JPWO2002023349A1 - Portable electronic media - Google Patents

Abstract

According to the present invention, a substrate (2) provided with wiring, a memory (4) mounted on the substrate (2) by solder and recording data and an authentication key are recorded, and recording data. And an internal memory (3b) in which an authentication key is recorded, and a control unit (3a) that controls recording of data in the memory (4) and controls reproduction of data recorded in the memory (4). And a memory control LSI (3) mounted on the board (2) with the bare chip covered with a sealing resin and connected to the board (2) by gold wire bonding. The control unit (3a) determines whether or not the authentication key recorded in the memory (4) matches the authentication key recorded in the internal memory (3b). 4) in which it is determined whether correct or not.

Description

Technical field
The present invention relates to a portable electronic medium as a memory card in which a memory for recording data and a control circuit for controlling the memory are separately mounted on one card.
Background art
Generally, when a memory in which data is recorded and a control circuit (control LSI) for controlling the memory are separately mounted on one card (substrate), the memory and the control LSI are respectively mounted on the substrate. And are connected by solder.
Therefore, the memory can be easily replaced, and the control LSI can be removed for analysis.
As a result, forgery in which only the memory is replaced and used, or the memory capacity is increased, is possible.
Disclosure of the invention
The present invention has been made in consideration of the above circumstances, and has as its object to prohibit mounting of a memory other than a memory corresponding to a control circuit, thereby preventing forgery caused by mounting a different memory.
An object of the present invention is to make it difficult to analyze a control circuit that controls a memory.
A portable electronic medium according to the present invention includes a substrate on which wiring is provided, a first memory mounted on the substrate and recording data and an authentication key, and an authentication key recording data and And a control unit configured to control recording of data in the first memory or control reproduction of data recorded in the first memory by a chip. A control circuit mounted on the board and connected to the board, wherein the control unit is configured to authenticate the authentication key recorded in the first memory and the authentication key recorded in the second memory. It is determined whether or not the first memory is correct based on whether or not they match.
A portable electronic medium according to the present invention includes a substrate on which wiring is provided, a first memory mounted on the substrate and recording data, and a device for recording data and recording status information of the first memory. A second memory and a control unit that controls recording of data in the first memory and controls reproduction of data recorded in the first memory by a chip. And a control circuit connected to the substrate, wherein the control unit matches a state of the first memory with state information of the first memory recorded in the second memory. Whether or not the first memory is correct is determined based on whether or not the first memory is correct.
A portable electronic medium according to the present invention includes a board on which wiring is provided, a first memory mounted on the board, which records data and records encrypted data obtained by encrypting an authentication key, A second memory in which data is recorded and an authentication key, an encryption key, and a decryption program are recorded; and recording of data in the first memory is controlled or recorded in the first memory. A control unit configured to control data reproduction is configured by a chip, mounted on the substrate, and configured to include a control circuit connected to the substrate; and the control unit is configured to control the encryption stored in the first memory. The decrypted data is decrypted into an authentication key by an encryption key and a decryption program recorded in the second memory, and the decrypted authentication key and the authentication key recorded in the second memory are Depending on whether the match is to determine whether the first memory is correct.
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described.
First, FIG. 1 to FIG. Reference numeral 3 denotes a configuration of a memory card (SD card) M as a portable electronic medium. FIG. 1 shows an internal configuration of the memory card M, and FIG. 2 shows the internal configuration of the memory card M. FIG. Reference numeral 3 denotes a cross-sectional configuration inside the memory card M.
That is, the memory card M includes a memory control LSI (control circuit, controller) 3, a memory (external memory, first memory) 4, a chip component 5, and other ICs 6 on a substrate 2 having an external connection terminal 1. Implemented in FIG. As shown in FIG.
The external connection terminals 1 of the substrate 2 are hard gold-plated to increase contact durability.
