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Processor program safety protection device and method

A safety protection device and a technology of safety protection, applied in the field of processor program safety protection device, can solve the problems of system safety, the lack of safety protection of processor programs, etc., so as to prevent leakage of secrets, facilitate system improvement and upgrade, and ensure safety Effect

Inactive Publication Date: 2014-01-29
SICHUAN JIUZHOU ELECTRIC GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a processor program security protection device and method for the system security problems caused by the lack of security protection of the processor program existing in the prior art

Method used

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  • Processor program safety protection device and method
  • Processor program safety protection device and method
  • Processor program safety protection device and method

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Embodiment Construction

[0026] The present invention will be further described below in combination with specific embodiments and accompanying drawings.

[0027] A processor program security protection device disclosed in the present invention, such as figure 1 As shown, it includes a processing device 1, a password card 2, and the processing device is connected to the password card; the processing device 1 includes: a first processor 11, a first memory 13 (such as a FLASH memory), a second memory 12 (such as SDRAM memory), the first interface chip 14, the power supply module 15, the first processor 11 is respectively connected with the first memory 13, the second memory 12, and the first interface chip 14; the chips of the processing device 1 and the encryption card 2 are respectively connected The power supply module 15 is powered by the power supply module 15; the encryption card 2 includes: a second processor 21, a third memory 22 (such as a FLASH memory), a second interface chip 23, a man-machin...

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Abstract

The invention relates to the field of encryption and discloses a processor program safety protection device, which comprises processing equipment and a password card, wherein the processing equipment is connected with the password card; the processing equipment comprises a first processor, a first storage, a second storage, a first interface chip and a power supply module; the first processor is respectively connected with the first storage, the second storage and the first interface chip; all chips of the processing equipment and the password card are respectively connected with the power supply module; and the first interface chip and the second interface chip are connected through an asynchronous serial port, the first storage is a nonvolatile storage and the second storage is a volatile storage. The invention further discloses a processor program safety protection method. By using the device and method in the invention, an application program ciphertext of the processor is valueless if an opposite side acquires the application program ciphertext under a condition of not acquiring a decryption key and a decryption program.

Description

technical field [0001] The invention relates to the field of encryption devices, in particular to a processor program security protection device and method. Background technique [0002] Many functions in military electronic systems and commercial electronic equipment such as land, sea, and air identification friend or foe, communication and navigation, electronic countermeasures, and missile tracking are implemented by processors that execute specific applications. Typically, the processor may be a digital signal processor (DSP), a microcontroller such as an ARM processor, a field programmable gate array (FPGA), a PowerPC, or a general-purpose processor used in a PC. [0003] Usually the application program is placed in the external FLASH, and it will be loaded into the internal processor or external RAM memory to run when the power is turned on. However, directly storing the plain text of the program in FLASH allows anyone to directly access the application program and st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F21/12G06F21/51G06F21/50
Inventor 何敏
Owner SICHUAN JIUZHOU ELECTRIC GROUP