feistel

README

go-feistel

This package implements the Feistel cipher in go.
It contains the pure Feistel Encrypt/Decrypt functions as well as ECB and CBC implementations.

package main

import (
	"log"
	"github.com/Eun/go-feistel"
)

func main() {
	rounds := 2
	keys :=  []uint32{0xDEADBEEF, 0xFEEDFACE}
	secretText, err := feistel.ECB.Encrypt([]byte("Hello World"), rounds, keys)
	if err != nil {
		log.Fatal(err)
	}
	
	plainText, err := feistel.ECB.Decrypt(secretText, rounds, keys)
	if err != nil {
   		log.Fatal(err)
   	}
	
	log.Println(string(plainText))
}

Documentation

Index

• Variables
• func Decrypt(left, right uint32, rounds int, keys []uint32) (uint32, uint32)
• func Encrypt(left, right uint32, rounds int, keys []uint32) (uint32, uint32)

Variables

var CBC cbc

CBC contains the Encrypt and Decrypt functions using the CBC algorithm

var ECB ecb

ECB contains the Encrypt and Decrypt functions using the ECB algorithm

Functions

func Decrypt

func Decrypt(left, right uint32, rounds int, keys []uint32) (uint32, uint32)

Decrypt takes a left and right uint32 and decrypts it using the Feistel cipher, it returns the decrypted left and right parts

func Encrypt

func Encrypt(left, right uint32, rounds int, keys []uint32) (uint32, uint32)

Encrypt takes a left and right uint32 and encrypts it using the Feistel cipher, it returns the encrypted left and right parts