Reminder: The ROCA paper authors say you can break bad RSA 2K keys for $20k, but someone might optimize that to $200 in short order.
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Considering they say it's parallelizable and yet only speak of CPUs and not GPUs, I'd be very worried.
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Also I just made their vulnerable key checker Python code 3 times faster, so there's that.https://github.com/crocs-muni/roca/issues/39 …
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I did the brute force for the 3DS boot ROM RSA padding fail. A 1080 Ti can do 60,000,000 2048-bit modular multiplies per second.
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I just wish I had an easy way to convert raw public keys I have into a format usable by a checker. Similarly, a way to scan Authenticode sig
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