Is there an opensource library implementing DUKPT or ANSI X9.24 [closed]

Question

I'm tasked with implementing a decryption functionality against a device using the DUKPT protocol/scheme/algorithm.

The encryption algorithm itself is just DESede which is easy to work with and have good library support(JCE, BouncyCastle).

The problem is the DUKPT part. I have the Base Derivation Key(a shared secret), the Key Serial Number and the cipher text but I am not able to figure out what to do next.

As much as possible, I do not want to write my own implementation and I would prefer to use a well tested library instead.

Is there such a thing available?

Note: DUKPT = Derived Unique Key Per Transaction

Answer 1

I don't know exactly how DUKPT works, but using the excellent Thales Simulator Project, I took the DUKPT code and ported it to a Java library, my very own crypto-utils project.

Disclaimer: This was a learning exercise for myself and is NOT production code. It may be of help