ANSI X9.24 DUKPT libraries and tools

Node JS Library for Derived Unique Key Per Transaction (DUKPT) Encryption 💳🔑🛡

A golang tool to generate keys required for using 3DES-DUKPT

An HSM simulator implemented in Java, ANSI X9, 3DES, DUKPT, etc..

A .NET Standard implementation of TDES DUKPT, both PIN and Data variants.

Payment cryptography workflow library. EMV, DUKPT, PIN blocks, MAC, card validation, TR-31/TR-34, and HSM command inspection. Inspectable recipes for development, testing, and interoperability.

A Java implementation of Dukpt.NET

Spring boot, Encryption

This fork extends CyberChef with a focused set of payment cryptography operations intended for engineering, debugging, and interoperability work in regulated payment environments.

MCP server for AWS Payment Cryptography — key lifecycle, HSM migration analysis, and PCI-aware cryptographic operations. Works with Claude Code, Codex CLI, and any MCP-compatible client.

PHP library for Derived Unique Key Per Transaction (DUKPT)

Hierarchical Key Distribution System: a deterministic symmetric key-management protocol for scalable key derivation, rotation, and audit-ready governance.