[cryptography] Alleged recovery of PS3 ECDSA private key from signatures

James A. Donald jamesd at echeque.com
Thu Dec 30 18:56:21 EST 2010

On 2010-12-30 9:41 PM, Peter Gutmann wrote:
> The whole talk (in three parts) is fascinating viewing, particularly the
> summary of jailbreaking of embedded devices:
> - Pretty much all of the (public) jailbreaks were to get Linux or other
> software onto the device, not for piracy.
> - All the devices were hacked in anything from one week to twelve months (the
> record, for the Xbox360).
> - Most of them used crypto, and AFAICT in none of them was the crypto directly
> broken (Shamir's Law, crypto is bypassed not attacked).

Some of that "bypassing" comes very close to an attack on the crypto - 
for example recovering the private key due their use of not at all 
random numbers.

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