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Update language to emphasize that core goal is allowing SHA-1 to be deprecated #25
@schoen kindly emailed me to make sure I knew, and the site conveyed, that the dangers of SHA-1 won't be gone -- even for site owners that upgrade to SHA-2 -- until SHA-1 is widely deprecated and untrusted by exploitable systems. With his permission, I've included his email here:
To which I asked: "How can an attacker who can generate SHA-1 collisions make a fake cert for a cite using SHA-256? And if that's true, how does updating to SHA-256 help anybody?"
I'll update the copy to make this point more clear, and to link to http://www.win.tue.nl/hashclash/rogue-ca/, which is an excellent depiction of the problem.