https://app.knowbase.one/vault/rfc/docid/6783
RFC6234: US Secure Hash Algorithms (SHA and SHA-based HMAC and HKDF)
Internet Engineering Task Force (IETF) D. Eastlake 3rd Request for Comments: 6234 Huawei Obsoletes: 4634 T. Hansen Updates: 3174 AT&T Labs Ca...