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Initialization control method and device of smart card

A control device and initialization technology, applied in the field of smart cards, can solve the problems of low security factor of smart cards, cumbersome code changes, and inability to modify at will, and achieve the effects of increasing security, saving development time, and shortening development cycles.

Inactive Publication Date: 2015-07-15
NATIONZ TECH INC
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0006] The purpose of the embodiments of the present invention is to provide a smart card download method and a smart card, aiming to solve the problem of using a read-only memory as the carrier of the COS program code in the prior art, resulting in a low safety factor of the smart card, being unable to modify at will, and changing the code is cumbersome.

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  • Initialization control method and device of smart card
  • Initialization control method and device of smart card

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Embodiment Construction

[0018] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0019] A smart card initialization control method and device, guides the user to write user COS data into the flash memory by solidifying the boot instruction data in the read-only memory, and uses the flash memory as the user COS data, encryption algorithm, or dynamic program The carrier, based on the rewritable characteristics of the flash memory, can write the algorithm itself according to the needs, without handing over the encryption algorithm and code to the chip manufacturer, which increases the security and makes it possible to modify the program of the smart card during the development proc...

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Abstract

The invention belongs to the communication technology, and provides an initialization control method and device of a smart card. The method comprises the following steps: curing bootstrapping data in a read-only memory; controlling the read-only memory to receive user COS (Chip Operating System) data; calling the bootstrapping data in the read-only memory; and writing the user COS data into a flash memory. The bootstrapping data is cured in the read-only memory to guide the user to write the user COS data into the flash memory, the flash memory is adopted to serve as a carrier of the user COS data, an encryption algorithm or a dynamic program; on the basis of the characteristic that the flash memory can be repeatedly written, an algorithm is written by self according to requirements, the encryption algorithm or codes do not need to be handed to a chip manufacturer, safety is increased, program revision becomes possible in a development process of the smart card so as to greatly shorten a development period, save development time and reduce development cost expenses, and the on-line upgrading and the on-line programming of the smart card are realized.

Description

technical field [0001] The invention relates to the technical field of smart cards, in particular to a smart card initialization control method and device. Background technique [0002] The smart card chip contains a microprocessor unit (CPU), a storage unit (RAM, ROM and EEPROM), and an input / output interface unit. Among them, the core of the smart card is an 8-bit (or higher) central processing unit integrated circuit chip, and the random access memory RAM of the storage unit is used to store the intermediate data in the operation process, and the data is lost after power off; the read-only memory The on-chip operating system COS (Chip Operating System) is solidified in the ROM. The monitoring program composed of COS organically combines all the data to form a file system, which can complete various specific functions; the erasable read-only memory EEPROM is used for storage and Some personal information related to the user and information about the issuing unit. [0003...

Claims

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Application Information

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IPC IPC(8): G06F9/445
Inventor 周凤琴资明祥
Owner NATIONZ TECH INC
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