postgres/documentation/docs/test.md

Test Transparent Data Encryption

To check if the data is encrypted, do the following:

1. Create a table in the database for which you have enabled pg_tde. Enabling pg_tde extension creates the table access method tde_heap_basic. To enable data encryption, create the table using this access method as follows:

   CREATE TABLE <table_name> (<field> <datatype>) USING tde_heap_basic;
   

   !!! hint

    You can enable data encryption by default by setting the `default_table_access_method` to `tde_heap_basic`:
   
    ```sql
    SET default_table_access_method = tde_heap_basic;
    ```
   

2. Run the following function:

   SELECT pg_tde_is_encrypted('table_name');
   

   The function returns t if the table is encrypted and f - if not.

3. Rotate the principal key when needed:

   SELECT pg_tde_rotate_principal_key(); -- uses automatic key versionin
   -- or
   SELECT pg_tde_rotate_principal_key('new-principal-key', NULL); -- specify new key name
   -- or
   SELECT pg_tde_rotate_principal_key('new-principal-key', 'new-provider'); -- change provider