diff --git a/secure_token.js b/secure_token.js
new file mode 100644
index 0000000..32abccd
--- /dev/null
+++ b/secure_token.js
@@ -0,0 +1,16 @@
+const crypto = require('crypto');
+
+const secret = 'mysecret';
+const uri = '/my/uri';
+const expire = '1470055000';
+
+const md5 = crypto.createHash('md5');
+md5.update((secret + uri + expire), 'utf-8');
+const token = Buffer.from(md5.digest()).toString('base64').replace(/=|\+|\//g, (match) => ({
+  '=': '',
+  '+': '-',
+  '/': '_',
+}[match]));
+
+console.log(`http://www.example.org${uri}?st=${token}&e=${expire}`);
+