adamreeve commented on issue #15216:
URL: https://github.com/apache/datafusion/issues/15216#issuecomment-2826229093

   With the KMS API not being included in arrow-rs but being built as a 
third-party crate 
(https://github.com/apache/arrow-rs/pull/7387#issuecomment-2819908130), I would 
assume we probably don't want to depend on that in Datafusion, but keep the 
encryption integration more flexible to allow other approaches?
   
   I think it should still be possible to achieve this while mostly using 
string-based configuration, but the encryption configuration might need to be 
an opaque string or an arbitrary JSON object.
   
   We could support configuring encryption keys directly by default without 
needing programmatic access, but allow registering factory methods that could 
take the configuration string and produce file decryption or encryption 
properties. I believe you've suggested something like this previously 
@corwinjoy.


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