The surface 2a of the substrate 2 opposite to the surface on which the external connection terminals 1 are provided is provided with soft gold plating suitable for gold wire bonding.
On the surface 2a, the memory control LSI 3 as a bare chip memory control chip is die-bonded, the substrate 2 and the bare chip (memory control LSI 3) are connected by gold wire bonding, and mounting is performed by covering with a sealing resin 8. . Thereafter, a TSOP type memory 4, a chip component 5, and other ICs 6 are mounted by soldering.
As described above, by mounting the memory control LSI 3 on the substrate 2 with a bare chip, there is an effect that key data analysis becomes difficult.
Next, with respect to the control circuit of the memory card M, FIG. 5 will be described.
This memory card M has the format shown in FIG. As shown in FIG. 5, an external connection terminal 1 as a contact unit for exchanging data with an external device (not shown), an interface unit 9 connected to the external connection terminal 1, and a memory connected to the interface unit 9 It comprises a control LSI 3 and a memory 4 connected to the memory control LSI 3 and controlling the recording and reproduction of data. The interface unit 9 includes a chip component 5 and other ICs 6.
The memory control LSI 3 includes a control unit 3a for controlling the whole, and an internal memory (second memory) 3b in which a control program for the control unit 3a is recorded and data is recorded.
The memory card M is supplied with a power supply voltage when connected to an external device (not shown).
[First Embodiment]
Next, an embodiment will be described in which in the above-described configuration, authentication of the memory 4 is performed using an authentication key recorded in the internal memory 3b and the memory 4 in a non-rewritable state.
In this case, FIG. As shown in FIG. 6, a unique value as an authentication key is recorded in advance, and is recorded in a non-rewritable manner.
Also, FIG. As shown in FIG. 6, the same authentication key as the authentication key recorded in the internal memory 3b is recorded in a non-rewritable manner.
The memory 4 and the internal memory 3b include a non-rewritable ROM section and a rewritable ROM section, and the authentication key is recorded in the non-rewritable ROM section.
Next, in the above-described configuration, the processing at the time of starting the memory card M or at the time of supplying the power supply voltage from the external device is described in FIG. This will be described with reference to the flowchart shown in FIG.
That is, when the card is activated or when the power supply voltage is supplied from the external device, the control unit 3a performs a self-diagnosis (ST1). As a result of the self-diagnosis, if the diagnosis result is OK (ST2), the control unit 3a reads the authentication key recorded in the memory 4 (ST3), and reads the authentication key recorded in the internal memory 3b (ST4). ) And compare whether they match (ST5).
As a result of this comparison, when the two authentication keys match, the control unit 3a performs authentication (authentication OK) that the memory 4 is correct (ST6), and enters a standby state (ST7).
If the diagnosis is NG in step 2 or the authentication in step 6 is NG, the controller 3a stops the process (ST8).
The case where the authentication in the above step 6 is NG is a case where the result of the comparison in the above step 5 is that the memory 4 is incorrect due to the mismatch of the authentication key.
In the above example, the case where the authentication of the memory 4 is performed when the card is activated or when the power supply voltage is supplied from the external device has been described. it can.
The process of accessing the memory 4 is performed when recording music information or a program supplied from the outside, or when reproducing recorded music information or a program.
It is also possible to use an authentication key stored in the internal memory 3b for authentication with the memory 4 for authentication between the external device and the card M. Furthermore, FIG. As shown in FIG. 8, an internal authentication key K1 used for authentication with the memory 4 and an external authentication key K2 used for authentication with an external device can be stored in the internal memory 3b of the card M.
[Second embodiment]
Next, in the above configuration, the memory control LSI 3 records the previous state (processing mode) information of the memory 4 and records the state of the memory 4 at the next access to the memory 4. An embodiment in which the authentication of the memory 4 is performed based on whether the status information is the same as the status information of the memory 4 will be described.
