IPR Details
VeriSign's Statement about IPR related to draft-mraihi-mutual-oath-hotp-variants, draft-mraihi-totp-timebased, draft-ietf-keyprov-dskpp, draft-ietf-keyprov-pskc, and RFC 4226

Submitted: February 25, 2009 under the rules in RFC 3979 as updated by RFC 4879

Note: Updates to IPR disclosures must only be made by authorized representatives of the original submitters. Updates will automatically be forwarded to the current Patent Holder's Contact and to the Submitter of the original IPR disclosure.



I. Patent Holder/Applicant ("Patent Holder")

Holder legal name

II. Patent Holder's Contact for License Application

Holder contact name
David M'Raihi
Holder contact email
Holder contact info

685 E. Middlefield Road
T: 650 426 3832

III. Contact Information for the IETF Participant Whose Personal Belief Triggered this Disclosure

David M'Raihi
Other info

685 E. Middlefield Road
T: 650 426 3832

IV. IETF Document or Other Contribution to Which this IPR Disclosure Relates

draft-mraihi-mutual-oath-hotp-variants ("OCRA: OATH Challenge-Response Algorithm")
Revisions: 08
Sections: sections 4, 5, 7 and 8
draft-mraihi-totp-timebased ("TOTP: Time-Based One-Time Password Algorithm")
Revisions: 01
Sections: section 4
draft-ietf-keyprov-dskpp ("Dynamic Symmetric Key Provisioning Protocol (DSKPP)")
Revisions: 07
Sections: section 2.2, page 13 and examples in appendix B
draft-ietf-keyprov-pskc ("Portable Symmetric Key Container (PSKC)")
Revisions: 02
Sections: sections 1,4,5,6,7,8 and 10.1
RFC4226 ("HOTP: An HMAC-Based One-Time Password Algorithm")
Sections: all technical sections, mainly 5 and 7

V. Disclosure of Patent Information i.e., patents or patent applications required to be disclosed by RFC 3979 as updated by RFC 4879

A. For granted patents or published pending patent applications, please provide the following information:

Patent, Serial, Publication, Registration, or Application/File number(s)

AU20050295579 CA20052583741 CN200580042646 EP20050812772 JP20070536963T KR20077009339 WO2005US37113 11/665,027
Date: 2005-10-17,2005-10-17,2005-10-17,2005-10-17,2005-10-17,2007-04-25,2005-10-17,2007-04-10
Country: Australia, Canada, China, Europe, Japan, Korea, PCT, US

Notes: Dates and countries in the same order as patent list: e.g. CN200580042646 is third in the patent list, so date is 2005-10-17 (3rd) and country is China (3rd)

B. Does this disclosure relate to an unpublished pending patent application?:

Has patent pending

VI. Licensing Declaration

The Patent Holder states that its position with respect to licensing any patent claims contained in the patent(s) or patent application(s) disclosed above that would necessarily be infringed by implementation of the technology required by the relevant IETF specification ("Necessary Patent Claims"), for the purpose of implementing such specification, is as follows(select one licensing declaration option only):

Royalty-Free, Reasonable and Non-Discriminatory License to All Implementers
Licensing information, comments, notes, or URL for further information

"The license offered by VeriSign under this Patent Disclosure and Licensing Declaration includes the terms in this statement. As used in this statement, capitalized terms shall have the following meanings:

"Patent Rights" shall mean any and all patent rights arising from the
above-listed applications that are necessary to practice RFC 4226.

"Practicing Covered Technology" shall mean making, having made, using,
selling, offering for sale, importing or exporting any technology
covered by any Patent Rights.

VeriSign agrees not to assert its Patent Rights against any entity for
any past, present or future infringement of such Patent Rights, unless:

1) An entity brings suit for patent infringement for any product or
service under any patent against VeriSign, it's affiliates or successors
in interest;


2) An entity brings suit for patent infringement against any other
entity for Practicing Covered Technology.

VeriSign retains the right to assert its patent rights against any
entity for practicing technology that is not necessary for compliance
with RFC 4226.

Notwithstanding the foregoing, VeriSign may grant to any entity a
royalty-bearing license to some or all of the Patent Rights on
mutually-agreed upon terms."

Note: The individual submitting this template represents and warrants that he or she is authorized by the Patent Holder to agree to the above-selected licensing declaration.

VII. Contact Information of Submitter of this Form

Submitter name
David M'Raihi
Submitter email

VIII. Other Notes

Additional notes


Only those sections of the relevant entry form where the submitter provided information are displayed.