IPR Details
RSA Security's statement on public-key cryptosystem patent

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

Submitted: September 12, 2000 under the rules in RFC 2026

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 RSA Security Inc.

II. Patent Holder's Contact for Licence Application

Holder contact name Margaret K. Seif
Holder contact email
Holder contact info

Vice President and General Counsel

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

Designations for Other Contributions
public-key cryptosystem patent

IV. Disclosure of Patent Information i.e., patents or patent applications required to be disclosed by RFC 2026

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

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

Country: USA

B. Does this disclosure relate to an unpublished pending patent application?:

Has patent pending No

V. 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 See Text Below for Licensing Declaration
Licensing information, comments, notes, or URL for further information

RSA Security Inc. recognizes that the RSA public-key cryptosystem covered by
U.S. Patent #4,405,829, which is owned by Massachusetts Institute of
Technology and licensed exclusively to RSA Security, is cited and employed
within a large number of standards documents and drafts (such as ANSI X9.31
and X9.44, FIPS 186-2, IEEE 1363, IETF S/MIME, IPsec and TLS, ISO/IEC 9796-2
and 14888-3, and WAP WTLS). The patent was due to expire on September 20,
2000. On September 6, 2000, RSA Security announced that, effective
immediately, it would not enforce the patent against third parties who desire
to create, sell or offer to sell in the U.S. products that incorporate their
own implementation of the RSA algorithm.

RSA Security does not claim ownership of any additional intellectual property
needed to implement and practice the RSA public-key cryptosystem contained
within U.S. Patent #4,405,829. Thus, third parties may now sell or offer to
sell in the U.S. implementations of the RSA public-key cryptosystem without a
license from RSA Security. However, RSA Security does not represent or
warrant that implementations of the algorithm will not infringe the
intellectual property rights of any third party.

RSA Security does maintain copyright and other intellectual property rights
in RSA's own implementations of the RSA public-key cryptosystem, which are
incorporated into the RSA BSAFE(r) toolkit and other RSA Security products
and made available to other organizations under license. This licensing
practice is unaffected by the expiration of U.S. Patent #4,405,829.

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.

VI. Contact Information of Submitter of this Form

Submitter name
Submitter email

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