypting


Generating key file

DES -g 1 keys.key

Encrypting file

DES -e keys.key input.bin input.enc

Decrypting file

DES -d keys.key input.enc input_decrypted.bin

Encrypting Triple DES EEE3

DES -e -3 eee3 keys.key input.bin input.enc

Using multithreading

DES -e -3 eee3 -mt keys.key input.bin input.enc


Example: encrypt raw block of data


Here we are just using DESEncrypter class from DES.h


#include "DES.h"

uint64_t data = //...your data;

uint64_t key = //...your key;

DESEncrypter encr{ data, key, DESEncrypter::Mode::ENCRYPT };

uint64_t output = encr.run(); //your encrypted data



Example: decrypt raw block of data



#include "DES.h"

uint64_t data = //...your data;

uint64_t key = //...your key;

DESEncrypter encr{ data, key, DESEncrypter::Mode::DECRYPT };

uint64_t output = encr.run(); //your encrypted data



Example: encrypring file

Here you should initialize instance of File_Crypter from DESFileCrypt.h


#include "DESFileCrypt.h"

fc = File_Crypter{};

fc.ifname = "/foo/bar"    // file you want to encrypt

fc.kname = "/foo/keys"    // file 

fc.ofname = "/foo/output" // output file

fc.read_keys();           // reads keys from keyfile and populates fc object with it

fc.mode = fc.Encrypt;     // fc.Encrypt or fc.Decrypt

fc.triple_des = true;     // if you want Triple_DES

fc.set_triple_des_mode(fc.EEE3);  // if you want Triple_DES

fc.multithread = true;    // if you want multithread

fc.run();