Bcrypt allows a maximum of 72 bytes. This is part of the algorithm and not something we could change in Vikunja. The solution here was to restrict the password during registration to a max length of 72 bytes. In the future, this should be changed to hash passwords with sha512 or similar before hashing them with bcrypt. Because they should also be salted in that case and the added complexity during the migration phase, this was not implemented yet.
The change in this commit only improves the error handling to return an input error instead of a server error when the user enters a password > 72 bytes.
Resolves https://vikunja.sentry.io/share/issue/e8e0b64612d84504942feee002ac498a/
(cherry picked from commit 44a43b9f86)
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