Hi Folks,
Ed Felten has an interesting post on his blog about a Dutch smartcard based transportation payment system that has been broken. Among other foolishness, the designers used a custom cryptosystem and 48 bit keys.
Not to defend the designers in any way or fashion, but I'd like to ask, How much security can you put into a plastic card, the size of a credit card, that has to perform its function in a secure manner, all in under 2 seconds (in under 1 second in parts of Asia)? And it has to do this while receiving its power via the electromagnetic field being generated by the reader.
Regards, Aram Perez --------------------------------------------------------------------- The Cryptography Mailing List Unsubscribe by sending "unsubscribe cryptography" to [EMAIL PROTECTED]
