[BCP132]   Best Current Practice 132,
              <https://www.rfc-editor.org/info/bcp132>.
              At the time of writing, this BCP comprises the following:

              Housley, R. and B. Aboba, "Guidance for Authentication,
              Authorization, and Accounting (AAA) Key Management",
              BCP 132, RFC 4962, DOI 10.17487/RFC4962, July 2007,
              <https://www.rfc-editor.org/info/rfc4962>.