eSTREAM Portfolio Stream Ciphers -- IP Status
|F-FCSR||statements||Free for any use|
|Grain||statements||Free for any use|
|HC||statements||Free for any use|
|MICKEY||statements||Free for any use|
|Rabbit||statements||Patented, but free for noncommercial use|
|Salsa20||statements||Free for any use|
|SOSEMANUK||statements||Free for any use|
|Trivium||statements||Free for any use|
The F-FCSR-H v2 and F-FCSR-16 stream ciphers are the intellectual property of their inventors. This work is supported by the Université de Limoges, the Centre National de la Recherche Scientifique and the Institut National de la Recherche en Informatique et Automatisme.
To our knowledge, the F-FCSR-H v2 and F-FCSR-16 stream ciphers are not based on any licensed, patented or otherwise legally restricted existing work.
The inventors wish that the F-FCSR ciphers and the provided reference implementations are and remains freely available, and may be used by anyone for any purpose, including commercial exploitation, without restriction.
The inventors also undertake the task to update the F-FCSR ciphers as required by the ECRYPT Stream Cipher project when necessary.
The Grain stream cipher is Copyright © 2005, Martin Hell, Thomas Johansson and Willi Meier. The Grain cipher is not based on any licence or patents.
We hereby grant anybody licence to use, copy, modify or distribute the Grain cipher under the following terms:
- You may not license or patent any intellectual work and/or product based on a copy or a modification of the Grain cipher. You may include the Grain cipher in a licensed or patented product but the Grain cipher must then be excluded from the license or patent in question.
- The copyright holders are not legally responsible for any damage caused by the use of any product based on the Grain cipher.
- You may not use, copy, modify, or distribute the Grain cipher except as expressly provided under this license. Any attempt otherwise to use, copy, modify or distribute the Grain cipher is void, and will automatically terminate your rights under this license.
This license can only be made void by the copyright holders and the ECRYPT NoE committee in agreement with the copyright holders.
The authors also undertake the task to update the Grain cipher as required by the ECRYPT NoE committee.
(The IPR statement also applies to Grain v1 and Grain-128).
The stream ciphers HC-128 and HC-256 are not patented and are royalty free. Anyone can use HC-128 and HC-256 free of charge. And I would like to update the ECRYPT Stream Cipher project when necessary.
The designers of the algorithm do not claim any IPR over it, and make it freely available for any purpose. To the best of our knowledge no one else has any relevant IPR either. We will update the ECRYPT stream cipher project coordinators if we ever discover any.
The original IP statements about MICKEY and MICKEY-128 remain valid for the version 2.0 ciphers.
Cryptico A/S currently has patents pending on Rabbit. The algorithm is provided royalty-free for non-commectical use. Licenses for commercial use may be obtained from Cryptico A/S.
My policy is that Salsa20 is free for everyone to use. I am not aware of any patents or patent applications covering Salsa20. I will update the ECRYPT Stream Cipher project when necessary.
The Sosemanuk cipher and the provided reference implementations are knowledge arising from a joint work carried out under the X-CRYPT Project, supported by the Ministère de l'éducation Nationale, de la Recherche et de la Technologie, France. Thus, Axalto S.A., France Télécom, Cryptolog International, the Institut National de Recherche en Informatique et en Automatique, the Centre National de la Recherche Scientifique, the Université de Versailles Saint-Quentin-en-Yvelines and the École Normale Supérieure have joint ownership of the Sosemanuk cipher and its reference implementations.
To our knowledge, the Sosemanuk cipher is not based on any licensed, patented or otherwise legally restricted existing work. The inventors of Sosemanuk wish that the Sosemanuk cipher and the provided reference implementations are and remain freely available, and may be used by anyone for any purpose, including commercial exploitation, without restriction. In particular, the inventors did not -- and do not intend to -- license, patent or otherwise restrict neither the Sosemanuk algorithm, nor any part of it, nor any implementation of it.
The inventors also undertake the task to update the Sosemanuk cipher as required by the ECRYPT Stream cipher project when necessary.
To the author's knowledge Trivium is not covered by any patent. Trivium is also free available for any use.