SP 800-38E Rev. 1, Recommendation for Block Cipher Modes of Operation: XTS-AES Mode for Confidentiality on Storage DevicesInitial Public Draft
Updated 5 hours ago ()
Revision 1 updates the referenced specification to IEEE Std. 1619-2025 and clarifies NIST's requirements for the approved use of XTS-AES, including its scope of use, data-unit and key-scope limits, key requirements, and the ordering convention for ciphertext stealing. Rather than reproducing the XTS-AES specification, this recommendation incorporates IEEE Std. 1619-2025 by reference. To facilitate review of the draft SP, IEEE Std. 1619-2025 is publicly available during the public comment period. The public comment period is open through October 16, 2026. NOTE: A call for patent claims is included in this draft. For additional information, see the Information Technology Laboratory (ITL) Patent Policy - Inclusion of Patents in ITL Publications.
- Tags
- NIST, draft open for comment, SP 800-38E REV. 1
- Related exam domains
- CISSP 1: Security and Risk Management; CISM 1: Information Security Governance
- Source record id
- https://csrc.nist.gov/pubs/sp/800/38/e/r1/ipd
- First seen by InfoSec Signals
- Sep 23, 2026
Source: NIST CSRC drafts open for comment, National Institute of Standards and Technology, Computer Security Resource Center about this source more from it
Exam domain labels come from a keyword heuristic and are study hints, not an official mapping. The summary is the publisher's own text, shortened; the linked record is authoritative.