A method for authenticating, by a trusted component, a user of a desktop appliance to a remote machine includes executing, by a desktop appliance, a user interaction component, responsive to receiving a secure attention sequence from a user. The user interaction component receives authentication credentials associated with the user. The desktop appliance transmits, to a broker service, the received authentication credentials. The broker service authenticates the user, responsive to the received authentication credentials. The broker service transmits, to a remote machine, authentication data associated with the received authentication credentials. The remote machine authenticates the user, responsive to the received authentication data. The remote machine provides, to the desktop appliance, access to a resource requested by the user. In another aspect, a trusted component provides, to a user of a desktop appliance, access to secure desktop functionality provided by a remote machine.