A jwk file extension is related to the JSON web key format used to store cryptographic key.
JWK file extension - JSON web key
What is jwk file? How to open jwk files?
File type specification:
The jwk file extension is related to the JSON (JavaScript Object Notation), a an open-standard format that uses human-readable text to transmit data objects consisting of attribute–value pairs.
The jwk file stores web key (cryptographic key).
This jwk file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.