JP7431098B2 - information processing equipment - Google Patents

Description

The present invention relates to a technique for combining information groups.

In recent years, the importance of digital marketing, which analyzes vast amounts of consumer behavior data and uses it for marketing, has increased. For example, in Patent Document 1, the purchase history and customer attributes of common customers of two companies are analyzed to find a correlation, and it is assumed that the purchase rate of the other company's products is high among the customers of one company. It states that customers are extracted and the other company obtains that customer's information to promote sales.

Japanese Patent Application Publication No. 2001-23047

An object of the present invention is to enable a first information group and a second information group including information identified by a common information identifier to be combined in a state where each information identifier cannot be specified.

In order to solve the above problems, the present invention adds random data common to other information processing devices to the information identifier that identifies each piece of information included in the first information group, and then converts the information using an irreversible conversion algorithm. , a generation unit that generates the first information group after conversion, and the other information processing device that adds the common random data to an information identifier that identifies each piece of information included in the second information group, and then performs the irreversible conversion. an acquisition unit that acquires a converted second information group generated through a conversion process using an algorithm, the generated first information group after conversion, and the acquired second information group after conversion. a combining unit that combines the information based on the information identifier after conversion; and a combining unit that combines the information identifiers based on the information identifier after conversion, and stores fragmented data in which the random data added to the information identifier in the conversion is fragmented in cooperation with the other information processing device. Provided is an information processing device characterized by having a storage unit that stores information.

According to the present invention, it is possible to combine a first information group and a second information group that include information identified by a common information identifier without being able to identify each information identifier.

1 is a diagram showing an example of the configuration of an information processing system 1 according to an embodiment of the present invention. It is a diagram showing the hardware configuration of an information holding device 10a. 2 is a diagram showing a hardware configuration of a management device 20. FIG. 1 is a diagram showing a functional configuration of an information processing system 1. FIG. 1 is a diagram illustrating an example of the operation of the information processing system 1. FIG. 1 is a diagram illustrating how information is processed by the information processing system 1. FIG. 1 is a diagram illustrating how information is processed by the information processing system 1. FIG. 1 is a diagram illustrating how information is processed by the information processing system 1. FIG. 1 is a diagram illustrating how information is processed by the information processing system 1. FIG. 1 is a diagram illustrating how information is processed by the information processing system 1. FIG. 1 is a diagram illustrating how information is processed by the information processing system 1. FIG. 1 is a diagram illustrating how information is processed by the information processing system 1. FIG. 1 is a diagram illustrating how information is processed by the information processing system 1. FIG. 1 is a diagram illustrating how information is processed by the information processing system 1. FIG.

[composition]
FIG. 1 is a diagram showing an example of an information processing system 1 according to the present embodiment. As shown in FIG. 1, the information processing system 1 includes an information holding device 10a that functions as a first information processing device managed by a first information holder that holds a first information group, and a second information group. An information holding device 10b that functions as a second information processing device managed by a second information holder, and a management device 20 that functions as a third information processing device that is separate from the first information processing device and the second information processing device. , and a network 2 including a wireless communication network or a wired communication network that communicably connects these. The information holding device 10a, the information holding device 10b, and the management device 20 may be realized by a single computer, or may be realized by a collection of multiple computers. Note that the information holding device 10a, the information holding device 10b, and the management device 20 may be communicably connected via the network 2 illustrated in FIG. 1, or may be communicably connected via a dedicated line not shown. may have been done.

FIG. 2 is a diagram showing the hardware configuration of the information holding device 10a. The information holding device 10a is physically configured as a computer including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus connecting these devices, and the like. Each of these devices is operated by power supplied from a power source (not shown). In addition, in the following description, the word "apparatus" can be read as a circuit, a device, a unit, etc. The hardware configuration of the information holding device 10a may be configured to include one or more of the devices shown in FIG. 2, or may be configured without including some of the devices. Furthermore, the information holding device 10a may be configured by communicatively connecting a plurality of devices each having a different housing.

Each function in the information holding device 10a is performed by loading predetermined software (programs) onto hardware such as the processor 1001 and memory 1002, so that the processor 1001 performs calculations, controls communication by the communication device 1004, and controls communication by the communication device 1004. This is realized by controlling at least one of reading and writing data in the storage 1002 and the storage 1003.

