Adjust X509 fingerprint Mozilla CA format
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- Python
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Description
It came to my attention that the mozilla-ca list of known CA certificate fingerprints do not appear to use commas for separating the (hex-represented) bytes of the fingerprint.
This seems to be a problem to be as for example IDS like suricata provide a tls.fingerprint keyword that expects the fingerprint in that format.
Also any resource I was able to find use the same format, see this [1] as an example
I'm wondering what would be the best approach in this case, I see two alternatives:
- adjust the list to hex format (for example adding the same entries twice);
- create another list with the hex format
Looking forward for your comments
[1] https://www.netlock.hu/USEREN/html/cacrl.html
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with the mozilla-ca warning list and inspect how its certificate fingerprints are currently represented. Compare the entries with the Suricata tls.fingerprint format and the referenced CA list; the work is done when the chosen approach provides a consistent hex representation without ambiguity.
Written by the indexing model from the issue text.
Assessment
- Domain
- security
- Issue type
- Bug
- Difficulty
- 2/5
- Estimated time
- 1-3 hours
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 25/100