diff --git a/CREDITS b/CREDITS
index e69de29..f8c5b61 100644
--- a/CREDITS
+++ b/CREDITS
@@ -0,0 +1,14 @@
+The Cryb project includes code written by Christophe Devine for the
+XySSL project and published under a variant of the 3-clause New BSD
+License.  Christophe Devine has graciously granted the Cryb project
+permission to reuse this code under the 3-clause New BSD License.
+
+The Cryb project includes code written by Colin Percival and published
+under the 2-clause Simplified BSD License.  Colin Percival has
+graciously granted the Cryb project permission to reuse this code
+under the 3-clause New BSD License.
+
+The Cryb project includes code written by Dag-Erling Smørgrav for the
+University of Oslo.  The University of Oslo has graciously granted the
+Cryb project permission to reuse this code under the 3-clause New BSD
+License.