The processor 1001, for example, operates an operating system to control the entire computer. The processor 1001 may be configured by a central processing unit (CPU) including an interface with a peripheral device, a control device, an arithmetic device, a register, and the like. Further, for example, a baseband signal processing unit, a call processing unit, etc. may be realized by the processor 1001.

The processor 1001 reads programs (program codes), software modules, data, etc. from at least one of the storage 1003 and the communication device 1004 to the memory 1002, and executes various processes in accordance with the programs. As the program, a program that causes a computer to execute at least a part of the operations described below is used. The functional blocks of the information holding device 10a may be realized by a control program stored in the memory 1002 and operated in the processor 1001. Various types of processing may be executed by one processor 1001, or may be executed simultaneously or sequentially by two or more processors 1001. Processor 1001 may be implemented by one or more chips. Note that the program may be transmitted to the information holding device 10a via the network 2.

The memory 1002 is a computer-readable recording medium, and includes at least one of ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory), and the like. may be done. Memory 1002 may be called a register, cache, main memory, or the like. The memory 1002 can store executable programs (program codes), software modules, etc. for implementing the method according to the present embodiment.

The storage 1003 is a computer-readable recording medium, such as an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (such as a compact disk, a digital versatile disk, or a Blu-ray disk). (registered trademark disk), smart card, flash memory (eg, card, stick, key drive), floppy disk, magnetic strip, etc. Storage 1003 may also be called an auxiliary storage device.

The communication device 1004 is hardware (transmission/reception device) for communicating between computers via the network 2, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, or the like. Further, a transmitting/receiving antenna, an amplifier section, a transmitting/receiving section, a transmission line interface, etc. may be realized by this communication device 1004. The transmitting and receiving unit may be physically or logically separated into a transmitting unit and a receiving unit.

The input device 1005 is an input device (eg, key, microphone, switch, button, etc.) that accepts input from the outside. The output device 1006 is an output device (for example, a display, a speaker, an LED lamp, etc.) that performs output to the outside. Note that the input device 1005 and the output device 1006 may have an integrated configuration (for example, a touch panel).

Each device, such as the processor 1001 and the memory 1002, is connected by a bus for communicating information. The bus may be configured using a single bus, or may be configured using different buses for each device.

The information holding device 10a includes hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), and a field programmable gate array (FPGA). A part or all of each functional block may be realized by the hardware. For example, processor 1001 may be implemented using at least one of these hardwares.

The hardware configuration of the information holding device 10b is the same as that of the information holding device 10a.

FIG. 3 is a diagram showing the hardware configuration of the management device 20. Physically, the management device 20 is configured as a computer that includes a processor 2001, a memory 2002, a storage 2003, a communication device 2004, an input device 2005, an output device 2006, and a bus connecting these devices, just like the information holding device 10a. ing. Each of these devices is operated by power supplied from a power source (not shown). The hardware configuration of the management device 20 may be configured to include one or more of each device shown in FIG. 3, or may be configured not to include some of the devices. Furthermore, the management device 20 may be configured by communicatively connecting a plurality of devices each having a different housing.

Each function in the management device 20 is performed by loading predetermined software (programs) onto hardware such as the processor 2001 and the memory 2002, so that the processor 2001 performs calculations, controls communication by the communication device 2004, and controls the communication by the communication device 2004. This is realized by controlling at least one of data reading and writing in the storage 2003. The processor 2001, memory 2002, storage 2003, communication device 2004, input device 2005, output device 2006, and the bus that connects these devices are the same as the processor 1001, memory 1002, storage 1003, communication device 1004, and input device described for the information holding device 10a. 1005, the output device 1006, and the bus that connects them are the same hardware, so a description thereof will be omitted.

