crypto-ext is distributed under the following licenses: - Apache License Version 2.0 - Creative Commons Attribution 4.0 International - ISC License - GNU Lesser General Public License - MIT License These are included as LICENSE-APACHE, LICENSE-CC-BY-4.0, LICENSE-ISC, LICENSE-LGPL-3.0 and LICENSE-MIT respectively. You may use this software under the terms of any of these licenses, at your option.