Tools for Payment Device Integration: Encrypt/Decrypt Tool - ID TECH - Knowledge Base - IDTECH - Confluence
GitHub - PenTest-duck/S-DES: Tool for performing Simplified DES encryption/ decryption, with multiple block support, and a step-by-step display of the process.
The top 24 free tools for data encryption
Java Code for DES - Javatpoint
Simplified version of the DES (Data Encryption Standard) in C# - CodeProject
EFF DES cracker - Wikipedia
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Free Encryption Tool With GUI, Command Line Version: Subcrypter
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DES and Triple DES Implementation in VB.NET - CodeProject