PolarSSL is now part of ARM Official announcement and rebranded as mbed TLS.

FOSS License Exception

What is the FOSS License Exception?

This Free and Open Source Software ("FOSS") License Exception allows developers of FOSS applications to include PolarSSL with their FOSS applications. PolarSSL is typically licensed pursuant to version 2 (or later) of the General Public License ("GPL"). This exception permits distribution of PolarSSL with a developer's FOSS application licensed under the terms of another FOSS license listed below, even though such other FOSS license may be incompatible with the GPL.

FOSS License Exception Terms and Conditions

  1. Definitions.
    "Derivative Work" means a derivative work, as defined under applicable copyright law, formed entirely from the Program and one or more FOSS Applications.

    "FOSS Application" means a free and open source software application distributed subject to a license listed in the section below titled "FOSS License List."

    "FOSS Notice" means a notice placed by Brainspark B.V. in a copy of the PolarSSL library stating that such copy of the PolarSSL library may be distributed under Brainspark's or PolarSSL's FOSS License Exception.

    "Independent Work" means portions of the Derivative Work that are not derived from the Program and can reasonably be considered independent and separate works.

    "Program" means a copy of Brainspark's PolarSSL library that contains a FOSS Notice.

  2. A FOSS application developer ("you" or "your") may distribute a Derivative Work provided that you and the Derivative Work meet all of the following conditions:
    1. You obey the GPL in all respects for the Program and all portions (including modifications) of the Program included in the Derivative Work (provided that this condition does not apply to Independent Works);
    2. The Derivative Work does not include any work licensed under the GPL other than the Program;
    3. You distribute Independent Works subject to a license listed in the section below titled "FOSS License List";
    4. You distribute Independent Works in object code or executable form with the complete corresponding machine-readable source code on the same medium and under the same FOSS license applying to the object code or executable forms;
    5. All works that are aggregated with the Program or the Derivative Work on a medium or volume of storage are not derivative works of the Program, Derivative Work or FOSS Application, and must reasonably be considered independent and separate works.

  3. Brainspark B.V. reserves all rights not expressly granted in these terms and conditions. If all of the above conditions are not met, then this FOSS License Exception does not apply to you or your Derivative Work.

FOSS License List

License Name Version(s)/Copyright Date
Apache Software License 1.0 / 1.1 / 2.0
Apple Public Source License 2.0
Artistic license From Perl 5.0.0 and up
BSD License "July 22 1999"
Creative Commons Zero 1.0
European Union Public License (EUPL)1 1.0
GNU Affero General Public License (AGPL) 3.0
GNU General Public License (GPL) 3.0
GNU Library or "Lesser" General Public License (LGPL) 2.0 / 2.1 / 3.0
Internet Systems Consortium (ISC) License
Massachusetts Institute of Technology (MIT) License
Mozilla Public License (MPL) 1.1 / 2.0
nginx License http://nginx.org/LICENSE
X11 "2001"
Zlib/libpng License -

1 When an Independent Work is licensed under a "Compatible License" pursuant to the EUPL, the Compatible License rather than the EUPL is the applicable license for purposes of these FOSS License Exception Terms and Conditions.

If you want to use another FOSS license with PolarSSL, do not hesitate to contact us.