Enhanced intelligent card and realization method thereof

Abstract

The invention provides an enhanced intelligent card and a realization method thereof as well as a method using the intelligent card to realize fingerprint recognition function. The intelligent card comprises: a standard contact panel; a first processor used as an intelligent card controller; a second processor connected with a peripheral that is to be integrated into the intelligent card, and used for interacting with and controlling the peripheral; and a gating switch connected among the standard contact panel, the first processor and the second processor and used for selectively connecting the first processor with the second processor or the standard contact panel according to a switch control signal, wherein the connecting interface and message format used when the first processor is communicated with the second processor are the same with those used when the first processor is communicated with the standard contact panel, and an open card operation system is operated on the first processor. According to the invention, more peripherals can be integrated into the card in the condition of not altering the card operation system, thus enhancing the functionality of the card.

Description

technical field [0001] The present invention generally relates to the technical field of smart cards, and more specifically relates to an enhanced smart card and its realization method, as well as a method for using the smart card to realize the fingerprint recognition function. Background technique [0002] Smart cards can also be called "integrated circuit cards" or "IC cards". Due to the use of today's most advanced semiconductor manufacturing technology and information security technology, it has many advantages over other types of cards. At present, as one of the symbols of the information society, smart card technology has formed an emerging technology industry involving many famous electronic giants in the world, and is increasingly popular in all aspects of modern economy and daily life. [0003] Smart cards can be divided into contact cards and contactless cards according to the type of chip embedded, and must follow the corresponding standards. Among them, ISO7816...

AI Technical Summary

Problems solved by technology

First, most smart card controllers generally do not have enough input and output (IO) pins to interface with peripherals

On the other hand, those conventional embedded controllers with enough IO pins generally do not have built-in tamper resistance like smart card controllers, i.e., contain light / frequency / voltage sensors to detect common attacks on smart cards

Therefore, they generally cannot be used as smart card controllers due to security concerns

Second, this approach requires substantial modifications to the traditional card operating system, which takes a considerable amount of time and requires a lot of effort

For the same reason as in the single-chip solution, since the open COS does not support interfaces other than ISO7816, even if the open COS is used in this method, it still cannot solve the problem of needing to modify the COS

Third, the connection between the smart card controller and the IO processor becomes a potential security breach

At this point, a hacker can easily find the connection and snoop on the message, by relaying the message to the smart card controller to completely bypass the fingerprint verification process, so the high security of the smart card cannot be reliably guaranteed

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