andersonm-ibm opened a new pull request #10450:
URL: https://github.com/apache/arrow/pull/10450


   Exposes in PyArrow the high-level C++ API for Parquet encryption that was 
added in https://github.com/apache/arrow/pull/8023.
   Design document:  
https://docs.google.com/document/d/1i1M5f5azLEmASj9XQZ_aQLl5Fr5F0CvnyPPVu1xaD9U
   A test is added for writing and reading encrypted parquet files using a 
simple in-memory KMS, that is not to be used as an example of a KMS client. A 
separate PR will give an example KMS client.
   
   This PR handles only the file-level encryption.
   Dataset will be handled separately.
   The multithreading model is currently under investigation, so a lock is 
added to InternalFileDecryptor to prevent concurrency issues.
   
   


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