Update decrypt for 4.4
Change-Id: I8d5d7b6a49890e4707d70de8b429563de0d2ad99
diff --git a/crypto/scrypt/lib/README b/crypto/scrypt/lib/README
new file mode 100644
index 0000000..3bb211e
--- /dev/null
+++ b/crypto/scrypt/lib/README
@@ -0,0 +1,6 @@
+The source code under this directory is taken from the client for the
+Tarsnap online backup system (and released under the 2-clause BSD license
+with permission of the author); keeping this code in sync with the Tarsnap
+code is highly desirable and explains why there is some functionality
+included here which is not actually used by the scrypt file encryption
+utility.