The DESTester example 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.

The FrontPanel Platform interface for this example is shown below

An app version of the DESTester example is provided as a FrontPanel Platform app, written in JS+HTML+CS. This app is included in the FrontPanel Platform App Launcher.

The command line version of the app is available that is built using the FrontPanel C++ API. In addtion, there is a Python script version.

1. Download the pre-built example bitfiles corresponding to your FPGA module from our Pins Downloads.
2. Windows:
   • Find DESTester.exe or DESTester.py (and its source code):
     • For FrontPanel Classic, these are in the Samples directory installed with the FrontPanel SDK.
     • For FrontPanel Platform, they are in the Examples directory.
   • 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 example.

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)