PhilippC / PhilippC/keepass2android

[BUG] Database Password with Invalid char

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bug
Dominant language
C#
Stars
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Forks
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Avg merge
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Merged PRs (30d)
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Description

Checks
  • I have read the FAQ section, searched the open issues, and still think this is a new bug.
Describe the bug you encountered:

I update my database to v4 and now I can't open it with the following error:
"The input is nota valid Base-64 string as it contains a non-base 64 character, more than two padding characters, or an illegal character among the padding characters."

My password contains A-Z chars, a number and a underscore '_'
image

Describe what you expected to happen:

Expected to accept the password I always used, with the version 3 of the database

What version of Keepass2Android are you using?

1.10-pre

Which version of Android are you on?

14

Contributor guide

No contributing guide indexed for this repository

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Reproduce opening the v4 database in Keepass2Android 1.10-pre on Android 14 with a password containing an underscore, then trace where the invalid Base-64 error is raised. Compare the v3 and v4 password handling paths. Done means the existing password is accepted and a regression test covers this case.

Written by the indexing model from the issue text.

Assessment

Tech stack
android, csharp
Domain
databases, mobile, security
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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