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Thursday, September 14, 2006

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I think that the base derivation key (BDK) must be more longer ( 128 bits)...

How do you get a iskn and bdk;if not given.

Yes, I think Ben was right, according to Thales BDK generation tools, it produces a 32 digits of BDK value. I wanted to know what kind of utility that you have to creates a DUKPT PIN-Block ?

This Wikipedia post explains the relationship between the BDK and IPEK:

http://www.andyorrock.com/2006/09/creating_an_ipe.html

Ben/Flkri - you're both wrong. He has a 16 byte BDK which is 128 bits (16*8 = 128)...

Hi Andy

Could you please explain more on "IKSN are encrypted by the BDK", what method is using to encrypt IKSN here? I though XOR but seem not true

Thanks

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Resources

  • Alejandro's jPOS Project
    Faced with payment systems challenges? Start here to learn more about Alejandro Revilla's jPOS project.
  • Dave Bergert's Blog
    Insights from my OLS colleague, Dave Bergert, CISSP, CISA, CompTIA Security+, and former Visa-certified QSA.
  • Glenbrook's Blog List
    Glenbrook Partners has compiled "a current summary of the latest content from some of our favorite payments and banking blogs." Dave, Alejandro and I are on the list.
  • soliSYSTEMS
    My friend Roque Solis is our go-to guy for RFID, smart cards, chip cards, integrated circuit cards, HSMs, cryptographic accelerators and public-key cryptography.
  • Specs Online - AMEX
    American Express puts its acquirer specs online for public retrieval.
  • Specs Online - FDMS
    First Data Merchant Services puts its acquirer specs online for public retrieval.
    [NOTE: This repository is accessible only via IE; this link will not work with Firefox or other browsers.]

Documents

  • The PCI Split
    Depicts how we split an implementation into PCI and non-PCI halves.
  • The Virtuous Spiral
    A good payment system unleashes customer creativity. Does yours?
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  • Your attention to detail is a great asset. Use it wisely.