Security Innovation NTRU cryptographic software invention and reference source code including NTRUCrypt and NTRUSign/PASS is a dual license product available under open source and standard commercial licensing.
NTRU cryptographic patents may be used as long as the user adheres to version two (2) or higher of the GPL License. For details please refer to COPYING-2.txt included in this distribution.
The GPLv2 license may also be found on the gnu.org website at: (http://www.gnu.org/licenses/gpl-2.0.html)
Businesses and enterprises that wish to incorporate NTRU cryptography into proprietary appliances or other commercial software products for re-distribution must have a commercial license. Commercial licenses are available using flexible licensing terms on a one time per product fee or running royalty. For details please refer to COMMERCIAL LICENSE.doc included in this distribution.
Invention U.S. Patent No. U.S. Issue Date U.S. Application No. U.S. Filing Date Countries
Secure User Identification based on constrained polynomials 6,076,163 Jun13, 2000 08/954,712 Oct 20, 1997 US
Public key cryptosystem method and apparatus 6,081,597 Jun 27, 2000 08/914,449 Aug 19, 1997 US, Japan, Canada, Australia, Israel, China, Europe
Ring-based public key cryptosystem method 6,298,137 Oct 2, 2001 09/543,708 Apr 5, 2000 US, Europe, Canada
Secure user identification based on ring homomorphisms 6,959,085 Oct 25, 2005 09/564,112 May 3, 2000 US, Europe, Canada
Speed enhanced cryptographic method and apparatus 7,031,468 Apr 18, 2006 09/939,531 Aug 24, 2001 US, Europe, Canada
Digital signature and authentication method and apparatus 7,308,097 Dec 11, 2007 10/313,082 Dec 6, 2002 US, Europe, Canada
Digital signature and authentication method and apparatus 7,913,088 Mar 22, 2011 11/986,101 Nov 20, 2007 US, Europe, Canada
Digital signature and authentication method and apparatus Pending Pending 20090070590 Mar 12, 2009 US, Europe, Canada
Security enhanced public key cryptosystem Pending Pending Pending Aug 12, 2001 US