0
votes
1answer
19 views

What is the point to the IPEK in DUKPT?

I'm trying to understand the DUKPT (Derived Unique Key Per Transaction) system used for PIN devices, but I'm getting hung up on the IPEK. This blog post has an image where the sequence is: BDK ...
0
votes
1answer
44 views

Are there software solutions take encrypted credit card data taken straight off a square credit card reader and insert them into a standard web form? [closed]

Does anyone know how you can take the encrypted output of a square card reader and insert it directly into a standard web form?
1
vote
1answer
482 views

How does paypal store credit card numbers?

How does Paypal store credit card numbers? Have they published any information this? As for now I would say that they encrypt the card numbers and store the key in an HSM, but this is just a ...
2
votes
1answer
290 views

Credit card data - sharing and storage [duplicate]

What is the industry standard for sharing credit card data between client (thin & thick) and server?
4
votes
1answer
224 views

Has the wedge security flaw been fixed for credit cards?

According to this site http://www.lightbluetouchpaper.org/2009/08/25/defending-against-wedge-attacks/ there is a flaw in EMV. Since then has this flaw been fixed? Is it the same law as the one ...
8
votes
3answers
6k views

What is the DUKPT Key Derivation Function?

I'm tasked with decrypting ciphertext acquired from an encrypted card reader. The card reader utilizes DUKPT(derived unique key per transaction) scheme and 3DES encryption. I don't have a problem with ...