openwall / openwall/john

Reject hashes in a helpful manner

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#3,222 9 comments 0 reactions 0 assignees View on GitHub

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enhancement
Dominant language
C
Stars
13.6k
Forks
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PR merge metrics
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Description

See https://github.com/magnumripper/JohnTheRipper/issues/3221 for details.

Example: If the ethereum-opencl format seems a valid ethereum hash with an unsupported KDF (e.g. scrypt KDF), it should reject such hashes with a helpful error message.

Contributor guide

Open the contributing guide

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

Read linked issue 3221 for the missing details, then inspect the ethereum-opencl format entry point. The change is complete when hashes using an unsupported KDF such as scrypt are rejected with a helpful error message rather than treated as valid.

Written by the indexing model from the issue text.

Assessment

Tech stack
c
Domain
cryptography, security
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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