JP2002342734A - Portable electronic equipment and its history data storing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide portable electronic equipment capable of efficiently grasping the situation of an access from the outside part and its history data storing method. SOLUTION: At the time of receiving instruction data, a CPU 21 of an IC card 1 confirms whether or not the instruction data are a command registered in a command control table 30 (ST14). In the case of the registered command, the CPU 21 judges whether or not log data should be stored (ST16), and which information (all data or the command or only a status code) should be recorded (ST19) (ST23) when the log data should be stored by referring to corresponding identification information. Then, information judged in the ST19 and ST23 is stored in the log data, and command processing is performed based on the received instruction data (ST22), and response data are outputted to an external device (reader/writer 4 or the like) (ST18).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable electronic device, for example, an IC card for executing various processes based on a command supplied from the outside. The present invention relates to a portable electronic device capable of analyzing an access and a method of storing data of the portable electronic device.

[0002]

2. Description of the Related Art In recent years, as a portable electronic device, a so-called IC card having a built-in IC chip having a nonvolatile data memory and a CPU (Central Processing Unit) for controlling the same has been used in various industrial fields. It's being used. Compared with a conventional magnetic card or the like, an IC card has a much larger memory capacity and is more difficult to gain unauthorized access, so that various security information such as personal information is stored in some cases. However, as the use of IC cards expands, the risk of being engulfed in dangers such as unauthorized access increases, and the importance of security is increasing. As such security measures,
For example, it is conceivable to store all commands input to the IC card from outside as log data.

[0003]

In the conventional device as described above, since the area for storing log data is limited in the memory of the IC card, all input data and the like input from the outside are stored. In such a case, the IC card cannot be recognized (it is not defined in the IC card), the log data of the command becomes full, and it is not possible to analyze how the unauthorized access was made. is there. The present invention has been made in view of the above points, and an object of the present invention is to provide a portable electronic device capable of efficiently ascertaining an external access situation and a method of storing history data thereof.

[0004]

In order to achieve the above object, a portable electronic device according to the present invention comprises a receiving means for receiving a command from the outside, and a command storage means in which information on commands which can be processed in advance is registered. A history information storage unit for storing, as an access history, information relating to a command input from the outside and registered in the command storage unit; and determining whether the command received by the reception unit is registered in the command storage unit. A determining unit that, when the determining unit determines that the received command is a command registered in the command storage unit, executes a process for the received command and outputs information indicating a result of the process to the outside The received command is registered in the command storage means by the command processing means and the determination means. If the command is determined to be a command, the information relating to the received command is written to the history information storage means. If the determination means determines that the received command is not registered in the command storage means, the history information storage Writing processing means for not performing writing to the means.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) An embodiment according to the present invention will be described below in detail with reference to the drawings. FIG. 2 is a diagram for explaining a system configuration using an IC card 1 (including both a contact type and a wireless type) and a reader / writer 4 (including both a contact type and a wireless type) as a portable electronic device according to the present invention. It is.

As shown in FIG. 2, a system A using an IC card 1 includes a host computer 3 as an upper device having an internal memory (not shown) and a reader as a terminal device connected to the host computer 3. Writer 4
, A display device 5, a keyboard 6, and a printer 7.

The reader / writer 4 has an internal memory, which will be described later, and reads and writes (transmits and receives) electronic messages to and from the IC card 1 by contact or non-contact. The display device 5 informs an operator of an operation procedure and an operation state. The keyboard 6 is operated and input by an operator. The printer 7 prints the instructed information in accordance with an operation instruction of the operator.

When a contact type IC card is used, an IC card insertion section (not shown) for inserting the contact type IC card into the reader / writer 4 is provided.
When a C card is used, the reader / writer 4 and the wireless I
A communication unit (not shown) for communicating with the C card is provided.

