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709233d977
Challenge-response authentication: the client derives a scrypt verifier (RFC 7914, EVP_PBE_scrypt, N=32768, r=8, p=1) and authenticates with HMAC-SHA256(key, nonce), so neither the password nor its hash is transmitted. The stored format becomes "$scrypt$<n>$<r>$<p>$<salt>$<verifier>" and Response_PasswordSalt now carries the cost parameters. Strict servers only accept scrypt verifiers; legacy accounts are migrated after a successful login. Fix #344 for challenge-response servers: a saved profile stores the derived verifier under the password key instead of the plaintext password. The connect dialog loads it without revealing it, autoconnect passes it through, the change-password dialog no longer prefills the old password field with it, and the client only persists the verifier when "Save password" is checked. Took 3 minutes Took 1 minute Took 10 seconds Took 7 minutes |
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