Authentication protection circuit and method of microprocessor at runtime

Abstract

The invention discloses an authentication protection circuit of a microprocessor at runtime. The authentication protection circuit comprises a microprocessor chip as master control, a group of communication memory chips and a group of series resistors, wherein power supplies of the communication memory chips and IO port multiplexing pins pass through the series resistors and then are connected to remaining idle general GPIO pins of the master control microprocessor chip in a main application circuit. The master control microprocessor chip can be any CPU kernel chip with a general IO interface and a connection mode that only one GPIO pin is connected with one path of single-port communication memory chip is adopted. The communication memory chips are the single-port communication memory chips. The authentication protection circuit can be combined with a special authentication algorithm which is inserted in the program aspect of the microprocessor at runtime, so that pirated copies ignorant of an original design idea generate a runtime error in certain circumstances and the target of indirectly combating piracy is achieved.

Description

technical field [0001] The invention relates to an authentication protection circuit, in particular to an authentication protection circuit and method when a microprocessor is running, which is used to prevent the circuit from being counterfeited or pirated. Background technique [0002] Under the background of domestic intellectual property technology infringement and protection is difficult and costly, and the cost of infringement and imitation is relatively low, but the crackdown by functional departments is limited, the original technology that has been invested in hard work is cracked and imitated at low cost from time to time. The protection of the rights and interests of technology original research and development urgently requires the development of auxiliary anti-piracy functions accompanying product functions. Contents of the invention [0003] One of the main purposes of the present invention is to provide a microprocessor run-time authentication and protection...

AI Technical Summary

Problems solved by technology

[0002] Under the background of domestic intellectual property technology infringement and protection is difficult and costly, and the cost of infringement and imitation is relatively low, but the crackdown by functional departments is limited, the original technology that has been invested in hard work is cracked and imitated at low cost from time to time. The protection of the rights and interests of technology original research and development urgently needs to develop the technology of auxiliary anti-piracy function accompanying product functions

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