Patent attributes
A client computing device accesses license and authentication management services provided by a license and authentication management server, which communicates with an authentication server and an application server. The client computing device authenticates a user and validates a license for a client application (e.g., a signature application) executing on the client computing device. The license and authentication management server provides an authentication API configured to manage communications between the client application and an authentication server to authenticate a user of the client application. The license and authentication management server also provides a subscription API configured to manage communications between the client application and an application server to validate a license associated with the client application.