FIG. 4 is a block diagram showing the functional configuration of the information processing system 1. As shown in FIG. In the information holding device 10a, the storage unit 11a stores the first information group. In the information holding device 10b, the storage unit 11b stores the second information group. Here, FIG. 6 is a diagram illustrating the first information group. In FIG. 6, each piece of information consists of a set of data corresponding to a plurality of information items A1, A2, A3, . . . . In other words, each record in FIG. 6 corresponds to one piece of information. Each piece of information (each record in FIG. 6) is identified by an information identifier. For example, for information consisting of data "30" corresponding to information item A1, data "1110" corresponding to information item A2, data "10" corresponding to information item A3, etc., the information identifier "1111" is used. This information identifier "1111" is used to identify information to which other information identifiers have been assigned (in the example of FIG. 6, information identifiers "2222", "4444", etc.) are assigned. information). In other words, information consisting of data "30" corresponding to information item A1, data "1110" corresponding to information item A2, data "10" corresponding to information item A3, etc. is called information regarding information identifier "1111". It turns out.

Next, FIG. 7 is a diagram illustrating the second information group. In FIG. 6, each piece of information consists of a set of data corresponding to a plurality of information items B1, B2, B3, . . . , and each piece of information (each record in FIG. 7) is identified by an information identifier. In other words, each record in FIG. 7 corresponds to one piece of information. For example, for information consisting of data "300" corresponding to information item B1, data "112565" corresponding to information item B2, data "1" corresponding to information item B3, etc., the information identifier "1111" is used. This information identifier "1111" is used to identify information to which other information identifiers have been assigned (in the example of FIG. 7, information identifiers "2222", "3333", etc.) are assigned. information). In other words, information consisting of data "300" corresponding to information item B1, data "112565" corresponding to information item B2, data "1" corresponding to information item B3, etc. is called information regarding information identifier "1111". It turns out.

Here, the information identifier in the first information group and the information identifier in the second information group are the same information identifier when they refer to the same object. That is, data "30" corresponding to information item A1, data "1110" corresponding to information item A2, data "10" corresponding to information item A3, identified by information identifier "1111" in the first information group. ..., data "300" corresponding to information item B1, identified by information identifier "1111" in the second information group, data "112565" corresponding to information item B2, and data corresponding to information item B3. Information consisting of data "1"... is information about the same object.

In the first information group, the information identified by the information identifier "1111" includes data "30" corresponding to information item A1, data "1110" corresponding to information item A2, and data "10" corresponding to information item A3. ”, etc. are included, but data “300” corresponding to information item B1, data “112565” corresponding to information item B2, data “1” corresponding to information item B3, etc. are not included. do not have. In other words, the first information holder and the second information holder hold different information regarding the same information identifier.

A person who owns a group of information may want to analyze the group of information and, for example, find a correlation between these pieces of information. In this case, the more items there are in the information group, the more sophisticated and diverse analysis can be performed. For this reason, there is a need to exchange the information held by the first information holder and the second information holder, and to perform such an analysis while increasing the number of items in the information group. However, for example, in a situation where neither party has concluded a confidentiality agreement, etc., it would be undesirable in terms of information management to exchange information sets held by each party without anonymizing the information identifiers included in the information sets held by the other party. There may be no. For example, in the examples of FIGS. 6 and 7, if the first information holder receives the information group shown in FIG. 7 from the second information holder, the information identifier "1111" included in the information group held by the first information holder is ”, data “300” corresponding to information item B1, data “112565” corresponding to information item B2, data “1” corresponding to information item B3, etc. can be specified. Therefore, in this embodiment, information holders exchange a group of information held by each other in a state in which the information identifier cannot be specified, and a group of information held by oneself and a group of information received from the other party cannot be specified by the information identifier. The purpose is to connect in a state. In other words, the first information group and the second information group including information identified by a common information identifier can be combined without being able to identify each information identifier.

The information identifier included in the first information group and the information identifier included in the second information group may be partially the same or partially different. For example, the first information group illustrated in FIG. 6 includes information identified by the information identifier "4444," while the second information group illustrated in FIG. 7 includes information identified by the information identifier "4444." No information is included. On the other hand, for example, the second information group illustrated in FIG. 7 includes information identified by the information identifier "3333," but the first information group illustrated in FIG. 6 includes information identified by the information identifier "3333." It does not contain any information.

Returning to the explanation of FIG. 4, in the management device 20, the issuing unit 21 issues random data called a salt value. A salt value is random data that is added to the hashing target when hashing using a hash function. In this embodiment, the salt value is an example of random data used in the present invention, and is not necessarily limited to this.