FIG. 3 is a diagram schematically showing functional blocks of the IC card 1 constituting the system of FIG. As shown in FIG. 3, the IC card 1 has a read / write section (R /
W unit) 17, password setting / password collating unit 18, encryption /
It comprises a part for executing basic functions such as a decoding unit 19 and a supervisor 20 for managing these basic functions.

The R / W unit 17 has a function of reading, writing, or erasing data from a data memory or the like. The password setting / password collation unit 18 performs storage and readout prohibition processing of the password set by the user, collates the password after setting the password with the password input from the external device, and performs the subsequent processing. Has the function of giving permission.

The encryption / decryption unit 19 communicates with the reader / writer 4 via a communication line or wireless communication.
It has a function of performing encryption and decryption for preventing leakage and forgery of communication data when transmitting and receiving data to and from the C card 1.

Further, the encryption / decryption unit 19 has a function of encrypting transmission data and decrypting the encrypted data. The supervisor 20 has a function of decoding and executing a function code input from the reader / writer 4 or a function code to which data is added.

FIG. 4 is a schematic control block diagram of the IC card 1. As shown in FIG. 4, in order to execute various functions as shown in FIG. 4, a control element 21 such as a CPU, a data memory 22 as a storage means, a program memory 23, It comprises a work memory 24 and an I / F unit 25 as a receiving means for transmitting and receiving signals to and from the reader / writer 4.

In the case of the wireless IC card 1, the I / F unit 25 is configured as an antenna unit, and receives the modulated wave transmitted from the reader / writer 4 in a non-contact manner or transmits the modulated wave to the outside. Has become. Also, this antenna section 25
A power supply and a clock to be supplied to an internal circuit are generated from the modulated wave received by the control unit.

In the case of the contact type IC card 1, the power supply and the clock are obtained by contacting with an IC card I / F unit (contact unit) (not shown) provided in the reader / writer 4 in a contact unit. It has become.
Among these configurations, the control element 21 and the data memory 2
2, the program memory 23 and the work memory 24 are 1
One IC chip (or a plurality of IC chips) is embedded in the IC card body. Control element 21
Performs various determination processes and a process of writing to a memory.

The program memory 23 includes, for example, a mask R
It is composed of an OM, and stores a control program of the control element 21 including a subroutine for realizing each basic function as described above. Further, a command control table 30 as a control information storage unit and a command storage unit of the present invention described later is also stored.

The command control table 30 stores command data executable by the IC card 1 and also stores control information such as whether or not to store log data and what information to store as log data. Have been.

The data memory 22 is used for storing applications and data, and is composed of an erasable nonvolatile memory such as an EEPROM. The work memory 24 is a work memory for temporarily storing processing data when the control element 21 performs processing, and is constituted by a volatile memory such as a RAM, for example.

FIG. 5 shows the internal configuration of the data memory 22. The data memory 22 includes a control area 220, a directory 221, a free area 222, and an area group 2
23. The area group 223 can have a plurality of data areas and key areas, and
They can be grouped by a concept called a data file (DF).

The data file is a file for collectively managing a data area and a key area used by a corresponding application. The data area is an area for storing data to be read and written as needed, such as transaction data. The key area is an area in which, for example, a personal identification number is stored. The key area is a target for writing / rewriting / verification and cannot be read.

In the data area of the area group 223, a log storage file 40 as history information storage means of the present invention, which will be described later, is stored. The log storage file 40 is a file for storing, as log data, input information and output information regarding instruction data that can be executed by the IC card 1.

FIG. 6 shows a state in which the reader / writer 4 changes the IC card 1
FIG. 4 is a diagram for describing a configuration of instruction data supplied to the STA. The instruction data is classified into command classifications (CLA: c
class) or instruction (INS: instruction)
, A command code portion consisting of
P2.

The instruction data for instructing reading as shown in FIG. 6A is further provided with Le indicating the data length to be read. In the instruction data for instructing the writing as shown in FIG. 6B, a data portion (DATA) for further writing and Lc indicating the data length of the data to be written are added.

