Method for realizing all-in-one function of single intelligent card

Abstract

The invention discloses a method for realizing all-in-one function of a single intelligent card. Tree directory structures of a plurality of cards are combined, directory file structures respectively representing different cards are written into the independent space of the same intelligent card, different MFs represent payment (or application) environments of various industries and various card issue parties, the names of the MFs are specified as the names of the payment (or application) environments of the various industries and various card issue parties, attributes such as space, an instruction set, communication interface and protocol types, safety access right and the like required by application of each industry are configured to a corresponding MF, and the function of storing the plurality of cards (namely all-in-one function) can be realized on the single CPU intelligent card.

Description

technical field [0001] The invention relates to a method for realizing the function of an all-in-one card on a single smart card. Background technique [0002] With the development of information technology, the application fields of IC cards continue to expand, and the market holdings of IC cards continue to increase, especially in the fields of telecommunication cards, social security cards, public transportation cards, campus cards, Internet bar cards, and access control cards. The number of cards and systems used is impressive and continues to expand. IC cards are divided into memory cards and CPU cards. In the market, CPU cards will be used more and more after the cost gradually decreases due to their advantages of high security, strong functions, and high data reliability. [0003] With the accelerated development of the country's informatization process, people's demand for information consumption is increasing day by day, and the application environment of IC cards ...

AI Technical Summary

Problems solved by technology

However, the problem with this method is that there is only one MF in the card, and the card issuer with the management authority of this MF will lock or delete all DDFs under the MF when performing management operations such as card locking or deleting cards, making it applicable Environment can no longer be accessed to the detriment of other independent card issuers

In fact, this method can only be applied to occasions where there is only one card issuer, and cannot achieve the multi-card integration requirements of independent card issuance and secure access by multiple card issuers

Images