# Encryption Standards

## Secrets and key storage

* Secrets are write-only: once set, they cannot be retrieved in plaintext and must be rotated by re-setting.
* Secrets are encrypted at rest with AES-256.

## Encryption in transit

* External traffic uses TLS (HTTPS).

## Handling of secrets in applications

* Secret values are kept outside source control and deployment manifests.
* Applications read secrets at runtime through encrypted storage interfaces.

## Access control

* Access is limited to service identities and a small set of operators.
* Policies follow least-privilege access.


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