Possible to embed decryption keys for encrypted Postgres database?

I am trying to connect an encrypted Postgres database to my QuickSight as a data source. Is it possible to connect to the data in QuickSight by embedding decryption keys in QuickSight? Keys cannot be visible to users.

Hi Alexander,

I would like to understand process of encrypting data in Postgres DB for example - is data encrypted before loading into DB or AWS KMS keys are used for encrypting data in DB and Where is the encryption key managed – in AWS KMS or customer owned and managed.