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Functional device and control apparatus

A function and controller technology, applied in the field of functional devices and control equipment, can solve problems such as tampering, damage to secret information, damage to security, etc.

Active Publication Date: 2017-08-18
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the signal itself input to the external interface is masked by highly skilled personnel, security may be compromised
For example, if an unauthorized person accesses an internal functional component connected to an external interface, there is a risk that secret information stored in the internal functional component may be tampered with or damaged

Method used

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  • Functional device and control apparatus
  • Functional device and control apparatus
  • Functional device and control apparatus

Examples

Experimental program
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Embodiment Construction

[0020] Hereinafter, description will be provided for each embodiment of the present invention.

[0021] figure 1 is an overall configuration diagram of the image forming system according to the present invention. The image forming system includes a control device 122 that includes one or more functional components or devices. The control device 122 includes a computer having a central processing unit (CPU) 101 , a read only memory (ROM) 103 and a random access memory (RAM) 104 . ROM 103 and RAM 104 are connected to CPU 101 via memory controller 102 and bus 121 . For convenience, the control bus, the data bus, and the local bus between any blocks are collectively represented as the bus 121 . Typical examples of bus 121 include PCI Express or "PCIe." The bus 121 is also connected to the image processing section 110 . In addition, the bus 121 is also connected to the LAN-IF controller 105 , the reader-IF controller 108 , the A-IF controller 111 , the SATA-host controller 113...

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PUM

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Abstract

The invention provides a functional device and a control apparatus. The functional device includes an external interface being able to access internal functional assemblies. The functional device which surely prevents tampering performed through an external interface in the functional device comprising an external interface which is accessible to an internal functional component is provided. In the functional device, a coupling controller is provided between an external Flash terminal which is an external interface and an internal Flash memory. The coupling controller physically blocks between the external Flash terminal and the internal Flash memory after a Fuse is disconnected except for a case where a certification result in a REG maintains validity. The certification result is validated only while current is carried.

Description

technical field [0001] The invention relates to a functional arrangement including a safety function and to a control device. Background technique [0002] There is generally an information processing device that can be connected to a network to install functional devices including security functions such as authentication processing and encryption processing for secret information. This security function is also required for peripheral devices connected to information processing equipment. For example, Japanese Patent Laid-Open No. 2011-123727 discloses a system in which an authentication device is inserted between a control device and a peripheral device. In this system, key identifiers and encrypted key data corresponding to peripheral devices are stored. When the control device detects an authentication command related to a request for use of a peripheral device, it specifies a key from identification information of the relevant device and authentication data included ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/44G06F21/60
CPCG06F21/44G06F21/606G06F2221/2103G06F21/85G06F21/78G06F21/60G06F21/70
Inventor 松本昭浩
Owner CANON KK