FIG. 7 is a diagram for explaining the structure of response data output from the IC card 1 to the reader / writer 4 after the instruction data from the reader / writer 4 is executed. FIG. 7A shows a configuration of response data to command data instructing reading, and a data portion (DA
TA) and a status code (STATUS). FIG. 7B shows the configuration of response data to command data instructing writing, and is made up of a status code (STATUS).

FIG. 8 shows a command control table 30 for storing instruction data executable by the IC card 1. The command control table 30 stores command codes (CLA, INS) indicating executable instruction data.

Further, identification information relating to the storage contents of the log data is stored in correspondence with the command code. The identification information is composed of three stages. First
The identification information indicates whether or not log data is stored. “1” indicates that log data is not stored.
“0” indicates that log data is stored.

For example, a command code related to security, that is, a PIN (Personal Identity)
It is more effective to set “0” to store log data for a command used to establish an access right to an IC card, such as a command related to (Fixation Number) collation and a command related to authentication.

The second identification information indicates what is to be stored as log data in input data such as command data input from an external device such as the reader / writer 4. That is, if "0", only the command code (CLA, INS) of the instruction data is stored as log data, and if "1", all input data (all data) input from the outside is stored as log data. To do so.

The third identification information indicates what is stored as log data in output data such as response data output to an external device such as the reader / writer 4. That is, "0" indicates that only the status code (STATUS) of the response data is stored as log data, and "1" indicates that all output data (all data) output to the outside is stored as log data. Show.

The command control table 30 stores, in correspondence with the command code, whether or not a key collation is required as an access right, and a command processing address in which a program for executing the command processing is stored. .

Next, FIG. 9 is a diagram for explaining the configuration of the log storage file 40 for storing log data. The log storage file 40 has a plurality of records capable of storing a plurality of log data. In the present embodiment,
It has five records for storing log data.

When a record is full of log data, the record storing the oldest log data is overwritten with the latest log data. Therefore,
The log storage file 40 always stores the five latest log data.

The record in which the latest log data is stored is given "CP: Current Pointer". Further, a record storing the log data is given a record number. That is, the record number of the record storing the latest log data is “# 1”. Then, from the newer to the older,
Record numbers are assigned in the order of “1” → “# 2” → “# 3” → “# 4” → “# 5”.

When reading the log data, the record in which the log data to be read is stored is accessed by designating the record number. That is, in FIG. 9A, “log data # 1” is stored in the log storage file 40. This "log data #
Since “1” is the latest log data, “CP” is added thereto, and a record number “# 1” is added.

In FIG. 9B, “log data # 2” and “log data # 3” are further stored in order for the log storage file 40 storing “log data # 1”. Therefore, the latest log data "log data #
“CP” is added to the record in which “3” is stored.

Record numbers are assigned sequentially from new log data. That is, in the order of new log data “log data # 3” → “log data # 2” → “log data # 1”, record numbers “# 1” → “# 2” →
“# 3” is added. As shown in FIG. 9C, when the log storage file 40 is full of log data and there are no more empty records, the next case of storing “log data # 6” is as shown in FIG. 9D. In this way, the oldest log data “log data # 1” is overwritten on the stored record. Re-add the record number and “CP”.

FIG. 10 is a diagram showing a configuration of log data stored in a record of the log storage file 40. In the present embodiment, one piece of log data includes information on input data and information on output data. As will be described later, first, when receiving input data such as instruction data, the IC card 1 stores information on the input data (part or all of the input data) in a record.

Then, after the command processing is completed and before output data such as response data is transmitted to the outside, information about output data (one of output data) is added to a record in which information about corresponding input data is stored. Part or all).