In this case, the control unit 3a sets the FIG. As shown in FIG. 9, the status information of the memory 4 is recorded in the internal memory 3b. The status information of the memory 4 includes the area (FAT: file allocation table) used in the previous processing, the entire checksum (check value) of the memory 4, and the contents recorded in the memory 4 at the end of the previous processing. Check sum (verification value). As a result, the internal memory 3b stores in the area (FAT: file allocation table) used in the previous processing, the entire checksum of the memory 4, or the checksum of the contents recorded in the memory 4 at the end of the previous processing. Etc. are recorded.
The memory 4 is constituted by a non-volatile memory, and retains the state of the memory previously processed. The internal memory 3b is constituted by a nonvolatile memory, and stores state information of the memory 4.
Next, in the above-described configuration, the authentication processing when performing the access processing to the memory 4 is described with reference to FIG. This will be described with reference to the flowchart shown in FIG.
The access processing to the memory 4 includes recording of music information and a program supplied from the outside, reproduction of the recorded music information and the program, and the like.
That is, when accessing the memory 4, the control unit 3a checks the recording state of the memory 4 (ST11) and determines the area (FAT) used in the previous processing (ST12). Next, the control unit 3a compares whether the determined area (FAT) used in the previous processing and the area (FAT) recorded in the internal memory 3b and used in the previous processing match or not (see FIG. 4). ST13).
As a result of this comparison, when the two match, the control unit 3a performs authentication (authentication OK) that the memory 4 is correct (ST14), and executes an access process to the memory 4 (ST15). As this access processing, for example, data recording (writing) or reproduction (reading) of recorded data is performed.
After executing the access processing, the control unit 3a records (overwrites) the area (FAT) used in the access processing in the internal memory 3b (ST16).
Also, as a result of the comparison in step 13, when the two do not match, the control unit 3a determines that the authentication is NG and stops the access processing (ST17).
In the above example, the FAT has been described as an example of the status information of the memory 4. However, the checksum (verification value) of the entire memory 4 or the checksum (verification value) of the content recorded in the memory 4 at the end of the previous process is described. Value) and the like can be similarly implemented.
At the end of the previous process, FIG. As shown in FIG. 11, when the music information “A” is recorded at the address “AAAA” of the memory 4 with the length “BB”, the recording process of the memory state information and the authentication process are described in FIG. This will be described with reference to the flowchart shown in FIG.
That is, the control unit 3a calculates a checksum (verification value) "CC" for the music information "A" (ST21).
Then, the control unit 3a adds the recording start address “AAAAA” of the memory 4 and the length “BB” of the recording information to the information ID previously assigned to the music information “A” and the calculated checksum (verification). Value) and “CC” to generate memory state information (ST22). As shown in FIG. 13, the data is recorded in the internal memory 3b (ST23).
Then, the control unit 3a confirms the recording state of the memory 4 (ST25) the next time the memory 4 is accessed (ST24), and at the end of the previous processing, starts from the address "AAAAA" of the memory 4 and returns the length " It is determined that the information “BB” has been recorded (ST26).
Next, the control unit 3a calculates a checksum (verified value) “CC” for the information of the length “BB” from the address “AAAAA” of the memory 4 (ST27).
Then, the control unit 3a determines the memory status information based on the determined address “AAAAA”, the length “BB” and the calculated checksum (verification value) “CC” (ST28), and determines the memory status information and the internal memory. A comparison is made as to whether or not the memory status information read from 3b at the time of the previous processing matches (ST29).
As a result of this comparison, when the two match, the control unit 3a performs authentication (authentication OK) that the memory 4 is correct (ST30), and executes an access process to the memory 4 (ST31).
Also, as a result of the comparison in step 29, when the two do not match, the control unit 3a determines that the authentication is NG and stops the access processing (ST32).
[Third Embodiment]
Next, in the above configuration, the encrypted data of the authentication key recorded in the memory 4 in the non-rewritable state, the authentication key recorded in the internal memory 3b in the non-rewritable state, An embodiment in which the memory 4 is authenticated using a program and an encryption key will be described.
