Wincor Nixdorf International Gmbh

Dspace Digital Signal Processing and Control Engineering Gmbh

Johannes Bloemer

Michael Nolte

Volker Krummel

Matthias Runowski

Karsten Kruegel

Gennadij Liske

Janek Jochheim

An encryption method is provided that has a software model of a technical system, the model including software components is encrypted by a public key and a decryption structure, wherein the latter includes definitions of component groups of the software model. The decryption structure is integrated at least partially into the encrypted software model. Correspondingly, in a decryption method according to the invention, via a secret key that likewise comprises definitions of component groups, only the particular component groups are decrypted whose definitions the secret key includes in agreement with the definitions of the encrypted software model. The definitions of the secret key can be extended after the fact by a key extension, so that additional component groups can be decrypted with an extended secret key.

Protection of software models

Method to secure the communication of components within self-service automats that are linked to each other by a bus system, having a transmitter and a receiver, characterized in that data are exchanged as tupels (C,A,R,N,Z) on the transport layer of the bus system where

System and method for secure communication of components inside self-service automats

Method to secure the communication of components within self-service automats that are linked to each other by a bus system, having a transmitter and a receiver, characterized in that data are exchanged as tuples (C, A, R, N, Z) on the transport layer of the bus system where

Growing community of inventors

Paderborn, Germany

Johannes Bloemer