# AC-17 (02) Protection of Confidentiality and Integrity Using Encryption — NIST 800-53 Rev5 control

> FedRAMP Consolidated Rules for 2026 v2026.07.14.01 · updated 2026-07-14
> Canonical page: /control/ac-17.2

Canonical id: `ac-17.2` · family `AC`

> Implement cryptographic mechanisms to protect the confidentiality and integrity of remote access sessions.

_Control title and statement: NIST SP 800-53 Rev5 catalog (the pinned commit is in `/api` under `control_text`). The FedRAMP rules reference these controls by id only; everything below is what FedRAMP says about this id._

## Rev5 baseline membership

- certification class C (in the annual independent assessment)
- certification class D (in the annual independent assessment)

## Key Security Indicators that reach it

- `KSI-IAM-ELP` — Ensuring Least Privilege (Identity and Access Management)
  Identity and access management measures are used and persistently reviewed to ensure each user or device can only access the resources they need.
- `KSI-SVC-ASM` — Automating Secret Management (Service Configuration)
  Management, protection, and regular rotation of digital keys, certificates, and other secrets is automated and persistently reviewed.
- `KSI-SVC-SIN` — Securing Information (Service Configuration)
  Information is encrypted or otherwise secured from unwanted access or modification.

## FedRAMP guidance

_No FedRAMP-specific guidance attaches to this control._

## Annual independent assessment

In the annual assessment subset for class C, D.