In this case, FIG. As shown in FIG. 14, encrypted data obtained by encrypting the authentication key with a unique encryption key is recorded in advance, and is recorded in a non-rewritable manner.
The internal memory 3b contains FIG. As shown in FIG. 14, the same authentication key as the authentication key before encryption of the encrypted data recorded in the memory 4, a decryption program for decrypting the encrypted data recorded in the memory 4, An encryption key for decrypting the encrypted data by the decryption program is recorded in a non-rewritable manner.
The memory 4 and the internal memory 3b include a non-rewritable ROM section and a rewritable ROM section, and the authentication key is recorded in the non-rewritable ROM section.
Next, in the above-described configuration, the authentication process of the memory 4 is performed as shown in FIG. This will be described with reference to the flowchart shown in FIG.
That is, the control section 3a reads the encrypted data recorded in the memory 4 (ST41). Next, the control unit 3a obtains an authentication key by decrypting the read encrypted data with the encryption key recorded in the internal memory 3b based on the decryption program recorded in the internal memory 3b. (ST42). Further, the control unit 3a compares whether or not the obtained authentication key matches the authentication key recorded in the internal memory 3b (ST43).
As a result of this comparison, when the two authentication keys match, the control unit 3a performs authentication (authentication OK) that the memory 4 is correct (ST44),
Also, as a result of the comparison in step 23, when the two do not match, the control unit 3a determines that the authentication is NG (ST45).
It is also possible to use an authentication key stored in the internal memory 3b for authentication with the memory 4 for authentication between the external device and the card M. Furthermore, FIG. As shown in FIG. 16, an internal authentication key K1 used for authentication with the memory 4 and an external authentication key K2 used for authentication with an external device can be stored in the internal memory 3b of the card M.
[Fourth embodiment]
Next, in the configuration as described above, when encrypting the data received from the external device and recording it in the memory 4, the authentication processing according to the third embodiment (steps 41 to 45) and the second An embodiment in which the authentication of the memory 4 is performed using the authentication processing (steps 11 to 14) according to the embodiment will be described.
In this case, FIG. As shown in FIG. 17, encrypted data obtained by encrypting the authentication key with a unique encryption key is recorded in advance, and is recorded in a non-rewritable manner.
The internal memory 3b contains FIG. As shown in FIG. 17, the same authentication key as the authentication key before the encryption of the encrypted data recorded in the memory 4, an encryption program for encrypting data received from the external device, and a program recorded in the memory 4 A decryption program for decrypting encrypted data that has been encrypted, an encryption key used when encrypting received data using the encryption program, and decryption of encrypted data using the decryption program are recorded in a non-rewritable manner. Have been.
The internal memory 3b contains FIG. As shown in FIG. 17, the area (FAT: file allocation table) used in the previous processing, the entire checksum of the memory 4, or the checksum of the contents recorded in the memory 4 at the end of the previous processing is recorded. It is supposed to be.
The memory 4 and the internal memory 3b include a non-rewritable ROM section and a rewritable ROM section, and the authentication key is recorded in the non-rewritable ROM section. The rewritable ROM section is constituted by a non-volatile memory, and retains the state of the previously processed memory.
Next, in the above-described configuration, the authentication processing at the time of receiving data from the external device is described in FIG. This will be described with reference to the flowchart shown in FIG.
That is, when receiving the data from the external device (ST51), the control unit 3a performs the authentication processing according to the third embodiment (ST52), and further performs the authentication processing according to the second embodiment (ST53).
As a result, when each authentication process is OK (ST54), the control unit 3a converts the received data into an encryption key stored in the internal memory 3b based on the encryption program stored in the internal memory 3b. (ST55).
Next, the controller 3a records the encrypted data in the memory 4 (ST56).
After the end of the recording, the control section 3a records (overwrites) the state of the memory 4 in the internal memory 3b (ST57).
