Whitebox DES

This is an explanation on how a whitebox can be implemented, It follows Chow et al's paper on the subject.

It uses our previous implementation of DES in C.

To Do List

• Create encodings for the network of XOR tables.
• Split-Pathing for the XOR tables
• Mixing-bijections for M_0, M_1, M_2 and

How to use the C implementation

• WBDES.c and WBDES.h contain the functions used in the Whitebox-DES algorithm.

• main.c builds the algorithm and allows you to decrypt an input file using the Whitebox DES. To encrypt you can use a simple DES encryption.

use make to build desbox.

$ make

$ whitebox --help

• LtablesGen.c is a Lookup table generator that takes a key and generate a LtablesGen executable. Use it before building the main executable

use make to build the lookup table generator:

$ make Ltablesgen

$ ./Ltablesgen key

key must be in binary format.