Abstract: A very efficient authentication and authorization check in n:m relationships is possible with a method for checking the entitlement of a user of a telecommunication terminal (1) to a service, whereby an access device (4) on a telecommunication network (3) obtains at least one certificate and a proof of identity (10) from the telecommunication terminal (1), whereupon NMT (5) together with a certification device (7) carries out a check of whether the certificate giving the identity is valid and has a positive status and whether particular authorization may be obtained from complementary certificates. Should the above be the case, a secret (for example a session key) is transmitted (15) to the access device (4) which is also sent (15, 16) to the telecommunication terminal (1, 2), encoded with at least the public key. The access device (4) is then activated with a policy corresponding to the rights of the telecommunication user.

Abstract: A method and a device for data processing are provided comprising a first instance comprising at least one local trusted unit (LTU) and a local trust manager (LTM), the method comprising the step: The local trust manager provides a policy related information to the at least one local trusted unit and/or to a second instance.

Abstract: A method for enabling a first party to provide a second party with personalized digital content includes at a network unit: in response to receiving a request from a first party, the request including an identifier identifying a second party, retrieving identity credentials of the second party; and transmitting the identity credentials of the second part to a first party or to a content providing system; and in a content providing system: in response to receiving: a) an identifier from the first party, the identifier identifying digital content in a digital content storage, and b) the identity credentials of the second party, personalizing digital content using the identity credentials, the personalizing adapted to enable the second party to reproduce the digital content but to prevent any unauthorized party to reproduce it; and delivering the personalized digital content to the first party.

Abstract: An ordering scheme is described, for example an ordering and payment scheme for mobile communication devices. The ordering scheme enables an Internet shop or another service provider to issue binding offers to a mobile communication device or the like and to receive an acceptance of the offer from the mobile device. The acceptance is encrypted using a private key of mobile device and the offer may be encrypted using a private key of the service provider. The service provider liaises with a payment broker and a charging system for controlling the transfer of funds from the user to the service provider. An identity management system may be provided to control access to the modules of the ordering scheme.

Abstract: A method and a device for data processing are provided comprising a first instance comprising at least one local trusted unit (LTU) and a local trust manager (LTM), the method comprising the step: The local trust manager provides a policy related information to the at least one local trusted unit and/or to a second instance.

Abstract: Digital right management systems are technically constructed for protecting and carrying out wishes of a copyright holder such that the digital content is connected in a cryptographic and unique manner to any particular device and/or data carrier. Use of the digital content on other devices of the person who acquires rights is only possible after previous registration by the copyright holder. The person who acquires rights is enabled to manage the acquired rights thereof themselves on the electronic data object without instructing the intervention of a central copyright holder. This is accomplished by the person who acquires the rights creating partial amounts of the user rights having individual user rights. The digital content can be used, respectively, in the periphery of the created partial amounts of the individual user rights.

Abstract: A power maximizing circuit for a stepper motor employing a switching regulator that conducts current to a variable voltage supply until a predetermined voltage is attained. The predetermined voltage is varied to achieve resonance compensation.

Abstract: A closed loop resonance compensation method and circuit for a stepper motor stabilizes the stepper motor control system while operating in the mid-frequency range. The stepper motor stabilization method and means corrects for mid-frequency resonance errors by deriving a velocity error signal from the total current in the motor windings and uses this signal, through feedback to the source of clock pulses, to correct the short term rotor velocity with respect to the stator field.