The control unit 3a stops the process when any of the authentication processes is NG (ST58).
The same operation as described above is performed when decrypting and reproducing the encrypted data recorded in the memory 4.
The data recorded in the memory 4 may be music information or a program.
It is also possible to use an authentication key stored in the internal memory 3b for authentication with the memory 4 for authentication between the external device and the card M. Furthermore, FIG. As shown in FIG. 19, an internal authentication key K1 used for authentication with the memory 4 and an external authentication key K2 used for authentication with an external device can be stored in the internal memory 3b of the card M.
[Fifth Embodiment]
Next, a usage example of the memory card M having the above-described authentication function will be described.
For example, an example in which the memory card M is used in an Internet connection system is shown in FIG. 20, FIG. This will be described with reference to FIG.
That is, FIG. 20 is a diagram showing an overall configuration of an Internet connection system using the above-mentioned memory card M having a built-in authentication function for memory confirmation.
In FIG. 1, each of electronic devices such as a PC (personal computer) 11, a mobile phone such as a mobile phone 12, an electronic camera 13, and a TV device (television device) 14 is a predetermined portable recording medium, for example. It has a card slot in which a stamp-sized memory card M having a concealed storage area that cannot be directly accessed from the outside can be inserted, and a communication interface (not shown) such as a modem necessary for connection to the Internet 15 or the like.
In the present embodiment, the memory 4 of the memory card M can be connected to the Internet 15 (via the server of the Internet provider, that is, via the provider side) from the electronic device in which the card M is inserted (in the card slot). In this way, the Internet connection information 150 including the user ID, the user password, the mail account, the mail password, the DNS (DNS server address), the access point (connection destination telephone number), and the like is registered. The data format of the Internet connection information 150 registered in the memory 4 of the memory card M is predetermined regardless of the type of various electronic devices such as the PC 11, the mobile phone 12, the electronic camera 13, and the TV device 14. The format is unified.
The PC 11 is automatically activated when the memory card M is inserted into its own card slot, reads out the Internet connection information 150 in a predetermined format from the memory 4 of the card M, and automatically connects to the Internet 15. (Computer-readable) memory 4 in which a specific application program (internet connection setting application program) 110 is recorded. When the memory card M is activated, the built-in authentication process for checking the memory according to the first, second, and third embodiments is performed. In addition, when the authentication of the memory is OK, it is possible to use the authentication key stored in the memory 3b in the memory card M to perform recognition with the PC 11, which is an external device. Then, when these authentications are OK, the specific application program is started.
In addition, other types of electronic devices such as the mobile phone 12, the electronic camera 13, and the TV device 14 also include a (computer-readable) recording medium in which the Internet connection setting application program (hereinafter, referred to as an application) 110 is recorded. It is installed. This recording medium is a ROM, a disk device, a flash memory, or the like. Note that the application 110 may be downloaded via a communication line.
As described above, the electronic device such as the PC 11, the mobile phone 12, the electronic camera 13, or the TV device 14 has the configuration in which the application (Internet connection setting application) 110 is mounted, so that the user can store the Internet connection information 150 in the memory. 4 and simply insert the card M into a card slot of the electronic device (an electronic device such as the PC 11, the mobile phone 12, the electronic camera 13, or the TV device 14) as appropriate. Thus, the device can be easily connected to the Internet 15. Here, since the user is independent of the electronic device used, the user can connect to the Internet 15 from any device by switching and using one memory card M.
In the present embodiment, there is a store that provides a service for registering the Internet connection information 150 in the memory 4 of the memory card M. The customer brings the memory card M to this type of store or purchases the memory card M at the store, and has the store register Internet connection information in the memory 4 of the memory card M. FIG. In 20, the Internet connection information registration service is performed between the mass store 16 and the convenience store 17. For this reason, the mass merchant 16 is provided with a PC 160 on which a computer-readable recording medium on which an application for registering Internet connection information (Internet connection information registration application program) 180 is recorded. The convenience store 17 downloads not only an application (Internet connection information registration application) 180 for registering the Internet connection information in the memory 4 of the memory card M, but also downloads digital contents to the memory card M, MD (mini disk), or the like. An information writing terminal 170 equipped with a recording medium (computer readable) on which an application for recording is recorded is prepared.
