The DESTester sample uses wires, triggers, and pipes to perform a simple processing task: encrypting or decrypting a block of data using DES. The DES engine used is available from OpenCores.org.

1. Download the pre-built sample bitfiles corresponding to your FPGA module from our Pins Downloads.
2. Find DESTester.exe or DESTester.py (and its source code) in the Samples Directory installed with FrontPanel
3. You need to have the following in a single directory:
   • DESTester.exe or DESTester.py
   • okFrontPanel.dll (.so for Linux, .dylib for macOS)
   • des.bit (from step 1)

A device is only accessible in one application at a time. Ensure the FrontPanel application is closed before running the sample.

Usage: DESTester [d|e] key infile outfile
   [d|e]   - d to decrypt the input file.  e to encrypt it.
   key     - 64-bit hexadecimal string used for the key.
   infile  - an input file to encrypt/decrypt.
   outfile - destination output file.

C:\Work\destest>DESTester.exe e 1234567812345678 in out
------ DES Encrypt/Decrypt Tester in C# ------
Device firmware version: 3.1
Device serial number: 102200AA15
Device ID: Opal Kelly XEM3001
FrontPanel support is available.
Encrypting in ---> out

C:\Work\destest>DESTester.exe d 1234567812345678 out in.out
------ DES Encrypt/Decrypt Tester in C# ------
Device firmware version: 3.1
Device serial number: 102200AA15
Device ID: Opal Kelly XEM3001
FrontPanel support is available.
Decrypting out ---> in.outCode language: PHP (php)