On Jul 15, 2008, at 5:06 PM, Perry E. Metzger wrote:

Although the paper seems to be gone from Wikileaks, it is on cryptome:

http://cryptome.org/mifare-classic.pdf

This is a paper published on arXiv in March that does not contain the type of information NXP is suing over, which is why it was removed from Wikileaks.

The law suit is about a full disclosure of the Crypto1 security system that would allow anybody to build attack tools. However, as we all know, It would also convince more users of Mifare to consider upgrading to more secure technologies and potentially enable researchers to find countermeasures. The benefits clearly outweigh the risks since half a year after announcing the vulnerabilities, Mifare Classic is hopefully not used in any high security application anymore.

        -Karsten

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