Re: [webauthn] Clarity on challenge length (#1803)

Correct, length is not enough but it is still an important factor. You can have a 2 byte challenge from the purest entropy money can buy, and that would be insufficient. You do need a minimum length, and there are production deployments that don't even meet the specifications recommendations today. Constraints are an important element in human interaction psychology, because without them people will make mistakes that have consequences. Introducing a minimum length constraint is good because it guides people to do the right thing.

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Received on Tuesday, 27 September 2022 00:11:56 UTC