FIG. 1 is a flowchart for explaining command processing and log data storage processing in the IC card 1. When the reset of the IC card 1 is released by the reader / writer 4 (ST11), the CPU 21 of the IC card 1 outputs the initial response data to the reader / writer 4 (ST12). Then, the CPU 2 of the IC card 1
1 receives command data from the reader / writer 4 via the I / F unit 25 (ST13),
It is checked whether the command is registered in the command control table 30 of the EPROM 22 (ST14).

In ST14, the CPU 21 fetches a command code (CLA, INS) from the reception command data having the configuration shown in FIG. 6, and stores the command code (CLA, INS) in the command control table 30. Check if it is a command code.

If it is determined in ST14 that the command is not registered in the command control table 30, a status code indicating an undefined command is output as response data (ST15). If it is determined in ST14 that the command is registered in the command control table 30, it is checked whether or not log data is to be stored by referring to the first corresponding identification information (ST16).

That is, in ST16, if the first control information corresponding to the command code of the received command data is "1" in the command control table 30, it is determined that the log data is not stored, and the corresponding first control information is stored. If the control information is "0", it is determined that log data is stored.

If it is determined in ST16 that the log data is not stored, the CPU 21 executes command processing based on the command processing address corresponding to the command code of the received instruction data (ST17), and outputs response data. (ST18).

If it is determined in ST16 that the log data is to be stored, the CPU 21 further refers to the corresponding second control information to determine which information in the received command data is to be stored (ST19). ). That is, in ST19, if the second control information corresponding to the command code of the received instruction data is “0” in the command control table 30, it is determined that only the command code in the instruction data is stored as log data, If the corresponding second control information is “1”, it is determined that all input data (received instruction data) is stored as log data.

If it is determined in ST19 that only the command code is to be stored as log data, the CPU 21 stores an empty record in the log storage file 40 or a record storing the oldest log data in the command data received this time. The command code is stored (ST20).

If it is determined in ST19 that all the input data is to be stored as log data, the CPU 21 stores all of the command data received this time in an empty record of the log storage file 40 or a record storing the oldest log data. Is stored (ST21).

When the storage of the information on the instruction data (input data) is completed, the CPU 21 executes the command processing based on the command processing address corresponding to the command code of the received instruction data (ST22). ST22
Is completed, the CPU 21 refers to the third identification information corresponding to the executed command in the command control table 30 to determine which information in the response data to be output is stored (ST2).
3).

That is, in the step ST23, if the third control information corresponding to the command executed in the step ST22 is "0" in the command control table 30, it is determined that only the status code is stored as the log data. If the control information of No. 3 is “1”, it is determined that all output data (response data to be output) is stored as log data.

When it is determined in ST23 that only the status code is stored as the log data, the CPU 21
In the log storage file 40, the status code of the response data to be output is stored following the information on the instruction data for the record in which the information (part or all) of the instruction data corresponding to the log data is stored (ST24). ).

If it is determined in ST23 that all output data is stored as log data, the CPU 21 stores, in the log storage file 40, a record in which information (part or all) of the instruction data corresponding to the log data is stored. On the other hand, following the information on the command data, all the response data to be output are stored (ST2).
5).

When the storage of the information on the output data as the log data in ST24 or ST25 is completed, the response data is output to the external device (the reader / writer 4 or the like) (ST18). Then, it enters a state of waiting for the next instruction data reception.

That is, when the instruction data including the command code relating to the PIN collation is received in ST13,
At 14, it is confirmed whether the command is registered based on the command control table. Then, if it is determined that the command is a registered command, the P
The first to third control information corresponding to the command code related to the IN collation is referred to.

Since "0" is set in the first control information so that log data is stored for a command code relating to security, an empty record in the log storage file 40 is stored based on the second control information. Alternatively, all the command data received this time or only the command code is stored in the record storing the oldest log data (ST20, ST21).

Then, a command process is executed in ST22. That is, the PIN information added to the instruction data is compared with PIN information (not shown) stored in the memory in advance. As a result of the comparison, if they match, a status code indicating normality is created as response data. In the case of non-coincidence, a status code indicating collation non-coincidence is created as response data.

