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SECURE BUS SYSTEM AND bus system security method

A security bus and security technology, applied in the field of security systems, can solve problems such as power consumption and inefficiency

Inactive Publication Date: 2014-12-24
ANDES TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In other words, every time a bus transaction is received, the bus device has to perform this checking step (i.e., compare the security properties of the bus device with the bus master), which is inefficient and power-hungry

Method used

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  • SECURE BUS SYSTEM AND bus system security method
  • SECURE BUS SYSTEM AND bus system security method
  • SECURE BUS SYSTEM AND bus system security method

Examples

Experimental program
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Embodiment Construction

[0055] Some embodiments of the present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the application are shown. Indeed, the embodiments of the application may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will satisfy applicable legal requirements. Throughout, the same reference numerals represent the same elements.

[0056] figure 1 A schematic diagram of a safety bus system according to an exemplary embodiment of the present invention. In this embodiment, the secure bus system 100 includes a bus master (bus master) 110 , a bus interconnect structure (bus interconnect structure) 120 , a security control module (security control module) 130 and a bus device (bus device) 140 . Bus master 110 is coupled to bus interconnect 120 and may be a conventional bus...

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PUM

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Abstract

The invention discloses a secure bus system and a bus system security method. The secure bus system includes a bus interconnect structure, a bus master, a bus device and a security control module. The security control module determines a device security attribute for the bus device. When the master security attribute of the bus master or the device security attribute of the bus device has changed, the security control module determines a security permission flag related to the bus master. When the security control module receives a bus transaction from the bus master, the security control module determines whether a security violation condition happens between the bus master and the bus device according to the security permission flag. If the security violation condition happens, the security control module triggers a security violation handling process to further restrict accessibility of the bus master to the bus device.

Description

technical field [0001] The present invention relates to a safety system, specifically, to a safety bus system and a bus system safety method. Background technique [0002] In conventional bus systems, there is typically a security mechanism for determining whether a bus master is eligible to access (eg, send bus transactions to) a bus device. Generally, when a bus device receives a bus transaction from a bus master, the bus device checks the bus master by comparing its own security attribute or security level with the security attribute or security level of the bus master Whether the device is secure enough to access the bus device. In other words, each time a bus transaction is received, the bus device must perform this check step (ie, compare the security attributes of the bus device and the bus master), which is inefficient and power-hungry. SUMMARY OF THE INVENTION [0003] Accordingly, the present invention relates to a secure bus system and a bus system security me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/042G05B19/418H04L12/40
CPCG06F2221/2123G06F21/85
Inventor 赖吉昌
Owner ANDES TECH