As a result of the registration service at the Internet connection information registration service stores such as the mass merchandise store 16 and the convenience store 17, the number of users (the number of subscribers) who have contracted with the Internet provider (hereinafter abbreviated as “provider”) 18 is different for each provider 18. In addition, the total can be calculated for each Internet connection information registration service store. Therefore, each provider 18 may provide a provider of the present system (an Internet connection system using a portable recording medium) and an Internet connection information registration service store (mass sales store 16, convenience store 17, etc.) on a predetermined period basis, for example, on a monthly basis. ), Cashback 19 according to the number of members is performed.
Next, FIG. The Internet connection information registration (writing) service to the memory 4 of the memory card M at the Internet connection information registration service store, for example, the mass merchandise store 16 in the system of FIG. This will be described with reference to FIG.
First, when the user's memory card M is inserted into the card slot of the PC 160 as shown by an arrow a, the Internet connection information registration application 180 is activated. Then, a list screen (provider list screen) 201 of providers (contracted with a company that provides the FIG. 20 system) 201 is displayed on the display of the PC 160.
When the user selects a desired provider on the provider list screen 201, or when a clerk at the mass merchandise store 16 selects a provider requested by the user, the PC 160 follows the application 180 and displays the contents of the membership contract with the selected provider. Is displayed. A confirmation button 202a is provided on this screen 202. When the confirmation button 202a is pressed (selected), the screen is switched to a payment method selection screen 203. When a payment method is selected here, the screen is switched to a mail account creation screen 204. Here, when the candidate of the mail account desired by the user is set, the PC 160 connects to the server 210 of the provider specified by the user via a line (Internet), and transmits the payment method and the mail account specified by the user to the server 210. By sending the request, confirmation is requested as shown by arrow b, and the screen 205 is switched to the online confirmation screen 205.
The server 210 of the user-specified provider checks whether or not the mail account desired by the user has already been assigned to other users in order from the first candidate, and if not, assigns the mail account to the user. To determine. If all candidates have been assigned, the server 210 requests the PC 160 of the mass merchandise store 16 to create a mail account again.
When the server 210 determines to assign a mail account desired by the user, the server 210 further determines a user ID, a user password, and a mail password to be assigned to the user, and includes these information, DNS, and an access point necessary for Internet connection, including an access point. The information is transmitted to the PC 160 of the mass store 16.
Then, the PC 160 of the mass merchant 16 generates Internet connection information 150 in a predetermined format including a user ID, a user password, a mail password, a DNS, and an access point based on the information sent from the server 210 of the provider. The Internet connection information 150 is encrypted with a media key Km, which will be described later, according to a predetermined algorithm, and starts writing to the memory 4 of the memory card M installed in the card slot of the PC 160, and switches to the information writing screen 206. .
When a write operation is performed on the memory 4 of the memory card M, the above-described authentication processing of the fourth embodiment is performed. In addition, when the authentication of the memory is OK, it is possible to use the authentication key stored in the memory 3b in the memory card M to perform recognition with the PC 11, which is an external device. Then, when these authentications are OK, the writing operation is started.
When the PC 160 finishes writing the Internet connection information 150 to the memory 4 of the memory card M, the PC 160 switches to an inquiry screen 207 for asking the user whether to protect the information of the memory card M with a password.
