Max Gekk created SPARK-37586:
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Summary: Add cipher mode option and set default cipher mode for
aes_encrypt and aes_decrypt
Key: SPARK-37586
URL: https://issues.apache.org/jira/browse/SPARK-37586
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 3.3.0
Reporter: Max Gekk
https://github.com/apache/spark/pull/32801 added aes_encrypt/aes_decrypt
functions to spark. However they rely on the jvm's configuration regarding
which cipher mode to support, this is problematic as it is not fixed across
versions and systems.
Let's hardcode a default cipher mode and also allow users to set a cipher mode
as an argument to the function.
In the future, we can support other modes like GCM and CBC that have been
already supported by other systems:
# Snowflake: https://docs.snowflake.com/en/sql-reference/functions/encrypt.html
# Bigquery:
https://cloud.google.com/bigquery/docs/reference/standard-sql/aead-encryption-concepts#block_cipher_modes
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