Signal processing system

A signal processing and signal technology, applied in transmission systems, digital transmission systems, security communication devices, etc., can solve problems such as loss of sales and reduced brand image
CN102948113AInactive Publication Date: 2013-02-27MITSUBISHI ELECTRIC CORP
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
MITSUBISHI ELECTRIC CORP
Publication Date
2013-02-27
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

A signaling route (350) of a PUF (Physical Uncloneable Function) circuit is configured in each device (301), the signaling route (350) of each device (301) is connected by a connecting route (360) to form a circulation route, and an arbiter (303) is connected at the end of the circulation route, wherein a signal is circulated in the circulation route from a device (1) to a device (3), the arbiter (303) monitors the signal flowing in the circulation route and generates an output signal reflecting the inherent property of the circulation route on the basis of monitoring results, and the verification of identity among the combination of a plurality of devices is enabled by verifying the output signal.
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Description

technical field

[0001] The present invention relates to security devices such as authentication and encryption, and relates to a device for generating a device-specific identifier required for authentication, a secret key required for encryption, and the like. Background technique

[0002] In semiconductor devices such as ASIC (Application Specific Integrated Circuit) and FPGA (Field Programmable Gate Array, Programmable Gate Array), even if the same circuit is mounted on the same type of device, device characteristics such as gate delay will vary. It is different in each device, so there is a phenomenon that each device obtains a different output.

[0003] The circuit or its technology that produces such a phenomenon is called Physical Unclonable Function (physical unclonable function), Physical Uncloning (physical unclonable) technology, etc., and is expected to be applied to applications such as authentication and encryption.

[0004] In addition, in this specification, ...

Claims

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