*/
extern meshlink_handle_t *meshlink_open(const char *confbase, const char *name, const char *appname, dev_class_t devclass);
+/// Open or create a MeshLink instance that uses encrypted storage.
+/** This function opens or creates a MeshLink instance.
+ * The state is stored in the configuration directory passed in the variable @a confbase @a.
+ * If the configuration directory does not exist yet, for example when it is the first time
+ * this instance is opened, the configuration directory will be automatically created and initialized.
+ * However, the parent directory should already exist, otherwise an error will be returned.
+ *
+ * The name given should be a unique identifier for this instance.
+ *
+ * This function returns a pointer to a struct meshlink_handle that will be allocated by MeshLink.
+ * When the application does no longer need to use this handle, it must call meshlink_close() to
+ * free its resources.
+ *
+ * This function does not start any network I/O yet. The application should
+ * first set callbacks, and then call meshlink_start().
+ *
+ * @param confbase The directory in which MeshLink will store its configuration files.
+ * After the function returns, the application is free to overwrite or free @a confbase @a.
+ * @param name The name which this instance of the application will use in the mesh.
+ * After the function returns, the application is free to overwrite or free @a name @a.
+ * @param appname The application name which will be used in the mesh.
+ * After the function returns, the application is free to overwrite or free @a name @a.
+ * @param devclass The device class which will be used in the mesh.
+ * @param key A pointer to a key used to encrypt storage.
+ * @param keylen The length of the key in bytes.
+ *
+ * @return A pointer to a meshlink_handle_t which represents this instance of MeshLink, or NULL in case of an error.
+ * The pointer is valid until meshlink_close() is called.
+ */
+extern meshlink_handle_t *meshlink_open_encrypted(const char *confbase, const char *name, const char *appname, dev_class_t devclass, const void *key, size_t keylen);
+
/// Start MeshLink.
/** This function causes MeshLink to open network sockets, make outgoing connections, and
* create a new thread, which will handle all network I/O.