Cryptography

ISM-1766

When using SHA-2 for hashing, an output size of at least 224 bits is used, preferably SHA-384.

Topic
Using hashing algorithms
Applicable to
Official, Protected

History

Mar 2022
When using SHA-2 for hashing, an output size of at least 224 bits is used, preferably SHA-384.
While existing recommendations for the use of ASD-Approved Cryptographic Algorithms to protect OFFICIAL through to PROTECTED data addressed minimum key lengths, they didn’t address recommended key lengths.