new transit card!! wait expiry WHEN??
-
Gateway of Last Resortreplied to Dubious Blur last edited by
@dubiousblur i think they're just issuing payment cards that only work contactless??
-
Dubious Blurreplied to Gateway of Last Resort last edited by
@wxcafe surprising! Dutch bank cards are PAN-less (at least, standard traditional 16 digit PAN) but have unified-Maestro apps on them and work in the UK on Transport for London’s bank card scheme.
Which country is this?
-
@dubiousblur @wxcafe All US debit cards I've seen have a PAN and can be used over one of the major networks (MasterCard, Visa, Discover, or American Express). When paying with them in person you're sometimes given the option of "debit or credit", where debit goes over an interbank ATM network and credit goes over the credit card network.
I don't remember how this is implemented in the EMV level, other than that there are multiple entries in the PSE
-
-
@dubiousblur @wxcafe EMV describes the cryptography and application protocols, ISO 7816 describes the packet format and physical layer for contact cards, and ISO 14443 describes the physical layer for contactless cards.
They're built upon one another, each standard has a few different sections describing more layers you could split it up into
-
@artemist @dubiousblur @wxcafe Yeah, ISO 7816 defines physical layer and common application protocol elements (e.g. the command you issue to select an appication), EMV specifies the specific commands and data structures for card payment processing, plus the PSE/PPSE app directories and how a terminal selects which applet to use plus when to prompt the user to pick their preferred applet for this transaction
-
@erincandescent @artemist @wxcafe ah, the framework for the things I’m understanding as applications (thinking of the list of issuer application IDs on Wikipedia) came later?
-
@dubiousblur @erincandescent @wxcafe EMV contact cards normally have a file on them named
1PAY.SYS.DDF01
, referred to as the "Payment System Environment", in a standard format that lists applications on the card and settings for it (e.g. priority, languages, human-readable name, application ID)I don't think the application IDs are in either specification, though IIRC they're in a format described by ISO 7816 and are activated using commands in ISO 7816
-
@artemist @dubiousblur @wxcafe Do you ever think about how 1PAY.SYS.DDF01 and 2PAY.SYS.DDF01 are fucking nonconformant AIDs?
-
@erincandescent @dubiousblur @wxcafe the fact that they're all ascii feels so weird
-
@artemist @dubiousblur @wxcafe Yeah in hex it starts 0x31/0x32 so its squatting the space that exists for BIN owners in ISO 7816-4:1993 but its in the wrong format (it should be all BCD, 0xF if an odd number of digits, then optionally 0xFF followed by any Proprietary Identifier Extension)
So its just straight up Illegal
Why is it like this.