[BCP200]   Best Current Practice 200,
              <https://www.rfc-editor.org/info/bcp200>.
              At the time of writing, this BCP comprises the following:

              IAB and IESG, "IAB and IESG Statement on Cryptographic
              Technology and the Internet", BCP 200, RFC 1984,
              DOI 10.17487/RFC1984, August 1996,
              <https://www.rfc-editor.org/info/rfc1984>.