The Facts about Brute Force Search of DES Keyspace!

Ok, please calm down. Most of you here might haven’t hear about “Brute Force Search of DES Keyspace” before. For those that want to know more about it, then you should stick with us…

For your information, there is a machine named “DES cracker”, where it’s built by the Electronic Frontier Foundation (EFF). The main purpose of this stuff is to perform a brute force search of DES keyspace.


The whole process is quite simple, where the DES cracker will decrypt an encrypted message by trying every possible key. Believe it or not, a EFF’s DES cracking machine contained over 1,800 custom chips and it can brute force a DES key in days. However, the price for a DES cracker machine is not cheap, as it yield about USD$ 250,000 each!

If you cannot afford this immensely expensive stuff, then you’ve to figure out the way to build it by yourself! In this project, you’re going to use the Verilog hardware description language to design a brute force DES key cracker. You can give any nickname you want, such as “RED”, “BLUE” or “GREEN” to search the abbreviated keyspace of the LM algorithm.

All of the search can be done by hardware running on an Altera Cyclone II FPGA. The user is allowed to control the device by interfacing with four pushbuttons and a toggle switch. The information will be displayed on the LCD in the very end!

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