When using AES for encryption, AES-192 or AES-256 is used, preferably AES-256.
Topic
Using symmetric encryption algorithms
Applicable to
Top Secret
History
Mar 2022
When using AES for encryption, AES-192 or AES-256 is used, preferably AES-256.
The existing table outlining cryptographic algorithms for use with High Assurance Cryptographic Equipment has been converted into discrete recommendations. Furthermore, the recommendation to give preference to the United State’s Commercial National Security Algorithm suite algorithms and key sizes (ISM-1232) has been rescinded in preference to including recommended key lengths for each individual algorithm.