In the information holding device 10a, the generation unit 12a adds a salt value to an information identifier that identifies each piece of information included in the first information group, and then converts the information using a hash function to generate the converted first information group. generate. Similarly, in the information holding device 10b, the generation unit 12b adds the same salt value used by the generation unit 12a to the information identifier that identifies each piece of information included in the second information group, and then A converted second information group is generated through a conversion process using the same hash function used by 12a. The conversion and generation processing by these generation units 12a and 12b will be described in detail later. Note that although a hash function is used as an example of an irreversible conversion algorithm in this embodiment, the irreversible conversion algorithm used in the present invention is not necessarily limited to this.

In the information holding device 10a, the transmitter 13a transmits the converted first information group generated by the generator 12a to the management device 20. Similarly, in the information holding device 10b, the transmitter 13b transmits the converted second information group generated by the generator 12b to the management device 20.

In the management device 20, the providing unit 22 provides the converted first information group sent from the information holding device 10a to the information holding device 10b, and also provides the converted first information group sent from the information holding device 10b. The second information group is provided to the information holding device 10a.

In the information holding device 10a, the obtaining unit 14a obtains the converted second information group generated in the information holding device 10b and provided by the providing unit 22. In the information holding device 10b, the obtaining unit 14b obtains the converted first information group generated in the information holding device 10a and provided by the providing unit 22.

In the information holding device 10a, the combining unit 15a converts the converted first information group generated by the generation unit 12a and the converted second information group acquired by the acquisition unit 14a into a converted information identifier. Combine based on. In the information holding device 10b, the combining unit 15b converts the converted first information group generated by the generating unit 12b and the converted second information group acquired by the acquiring unit 14b into a converted information identifier. Combine based on.

In the information holding device 10a, the analysis unit 16a analyzes the converted first information group and the converted second information group combined by the combining unit 15a using the converted information identifier. In the information holding device 10b, the analysis unit 16b analyzes the converted first information group and the converted second information group combined by the combining unit 15b using the converted information identifier. This analysis is, for example, an analysis of determining the correlation between each piece of information included in the first information group after conversion and the second information group after conversion.

In the information holding device 10a, the deletion unit 17a deletes the salt value at some point after the salt value is used by the generation unit 12a. In the information holding device 10b, the deletion unit 17b deletes the salt value at some point after the salt value is used by the generation unit 12b. Furthermore, in the management device 20, the deletion unit 23 deletes the salt value at some point after providing the salt value to the information holding device 10a and the information holding device 10b.

[motion]
Next, the operation of the information processing system 1 will be described with reference to FIG. 5. In the following description, when the information holding device 10a is described as a main body of processing, specifically, the processor 1001 is implemented by loading predetermined software (program) onto hardware such as the processor 1001 and the memory 1002. This means that processing is executed by performing calculations and controlling communication by the communication device 1004 and reading and/or writing of data in the memory 1002 and storage 1003. The same applies to the information holding device 10b and the management device 20. Note that each process disclosed below is an example when implementing the present invention. Therefore, all of the following processes are not essential, and any of the processes may be omitted.

First, the generation units 12a and 12b of the information holding device 10a and the information holding device 10b each request the management device 20 to issue a salt value (steps S11 and S12). The issuing unit 21 of the management device 20 issues a salt value in response to this request (step S13), and transmits it to the information holding device 10a and the information holding device 10b, respectively (steps S14, S15). On the condition that the transmission of the salt value is completed, the deletion unit 23 deletes the issued salt value in the management device 20 (step S16).

Next, the generation units 12a and 12b of the information holding device 10a and the information holding device 10b each add a salt value to the information identifier included in the information group stored in the own device, and through a process of hashing it using a hash function, A converted information group is generated (steps S17, S18). The processing in steps S17 and S18 will be explained with reference to FIGS. 6 to 13.

The generation unit 12a of the information holding device 10a first replaces each information item with a random character string in the first information group illustrated in FIG. As a result, in the first information group illustrated in FIG. 6, the information items A1, A2, A3, etc. are changed to random character strings "ksaroei", "uaiejri", "wjuhkrs", etc., respectively, as illustrated in FIG. Replaced with... As this replacement algorithm, the information holding device 10a may adopt any algorithm, as long as it is an algorithm that the second information holder cannot know.

