KR100296278B1 - Smart card and historical character structure method thereof - Google Patents

Abstract

PURPOSE: A smart card and a method for making its historical character are provided to automatically recognize a card type in one smart card application program by making historical character of ATR(Answer-to-Reset), and automatically execute a command and a function of each card. CONSTITUTION: A smart card stores card characteristics, card operation sequence, ATR(Answer-to-Reset), and a transfer protocol, etc. The smart card fields in historical characters(T1-Tk) of ATR by a predetermined byte. The fields are used to indicate a card manufacturer name(Vender-ID), a card or chip operation system(COS), and a version number. The historical characters are of at least 4 bytes, record the Vendor-ID, the COS, and a version number in a field over 4 bytes, and records a self-information in a remaining field.

Description

SMART CARD AND HISTORY CHARACTER STRUCTURE {SMART CARD AND HISTORICAL CHARACTER STRUCTURE METHOD THEREOF}

The present invention relates to a smart card, and more particularly, to a smart card and a method of constructing a historical character thereof.

In general, a smart card is a COB (micro-computer) with a microprocessor, a chip operating system (COS), an EEPROM, and a security algorithm on a plastic card of the same size and thickness as a credit card. It is a card embedded in the form of a chip on board, which is highly regarded as an important means of the electronic money era due to its excellent security and convenient possession.

Many manufacturers have produced various types of smart cards, and in recognition of the need for international standards, they have enacted the ISO 7816 series, the standard for smart cards.

Therefore, each company applies the ISO 7816 standard to the cards it produces, and adds its own features.

The ISO 7816 series defined standards for various parts of IC cards, such as part1, part2, ...

That is, part 1 of the ISO 7816 series defines the physical characteristics of the card, part 2 defines the location and size of the COB terminals, and part 3 defines the electrical signaling and communication protocols.

Referring back to the above part3, it describes the electrical characteristics of the card contact, the card operation procedure and Answer-to-Reset (ATR), and the transmission protocol according to the type of protocol.

Here, the ATR value is a value that is output in response to the reset from the card when an electrical reset is applied to the card. The ATR value is a parameter representing the physical characteristics of the integrated circuit (IC) of the card and the logical characteristics of the exchange protocol. Consists of

In general, the ATR value is the initial character TS, the format character TO, the interface characters TAi, TBi, TCi, TDi, i = 1 to n, and the historical character (as shown in the configuration diagram of FIG. 1). T1 to Tk) and a check character (TCK).

Communication between the card and the card interface device is performed using the above characters and the parameters represented by the characters.

When the value of the initial character TS is '3F', an inverse convention is performed. When the initial character TS is '3B', a direct convention is performed.

Cards manufactured by each company follow the ISO 7816 standard.In particular, historical characters such as T1, T2, ..., Tk are provided by the manufacturer in relation to the card such as the card manufacturer and the chip name inserted into the card. I use it for information I want.

However, in the related art, a card manufacturer recognizes a smart card type by randomly using a historical character having an ATR value without a common standard specification for a historical character representing a card type and basic information about the inside of the card. There is a problem that is impossible.

In other words, the information that follows the industry common format that only recognizes that the card being used is an ISO 7816 card and that it can perform standard commands, but also know the type of card or the type of chip operating system (COS) Not included at all.

In addition, when developing and controlling an application and an interface device using a card, a compatibility problem according to a manufacturer is not considered when a card of a single company or only a standard command is used. However, it is difficult to accommodate all kinds of cards manufactured by various companies in one smart card application.

In order to improve this problem and develop an application that accepts all cards manufactured by various companies, it is important to know which card is manufactured by which company.

Therefore, the present invention provides a historical character of ATR (Answer-to-Reset) value to store information indicating the manufacturer and type of the card in the historical character of the ATR value in the industry common standard standard in order to improve the conventional problem. The purpose of the present invention is to provide a smart card and a method of constructing a historical character thereof, which are designed to automatically recognize an arbitrary card type in one smart card application program and execute commands and functions according to each card.

1 is an exemplary view showing the configuration of an ATR value typically included in a smart card.

2 is an exemplary view showing the configuration of a format character in FIG.

3 is an exemplary view showing a configuration of a historical character according to the present invention.

The present invention provides a card manufacturer name (Vendor-ID), card or chip operating system for the historical character (T1 to Tk) that is not specified in detail in the ATR value included in the standard specification of the smart card in order to achieve the above object. (COS) and a field for indicating a revision number (Version Number) and the like is characterized in that the standardized implementation.

The historical characters (T1 to Tk) are configured to have at least four or more to allocate basic essential information.

Hereinafter, the present invention will be described in detail with reference to the drawings.