Then, based on the third control information, all the response data or only the status code is stored in an empty record in the log storage file 40 or a record storing the oldest log data (S
(T24, ST25), the created response data is output to the external device (the reader / writer 4 or the like), and the process related to the PIN verification is completed (ST1).
8).

In this embodiment, the log data stored in the log storage file stores information about the input data when the input data (such as command data) is received, and the command processing is completed. When output data (response data, etc.) is output to the device, information about the output data is stored after information about the corresponding input data.

However, without being limited to this method, when the command processing is completed and the output data is output to the outside, the information regarding the input data and the information regarding the output data may be stored together in the log storage file. .

Next, a modified example will be described with reference to FIGS. In the present modification, the log data stored in the log storage file stores only information related to input data when input data (command data or the like) is received, and does not store information related to output data. different.

FIG. 11 shows a modified example of the command control table 30, which is composed of a command code (CLA, INS), two pieces of control information, an access right, and a command processing address.
The difference is that the control information is composed of the first control information and the second control information.

Therefore, in this modification, the first identification information indicates whether or not log data is stored, "1" indicates that log data is not stored, and "0" indicates that log data is stored. Indicates that Also, the second identification information indicates what is stored as log data in input data such as instruction data input from an external device such as the reader / writer 4, and “0” indicates an instruction as log data. It indicates that only the command code (CLA, INS) of data is stored, and "1" indicates that all input data (all data) input from the outside is stored as log data.

FIG. 12 is a diagram showing a configuration of log data stored in a record of the log storage file 40. In the present modified example, the content of one log data includes only information on input data. FIG. 13 is a flowchart for explaining a modified example of the command processing and the log data storage processing in the IC card 1 based on the command control table 30 shown in FIG. Steps that perform the same processing as in FIG. 1 are given the same step numbers.

In ST14, the CPU 21 determines the command code (CLA, INS) of the received instruction data as shown in FIG.
When it is determined based on the command control table 30 shown in FIG. 1 that the command is a registered command, it is determined whether or not log data is to be stored by referring to the first identification information corresponding to the next command ( ST16).

If it is determined in ST16 that log data is to be stored, CPU 21 further refers to the corresponding second control information to determine which information in the received command data is to be stored (ST19). ). If it is determined in ST19 that only the command code is stored as the log data, the CPU 21 stores the command code of the currently received instruction data in an empty record of the log storage file 40 or a record storing the oldest log data. Is stored (ST20).

If it is determined in ST19 that all the input data is stored as log data, the CPU 21 stores all the instruction data received this time in an empty record of the log storage file 40 or a record storing the oldest log data. Is stored (ST21).

When the storage of the information on the command data (input data) is completed, the CPU 21 executes the command processing based on the command processing address corresponding to the command code of the received command data (ST22), and executes the external device (reader / writer). 4) is output (ST18). Then, it enters a state of waiting for the next instruction data reception.

As described above, in the modification of the present embodiment,
By storing, as log data, at least information on input data of instruction data registered in the IC card 1 in advance, it is possible to analyze what kind of access has been made to the IC card 1. This has the effect.

FIG. 14 is a diagram showing instruction data for reading log data. Command code (CLA = 80, INS = E0) indicating a read command, parameter data (P1 = 01, P
2 = 00), Le (00) indicating the data length to be read
Consists of Now, Le = 00 indicates that, for example, all data in the specified record is read.

FIG. 15 is a flowchart for explaining a process of reading log data from the log storage file 40 of the IC card 1. In FIG. 1 or FIG.
The process of ST22 when the command data related to the log data reading as shown in FIG. 14 is received will be described in detail.

The instruction data for reading the log data is as follows:
From the command control table, "key collation required" is required as a condition of the access right. The following explanation is
A description will be given on the assumption that command data relating to key collation has been executed on the IC card 1 in advance, and the access right has already been established by collation matching.

