Siemens Aktiengesellschaft

Siemens Nixdorf Informationssysteme Aktiengesellschaft

Axel Pfau

Rainer Falk

Hans Aschauer

Markus Heintel

Wolfgang Klasen

Steffen Fries

Kai Fischer

Daniel Schneider

Johannes Zwanzger

Georg Trummer

Franz Sperl

Christian Peter Feist

Dominik Merli

Stefan Pyka

Anton Sebastian Huber

Joachim Koppers

Bernhard Quendt

Klaus Mueller

Hildegard Jost

Thomas Hueske

A method for achieving a security function for a security control device for controlling a device or an installation, including: a) providing at least one first partial secret that is stored in a basic control device, b) providing at least one second partial secret that is stored in a security module, c) combining the at least one first and second partial secret to form an overall secret, required to achieve the security function, within the time period in which the basic control device interacts with the security module via the first and second coupling interfaces, and d) disguising the combined overall secret outside the time period.

Methods and apparatuses for achieving a security function, in particular in the environment of a device and/or installation controller

Provided is a method for achieving a security function for a security control device for controlling a device or an installation, including: a basic control device, and a security module and having the following steps of a) providing at least one first partial secret which is stored in the basic control device, b) providing at least one second partial secret which is stored in the security module, c) combining the at least one first partial secret and the at least one second partial secret in order to achieve the security function, wherein the at least one first partial secret is broken down into sections of a predefinable size and the set of sections is gradually combined with the at least second partial secret by means of a calculation rule, which can be processed within a predefinable period during the execution of the calculation rule according to the size and set.

Various embodiments disclosed help to implement integrity verification of sensors and signaling lines of the sensors. According to various embodiments, this is achieved by performing an analysis of a noise signal on the signaling line and transmitting check data indicative of a result of the analysis.

Verification of sensor data

A retrieval device for secure retrieval of optical information for a first device from a light source of a second device includes, a housing made from at least one material which is opaque for the light emitted from the light source. The housing is arranged to contain the light from at least a part of the light source. The retrieval device includes an attachment adapted to detachably attach the housing to the second device, a light receiver arranged to receive optical information from the light source, said light receiver located inside the housing, and a connector arranged to transfer an optical and/or electrical signal from the light receiver to the first device.

Retrieval device for authentication information, system and method for secure authentication

A modular security control device for controlling an apparatus or an installation includes a basic control apparatus which is configured such that an apparatus or an installation which is at least connectable to the basic control apparatus is at least controllable via a sequence of a control program in the basic control apparatus, and includes a security module which is configured to provide or perform a cryptographic functionality for the basic control apparatus, where the security module is connected to the basic control apparatus by a data connection via a data interface, the basic control apparatus is configured to interact with the security module to achieve a security function of the security control device, and where the basic control apparatus is configured to query an identity and/or authenticity of the security module.

Modular security control device

Provided is a method for the secure, computer-aided execution of program instructions of an application, including the following method steps. The method includes a step of switching on a learning mode of an execution environment. The method includes a further step of performing the application in the execution environment while the learning mode is switched on, wherein program instructions of the application are performed for a selected predetermined application scenario and the execution environment assigns a first application scenario-specific validity information to the performed program instructions. The method includes a step of switching on a working mode of the execution environment, wherein, in the working mode, the execution environment checks the first validity information of the program instructions, and wherein the execution environment executes the program instructions as a function of their validity information.

Method and execution environment for the secure execution of program instructions

Method and apparatus for preventing inadmissible deviations from the runtime protocol of an application in a data exchange system. The data exchange system has, for example, a terminal T and a chip card K. For various applications (for example, automatic teller unit, computer access), basic functions B stored in the chip card K are processed in a sequence respectively defined in a protocol. Since the basic functions B are called in proceeding from the terminal T, the data integrity could be deteriorated by intentional modifications of the protocol sequence at the terminal T. By storing the allowable protocols in a control list STL and establishing a status memory area ZS on the chip card K, it becomes possible to monitor the protocol execution on the chip card K independently of the terminal T. The respective status Z of an application is fixed in the status memory area ZS. All basic function designations Bn permitted for a status Z are deposited in the control list STL.

Method and apparatus for preventing inadmissible deviations from the

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Munich, Germany

Axel Pfau