If password protection is requested, PC 160 prompts the user to specify a password. The PC 160 encrypts the password specified by the user according to a predetermined algorithm and writes the encrypted password on the memory card M. The encrypted password serves as a key for taking out the media key from the memory card M. After writing the password 311 on the memory card 15, the PC 160 completes a series of Internet connection information writing processing, that is, user registration processing. In this case, the PC 160 switches to the screen 208 indicating the completion of the user registration, and notifies the user of the completion of the user registration to the contract count server 211 of the business operator (system providing company) that has developed the present system, for example, via the Internet as indicated by an arrow c. I do. On the other hand, when the protection with the password is not requested, the PC 160 immediately switches to the user registration completion screen 208 and notifies the contract count server 211 of the completion of the user registration as shown by an arrow c. The user registration completion notification also includes information on the provider contracted by the user.
The contract count server 211 counts (aggregates) the number of users who have contracted with each provider (the number of subscribers) for each provider and for each Internet connection information registration service store such as the mass merchandise store 16. Therefore, when notified of the completion of the user registration from the PC 160 of the mass merchandise store 16, the contract count server 211 counts up the number of subscribers to the notified provider by one, and provides an Internet connection information registration service for connecting to the provider. The number of subscribers handled by the store (the mass merchandising store 16) that performed the above is incremented by one.
As described above, key data is written in an area of the memory to prevent forgery of the memory card, the key data is authenticated by the memory control LSI, and the memory can be accessed only when the key data matches.
For this reason, even if a memory having a large memory capacity is replaced, the memory cannot be accessed because the authentication of the memory control LSI does not match.
Similarly, even if an attempt is made to reuse several memories for one memory control LSI, the memories cannot be accessed because the authentications do not match.
It is also effective to encrypt the key data so that the key data in the memory is not analyzed.
Industrial applicability
The present invention incorporates a memory for recording data, a control unit for controlling recording of data in the memory or controlling reproduction of data recorded in the memory, and an internal memory used by the control unit. In a memory card including a memory control LSI, the control unit determines whether the memory is correct based on whether an authentication key recorded in the memory matches an authentication key recorded in the internal memory. Determine whether or not.
[Brief description of the drawings]
FIG. FIG. 1 is a diagram showing an internal configuration of a memory card of the present invention.
FIG. 2 is a diagram showing an internal configuration of a memory card.
FIG. FIG. 3 is a diagram showing a cross-sectional configuration inside the memory card.
FIG. 4 is a diagram showing an internal configuration of the memory card.
FIG. 5 is a diagram showing a control block of the memory card.
FIG. 6 and 8 are diagrams for explaining an example of recording an authentication key in the first embodiment.
FIG. FIG. 7 is a flowchart for explaining a process at the time of starting the memory card or a process at the time of supplying power supply voltage in the first embodiment.
FIG. 9 is a diagram for explaining a recording example of state information of a memory according to the second embodiment.
FIG. 10 is a flowchart illustrating an authentication process according to the second embodiment.
FIG. FIG. 11 is a diagram illustrating a recording state of the last music information of a previous process in the memory of the memory card according to the second embodiment.
FIG. 12 is a flowchart for explaining recording processing and authentication processing of memory state information according to the second embodiment.
FIG. 13 is a diagram illustrating a recording example of memory state information of an internal memory according to the second embodiment.
FIG. 14 and 16 are diagrams for explaining an example of recording of encrypted data, an authentication key, an encryption key, and a decryption program in the third embodiment.
FIG. 15 is a flowchart illustrating an authentication process according to the third embodiment.
FIG. 17 and 19 are diagrams for explaining examples of recording of encrypted data, an authentication key, an encryption key, a decryption program, and an encryption program in the fourth embodiment.
FIG. 18 is a flowchart illustrating an authentication process according to the fourth embodiment.
FIG. FIG. 20 is a diagram illustrating an overall configuration of an Internet connection system according to a fifth embodiment.
FIG. 21 is a diagram for explaining an Internet connection information registration service for a memory card in a mass retailer in the Internet connection system according to the fifth embodiment.