When command data relating to log data reading is received in ST13 of FIG. 1 or FIG.
It is determined that the command is registered at T14,
The control information corresponding to the command code of the received instruction data is referred to in the command control table 30 after ST16.

According to the command control table 30 shown in FIG. 8, the command code (CL
A = 80, INS = E0)
Is set to not store the log data because the control information is “1”. Therefore, in ST16, C
PU 21 determines not to store the log data, and
The process proceeds to the command processing related to the reading of the log data shown in FIG.

As shown in FIG. 15, the command processing related to the reading of log data is executed by the CPU 21 by checking whether the record number indicated by P1 in the instruction data (for reading) exists in the log storage file 40 or not. Confirmation (ST31).

As a result of the confirmation in ST31, if it is determined that the record number indicated by P1 does not exist (ST32),
A status code indicating that log data of the target record number does not exist is created as response data (ST3).
3).

As a result of the confirmation in ST31, when it is determined that the record number indicated by P1 exists (ST32), the log data of the designated record number is read from the log storage file 40, and a status code indicating normality is added. Then, response data is created (ST34).

When the response data is created in this manner, in FIG. 1, the created response data is transmitted to an external device (the reader / writer 4 or the like), and the log data reading process ends. (ST1
8).

As described above, according to the present embodiment, IC access is not required for external access processing including unauthorized access.
The log data is stored only for the command data including the command registered in advance in the card (command control table). Therefore, in order to efficiently store the status of access from the outside, a log necessary for analysis of unauthorized access is stored, so that there is an effect that analysis can be performed efficiently.

In this embodiment, whether or not log data is stored for each command is set in the command control table in advance. Therefore, there is an effect that it is possible to efficiently store only the logs of the commands that need to be analyzed. In addition, there is also an effect that the number of times of pressing can be reduced without securing a memory area for storing log data more than necessary.

In this embodiment, whether all data of input data (command data, etc.) or output data (response data, etc.) is stored as log data,
Whether to store only some data such as a command code and a status code is set in advance. Therefore, there is an effect that it is possible to efficiently store only the logs of the commands that need to be analyzed. Also, with a small memory area,
There is also an effect that only information important for access analysis can be stored.

Further, in the present embodiment, it is set that the log data is not stored in the reading process of the log data. Therefore, it is possible to efficiently store only the logs of the commands that need to be analyzed. Also, there is an effect that only information important for access analysis can be stored in a small memory area.

[0080]

As described above, according to the present invention,
It is possible to efficiently grasp the status of external access.

[Brief description of the drawings]

FIG. 1 is an IC card 1 according to a portable electronic device of the present invention.
9 is a flowchart for explaining command processing and log data storage processing (history data storage method) in FIG.

FIG. 2 is a diagram schematically illustrating a system configuration A using an IC card 1 and a reader / writer 4;

FIG. 3 is a diagram showing basic functional blocks of the IC card 1.

FIG. 4 is a diagram showing a control block of the IC card 1.

FIG. 5 is a diagram for conceptually explaining the configuration of a data memory 22 of the IC card 1.

FIG. 6 is a diagram showing a configuration of instruction data.

FIG. 7 is a diagram showing a configuration of response data.

FIG. 8 is a view for explaining a command control table 30;

FIG. 9 is a diagram illustrating a log storage file.

FIG. 10 is a view for explaining the configuration of log data.

FIG. 11 is a diagram illustrating a modification of the command control table 30.

FIG. 12 is a view for explaining a configuration of a modified example of log data.

FIG. 13 is a flowchart illustrating a modified example of the command processing and the log data storage processing (history data storage method) in the IC card 1.

FIG. 14 is a diagram showing instruction data relating to log data reading.

FIG. 15 is a flowchart illustrating a process of reading log data in the IC card.

