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Flash safety starting method and data card

A secure boot and flash memory technology, applied in the field of data cards, can solve the problems of increased upgrade costs and incompatible boot mechanisms, and save upgrade costs and time.

Inactive Publication Date: 2012-01-25
HUAWEI DEVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the non-secure boot mechanism, the above-mentioned authentication process is not required, and the configuration table is not required to store the storage location of the mirrored data and confidential data in the flash memory. Different productions use different methods for programming, so that the data card with the secure boot mechanism and the data card with the non-secure boot mechanism cannot use the same production line for programming, and the two boot mechanisms are not compatible with each other, making the current When upgrading from a non-secure boot mechanism to a secure boot mechanism, a large modification of the upgrade tool is required, which will increase the cost of the upgrade

Method used

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  • Flash safety starting method and data card
  • Flash safety starting method and data card
  • Flash safety starting method and data card

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Embodiment Construction

[0072] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts all belong to the protection scope of the present invention.

[0073] figure 1 It is a flow chart of Embodiment 1 of the version generation method according to the present invention. As shown in the figure, the method includes the following steps:

[0074] Step 101, write the length value of the image data into the head byte of the image data to generate complete image data.

[0075] Specifically, a batc...

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Abstract

The invention provides edition generating and edition programming method and device, a safety starting method and a data card, wherein the edition generating and edition programming method comprises the steps of: writing length values of mirror image data into a lead byte of the mirror image data to generate integral mirror image data; carrying out digital signature on the integral mirror image data to generate a mirror image signature; inserting the mirror image signature into the tail part of the integral mirror image data; and inserting a digital certificate and a certificate signature of the mirror image data into the tail part of the mirror image signature. In the embodiment f the invention, different updating tools are not needed to be designed for different mechanisms, thereby being beneficial to saving updating cost and time.

Description

technical field [0001] The embodiment of the present invention relates to a method and device for version generation and version programming, a secure startup method and a data card. Background technique [0002] Existing data cards, such as wireless network cards, usually adopt a secure boot mechanism and a non-secure boot mechanism. Among them, the secure boot mechanism means that in order to prevent the image data and confidential data in the data card from being maliciously rewritten, a secure boot process is adopted through the data when the data card is started. The following briefly describes the existing secure boot principle: [0003] Use the root public key (Root Public Key) pre-stored in the chip read-only memory (Read Only Memory, ROM) of the data card to authenticate the certificate signature of the first image data; after the authentication is passed, take out the digital certificate ( The image public key carried in Certificate Authority (abbreviation: CA) au...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K17/00G06F21/00G06F21/33
Inventor 潘时林
Owner HUAWEI DEVICE CO LTD