Claims (20)

A board on which wiring is applied;
A first memory mounted on the board and recording data and an authentication key;
A second memory in which data is recorded and an authentication key is recorded, and a control unit which controls recording of data in the first memory and controls reproduction of data recorded in the first memory. And a control circuit formed of a chip, mounted on the substrate, and connected to the substrate,
The control unit determines whether the first memory is correct by checking whether the authentication key recorded in the first memory matches the authentication key recorded in the second memory. A portable electronic medium characterized by determining. The portable electronic medium according to claim 1,
The first memory is mounted on the substrate by soldering,
The second memory includes a bare chip and is mounted on the substrate. The portable electronic medium according to claim 1,
The first and second memories record the authentication key in a non-rewritable state. The portable electronic medium according to claim 1,
A part of each of the first and second memories is constituted by a ROM, and an authentication key is recorded in these ROMs. The portable electronic medium according to claim 1,
The first memory and the control circuit are mounted on one surface of the substrate,
The other surface of the substrate is provided with external connection terminals plated with hard gold. The portable electronic medium according to claim 1,
The control program of the control unit is recorded in the second memory. A board on which wiring is applied;
A first memory mounted on the board and recording data;
A second memory in which data is recorded and status information of the first memory is recorded, and a recording of data in the first memory is controlled, and a reproduction of data recorded in the first memory is performed. And a control unit that is configured with a chip, is mounted on the substrate, and comprises a control circuit connected to the substrate.
The control unit determines whether or not the first memory is correct based on whether or not the state of the first memory matches the state information of the first memory recorded in the second memory. A portable electronic medium characterized by determining. The portable electronic medium according to claim 7,
The first memory is mounted on the substrate by soldering,
The second memory includes a bare chip and is mounted on the substrate. The portable electronic medium according to claim 7,
The first and second memories are nonvolatile memories. The portable electronic medium according to claim 7,
The first memory is a non-volatile memory, a part of the second memory is a non-volatile memory, and the non-volatile memory of the second memory stores state information of the first memory. Is recorded. The portable electronic medium according to claim 7,
The first memory and the control circuit are mounted on one surface of the substrate,
The other surface of the substrate is provided with external connection terminals plated with hard gold. The portable electronic medium according to claim 7,
The control program of the control unit is recorded in the second memory. The portable electronic medium according to claim 7,
The state information of the first memory includes the area of the first memory used in the previous processing, a check value of the content recorded in the first memory at the end of the previous processing, and the entirety of the first memory. Is at least one of the calculated values. The portable electronic medium according to claim 13,
The area of the first memory includes the start address of the first memory and the length of processed data. A board on which wiring is applied;
A first memory mounted on the board and recording data and recording encrypted data obtained by encrypting an authentication key;
A second memory in which data is recorded and an authentication key, an encryption key, and a decryption program are recorded; and recording of data in the first memory is controlled or recorded in the first memory. A control unit for controlling the reproduction of data is constituted by a chip, mounted on the board, and comprises a control circuit connected to the board;
The control unit decrypts the encrypted data recorded in the first memory into an authentication key by using an encryption key and a decryption program recorded in the second memory. A portable electronic medium, wherein whether or not the first memory is correct is determined based on whether or not the authentication key recorded in the second memory matches. The portable electronic medium according to claim 15,
The first memory is mounted on the substrate by soldering,
The second memory includes a bare chip and is mounted on the substrate. The portable electronic medium according to claim 15,
The first and second memories are nonvolatile memories. The portable electronic medium according to claim 15,
A part of each of the first and second memories is a non-volatile memory, and encrypted data is recorded in the non-volatile memory of the first memory, and the non-volatile memory of the second memory is used. , An authentication key, an encryption key, and a decryption program are recorded. The portable electronic medium according to claim 15,
The first memory and the control circuit are mounted on one surface of the substrate,
The other surface of the substrate is provided with external connection terminals plated with hard gold. The portable electronic medium according to claim 15,
The control program of the control unit is recorded in the second memory.

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