Smart IC card data checking method and system

Abstract

The invention provides a smart IC card data checking method and system. The method comprises the steps that a user terminal sends personalized data and an MAC key to a card writing terminal; the card writing terminal converts the personalized data into a personalized APDU instruction; the card writing terminal sends the MAC key and the personalized APDU instruction to a smart IC card through a secure channel; the smart IC card stores the personalized data and the MAC key according to the personalized APDU instruction; the smart IC card conducts MAC computing on the stored personalized data and a state code generated when the personalized data is stored to obtain first MAC data and generates feedback information according to the first MAC data; the card writing terminal generates a feedback file after acquiring the feedback information and sends the feedback file to the user terminal; and the user terminal conducts consistency comparison on the feedback information in the feedback file to obtain comparison information. The system provides execution modules for the method. According to the smart IC card data checking method and system, the condition that the data stored in the smart IC card is inconsistent with original data due to the fact that the personalized data is tampered can be prevented.

Description

technical field [0001] The invention relates to the technical field of smart cards, in particular to a smart IC card data checking method and a system applying the method. Background technique [0002] When personalizing smart IC cards (Intelligent Card), especially when batch personalization processing, the personalization data needs to be transmitted from the customer side (i.e., the card issuer) to the smart card manufacturer, and then personalize through the data processing program and the production workshop Programs and other processes to complete the personalization of smart IC cards. In the process of personalization, any link may cause data changes, such as data tampering by hackers during transmission, misoperation of data during data processing and personalization, etc., resulting in the data actually written into the card being different from the original data. Inconsistent. Moreover, the modification of some data does not affect the normal personalization and ...

AI Technical Summary

Problems solved by technology

[0004] However, whether it is within the smart card manufacturer or on the customer side, due to the limitation of the card inspection equipment and the professionalism of the testers, it is generally difficult to cover all the data in the test, especially when some sensitive data is involved. For ciphertext, the data is written into the card by trans-encryption when writing the card, and then tested after personalization. In a batch of cards, some cards have problems, which are difficult to be detected by random inspection, and will directly affect the quality of the entire batch of cards

Images