gchq/CyberChef

zip with password bug

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#671 opened on Oct 11, 2019

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 (7 comments) (0 reactions) (0 assignees)JavaScript (34,843 stars) (3,944 forks)batch import
bughelp wanted

Description

I have used the zip function with a password to encrypt a file, however, zip succeeded but the password was not matched when decoding.

Contributor guide

Tech stack
javascriptnodejs
Domain
securityfull stack
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
4
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
unclear
Prerequisites
Knowledge of Zip encryptionFamiliarity with CyberChef operations
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
20
Research direction
Investigate the Zip operation implementation in CyberChef, particularly the password handling in the encryption process. Reproduce the bug with a sample file and known password. Check if the issue is in the underlying library (e.g., zip.js) or in CyberChef's integration. Look at related issues or closed PRs for clues. The maintainer may need to clarify the expected behavior and provide a concrete test case.