en.swpat.org is a wiki.   You can edit it.   May contain statements End Software Patents does not endorse.

November 2014: About Microsoft’s patent licence for .NET core

SitemapCountriesWhy abolish?Law proposalsStudiesCase lawPatent office case lawLawsuits


RSA patent

From en.swpat.org
Jump to: navigation, search

The RSA patent covers an encryption algorithm which is used in secure communications.

This software patent was the result of a lot of research and it was innovative. It was not possible to overturn the patent by any form of re-examination. The RSA patent is thus a good example of why Raising examination standards won't fix much. What we need, is to exclude software from patentable subject matter if we want to be saved from the harms of software patents.

That said, the key technology for the use of RSA is the production of large prime numbers. Fortunately, this was never patented. RSA itself is icing on the cake. As Anthony Berglas writes:

Good techniques are often avoided due to patent issues. For example, the weaker RSA cryptographic algorithm is used instead of the more secure Eliptic Curve public keys because of patents.[1]

Contents

Prior art

In 1973 Clifford Cocks of GCHQ had developed the same algorithm.[2] But it remained classified until 1997.[3] As this work was classified, and hence not published before the patent was filed, it cannot be counted as prior art that could invalidate the RSA patent.

Related pages on en.swpat.org

External links

References

  1. http://www.acip.gov.au/reviewpatentable/Berglas,%20Anthony.pdf
  2. http://www.cesg.gov.uk/publications/media/notense.pdf
  3. "Some aspects of public-key encryption". http://www.nugae.com/encryption/public.htm. "a British government scientist had invented the same system more than ten years before but his work was classified and never published" 


This wiki is part of the End Software Patents (ESP) campaign (donate). For more information, see:
>> endsoftwarepatents.org (Main ESP website) <<
>> endsoftwarepatents.org/news (News) <<

This wiki is publicly editable. (See: en.swpat.org:About) It's a pool of information, not a statement of ESP's views or policies, so no permission is required. Add your knowledge! (See: Help:How to make a good contribution)