You are viewing bramcohen

Thu, May. 19th, 2011, 09:25 pm
bramcohen

RSA in particular has vicious attacks when you do authentication checks the wrong way, but that's really an argument in favor of doing authentication properly rather than changing the order, particularly because checking that high order byte is something a naive implementer might do anyway.

That more complicated stuff you mention really shouldn't be done by people who don't already know these issues well, and my advice is for people who don't really know what they're doing by are trying to do something simple (which still might not be a good idea, but they're better off with good advice than without).

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