Add NIST recommended crypto algorithm for encryption at rest

[ColinSullivan1]

Feature Request

A Synadia customer requested the following:

...is there a plan to support more cryptographic algorithms for Encryption at Rest? As of today there are only ChaCha-based ones which are not endorsed by NIST and, I think, other organisations (e.g. ENISA). Are there any plans to add AES-based ciphers?

Proposed Change:

Add support for NIST recommended algorithms, preferably an AES algorithm but will defer to @philpennock.

Who Benefits From The Change(s)?

Users who need to adhere to NIST standards.