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
* style: Add braces to all control flow statements
Standardize code style by adding explicit braces to all single-statement
control flow blocks (if, else, for, while) across the entire codebase.
Also documents the InsertBraces clang-format option (requires v15+) for
future automated enforcement.
* InsertBraces-check-enabled
* [Cleanup] Unused #includes
Took 44 minutes
* [Cleanup] More unused #includes
Took 55 minutes
* [Cleanup] Include QSet
Took 4 minutes
* [Cleanup] Include QDebug in deck_list.cpp
Took 3 minutes
* [Cleanup] Include protocol stuff in servatrice_database_interface.h
Took 3 minutes
* [Cleanup] Include QDialogButtonBox
Took 8 minutes
* [Cleanup] Include QUrl
Took 8 minutes
* [Cleanup] Include QTextOption in header.
Took 3 minutes
* [Cleanup] Include QMap in user_list_manager.h
Took 8 minutes
* [Cleanup] Adjust qjson
Took 8 minutes
* [Cleanup] include button box.
Took 3 minutes
* [Cleanup] Redo fwd declarations.
* [Cleanup] Redo last removed fwd declarations.
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Co-authored-by: Lukas Brübach <Bruebach.Lukas@bdosecurity.de>