[Explanation of symbols]

 A system 1 IC card 4 Reader / writer 30 Command control table 40 Log storage file

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2C005 MA05 SA02 SA04 SA06 SA08 SA21 SA23 TA21 TA22 5B017 AA03 BA05 CA12 5B035 AA13 BB09 CA11 CA38 5B042 GA13 HH30 MA05 MA08 MA14 MC02

Claims (10)

[Claims] 1. A receiving means for receiving a command from the outside, a command storage means in which information on a command which can be processed in advance is registered, and information on a command inputted from the outside and registered in the command storage means as an access history. History information storing means for storing, determining means for determining whether a command received by the receiving means is registered in the command storing means, and a command in which the received command is registered in the command storing means by the determining means When it is determined that the received command is executed, the command processing means for executing the processing on the received command and outputting information indicating the processing result to the outside, and the received command is registered in the command storage means by the determination means If it is determined that the received command is a command, the received command is stored in the history information storage means. And writing processing means for not writing to the history information storage means when the determination means determines that the received command is not registered in the command storage means. And a portable electronic device. 2. A receiving means for receiving command data including command code information indicating a command from the outside, a command storing means in which information on a command which can be processed in advance is registered, and a command input from the outside and registered in the command storing means. History information storage means for storing, as an access history, information relating to command data including a set command, and a command for storing or receiving a command code as access history information corresponding to each command registered in the command storage means. Control information storage means for storing control information indicating whether to store all data; first determination for determining whether a command in the command data received by the reception means is registered in the command storage means Means, and a command registered in the command storage means by the first determination means. If it is determined that there is a command, the command processing means executes processing for the received command and outputs information indicating the processing result to the outside, and the command registered in the command storage means by the first determination means. Is determined, the received command stores a command code or all received data based on the control information of the control information storage means. The second determination means determines whether the received command stores all of the received data. When the determination means determines that the command code is stored, the command code included in the received instruction data is written into the history information storage means,
If it is determined by the determination means that all the received data is stored, all the received command data is written into the history information storage means, and the received command is not registered in the command storage means by the first determination means. And a writing processing unit that does not perform writing to the history information storage unit. 3. A receiving means for receiving command data including command code information indicating a command from the outside, a command storing means in which information on a command which can be processed in advance is registered, and a command data received by the receiving means. First determining means for determining whether a command included is registered in the command storage means; and determining that the received command is a command registered in the command storage means by the first determining means. Command processing means for executing response processing including a response code indicating the processing result to the outside, and storing, as an access history, information relating to response data for commands input from outside and registered in the command storage means. History information storage means, and each frame registered in the command storage means. Control information storage means for storing control information indicating whether a response code is stored as access history information or all response data to be output corresponding to the access history information, and the command processing by the command processing means is completed. Then, based on the control information in the control information storage means, the received command stores a response code or stores all output response data. The second determination means determines If it is determined that the response code is to be stored, the response code included in the response data to be output is written to the history information storage means, and if it is determined that all the response data to be output is stored by the second determination means, All the response data to be output are written to the history information storage means, and the first determination means writes the response data. A portable electronic device, comprising: a write processing unit that does not perform writing to the history information storage unit when it is determined that the received command is not registered in the command storage unit. 4. A receiving means for receiving a command from the outside, a command storage means in which information on a command which can be processed in advance is registered, and information on a command inputted from the outside and registered in the command storage means as an access history. History information storage means for storing, control information storage means for storing control information indicating whether or not a command for storing information of the access history corresponding to each command registered in the command storage means, First determining means for determining whether the command received by the receiving means is registered in the command storing means; and determining that the command is registered in the command storing means by the first determining means. Command processing for executing processing for the received command and outputting information indicating the processing result to the outside. And if the first determination means determines that the command is a command registered in the command storage means, the received command is a command for storing access history information based on the control information of the control information storage means. The second to determine if there is
