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Bitland.Net Security Notes
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| Archives: 2007, 2006, 2005, 2004, 2003, 2002, 2001, 2000 |
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| Glitch Attacks and Amateur Cryptographers | (2007/05/11 12:05) |
Nate's blog (rdist) talks about Glitch Attacks and links to some good papers on the topic. Basically, this is probably the most interesting general purpose cryptographic attack technique to come about in the past few years. By introducing fluctuations to the power supply or clock you can make the CPU execute a number of wrong instructions. If you can do this, you can recover a DES key with between 1 and 10 faulty ciphertexts. You can factor a RSA key with one.
The most fascinating thing is that this technique seems to have originated
with the pay-tv hacking community, not from academics or conventional
crypto researchers. |
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