diff --git a/extra/sodium/authors.txt b/extra/sodium/authors.txt
new file mode 100644
index 0000000000..8e1955f8e1
--- /dev/null
+++ b/extra/sodium/authors.txt
@@ -0,0 +1 @@
+Alexander Ilin
diff --git a/extra/sodium/ffi/ffi.factor b/extra/sodium/ffi/ffi.factor
new file mode 100644
index 0000000000..6a1ba89755
--- /dev/null
+++ b/extra/sodium/ffi/ffi.factor
@@ -0,0 +1,12 @@
+! Copyright (C) 2017 Alexander Ilin.
+! See http://factorcode.org/license.txt for BSD license.
+USING: alien alien.libraries alien.syntax combinators system ;
+IN: sodium.ffi
+
+<< "sodium" {
+    { [ os windows? ] [ "libsodium.dll" ] }
+    { [ os macosx? ] [ "libsodium.dylib" ] }
+    { [ os unix? ] [ "libsodium.so" ] }
+} cond cdecl add-library >>
+
+LIBRARY: sodium
diff --git a/extra/sodium/summary.txt b/extra/sodium/summary.txt
new file mode 100644
index 0000000000..c2b7fea495
--- /dev/null
+++ b/extra/sodium/summary.txt
@@ -0,0 +1 @@
+The Sodium crypto library