US Patent 10021091 Secure authorization systems and methods

Systems and methods for secure user authentication are described. In certain embodiments, a client device such as a smartphone may be provisioned with a secure key and/or other secret information. The client device may be used to generate unique secure tokens and/or other credentials used in connection with an authentication processes. A user may provide the generated tokens and/or other credentials to a service provider in connection with a request to access a managed service. The validity of the generated tokens and/or other credentials may be verified by an authentication service in communication with the service provider.