2 and 3 are block diagrams showing an embodiment of the present invention, as shown therein, with 4-bit information and history on the presence or absence of interface characters (TAi, TBi, TCi, TDi, i = 1 to n). In the ATR value included in the standard specification of the smart card, including a format character TO representing a 4-bit value for the number of curl characters T1 to Tk, the historical characters T1 to Tk are card manufacturers. A predetermined byte for indicating the Vendor-ID, the card or chip operating system (COS), and the revision number is configured.

The historical characters T1 to Tk are composed of at least four or more.

The historical characters T1 to Tk are configured to allocate basic essential information to 4 bytes, and to the other 11 bytes, the company itself allocates arbitrary information as usual.

Referring to the operation and effect of the embodiment of the present invention configured as described above are as follows.

Initial character TS, format character TO, interface character TAi, TBi, TCi, TDi, i = 1 to 1 in the ATR value sent out by the smart card by applying an electrical reset to the current smart card. n), the historical characters (T1 to Tk) and the check character (TCK) all follow part 3 of ISO 7816. Among them, the historical characters (T1 to Tk) are fields used by the manufacturer arbitrarily. Industry standard standards can be defined.

As shown in the example diagram of FIG. 2, the format character TO includes information about the presence or absence of interface characters TAi, TBi, TCi, TDi, and i = 1 to n in bits b8 to b5. In the standard specification, the number of historical characters T1 to Tk is allocated to (b4 to b1) by 4 bits, respectively.

At this time, whether to transmit the interface characters TAi, TBi, TCi, TDi, i = 1 to n is determined according to the values of the bits b8 to b5 of the format character TO, and bit b5 is '1'. If the character TAi, i = 1 to n is transmitted, and if the bit b6 is '1', the character TBi, i = 1 to n is transmitted, and if the bit b7 is '1', the character ( When TCi, i = 1 to n is transmitted and bit b8 is '1', characters TDi, i = 1 to n are transmitted.

Since four bits are allocated to the format character TO to indicate the number of the historical characters T1 to Tk, the maximum number of the historical characters T1 to Tk can be designated up to 15.

A field standard is proposed to include information such as a card manufacturer Vendor-ID, a type of a card or a chip operating system (COS), a revision number, and the like in the historical characters T1 to Tk.

In this case, suppose that 2 bytes are assigned to the card manufacturer name (Vendor-ID), 10 bits are assigned to the type of the card or chip operating system (COS), and 6 bits are assigned to the version number. A total of 65536 companies can be represented, a total of 1024 types of card or chip operating system (COS) can be represented, and a revision number (Version Number) can be expressed up to 64 levels.

Of course, each number of bits can be properly adjusted according to the situation at the time of standard establishment.

That is, the historical characters T1 to Tk may determine the standard so as to allocate basic essential information for 4 bytes and the remaining 11 bytes to a field for providing information by the company itself as before.

In other words, the number of historical characters T1 to Tk should be at least four in the ATR value of the new format implemented in the present invention.

Therefore, when the information is recorded in the smart card in the format implemented by the present invention, when the card interface device reads the ATR value transmitted from the card by the electrical reset, the card reads the first four bytes of the historical characters T1 to Tk therein. It recognizes the card manufacturer, type of card, revision number, etc., and executes additional commands and functions according to each case defined in the form of a table in the program in advance.

As described in detail above, the present invention standardizes the structure of fields not defined in detail among smart card information fields manufactured by various companies so that a card manufactured by any company can be automatically recognized by one application program. This makes it easy to develop applications.

In addition, since the present invention is to change the structure of the field that is not specified in detail in the world standard, it is possible to port information at a low cost without changing other existing information fields.

Therefore, in the future of the electronic money era, smart cards are getting more popular, and when a lot more companies manufacture smart cards, the developers of application programs using smart cards according to the present invention simply read specific fields of the cards. This makes it easy to use all the features of a card manufactured by a specific vendor.

Claims (4)

A smart card that stores information such as card characteristics, operating procedures and Answer-to-Reset (ATR), transmission protocol, etc., includes the card manufacturer Vendor-ID, card or chip operating system (COS), and revision number ( And a field for indicating a version number by allocating a predetermined byte to the historical characters (T1 to Tk) of the ATR value. Interface characters (TAi, TBi, TCi, TDi, i = 1 to n), historical characters (T1 to Tk), and format characters (TO) indicating the presence or absence of the interface characters and the number of historical characters. In the method of configuring the ATR value of the smart card, the historical characters T1 to Tk represent a card manufacturer Vendor-ID, a card or chip operating system (COS), and a revision number. A method of constructing a historical character of a smart card, characterized in that the smart card is standardized by allocating a predetermined byte for a field to bet. The method of claim 2, wherein the historical characters (T1 to Tk) are composed of at least 4 bytes or more. The information of claim 2, wherein the historical characters T1 to Tk comprise information of a card manufacturer Vendor-ID, a card or a chip operating system (COS), a revision number, and the like, in a field of at least 4 bytes. How to configure the historical character of the smart card, characterized in that configured to display the information provided by the company itself in the remaining fields.

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