DEVICE AND METHOD FOR PROVIDING SECURE TRANSMISSION OF DATA BETWEEN A TRANSMITTER AND A RECEIVER
First Claim
1. A device for providing secure transmission of data between a transmitter and a receiver, comprising an interface circuit connected between the transmitter and the receiver, wherein the interface circuit comprises:
- a first input circuit arranged to receive data to be transmitted, the first input circuit comprising first programmable logic for transforming said data to be transmitted, the first programmable logic being constructed in the first input circuit by a first controller;
a first output circuit arranged to receive the data transformed by the first input circuit, the first output circuit comprising second programmable logic for retransforming said transformed data, the second programmable logic being built in the first output circuit by a second controller; and
a first comparator arranged to compare said data retransformed by the first output circuit and the data to be transmitted, the first programmable logic of the first input circuit being inverse and complementary to the second programmable logic of the first circuit output.
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Accused Products
Abstract
A device for providing secure transmission of data between a transmitter and a receiver includes an interface circuit that includes a first input circuit arranged to receive data to be transmitted, the first input circuit comprising programmable logic for transforming said data to be transmitted, the programmable logic being built in the first input circuit by a first controller; a first output circuit arranged to receive the data transformed by the first input circuit, the first output circuit comprising programmable logic for retransforming said transformed data, the programmable logic being built by a second controller, and a first comparator arranged to compare said data retransformed by the first output circuit and the data to be transmitted, the programmable logic of the first input circuit being inverse and complementary to the programmable logic of the first output circuit. Also disclosed is a method implemented by the device described above.
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14 Claims
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1. A device for providing secure transmission of data between a transmitter and a receiver, comprising an interface circuit connected between the transmitter and the receiver, wherein the interface circuit comprises:
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a first input circuit arranged to receive data to be transmitted, the first input circuit comprising first programmable logic for transforming said data to be transmitted, the first programmable logic being constructed in the first input circuit by a first controller; a first output circuit arranged to receive the data transformed by the first input circuit, the first output circuit comprising second programmable logic for retransforming said transformed data, the second programmable logic being built in the first output circuit by a second controller; and a first comparator arranged to compare said data retransformed by the first output circuit and the data to be transmitted, the first programmable logic of the first input circuit being inverse and complementary to the second programmable logic of the first circuit output. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for providing secure transmission of data between a transmitter and a receiver by means of an interface circuit connected between the transmitter and the receiver, said interface circuit comprising:
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a first input circuit arranged to receive data to be transmitted, the first input circuit comprising first programmable logic for transforming said data to be transmitted, the first programmable logic being constructed in the first input circuit by means of a first controller; a first output circuit arranged to receive the data transformed by the first input circuit, the first output circuit comprising second programmable logic for retransforming said transformed data, the second programmable logic for retransforming said transferred data being built in the first output circuit by means of a second controller; and a first comparator arranged to compare said data retransformed by the first output circuit with the data to be transmitted the method comprising the following steps; in said first input circuit, constructing by said first controller the first programmable logic by means of programming information; constructing by said second controller the second programmable logic in said first output circuit, said first programmable logic in said first input circuit and said second programmable logic in said first output circuit being inverse and complementary; transmitting data from the transmitter to the first input circuit; said first input circuit transforming the data in a manner dependent on the first programmable logic of the first input circuit; transmitting said transformed data to the first output circuit and retransforming the data in a manner dependent on the second programmable logic of the first output circuit; comparing the transmitter data with the retransformed data and activating a countermeasure if the comparison of the transmitter data with the retransformed data indicates a difference. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification