constant THRESHOLD_TO_JUSTIFY_COMPRESSION

This threshold cannot be changed.

Users can search for attributes encrypted with ‘deterministic: true`. That is possible because we are able to generate the message for the given clear text deterministically, and with that perform a regular string lookup in SQL.

Problem is, messages may have a “c” header that is present or not depending on whether compression was applied on encryption. If this threshold was modified, the message generated for lookup could vary for the same clear text, and searches on exisiting data could fail.