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Enterprise Postgres 14 SP1 Operation Guide
FUJITSU Software

6.1 Protecting Data Using Encryption

Refer to "5.1 Protecting Data Using Encryption". The following describes the differences from the transparent data encryption operation in the file-based keystore described in "5.1 Protecting Data Using Encryption".

Encryption mechanisms

Two-layer encryption key and the keystore

Each tablespace has a tablespace encryption key that encrypts/decrypts all data in it. Tablespace encryption keys are stored encrypted with the master encryption key.

Only one master encryption key exists in the database cluster and is stored encrypted in the keystore.