K & H Bonapat Patentanwälte Koch · von Behren & Partner mbB

The invention relates to a computer implemented method for authentication of a prover device (P) containing a Physically Unclonable Function (PUF). The method comprises the steps: a) determining (51) enrollment data of a model (M) containing reliability information for individual PUF responses by reading out a specific response of the PUF of the prover device (P), e.g. by repeatedly measuring a specific PUF response under different operation conditions, until a predetermined accuracy of the reliability information is reached, and storing the enrollment data and the model (M) containing reliability information for individual PUF responses of the prover device (P) known to a verifier device (V) in a database unit (DB) of the verifier device (V), b) the verifier device (V) generates a number (N1) that can be used just once and sends (S3) it to the prover device (P), c) the prover device (P) applies (S4) a Cryptographic Hash Function (HF) to a conjunction (C) of a fuzzy secret output (SO) of the PUF and at least the number (N1) that can be used just once and sends (55) at least a part of an output (HFO) of the Cryptographic Hash Function (HF) to the verifier device (V), and d) the verifier device (V) determines (S7) a symbol-specific likelihood from the model (M) containing reliability information for individual PUF responses to derive a number of hypotheses (H1, H2, H3) for the secret output, wherein the hypotheses (H1, H2, H3) have different likelihoods and the number depends on a noise level of the PUF, a predetermined false rejection rate and/or a length of the secret output (SO), and the verifier device (V) applies the Cryptographic Hash Function (HF) to the conjunction (C) of every hypothesis (H1; H2; H3) for the secret output of the number of hypotheses (H1, H2, H3) and at least the number (N1) that can be used just once until at least a part of an output of the Cryptographic Hash Function (HF) of the verifier device (V) matches (S9) at least the part of the output (HFO) of the Cryptographic Hash Function (HF) received from the prover device (P) for a successful authentication. Other aspects of the invention are a computer program product which causes the computer to execute the method and a system for authentication of a prover device (P) containing a Physically Unclonable Function (PUF).

The invention is about a method and system of commissioning a passenger conveyor system after installation of at least one of its component. The system comprising a diagnostic unit (32) communicatively coupled to and configured to monitor the at least one installed component, and a control system configured to operate the system, wherein the method comprising the automated execution of the following steps for auditing the operation of the at least one installed component by means of a computing unit before taking the component into normal use. First, a running sequence of operation of the at least one installed component is started (40); Then acquiring (42) parametrized measurement data being receivable in relation to the condition and/or the operation of the at least one installed system component during the running sequence; Transferring (44) the measuring data to the diagnostic unit (32); Setting (46) one or more limit values for the parametrized measuring data as acquired and defining therewith a desired performance range of the at least one component; Determining by the diagnostic unit the extent to which the acquired measurement data extend the defined performance range beyond the one or more limit values; And issuing (48) an electronic report indicating the determination result.

The invention is about the realisation of a method of testing and monitoring the performance of a passenger conveying system (18). A data acquiring unit (30) is continuously gathering data of condition and/or performance of at least one system's component, a diagnostic unit (32) is communicatively coupled to and configured to process the data as gathered by the acquiring unit (30), and a forwarding unit for communicating data with a cloud-computing-net (22), the method comprising the semi-automatic or full-automatic execution of the following computer implemented steps of determining (40) by a remote computing unit (26) a running sequence of operation of the system (18) to execute at least one function of the system; Starting an operation action from the determined running sequence by means of the remote computing unit (26); Causing the acquiring unit (30) to acquire measurement data specified to the operation action; Causing a transfer of the acquired data from the acquiring unit (30) to the diagnostic unit (32); Causing a forwarding of processed data from the diagnostic unit (32) to the cloud-net (22); Retrieving the processed data from the cloud-net (22); Analysing condition data by processing the retrieved data from the cloud-net (22); Issuing (48) an analytical report that indicates the diagnosis result and making the report available for retrieval in the cloud-net (22).

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …