JP2000040138A - Ic card and authentication system therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently judge an IC card holder with high reliability, to add a security function to information data possessed in an IC card as needed and to make even a handicapped person able to perform utilization. SOLUTION: This system 100 is provided with an information data storage memory area, a registration data storage memory area for storing fuzzy data expressed by the fuzzy vectors of an input pattern for authenticating the IC card holder as registration data and a data processor 105 for computing the similarity degree of the fuzzy data for input collation for which input data inputted from the outside through the interface of an IC card main body are converted to the same form as the registration data and the fuzzy data of the registration data and inputting and outputting the information data through the interface 103 in the case that the similarity degree is larger than a prescribed value.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an IC card having an excellent security function and an IC card authentication system capable of determining a valid holder of the IC card.

[0002]

2. Description of the Related Art When using a card on which information data such as a bank deposit amount, a health care value, a personal identification number, etc. are recorded,
If the card is lost, there is a risk that a third party other than the authorized card holder may acquire the card and use it illegally. Conventionally, in order to prevent such unauthorized use of the card, a method of comparing the cardholder's self-written signature written in advance on the card surface with the holder's signature, a more reliable and electrically high-speed determination An authentication system using an IC card for processing has been proposed. For example, Japanese Patent Laid-Open No. 1-2
Japanese Patent Application Publication No. 24888 discloses a reading means for reading handwriting data of a self-written signature stored in a memory of an IC card, a converting means for converting a signature signed on a tablet into identification data, and the reading means. The sign verification terminal includes comparison means for comparing the handwriting data read by the above with the identification data converted by the conversion means, and determining whether or not the signature is signed by a valid card holder. Have been.

[0003]

However, an apparatus for performing authentication using handwriting data stored in an IC card as disclosed in Japanese Patent Application Laid-Open No. 1-224888 has the following problems. there were. Since the comparison operation is performed based on highly redundant handwriting data written in the tablet, a large amount of memory is required, and the judgment result is likely to be erroneous, and the reliability is poor. Since the IC card itself does not have a security function for protecting the information data stored in the memory, the third party can use the IC card.
This information data can be easily tampered with or read out using a C card reader or the like. For this reason, it is difficult to maintain the reliability of the system using the IC card. Since only the handwriting data is subjected to the IC card holder determination, the handwriting of the holder can be imitated and used. In addition, there are cases where it is difficult for a person with a disability in the eyes or hands to use an IC card. The present invention has been made in view of such circumstances, and an IC
An IC card which can efficiently determine a card holder with high reliability, can add a security function to information data held in the IC card when necessary, and can be used by persons with disabilities. An object of the present invention is to provide an IC card authentication system.

[0004]

According to the present invention, there is provided a semiconductor device comprising:
The described IC card includes an information data storage memory area for storing information data such as a deposit amount and a health management value relating to the IC card holder, and a handwriting, voice, fingerprint, and the like for authenticating the IC card holder. The input pattern is divided into each component, converted into a fuzzy vector composed of membership grades representing the characteristics of each component, and fuzzy data expressed by a set of the fuzzy vectors of the number of the components as registration data. A registered data storage memory area to be stored, input matching fuzzy data obtained by converting input data input from the outside through an interface of the IC card body into the same format as the registered data, and fuzzy data of the registered data. When the similarity is calculated and the similarity is greater than a predetermined value, the information data is transmitted via the interface. A data processing unit for inputting and outputting data is provided. 3. The IC card according to claim 1, wherein the data processing device converts input data of the input pattern to be authenticated into fuzzy data in the same format as the registration data. A conversion processing unit that collates the fuzzy data converted by the input data conversion processing unit with the fuzzy data of the registered data, calculates a similarity thereof, and if the similarity is greater than a predetermined value, authenticates an IC card holder; A fuzzy association unit that outputs a signal; and a ROM that stores a program that controls reading and writing of the information data stored in the information data storage memory area based on the IC card holder authentication signal. . I according to claim 3
The C card has an information data storage memory area for storing information data such as a deposit amount and a health management value relating to the IC card holder, and input patterns such as handwriting, voice, and fingerprint for authenticating the IC card holder. Is divided into each component, converted into a fuzzy vector composed of membership grades representing the characteristics of each component, and fuzzy data expressed by a set of the fuzzy vectors of the number of the components is stored as registration data. Reading and writing of the information data stored in the information data storage memory area are controlled based on a registered data storage memory area and an IC card holder authentication signal input from outside via an interface of the IC card body. An input / output control unit.

According to a fourth aspect of the present invention, there is provided an IC card authentication system which divides an input pattern such as a handwriting, a voice, and a fingerprint for authenticating an IC card holder into each component, and a member representing the feature of each component. A registration data storage memory area for converting into a fuzzy vector composed of ship grades and storing fuzzy data represented by a set of the fuzzy vectors of the number of the constituent elements as registration data;
An information data storage memory area for storing information data such as a deposit amount, a health care value, etc. relating to a cardholder, and input data input from the outside via an interface provided in an IC card body in the same format as the registration data. When the fuzzy data for input matching and the fuzzy data of the registered data match within a predetermined range, an IC card holder authentication signal is output via the interface. An IC card including a data processing device for inputting and outputting the information data;
An input device for converting the input pattern to be authenticated into input data such as coordinate values, and an IC card reader for inputting and outputting the information data by inputting the input data obtained from the input device to the interface And a lighter.

According to a fifth aspect of the present invention, there is provided an IC card authentication system for authenticating an IC card holder and an information data storage memory area for storing information data such as a deposit amount and a health management value relating to the IC card holder. Input pattern such as handwriting, voice, fingerprint, etc., is divided into each component, converted into a fuzzy vector composed of membership grades representing the characteristics of each component, and a set of the fuzzy vectors of the number of the components is used. A registration data storage memory area for storing the expressed fuzzy data as registration data;
An input / output control unit that externally reads and writes the information data stored in the information data storage memory area based on an IC card holder authentication signal input from the outside via an interface of the IC card body. An IC card provided with the input device for inputting the input pattern for determining the IC card holder;
Fuzzy data of the registration data obtained through an interface of a C card and fuzzy data for input collation obtained by converting input data of the input pattern obtained through the input device into the same format as the registration data. A data processing device that determines the degree of similarity with the IC card holder and outputs the IC card holder authentication signal. The information data held in the IC card is transmitted to an external information processing device such as a host computer or a terminal via an interface. An input / output IC card reader / writer.

According to a sixth aspect of the present invention, in the IC card authentication system according to the fourth or fifth aspect, the data processing device converts the input data into fuzzy data in the same format as the registration data. An input data conversion processing unit that performs the conversion, and compares the fuzzy data converted by the input data conversion processing unit with the fuzzy data of the registered data, calculates the similarity, and when the similarity is larger than a predetermined value, the IC. A fuzzy association unit for outputting a cardholder authentication signal. The authentication system for an IC card according to claim 7, wherein the input pattern includes handwriting data that is input by handwriting, and the input device includes: Is provided with a liquid crystal touch panel on which the handwriting is written. An IC card authentication system according to an eighth aspect of the present invention is the IC card authentication system according to the seventh aspect, wherein the handwriting data includes the handwriting pressure data added to the liquid crystal touch panel at the time of input. .
The authentication system for an IC card according to the ninth aspect is the fourth aspect.
9. The authentication system for an IC card according to any one of items 1 to 8, wherein the input pattern includes voice data, and the input device includes a voice input device such as a microphone. According to a tenth aspect of the present invention, in the IC card authentication system according to any one of the fourth to ninth aspects, the input pattern includes data of a personal identification number input from a keyboard or a liquid crystal touch panel. A collation is performed with the registration data of the personal identification number, which is included in the registration data storage memory area in advance.

[0008] An IC card is an integrated circuit (Integrated Circuit) inside a plastic card.
t), which generally has a built-in memory and microprocessor,
In addition, they are roughly classified into three types including those including analog circuits and the like. An IC card interface is a card reader such as an IC card reader and an IC inserted into the card reader.
It is a part that serves as a contact point for inputting and outputting data to and from the card.
A non-contact type that inputs and outputs data via magnetism or the like can be applied.

The input pattern is a sequence of numbers representing the coordinate positions of elements such as handwriting and the intensity of voice, etc., which are ordered in time series or space. Such a sequence can be divided into a predetermined number, and a set of membership grades representing the characteristics can be set for a vector of a component defined by a start point and an end point of each divided element. This will be described below in the case of handwriting input data input to the liquid crystal touch panel, but the same processing is performed for audio signals input by a microphone or image data such as fingerprints read by a scanner or the like. Can be applied. The input data of the handwriting is a sequence of m points (P ₁ to P ₁ ) acquired at predetermined time intervals input to the liquid crystal touch panel with a touch pen.
Coordinate position (x, y) obtained by digitally processing the handwriting consisting of P _m ) and normalizing the handwriting to fall within a predetermined range.
And a touch signal (t) indicating the presence / absence of the touch pen touching the liquid crystal touch panel surface. Each of these vector elements corresponds to, for example, (x ₁ , y ₁ , t ₁ ), (x ₂ , y ₂ , t ₂ ),... Corresponding to the handwriting point sequence (P _{1 to} P _m ).
And (x _m , y _m , t _m ).

[0010] The component vector (element vector) is
The handwriting on the xy coordinate plane whose size is standardized is represented by n
This is a vector that is divided into a plurality of divided line segments, and is defined by the coordinate positions of the start point and the end point of each of the divided line segments. For example, the i-th element vector is represented by P _i -P _{i + 1} . The number of divisions n is a number for dividing an input pattern composed of handwriting, voice, fingerprint, and the like into a minimum necessary number of element vectors. be able to. For example, it is desirable to set the number of divisions n for handwriting characters to be a number that is one greater than the maximum number of known kanji strokes.

The membership grade corresponding to the angle between the direction of the element vector and the reference axis (x-axis) is obtained by specifying the direction value of the element vector or the angle θ such as the east-west north-south direction on the xy coordinate plane. It can be defined by a numerical value or a sequence obtained in association with the membership function corresponding to the direction. A fuzzy vector is obtained by dividing a series of input data into, for example, n element vectors, and dividing each of them into p pieces, for example, numbers corresponding to four reference directions (p =
4) is converted into a set of membership grades μ, and vector-format data (μ ₀ , μ ₁ ,
μ ₂ ,... μ _pn-1 ). The operation for setting a membership grade or a fuzzy vector in a predetermined format based on the input data is referred to as fuzzy conversion. The present invention attempts to determine the similarity between the registered data composed of such a membership grade pair and the input data of the input pattern to be subjected to the fuzzy-transformed data determination in the same format as that of the input pattern. Things.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention. Here, FIG. 1 is a block diagram of an IC card authentication system according to a first embodiment of the present invention, FIG. 2 is a block diagram of a calculation unit in the IC card authentication system, and FIG. 3 is an IC card authentication system. FIG. 4 is a block diagram of an output storage unit and a card data input / output device connected thereto, FIG. 4 is a block diagram of a fuzzy association unit in the IC card authentication system, and FIG.
FIG. 6 is a block diagram of an IC card authentication system according to a third embodiment of the present invention, and FIG. 7 is an external view of the IC card authentication system according to the third embodiment. FIG. 8 is a block diagram of an IC card authentication system according to a fourth embodiment of the present invention.

As shown in FIG. 1, in an IC card authentication system 10 according to a first embodiment of the present invention, fuzzy conversion is performed from handwritten data of an IC card holder, which is an example of an input pattern. An IC card 13 having a memory 11 for storing registration data in advance and an interface 12 for exchanging data with the outside;
A card data input / output device 14 for reading and writing data through the interface 12 into which a C card 13 is inserted, and a handwriting character input device 16 (input device) having a liquid crystal touch panel 15 for inputting a handwriting to be determined. And input matching data obtained by fuzzy conversion into the same format so that the input data of the handwriting obtained through the handwritten character input device 16 can be compared with the registered data. A data processing device 17 for judging the degree and outputting an IC card holder authentication signal, and a handwriting or IC card 13 input to the liquid crystal touch panel 15
And a display device 18 such as a CRT for displaying the determination result. Note that the IC card reader / writer in the present embodiment refers to an integrated unit including the handwritten character input device 16, the data processing device 17, the card data input / output device 14, and the display device 18.

The IC card 13 has a thickness of 0.5 to 5 mm,
Memory 11 comprising an integrated circuit in a rectangular plastic plate having a length of about 80 to 100 mm and a width of about 40 to 70 mm
Is a type of storage medium in which an interface 12 having a plurality of terminals is provided on the surface of a card. It should be noted that such an interface 12 may be of a magnetically responsive type that can exchange data with the interface board of the card data input / output device 14 in a non-contact state. The registration data stored in the registration data storage area of the memory 11 of the IC card 13 in advance is
Create it as follows. First, each element vector is set by decomposing the handwriting data of the owner himself / herself in chronological order. Next, a set of membership grades indicating the direction of each element vector and the like are determined, and registered data can be configured by a set of these ordered membership grades. The information data of the IC card holder is stored in the information data storage area of the memory 11. The IC card 13 reads and writes information data stored in an information data storage memory area based on an IC card holder authentication signal input from the data processing device 17 via the interface 12 of the IC card body. May be provided as necessary.

The card data input / output device 14 is an input / output device capable of writing data to the memory 11 and reading data held in the memory 11 via the interface 12 of the inserted IC card 13. The handwritten character input device 16 is a device capable of acquiring numerical data (input data) corresponding to xy coordinates on the liquid crystal touch panel 15 in time series from an input pattern such as a handwriting written on the liquid crystal touch panel 15. . If necessary, the liquid crystal touch panel 15 may be provided with a pressure sensor for detecting the magnitude of the pen pressure, and the pen pressure data on the xy coordinate points may be added to the numerical data. The handwritten character input device 16 also has a function of displaying the handwriting to be written on the liquid crystal touch panel 15 simultaneously with the output of the numerical data, so that a person who inputs by handwriting can directly check the input state with eyes. Has become. The display device 18 is a device for displaying a determination result of the similarity output from the fuzzy association unit 21 and data such as handwriting input to the liquid crystal touch panel 15 on a CRT screen or the like.

The data processing unit 17 includes an input processing unit 19 for converting the numerical data from analog to digital into input data, a membership grade by fuzzy conversion from the input data, and a card data input / output unit. 14 to the memory 11 from the IC card 13.
And an input data conversion processing unit comprising an operation unit 20 for acquiring and outputting registered data held in the input data, and comparing the corresponding membership grades of the input data and the registered data with each other to finally determine the similarity between the two. And a fuzzy association unit 21 for judging.

Hereinafter, the operation unit 20 in the data processing device 17 which is a main part of the present embodiment will be described in detail with reference to FIG. As shown in FIG. 2, the calculation unit 20 includes an input storage unit 31 for sequentially storing handwriting input data, which is an example of an input pattern input via the input processing unit 19, and a handwriting touch signal (t). , An element vector calculating unit 32 for obtaining an element vector defined by a start point position and an end point position, and a membership grade corresponding to an angle of the element vector from a reference axis. A membership grade operation unit 33 for calculating a set, an output storage unit 34 for sequentially storing the membership grade sets output from the membership grade operation unit 33 as fuzzy vectors, and controls the overall operation. And a control unit 35.

The input storage unit 31 has first and second random access memories (RAMs) for storing two sets of independently provided xy coordinates and a touch signal (t).
, And first and second switching circuits provided before and after the storage unit. Then, the handwriting input data is stored in one of the first and second storage units by a switching signal input to the first switching circuit together with the handwriting input data. Further, the input data stored in the respective storage units can be selected and taken out by the second switching circuit via the switching signal from the control unit 35. Since two sets of storage units are independently provided as described above, when one storage unit is busy, the other storage unit can be used. For example, when the input data of the first handwriting and the input data of the second handwriting to be input next are input to the first and second storage units, respectively, and when the processing of the input data of the first handwriting is completed. First, the data stored in the first storage unit is cleared. Then, the input data of the third handwriting may be stored in the first storage unit, and the processing of the input data of the second handwriting held in the second storage unit may be performed during this time.

As shown in FIG. 2, for example, the element vector calculation unit 32 calculates a number VPK of element vectors per image based on the number of handwriting strokes KAKU and a VPK calculation circuit 50 based on the touch signal. A KSA and KEA calculation circuit 51 for calculating addresses KSA and KEA in a storage unit in which the start and end positions of the image are stored;
An element vector is set based on K, KSA, and KEA, and addresses SA, E at the start and end positions of the element vector are set.
A and an EA calculation circuit 52 for obtaining A are provided.

The membership grade operation unit 33 includes a DX and DY calculation circuit 53 for obtaining a difference in the x-axis and y-axis directions from respective coordinate data corresponding to the start position and the end position of the element vector, and DX and DY. Calculation circuit 5
And a membership grade calculation circuit 54 for calculating membership grades μ _{0 to} μ ₃ corresponding to the four reference directions of the element vector based on the data obtained in step ₃ .

The output storage unit 34 connected to the card data input / output device 14 stores four membership grades μ _{0 to} μ ₃ corresponding to the element vectors obtained by dividing the input data of the handwriting as shown in FIG. RA for memorizing
M60, 61, 62, and 63, and a RAM 64 for storing a control signal from the control unit 35, a determination signal, and the like. The IC card 13 inserted into the card data input / output device 14 has the memory 11. Memory 1
As shown in Figure 3 to 1, the flash memory for input in advance stores a membership grade μ ₀ ~μ ₃ corresponding to the registration data for determining authenticity of the handwriting input 65, 66, 67, 68 are provided. Data is exchanged via the respective interfaces 12, 22 of the IC card and the card data input / output device 14. The flash memories 65, 66, 67, and 68 are electrically erasable in an electrically erasable EEPROM (Electrically Eraser).
ble Programmable Read-Onl
y Memory), also called flash PROM.
With a simple configuration of one element per bit, the unit cell area is usually smaller than that of a RAM, and information is not lost even when the power is turned off, and writing and erasing can be performed tens of thousands of times. In this case, 5
A voltage of 10 volts or 10 volts is applied to hold the stored contents. The control unit 35
Transmits an operation start signal and an operation stop signal to each of the input storage unit 31, the element vector operation unit 32, and the membership grade operation unit 33 to control the operation states thereof, and to set the membership grade corresponding to the element vector. μ _{0 to} μ ₃ can be transmitted to the fuzzy association unit 21.

The fuzzy association unit 21 connected to the arithmetic unit 20 described above compares the membership grades μ _{0 to} μ ₃ corresponding to the respective element vectors of the input data of the handwriting and the registered data as shown in FIG. Circuits 70, 71, 72, and 73, and each of the comparison circuits 70, 71,
The smaller value (MIN1 to MIN1) calculated by comparison at 72 and 73
4), the sum of the larger values (MAX1 to 4) is added, and the smaller values are added up (ΣMIN), and the larger value is added up (ΣMAX). , A small value accumulator circuit ($ MIN circuit) and a large value accumulator circuit 75 ($ M
AX circuit) and the ratio (ΣMIN / ΣMAX) between the small value cumulative value (ΣMIN) and the large value cumulative value (ΣMAX)
And an individual similarity calculation circuit 76 for calculating the individual similarity Sc.

When the input data of the handwriting is compared and discriminated on a character-by-character basis, the element vectors can be classified and set to the following three kinds of vectors as necessary. Real vector: The count number of the touch signal is the number of strokes k,
This is a vector that sets the number of divisions N for each image and is determined from the coordinates of the start and end of each divided element. Transition vector: A vector defined by the end position of each image and the start position of the next image separately from the actual vector. Start and end vector: a vector including both a start vector defined by the start position of the first image and the start position of the i-th image and an end vector defined by the start position of the first image and the end position of the i-th image It is.

As shown in FIG. 4, the fuzzy associating unit 21 includes a real vector similarity calculating circuit 77 for calculating a cumulative value ΣSc corresponding to the real vector, the transition vector, and the start and end vector, respectively. A circuit 78 and a start and end vector similarity calculation circuit 79,
A real vector similarity averaging circuit 80 for averaging the respective cumulative values (S _ST , S _TR , S _SE ) outputted in connection with the similarity calculating circuits 77, 78, 79; A degree averaging circuit 81 and a start and end vector similarity averaging circuit 82 are provided. Further, the fuzzy association unit 21 has three types of average similarities (S ' _ST , S') output from the similarity averaging circuits 80, 81, 82, respectively.
_TR , S ′ _SE ) by multiplying them by weighting factors, and adding
Overall similarity calculation circuit 83 for calculating overall similarity
A determination circuit 84 for comparing the total similarity S output corresponding to these registered data with a predetermined reference value to determine pass / fail, calculation start, calculation stop, data latch, character address designation , A control unit 85 for transmitting and receiving signals such as determination start and determination stop to and from each circuit and controlling each circuit. And
The control unit 85 includes a determination signal from the arithmetic unit 20,
The number of strokes (KAKU) and the processing completion signal are input, and the associative end signal is sent to the display device 18 after the determination result is output. The actual vector, the transition vector, and the start and end vector are configured so that input data of handwriting is classified according to a control signal output from the control unit 85. Thus, the fuzzy association unit 21 calculates the similarity of the input data based on the registered data,
Pass / fail of the input data is determined. When a voice or fingerprint is processed as an input pattern, the pass / fail of the input data is determined by using the individual similarity output from the individual similarity arithmetic circuit 76, thereby determining that the individual similarity arithmetic circuit 76 is acceptable. Each circuit 77 between the circuits 84
It is also possible to omit -83.

The case in which the IC card authentication system 10 according to the first embodiment is applied to a bank account and the like will be described below. Here, the IC card 13 holds personal information such as the deposit amount of the bank user, the date of withdrawal of the deposit, and the like. The registered handwriting of the authorized holder of the IC card 13 is used as registration data for identifying the authorized holder of the IC card 13. (Sign) data is held. On the other hand, IC
The IC card authentication system 10 except for the card 13 is located in the bank. When a bank user withdraws a deposit at a bank counter, the IC card 13 is inserted into the card data input / output device 14 of the IC card reader / writer. Then, the user directly inputs his / her handwritten signature into the liquid crystal touch panel 15 of the handwritten character input device 16 using a touch pen or the like. Then, the data processing device 17 compares the data of the registered signature of the authorized holder (registered data) held in the IC card with the data of the handwritten signature (input verification data) input from the handwritten character input device 16. The similarity is calculated, and the result of the pass / fail judgment is displayed on the display device 18. If the determination result is “conformity”, the IC card holder authentication signal is output from the fuzzy association unit 21 to the IC card 13, and data is written to the information data storage memory area of the memory 11 of the IC card 13, Data can be read, and bankers can withdraw necessary deposits,
These deposit data can be sent to the memory 11 or a host computer in a bank (not shown) and recorded. On the other hand, if the result of the determination is “unsuitable”, access to the host computer or IC card is denied. That is, IC card holders who are not authorized holders cannot use this IC card. In this way, unauthorized use of the IC card is regulated, and the security of the entire system is guaranteed.

Next, an IC card authentication system 100 according to a second embodiment of the present invention will be described. Since the IC card authentication system 100 includes the IC card 101 configured by integrating the functions of the data processing device 17 and the IC card 13, the portions having the same functions are denoted by the same reference numerals. And a detailed description thereof will be omitted. IC as shown in FIG.
The card authentication system 100 receives an IC card 101 capable of comparing input data of an input pattern input from the outside with registered data and determining the authenticity thereof, and an input pattern of a voice to be subjected to data determination. A voice input device 102 (an example of an input device), a display device 18 for displaying a determination result, and input data from the voice input device 102 are transferred to the IC card 101 via the interface 103, and are transmitted from the IC card 101. An IC card reader / writer 104 for sending acquired determination result data to the display device 18 is provided.

The IC card 101 has a registration data storage memory area for storing registration data consisting of an ordered set of membership grades corresponding to each divided element of input data by voice, which is an example of an input pattern.
A memory 11 having an information data storage memory area for storing information data relating to a card holder, and input collation fuzzy data obtained by converting input data input via the interface 103 into the same format corresponding to registration data Or calculating the similarity between the fuzzy data for input collation directly input via the interface 103 and the registered data, and permitting input / output of information data via the interface 103 when the similarity is larger than a predetermined value. And a data processing device 105. The data processing device 105 includes an input data conversion processing unit including an input processing unit 19 and a calculation unit 20, and a fuzzy association unit 21, which have the same functions as those in the IC card authentication system 10. Have. That is, the data processing device 105 is obtained by integrating the input processing unit 19, the arithmetic unit 20, and the fuzzy association unit 21 into an IC chip. The IC card 101 having the data processing device 105 and the memory 11 can hold and operate data with power supplied via the interface 103 or an internal power supply (not shown).

Next, the IC card authentication system 10
A description will be given of an individual health management method in a hospital or the like using 0. The card holder stores, for example, registration data consisting of voice data when his / her name is uttered in the registration data storage memory area of the memory 11 in a fuzzy-converted predetermined format. Is stored in the information data storage memory area. When inputting registration data or information data,
It can also be performed via the C card reader / writer 104 or using an information processing device having an interface for connecting to an IC card prepared exclusively for registration.

The card holder makes a medical examination at the hospital,
When the information data of the health management value including the blood pressure, pulse, body temperature, blood sugar level, gene sequence, and X-ray fluoroscopic images of each part obtained at that time is written in the information data storage memory area in the memory 11 of the IC card 101, First, it is necessary to determine whether the card holder is a legitimate holder. This determination operation is performed by inserting the IC card 101 into the IC card reader / writer 104, and
This is performed by comparing the registered data stored in the data input device with the input collation data of the voice input via the microphone of the voice input device 102 using the data processing device 105, and calculating the similarity between the two. By performing such a determination operation, it is possible to prevent the own data from being erroneously rewritten by the data of another person and to prevent the leakage of the personal health management value to the outside. Further, since the data processing device 105 and the memory 11 for holding data are integrally disposed in the IC card 101, even if a third party acquires such an IC card 101,
It is almost impossible to input voice data that matches the registered data, and it is not possible to read information data held in the memory 11.

Next, an IC card authentication system 200 according to a third embodiment of the present invention will be described. As shown in FIG. 6, the IC card authentication system 200
An IC card 201 for storing and holding information data of a C card holder and signature data (registration data) for identifying an IC card holder, and an IC card for reading and writing information data and the like when the IC card 201 is inserted. Reader / writer 202 and IC card reader / writer 202
A terminal 203, which is an example of an external information processing device for exchanging data with the terminal 203, a bank connected to the terminal 203,
A host computer 204 which is an example of an external information processing apparatus disposed in a hospital or the like. The IC card reader / writer 202 has a central control unit (CPU) 205 for taking in information data, signature data, and the like of the IC card 201 and performing necessary calculations. An IC card slot 206 into which the IC card 201 is inserted is connected to the CPU 205 via an IC card interface 207. The IC card reader / writer 202 is provided with a liquid crystal touch panel 208 for inputting handwriting input data, a data processing device 209 for acquiring and processing handwriting input data from the liquid crystal touch panel 208, and a data processing device 209. And a memory 21 for holding input data between the
0. The CPU 205 includes a ROM 211 for storing an IC card control program, a program for exchanging data with the data processing device 209, and an IC.
A ROM 212 for storing a card ID collation program is connected. Further, the CPU 205 is provided with an RS232C standard interface 213 for connecting to the terminal 203 and exchanging data. The IC card reader / writer 202 has a changeover switch 2 for designating any one of a write mode (registration mode) and a read mode (authentication mode) for the IC card 201.
14, the control signal is input to the data processing device 209 and the CPU 205, respectively.

The IC card reader / writer 202 into which the IC card 201 is inserted has a compact appearance as shown in FIG. 7, and the signature written on the liquid crystal touch panel 208 is compared with the signature registered in the IC card 201. Can be easily done on the spot.
As a result, by imitating the signature on the back of the card like a conventional credit card or the like, it is not possible to easily impersonate the authorized holder, and the security of the system is enhanced.

Hereinafter, the IC card authentication system 20 will be described.
The operation method of 0 will be described. Here, IC card 2
The signature data (registration data) for identifying the IC card holder stored in the registration data storage memory area on the memory No. 01 is stored in a fuzzy converted format, and the collation operation with the input data is performed in this format. The processing is performed using the data. Hereinafter, (A) signature data (input data) input to the liquid crystal touch panel 208
In the following, a procedure for performing the authentication will be described, and then (B) a procedure for registering the signature data as the registration data will be described. (A) When authenticating the input signature data Using the changeover switch 214, the operation state of the CPU 205 is designated to the authentication mode. 2. The IC card 201 is inserted into the IC card slot 206 and set. 3. CPU 205 of IC card reader / writer 202
When the setting state of the IC card 201 is confirmed by
The data of the OM 211 is loaded on the memory of the CPU 205, and the IC card control program is executed. 4. The IC card reader / writer 202 reads registration data (owner's signature data, IC card ID, etc.) stored in the IC card 201 via the IC card interface 207 and stores the data in the memory 210 (the IC card interface 207 Either a contact type or a non-contact type, which is a conventional technique, is used). 5. The ID number of the IC card 201 is sent to the host computer 204 to check whether the card is a registered card. 6. If the confirmation is OK, a message "Please enter a signature" is displayed on the liquid crystal touch panel 208. 7. The owner of the IC card 201 is the liquid crystal touch panel 20
8 Enter your autograph. 8. After input of necessary data to the liquid crystal touch panel 208 is completed, the signature data input by the data processing device 209 and the signature data of the IC card 201 stored in the memory 210 are collated in a fuzzy converted format. 9. If the collation result is OK, post-processing is performed as OK, and if it is NG, post-processing is performed as NG.

(B) When registering the signature data of the authorized IC card holder The registration mode is set using the changeover switch 214. 2. The IC card 201 is inserted into the IC card slot 206. 3. When it is confirmed that the IC card 201 has been set by a signal input via the IC card interface 207, the IC card control program is loaded from the ROM 211 into the memory of the CPU 205. 4. The CPU 205 checks the protection status of the IC card 201 (once the signature data is written, the protection is applied). 5. The ID number or the like of the IC card 201 is transmitted to the host computer 204 via the interface 213, and confirmation as to whether or not the IC card is a registered IC card is performed using the host computer 204. 6. If the confirmation of the ID number of the IC card is OK, a message "Please enter a signature" is displayed on the liquid crystal touch panel 208. 7. The owner of the IC card 201 has the liquid crystal touch panel 20
8. Enter your signature on 8. 8. After inputting necessary data, the liquid crystal touch panel 20
8. Press the registration completion button (not shown) on the screen. 9. When the CPU 205 confirms that the registration completion button has been pressed, the data processing device 209 is operated to create signature data. 10. The data processing device 209 performs fuzzy conversion of the signature data and stores it in the memory 210. 11. Steps 7 to 10 are performed a predetermined number of times, for example, 2
Repeat 10 times. This is because the averaged signature data is used as registration data because the signature of the authorized IC card holder also varies. 12. The CPU 205 transmits the signature data stored in the memory 210 to the IC card
Register in the card 201. 13. The CPU 205 inputs a control signal for protecting the IC card 201 and prohibits subsequent data registration.

Next, an IC card authentication system 300 according to a fourth embodiment of the present invention will be described. As shown in FIG. 8, the IC card authentication system 300
An IC card 301 has a function of storing C card registration data and information data and having a function of determining input data, and an IC card reader / writer 302 for reading and writing data of the inserted IC card 301.
The IC card 301 includes a nonvolatile memory 303 (or a volatile memory) for storing an IC card ID and reference signature data for storing registration data in a fuzzy-converted format, the registration data of the IC card holder, and an external memory. And a control unit for comparing and calculating data inputted from the PC to judge the similarity.

The control unit includes a CPU 304 for controlling the entire system, a reader / writer interface 305 connected to the CPU 304 to exchange data with the IC card reader / writer 302,
4, a memory 306 serving as a main storage device, a data processing device 307 for accessing the CPU 304 and each memory and performing data processing, and an IC card control program storage program for storing a program for operating the CPU 304. A ROM 308 and a ROM 309 for storing a data processing device control program are provided. I
C card reader / writer 302 is an IC card 301
Central control unit (CPU) 31 for taking in information data, signature data, etc. stored in
Has zero. The CPU 310 includes an IC card 301
Are connected via an IC card interface 312. The IC card reader / writer 302 is provided with a liquid crystal touch panel 313 to which input data of handwriting is inputted, and has a liquid crystal and a touch panel controller 314 for acquiring and processing input data of handwriting from the liquid crystal touch panel 313. The CPU 310 has a ROM 315 for storing an IC card control program and a ROM 31 for storing a liquid crystal touch panel control and an IC card ID collation program.
6 are connected. Further, the CPU 310 is provided with an interface 317 of the RS232C standard for exchanging data by connecting to a computer such as an external information terminal (not shown), and a working memory (main storage device) 318 of the CPU 310. Note that the IC card reader / writer 302 stores the IC card 3
The CPU 310 specifies one of a write mode (registration mode) and a read mode (authentication mode) for the CPU 310.
Is provided with a changeover switch 319 for controlling the operation of.

Next, the IC card authentication system 30
The operation method of 0 will be described. In the following, a procedure for authenticating the signature data input to the liquid crystal touch panel 313 and a procedure for registering the signature data will be described, but this procedure is generally the same as the procedure in the third embodiment. Therefore, detailed description is omitted. (A) When Authenticating Input Sign Data First, the owner of the IC card 301 inserts the IC card 301 in which the registered data of the IC card 301 is stored in a fuzzy converted format into the IC card reader / writer 302.
It is inserted into the card slot 311 and the changeover switch 319 is inserted.
Use to specify the authentication mode. This allows the CPU
ROM 31 for storing an IC card control program in 310
5 and the necessary program is stored in the ROM 316 for controlling the liquid crystal touch panel and storing the IC card collation program.
Loaded into the memory 318 of the PU 310, the CPU 31
0 is activated.

Thus, the owner of the IC card 301 inputs his / her signature (an example of input data) on the liquid crystal touch panel 313. The signature data is sent to the CPU 310 via the liquid crystal and touch panel controller 314, and the signature data is transmitted to the IC card interface 3
12, the data is input to the reader / writer interface 305 of the IC card 301. At this time, if necessary, the signature data can be transmitted to an external terminal or the like via the interface 317 of the RS232C standard. The signature data taken into the IC card 301 is stored in a ROM 30 for storing an IC card control program.
8. ROM 30 for storing data processing device control program
The determination process is performed by loading the program and data from the nonvolatile memory 303 for storing the ID 9 and the IC card ID and the reference signature data into the memory 306 and operating the CPU 304. Then, in accordance with the result of this determination processing, the reader / writer interface 305
A predetermined control signal is sent to the IC card reader / writer 302 via the. For example, if the input data and the registered data do not match, the IC card 30
Data output from 1 to the outside is prohibited, and when they match, reading and writing of information data is permitted.
The signature data for identifying the IC card holder, which is stored in the registration data storage memory area on the memory of the IC card 301, is stored in a fuzzy-converted format in advance. The input data determination process is performed using this data. Further, the data processing method in the data processing device 307 is substantially the same as the data processing method in the data processing device 17 in the first embodiment, and thus the description thereof is omitted.

(B) When Registering the Signature Data of the Authorized IC Card Holder The authorized holder of the IC card 301 is the IC card 30
1 is inserted into the IC card slot 311 of the IC card reader / writer 302, and the changeover switch 319 is used to specify the registration mode. 2. A signal input via the IC card interface 312 confirms that the IC card 301 has been set, and the execution program is loaded into the memory of the CPU 310 from the ROM 315 for storing the IC card control program. 3. The CPU 310 checks the protection status of the IC card 301 (once the signature data is written, the protection is activated). 4. The ID number or the like of the acquired IC card
The data is sent to an external host computer (not shown) via the interface 317 of the 2C standard, and the registered I
Check if it is a C card. 5. If the confirmation of the ID number of the IC card is OK, a message "Please enter a signature" is displayed on the liquid crystal touch panel 313. 6. The owner of the IC card 301 has the liquid crystal touch panel 31
3. Enter your signature on 3. 7. After inputting necessary data, the LCD touch panel 31
3. Press the registration completion button (not shown) on the screen. 8. When it is confirmed by the CPU 310 that the registration completion button has been pressed, the data processing device 307 is operated to create signature data. 9. The data processing device 307 fuzzy converts the signature data and stores it in the nonvolatile memory 303 for storing the IC card ID and the reference signature data. 10. The above steps 6 to 9 are repeated a predetermined number of times, for example, 2 to 10 times, to average the input signature data, and this data is registered in the nonvolatile memory 303 for storing the IC card ID and the reference signature data. . 11. The CPU 310 inputs a control signal to protect the IC card 301 and prohibits subsequent data registration.

