IPR Details
Reported Statement from NIST regarding use of DSA

The text of the original IPR disclosure is available in the disclosure history.

Submitted: July 23, 1993 under the rules in RFC 1310

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 The National Institute of Standards and Technology (NIST)

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

Designations for Other Contributions
Digital Signature Algorithm (DSA)

III. Disclosure of Patent Information i.e., patents or patent applications required to be disclosed by RFC 1310

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

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

U.S. patent 5,231,668

B. Does this disclosure relate to an unpublished pending patent application?:

Has patent pending No

IV. 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):

Licensing one selected]
Licensing information, comments, notes, or URL for further information

(No information submitted)

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.

V. Contact Information of Submitter of this Form

Submitter name
Submitter email

VI. Other Notes

Additional notes

Note: This text was extracted from an informal document (NOT an RFC,
nor a formal communication made to the IETF, the IESG, nor the IETF
Secretariat). The IESG/IETF take no position regarding the
validity or accuracy of the statement below.

Digital Signature Algorithm (DSA)

The U.S. Government holds U.S. patent 5,231,668 on the Digital
Signature Algorithm (DSA), which has been incorporated into Federal
Information Processing Standard (FIPS) 186. The patent was issued on
July 27, 1993.

The National Institute of Standards and Technology (NIST) has a long
tradition of supplying U.S. Government-developed techniques to
committees and working groups for inclusion into standards on a
royalty-free basis. NIST has made the DSA patent available royalty-
free to users worldwide.

NIST has provided the following statement with regard to this patent:

Regarding patent infringement, FIPS 186 summarizes our position; the
Department of Commerce is not aware of any patents that would be
infringed by the DSA. Questions regarding this matter may be directed
to the Deputy Chief Counsel for NIST.

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