Side channels are weaknesses in security protocols that arise from flaws in the hardware and software used to implement the protocol, rather than from flaws in the protocol’s algorithms.
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Optech newsletter and website mentions
- Libsecp256k1 #906 reduces iterations when using a constant-time signing algorithm
- Libsecp256k1 #831 implements SafeGCD algorithm which speeds up side-channel resistant signing
- New SafeGCD algorithm can speed up signing while remaining side-channel resistant