The embodiment of the present invention has been described above.
The present invention is not limited to these embodiments, and all changes in conditions without departing from the gist are within the scope of the present invention. For example, in the present embodiment, a case has been described in which handwriting and voice data are used as an input pattern. However, fingerprint data of the card owner himself / herself read by a scanner or the like and iris of the eyeball of the IC card holder himself / herself are described. Can be used as input data.Furthermore, a plurality of these different input patterns are combined and used as input collation data. May be determined. Further, in addition to the authentication method based on these, it is also possible to collate input data of a personal identification number input from a keyboard or a liquid crystal touch panel with registration data of a personal identification number stored in advance in a registration data storage memory area. This makes it possible to extremely reduce the probability of a determination error occurring due to a coincidence, as compared to the case where the determination is made using only one type of input pattern.

[0040]

According to the first and second aspects of the present invention, the IC card has a registration data storage memory area for storing registration data composed of fuzzy data, so that the amount of information for authenticating an IC card holder is reduced. Thus, the subsequent data processing operation can be performed efficiently. Furthermore, IC
The similarity between the input matching fuzzy data input from the outside of the card body and the registered data fuzzy data is calculated, and when the similarity is larger than a predetermined value, the similarity is stored in the information data storage memory area via the interface. A data processing device is provided that permits the input and output of information data, so that even if a third party other than the authorized holder obtains this IC card, the information data stored on the IC card may be altered or altered. , Cannot be read, and the security of the IC card can be reliably improved. In particular, in the IC card according to the second aspect, since the data processing device includes the input data conversion processing unit that converts input data into fuzzy data, the amount of information necessary for data processing is efficiently reduced. be able to. Further, since there is a fuzzy association unit for calculating the similarity between the fuzzy data of the input data and the registered data and outputting the IC card holder authentication signal, data processing of data matching based on fuzzy theory can be performed reliably. And I
Since a ROM for storing a program for controlling reading and writing of the information data stored in the information data storage memory area based on the C card holder authentication signal is provided, the data is stored using only the program stored in the IC card. Processing can be performed.

According to a third aspect of the present invention, there is provided an IC card including a memory having an information data storage memory area and a registration data storage memory area, and an information data storage memory area based on an externally input IC card holder authentication signal. And an input / output control unit that reads and writes information data stored in the IC card. Therefore, an IC card having a security function can be configured with the minimum necessary number of components.

Claim 4 and claims 6 to 1 subordinate thereto.
0, an IC card including a memory having a registered data storage memory area and an information data storage memory area and an IC card having a data processing device, and an input pattern to be authenticated having coordinate values or the like. Input device that converts input data into input data and an IC card reader / writer that inputs input data obtained from the input device to the interface to input and output information data, reducing the amount of data processing involved in determination As a result, the operation speed is increased, and the reliability of the entire system can be increased.

Claim 5 and dependent claims 6 to 1
0, the registration data storage memory area, the information data storage memory area,
Since the IC card has an input / output control unit that reads and writes information data from the outside based on the IC card holder authentication signal, the IC card is configured using the minimum components necessary for security protection. it can. Then, the similarity between the fuzzy data of the registered data and the fuzzy data for input collation is determined by determining the similarity between the input device into which the input pattern for determining the IC card holder is input, and
An IC card authentication system with excellent security because it has a data processing device that outputs a C card holder authentication signal and an IC card reader / writer that inputs and outputs information data held in the IC card to and from an external information processing device. Can be constructed.

In particular, in the IC card authentication system according to the sixth aspect, since the data processing includes an input data conversion processing unit for converting input data into fuzzy data, the amount of information required for data processing is reduced. Can be performed efficiently. Furthermore, since there is a fuzzy association unit that calculates the similarity of each fuzzy data between the input data and the registration data and outputs an IC card holder authentication signal,
Data processing of data matching based on fuzzy theory can be performed reliably. In the IC card authentication system according to the seventh aspect, the input pattern includes handwriting input handwriting data, and the input device includes a liquid crystal touch panel on which handwriting is written. The IC card holder can be easily determined by signature without imposing an excessive burden on the user. In the IC card authentication system according to the present invention, since the handwriting data includes handwriting pressure data added to the liquid crystal touch panel at the time of input, the handwriting data is unique to the IC card holder in addition to the handwriting data. Is added, and the accuracy of IC card holder determination can be further improved.
In the IC card authentication system according to the ninth aspect,
The input pattern has voice data, and the input device is provided with a voice input device such as a microphone, so that even a person with a hand or other handicap can easily input information as a key when inputting and outputting information data. You can enter collation data. In the IC card authentication system according to the tenth aspect, the input pattern includes data of a password input from a keyboard or a liquid crystal touch panel, and is used in combination with data of a password registered in advance in a registration data storage memory area. Since the collation is performed, the authentication of the IC card holder can be performed more reliably. For example, this is a handwritten signature,
By combining with authentication by voice, the security of the authentication system of the IC card can be greatly improved.

[Brief description of the drawings]

FIG. 1 is a block diagram of an IC card authentication system according to a first embodiment of the present invention.

FIG. 2 is a block diagram of a calculation unit in the IC card authentication system.

FIG. 3 is a block diagram of an output storage unit and a card data input / output device connected thereto in the IC card authentication system.

FIG. 4 is a block diagram of a fuzzy association unit in the IC card authentication system.

FIG. 5 is a block diagram of an IC card authentication system according to a second embodiment of the present invention.

FIG. 6 is a block diagram of an IC card authentication system according to a third embodiment of the present invention.

FIG. 7 is an external view of the IC card authentication system.

FIG. 8 is a block diagram of an authentication system for an IC card according to a fourth embodiment of the present invention.

[Explanation of symbols]