When the second determination means determines that the command is a command for storing access history information, the information relating to the received command is written in the history information storage means, and the reception is performed by the first determination means. A portable electronic device, comprising: a write processing unit that does not write to the history information storage unit when it is determined that the command is not registered in the command storage unit. 5. A receiving means for receiving a command from the outside, a command storing means in which information on a command which can be processed in advance is registered, and a command included in the command data received by the receiving means is stored in the command storing means. First determining means for determining whether or not the command is registered; if the first determining means determines that the command is a command registered in the command storage means, a process for the received command is executed; A command processing means for outputting a response indicating the response to the outside, a history information storage means for storing information regarding a response to a command input from the outside and registered in the command storage means as an access history, and a command registered in the command storage means. Whether it is a command that stores access history information corresponding to each command When the command processing by the command processing means is completed, the received command is a command for storing information of the access history based on the control information of the control information storage means. A second determining means for determining whether the command is a command for storing access history information, and when the second determining means determines that the command is a command for storing access history information, the information on the response to be output is written in the history information storing means; Writing processing means for not writing to the history information storage means when the determination means determines that the received command is not registered in the command storage means. Electronic devices. 6. The command processing means, wherein when the receiving means receives a read command of access history information, the command processing means reads the access history information specified by the read command from the history information storage means; 6. The portable electronic device according to claim 1, further comprising: an output unit that outputs the access history information read by the reading unit to the outside. 7. A collating means for collating by comparing the key information received by the receiving means with preset key information. If the key information is matched as a result of the comparison by the collating means, 7. The portable electronic device according to claim 6, further comprising: control means for controlling the reading means to read the access history information. 8. A receiving means for receiving command data including command code information indicating a command from outside, a command storing means in which information relating to a command which can be processed in advance is registered, and a command input from outside and registered in said command storing means. History information storage means for storing, as an access history, information relating to instruction data including the set command, and determining whether the command is a command for storing access history information corresponding to each command registered in the command storage means. Control information storage means for storing first control information indicating whether a command code is stored as access history information or second control information indicating whether to store all received instruction data; Whether the command included in the command data received by the command is registered in the command storage means When the first determination unit determines that the received command is a command registered in the command storage unit, the first determination unit executes processing for the received command, and sends information indicating the processing result to the outside. A command processing means for outputting, and when the first determination means determines that the command is a command registered in the command storage means, the received command is accessed based on the first control information of the control information storage means. Second determining means for determining whether the command is a command for storing history information; and when the second determining means determines that the command is a command for storing access history information, Third determining means for determining whether the received command stores a command code or all received data based on the control information; When it is determined that the command code is stored by the determining means, the command code included in the received instruction data is written into the history information storing means, and it is determined that all the received data is stored by the second determining means. Then, all of the received instruction data is written in the history information storage means, and the first determination means determines that the received command is not registered in the command storage means, or the second determination means A portable electronic device, comprising: a writing processing unit that does not write to the history information storage unit when it is determined by the unit that the command is not a command for storing access history information. 9. A portable device having a memory, in which information relating to a processable command is registered in advance, executing a process for a command received from the outside, and outputting information indicating the processing result to the outside. In the history data storage method of the electronic device, a step of determining whether the received command is registered in the memory; and, as a result of the determination, when it is determined that the received command is a registered command, Writing information about the received command as an access history; and, as a result of the determination, when it is determined that the received command is a command that is not registered, prohibiting writing of access history information to the memory; A history data storage method for a portable electronic device, comprising: . 10. A portable device having a memory, in which information relating to a processable command is registered in advance, executing a process for a command received from the outside, and outputting information indicating the processing result to the outside. In the history data storage method of the electronic device, a step of determining whether the received command is registered in the memory; and, as a result of the determination, when it is determined that the received command is a registered command, Writing information about the received command as an access history; and, if the result of the determination is that the received command is a command that is not registered, an error is output to the outside without writing access history information to the memory. Outputting a response indicating: a portable electronic device comprising: History data storage method.