Squeezing a key through a carry bit (34c3)
from Chaos Computer Club - 34C3: TUWAT (opus) Hosted by Filippo Valsorda
The Go implementation of the P-256 elliptic curve had a small bug due to a misplaced carry bit affecting less than 0.00000003% of field subtraction operations. We show how to build a full practical key recovery attack on top of it, capable of targeting JSON Web Encryption. about this event: https://fahrplan.events.ccc.de/congress/2017/Fahrplan/events/9021.html
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This episode is 49 minutes long.
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This episode was published on December 26, 2017.
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