diff --git a/src/Crypt.php b/src/Crypt.php
new file mode 100644
index 0000000..5ee3de5
--- /dev/null
+++ b/src/Crypt.php
@@ -0,0 +1,16 @@
+<?php
+
+namespace CraigPaul\Moneris;
+
+class Crypt
+{
+    const MAIL_TELEPHONE_SINGLE        = 1;
+    const MAIL_TELEPHONE_RECURRING     = 2;
+    const MAIL_TELEPHONE_INSTALLMENT   = 3;
+    const MAIL_TELEPHONE_UNKNOWN       = 4;
+    const AUTHENTICATED_E_COMMERCE     = 5;
+    const NON_AUTHENTICATED_E_COMMERCE = 6;
+    const SSL_ENABLED_MERCHANT         = 7;
+    const NON_SECURE                   = 8;
+    const NON_AUTHENTICATED            = 9;
+}
\ No newline at end of file