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DBA-C0097 · Database Security & Access

Database Encryption at Rest and in Transit

Read an encryption plan. Keys live apart from the data files. This is not a compliance attestation.

Updated 25 October 2026 · Explainer

This is an original planning guide. It is not a vendor manual, an official standard, or legal advice. Example addresses use documentation ranges. Review every command before you paste it.

What this hour is for

The planner writes a comment for the engine you pick: a certificate and a database encryption key, a wallet, or disk encryption and pgcrypto for selected columns. Keys must live somewhere the database host can fail without taking the only copy.

Do not turn encryption on or off during the reading. Do not put a key in the note. This is a plan, not a compliance attestation.

192.0.2.10, 198.51.100.0/24, 203.0.113.0/24, and 2001:db8::/32 are documentation. example.com is a documentation name. A sample password is replaced. It is not a password you keep.

The change you can finish

Apply nothing while you are writing the note. When the lab window opens, it is one change on the database named in the ticket. Read the draft, then the database, then decide.

Rollback is the backup, the file, or the snapshot you saved first. You do not invent a rollback after the only copy is gone.

  1. Pick the engine.
  2. Read where the key lives.
  3. Name two people who can open it.
  4. Do not switch encryption.
  5. Stop.

Mistakes that outlive the statement

Database Encryption at Rest and in Transit goes wrong in a small set of ways. The list is here so the ticket can forbid them before the window.

Decisions to write down

One decision for Database Encryption at Rest and in Transit: The key location is a store. Nothing was switched. It is a plan. And the database is yours.

Checks before you call it done

Confirm this before you call the change done: The engine is written. The key store is named. Nothing was switched. It is not an attestation. And the database is yours. If one of those fails, stop.

Before you leave the database

Database Encryption at Rest and in Transit ends when the database in the prompt is the database in the ticket. If it is not, you are on the wrong database. Stop.

The draft stays a draft until a person has read the names in it. A generator does not log into the database. You delete a line that names a host, a database, or an account you did not write down.

192.0.2.10, 198.51.100.0/24, 203.0.113.0/24, and 2001:db8::/32 are documentation. example.com is a documentation name. They belong in the note. They are not values you leave on a database because a draft included them.

prompt-for-this is a reminder that a secret is missing. It is not a password, a key, or a token you save in the ticket or in git. A sample password in a draft is replaced. It is not a password you keep.

One change is the window. If two things move and the result is wrong, you will not know which one did it.

If the same step fails twice, stop for the day. Restore the copy you took first.

A second person reads the database name and the change aloud. If they cannot find them in the ticket, the note is not done.

This page is a planning guide. It is not a vendor manual, not an official standard, and not permission to touch a database you do not administer. You do not disable authentication, a firewall, or TLS to make a check pass.

Tools for this guide

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More in this cluster

The pillar for this page, and the next published pages filed with it.

Companion: Security: How SSL/TLS Works.