CPUCPU and logic encryption double-purpose smart card and its data synchronization method

Abstract

The invention discloses a CPU and logic encryption dual-purpose intelligent card as well as relevant data synchronous methods. Prior CPU and logic encryption dual-purpose intelligent cards cannot resolve data synchronous problem for the two purposes. To resolve the problem, the technical schemes of the CPU and logic encryption dual-purpose intelligent card and relevant data synchronous methods provided by the invention are as follows: A CPU command process module controls an access control module for a logic encryption storage area, and acquire data from the logic encryption storage area to send into a data format conversion module; the data format conversion module transmits the data to a CPU control storage area; then, the CPU command process module controls the CPU control storage area, so that data in the CPU card can be sent into the access control module in the logic encryption storage area through the data format conversion module; the access control module for the logic encryption storage area can write the data from the CPU card into the logic encryption storage area. The invention is suitable for being used in the field of intelligent cards.

Description

technical field [0001] The invention relates to a smart card data storage device and an internal data synchronization method, mainly relating to a CPU and logic encryption dual-purpose smart card and a data synchronization method thereof. Background technique [0002] Both logic encryption card and CPU card are a kind of IC card. Compared with the logical encryption card, the CPU card has the advantages of fast processing speed, high security, and great flexibility, and is gradually replacing the logical encryption card. However, logical encryption cards have been used in many projects. If CPU cards are used directly to replace logical encryption cards, all existing logical encryption card readers and terminals will have to be replaced. The cost of doing so is too high to be acceptable. In order to solve this problem, some chip manufacturers provide a new CPU chip: adding a logic encryption circuit and a logic encryption storage area. The card packaged with this chip can b...

AI Technical Summary

Problems solved by technology

When the logical encryption card and the CPU card are used as a common application, the corresponding data in the two storage areas should be consistent, so as to ensure that a correct state is maintained in the logical encryption card terminal environment and the CPU card terminal environment respectively, but currently Still can't solve the problem of data synchronization between the two

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