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Request #81528 Support multiple peer_fingerprint values per algorithm
Submitted: 2021-10-16 00:54 UTC Modified: 2021-10-16 01:12 UTC
From: david at mandelberg dot org Assigned:
Status: Open Package: OpenSSL related
PHP Version: master-Git-2021-10-16 (Git) OS:
Private report: No CVE-ID: None
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 [2021-10-16 00:54 UTC] david at mandelberg dot org
Description:
------------
Would it be possible to extend peer_fingerprint from https://www.php.net/manual/en/context.ssl.php to support an array of multiple fingerprints per algorithm, instead of just one? I don't currently see a way to configure secure certificate verification for a redundant service (where each server has its own certificate) without using a CA.


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 [2021-10-16 01:10 UTC] requinix@php.net
Or easier, change the array form to support non-string keys (or ignore keys entirely) and instead deduce algorithm by the length - like it already does for the string form.
 [2021-10-16 01:12 UTC] david at mandelberg dot org
I don't think deducing the algorithm from the length is a good idea long-term, because there are multiple good algorithms with the same output length. E.g., SHA-256 and SHA3-256.
 
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