REFERENCE SIGNS LIST 10 IC card authentication system 11 Memory 12 Interface 13 IC card 14 Card data input / output device 15 Liquid crystal touch panel 16 Handwritten character input device (input device) 17 Data processing device 18 Display device 19 Input processing unit 20 Operation unit 21 Fuzzy association unit 22 Interface 31 Input storage unit 32 Element vector calculation unit 33 Membership grade calculation unit 34 Output storage unit 35 Control unit 50 VPK calculation circuit 51 KSA and KEA calculation circuit 52 SA and EA calculation circuit 53 DX and DY calculation circuit 54 Membership grade Calculation circuit 60 RAM 61 RAM 62 RAM 63 RAM 64 RAM (for discrimination signal storage) 65 Flash memory 66 Flash memory 67 Flash memory 68 Flash memory 70 Comparison circuit 71 Comparison circuit 72 Comparison circuit 73 Comparison circuit 74 Small value accumulation circuit 75 Large value accumulation circuit 76 Individual similarity calculation circuit 77 Real vector similarity calculation circuit 78 Transition vector similarity calculation circuit 79 Start and end vector similarity calculation circuit Reference Signs List 80 Real vector similarity averaging circuit 81 Transition vector similarity averaging circuit 82 Start and end vector similarity averaging circuit 83 Total similarity calculating circuit 84 Judgment circuit 85 Control unit 100 IC card authentication system 101 IC card 102 Voice input device ( Input device) 103 Interface 104 IC card reader / writer 105 Data processing device 200 IC card authentication system 201 IC card 202 IC card reader / writer 203 Terminal 204 Host computer 205 CPU 206 IC Slot 207 IC card interface 208 liquid crystal touch panel 209 data processing device 210 memory 211 ROM 212 ROM 213 interface 214 changeover switch 300 IC card authentication system 301 IC card 302 IC card reader / writer 303 nonvolatile memory 304 CPU 305 reader / writer interface 306 memory 307 Data processing device 308 ROM 309 ROM 310 CPU 311 IC card slot 312 IC card interface 313 Liquid crystal touch panel 314 Liquid crystal and touch panel controller 315 ROM 316 ROM 317 interface 318 Memory 319 Switch

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Shigeru Nagasugi 2-10-1 Komine, Yawatanishi-ku, Kitakyushu-shi, Fukuoka F-term in Mitsui High-Tech Co., Ltd. 3E044 BA04 BA05 CA06 CA07 CA10 DA01 DA05 DC05 DD01 DE01 EA20 EB04 5B035 AA14 BB02 CA05 CA06 CA08 CA23 CA25 CA38 5B043 AA09 BA02 BA06 BA07 DA07 FA04 GA02 5B058 CA15 CA27 KA08 KA33 KA38 YA03

Claims (10)

[Claims] 1. An information data storage memory area for storing information data such as a deposit amount and a health management value relating to an IC card holder, and input of handwriting, voice, fingerprint, etc. for authenticating the IC card holder. The pattern is divided into each component, converted into a fuzzy vector composed of membership grades representing the characteristics of each component, and fuzzy data expressed by a set of the fuzzy vectors of the number of the components is stored as registration data. A similarity between the registered data storage memory area to be input, fuzzy data for input collation obtained by converting input data input from the outside through an interface of the IC card body into the same format as the registered data, and fuzzy data of the registered data When the similarity is greater than a predetermined value and the similarity is greater than a predetermined value, IC card, characterized in that the data processing device for performing an output is provided. 2. An input data conversion processing unit for converting input data of the input pattern to be authenticated into fuzzy data of the same format as the registration data, wherein the input data conversion processing unit Comparing the obtained fuzzy data with the fuzzy data of the registered data, calculating a similarity thereof, and outputting an IC card holder authentication signal when the similarity is larger than a predetermined value; ROM storing a program for controlling reading and writing of the information data stored in the information data storage memory area based on a user authentication signal
The IC card according to claim 1, comprising: 3. An information data storage memory area for storing information data such as a deposit amount and a health management value relating to the IC card holder, and input of handwriting, voice, fingerprint, etc. for authenticating the IC card holder. The pattern is divided into each component, converted into a fuzzy vector composed of membership grades representing the characteristics of each component, and fuzzy data represented by a set of the fuzzy vectors of the number of the components is stored as registration data. Controlling the reading and writing of the information data stored in the information data storage memory area based on an IC card holder authentication signal input from outside via an interface of the IC card body; An IC card, comprising: 4. An input pattern such as handwriting, voice, and fingerprint for authenticating an IC card holder is divided into each component, and converted into a fuzzy vector composed of membership grades representing the characteristics of each component. A registration data storage memory area for storing, as registration data, fuzzy data represented by a set of the fuzzy vectors of the number of the constituent elements, and information data such as a deposit amount and a health care value relating to the IC card holder. The input data input from the outside via an information data storage memory area and an interface provided in the IC card body is converted into fuzzy data for input matching in the same format as the registered data, and the fuzzy data for input matching is If the registered data and the fuzzy data match within a predetermined range, the IC card is registered via the interface. Output the card holder authentication signal,
An IC card including a data processing device for inputting and outputting the information data; an input device for converting the input pattern to be authenticated into input data such as coordinate values; and the input data obtained from the input device And an IC card reader / writer for inputting and outputting the information data to the interface. 5. An information data storage memory area for storing information data such as a deposit amount and a health management value relating to an IC card holder, and input of handwriting, voice, fingerprint, etc. for authenticating the IC card holder. The pattern is divided into each component, converted into a fuzzy vector composed of membership grades representing the characteristics of each component, and fuzzy data represented by a set of the fuzzy vectors of the number of the components is stored as registration data. Externally reading and writing the information data stored in the information data storage memory area based on a registered data storage memory area and an IC card holder authentication signal input externally through an interface of the IC card body. An IC card provided with an input / output control unit for performing the An input device to which a pattern is input; fuzzy data of the registration data obtained through the interface of the IC card; and input data of the input pattern obtained through the input device, in the same format as the registration data. A data processing device for determining the similarity with the converted fuzzy data for input collation and outputting the IC card holder authentication signal, and hosting the information data held in the IC card via an interface An IC card authentication system, comprising: an IC card reader / writer for inputting and outputting to an external information processing device such as a computer or a terminal. 6. An input data conversion processing unit for converting the input data into fuzzy data in the same format as the registration data, the input data conversion processing unit converting the fuzzy data converted by the input data conversion processing unit into the registration data. Is compared with the fuzzy data, and the similarity is calculated. If the similarity is larger than a predetermined value, the I
The IC card authentication system according to claim 4 or 5, further comprising a fuzzy association unit that outputs a C card holder authentication signal. 7. The IC card according to claim 4, wherein the input pattern includes handwriting data input by handwriting, and the input device includes a liquid crystal touch panel on which the handwriting is written. Authentication system. 8. The IC card authentication system according to claim 7, wherein the handwriting data includes handwriting pressure data added to the liquid crystal touch panel at the time of input. 9. The input pattern includes audio data,
The IC according to any one of claims 4 to 8, wherein the input device includes a voice input device such as a microphone.
Card authentication system. 10. The input pattern includes input data of the personal identification number input from a keyboard or a liquid crystal touch panel, and collation with the personal identification number registration data stored in the registration data storage memory area is performed. The authentication system for an IC card according to claim 4.