Oyster cracked

Oyster (and others) cracked [smallcool] — another lovely example of “don’t invent your own crypto algorithm”, it seems.

… We argue that this is a gross over-estimate and present an attack that recovers secret keys within minutes on a typical desktop PC or within seconds on an FPGA. Our attack exploits statistical weaknesses of the cipher.

One Response to “Oyster cracked”

  1. March 19th, 2008 | 8:44 am

    The campus ID Cards, that open all the electronic locks use Mifare too… Now someone can clone your room key by walking past you!