Abstract: The invention creates a mobile station comprising a mobile end device (ME) with a secured runtime environment (TEE) and a removable or firmly implemented security element (SE), with an end device send server (TEE-TSM) arranged in the security element (SE), which is arranged to send to the secured runtime environment (TEE) end device messages which can be received by the secured runtime environment (TEE). The end device messages are sent by a trusted service manager (SE-TSM), which is provided for the security element (SE), to the security element (SE), thereby higher efficiency being guaranteed at maintained security.

Abstract: A method is provided for installing a security-relevant portion of an application made available by an application provider in a security element of a terminal. The terminal requests the application from the application provider and receives the application. Subsequently, the received security-relevant portion of the application is transmitted to a trustworthy instance administrating the security element. The trustworthy instance subsequently installs the security-relevant portion of the application in the security element.

Abstract: The invention relates to a chip card with at least one application for which an implementation (4) and an entry (5) referring to the implementation (4) are present on the chip card (1). The inventive chip card is characterized in that a plurality of entries (5) referring to the same implementation (4) are present.

Abstract: The invention provides a method for programming a chip for a mobile end device, wherein, in a preparatory step, a serial number is programmed into the chip and thereafter, in a programming step, the serial number is verified and a programming of at least one further datum into the chip is only carried out if the serial number has been successfully verified. The serial number is verified here by means of a security module (HSM), while employing a secret information item stored in the security module (HSM) and different from the serial number.

Abstract: The invention relates to a chip card with at least one application for which an implementation (4) and an entry (5) referring to the implementation (4) are present on the chip card (1). The inventive chip card is characterized in that a plurality of entries (5) referring to the same implementation (4) are present.