On 2010-09-09 6:35 AM, Ben Laurie wrote:
What I do in Nigori for this is use DSA. Your private key, x, is the
hash of the login info. The server has g^x, from which it cannot
recover x,

Except, of course, by dictionary attack, hence g^x, being low
entropy, is treated as a shared secret.

and the client does DSA using x.

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