Both specifications normatively reference RFC 6090,
as a specification for mandatory to implement algorithms. Two
disclosures have been filed against an Internet-Draft for that
specification. Please refer to the IPR disclosure page for this RFC for current disclosure information.
A Working Group member has brought the US patents no. 6,704,870
and no 6,563,928 to the group as "two patents that seem to pertain."
(see member-confidential archived note)