The UK Payments Association, which represents the interests of payment cards companies, said that an attack using the device would be unlikely to be carried out by anyone other than researchers. HMV only became aware of the faked transaction when Choudary alerted it to the test, he added. "At the beginning, that shop was not aware ," he said. "The banks already know about the device, and the idea is that this gets fixed."Ĭhoudary said that he had successfully tested the device in an HMV store in Cambridge. "We told banks about this nine months ago - there's no point in hiding it," he said.
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Choudary responded to a question about this risk by saying that full disclosure of the details was necessary to get banks to tighten up the security of chip and PIN.
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"I would like this as an open framework for research to investigate how the protocol works, and to secure what's remaining," said Choudary.Īs the hardware plans and software are now available publicly, they could be used by criminals to commit card fraud. While the earlier researchers constructed a device to demonstrate their method, they did not publish the software they used or details of circuit boards. Instead, he successfully modified the EMV - Europay, MasterCard, Visa - protocol that underlies chip-and-PIN validation.Ĭhoudary built the device to provide a practical demonstration of Cambridge University research, including a crack of chip and PIN published in February. Using the Smart Card Detective, Choudary said he was able to carry out a card transaction without a valid PIN.
"It looks at the commands between the terminal and the card, sees the PIN requested and replaces the PIN."
"The device can modify communications between a credit card and a terminal," Choudary told ZDNet UK. Software to crack the encryption used by credit card chip-and-PIN readers has been publicly released on the web.Ĭambridge University research student Omar Choudary open-sourced and published the code on Wednesday, along with technical details of hardware used in the Smart Card Detective, a device he built and used to modify a transaction between a credit card and a reader.
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