fixed #7 by adding a second licence (BSD)

diff --git a/LICENCE.md b/LICENCE.md
index 4ac5d8307d0b77c428f32fa8eb01307d8480f847..d37df658c53d24c61e2123472254c653d0c99caf 100644 (file)
--- a/LICENCE.md
+++ b/LICENCE.md
@@ -1,6 +1,43 @@
+Monocypher is dual-licensed.  Choose whichever you want.
+
+The first licence is derived from the GNU all permissive licence,
+minus the obligation to preserve the copyright notice, and itself.
+The other is a regular 2-clause BSD licence.
+
+
+Licence 1
+---------
+
 Copying and distribution of the code, with or without modification,
 are permitted in any medium without royalty.  This code is offered
 as-is, without any warranty.
 
-(Simply put, do whatever you want with the code.
- I'm not responsible if anything goes wrong.)
+
+Licence 2 (2-clause BSD)
+------------------------
+
+Copyright 2017 Loup Vaillant
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+1. Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the
+   distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.