Next, in the information holding device 10a, the generation unit 12a normalizes the data forming each piece of information in the first information group. Here, each column of the first information group is normalized within the range of minimum value "0" to maximum value "1". As a result, in the first information group illustrated in FIG. 8, each data becomes a normalized value within the range of the minimum value "0" to the maximum value "1" as illustrated in FIG.

Next, in the information holding device 10a, the generation unit 12a further generalizes the normalized values in the first information group. Here, the value at the second decimal place of the normalized value is rounded off to the nearest 0.1. As a result, in the first information group illustrated in FIG. 9, each data has a value of 0.1 unit as illustrated in FIG. 10.

Next, in the information holding device 10a, the generation unit 12a extracts records in which the data (values in units of 0.1 in FIG. 10) forming the information identified by each information identifier are the same, and If there are no more than k records (k is a natural number of 2 or more), delete the record. Here, for example, k=2, and the combination of values "1", "0.3", "0.9", etc. in the record identified by the information identifier "2222" in FIG. 10 is not found in other records. Assume that In this case, since there is no record k=2 or more containing the same information as this record, this record is deleted, resulting in a state as shown in FIG. 11. The fact that the combination of values "1", "0.3", "0.9", etc. in the record identified by the information identifier "2222" does not exist in other records means that the record corresponding to this combination of values Since it is uniquely identified as a record identified by the information identifier "2222," such a record is deleted. Note that in FIG. 11, "-" means that there is no data (NULL).

Next, in the information holding device 10a, the generation unit 12a adds a salt value to each information identifier in the first information group illustrated in FIG. 11, and then hashes the information. As a result, in the first information group illustrated in FIG. 11, the information identifiers "1111", "4444", etc. are converted into hash values "39fe3e93d1d9", "19b5fd1059a9", etc., respectively, as illustrated in FIG. 12. The state will be as follows. Further, the generation unit 12a performs at least one of a permutation process in which the order of each record (in the row direction) is randomly permuted, and an insertion process in which meaningless data is inserted at an arbitrary position between each record. In this state, since the information identifier is replaced with a hash value by the hash function, which is an irreversible conversion algorithm, even if the first information holder who owns the first information group has the information identifier before hashing, cannot be determined. In other words, it is not possible to recognize which information identifier the information included in each record in FIG. 12 relates to.

Processing similar to the above is also performed in the information holding device 10b. As a result, the information identifier included in the second information group illustrated in FIG. 7 is replaced with a hash value as illustrated in FIG. 13. Further, at least one of a permutation process in which the order of each record (in the row direction) is randomly permuted, and an insertion process in which meaningless data is inserted at an arbitrary position between each record is performed. Even in this state, since the information identifier is replaced with a hash value by the hash function, even the second information holder who owns the second information group cannot identify the information identifier before hashing. Can not. In other words, even the second information holder who owns the second information group cannot recognize which information identifier the information included in each record in FIG. 13 relates to.

However, as described above, if the information identifier in the first information group before conversion and the information identifier in the second information group before conversion refer to the same object, they are the same information identifier. As described above, since the information identifiers are hashed using the same method in the information holding device 10a and the information holding device 10b, the hashed information identifiers that mean the same object in FIGS. 12 and 13 are , have the same hash value. For example, "39fe3e93d1d9" is the hash value (hashed information identifier) included in the topmost record in FIG. 12, and "39fe3e93d1d9" is the hash value (hashed information identifier) included in the topmost record in FIG. "39fe3e93d1d9" is the same. Therefore, even if the first information holder and the second information holder cannot recognize which information identifier the information contained in each record illustrated in FIGS. 12 and 13 relates to, the same hash By using the value (hashed information identifier) as a matching key, it becomes possible to combine information groups related to the same object.

Returning to the explanation of FIG. 5, in the information holding device 10a, the deletion unit 17a deletes the salt value used in the process of step S17 on the condition that the process of step S17 is completed (step S20). In the information holding device 10b, the deletion unit 17b deletes the salt value used in the process of step S18, on the condition that the process of step S18 is completed (step S21).

Next, the converted first information group and the converted second information group are provided between the information holding device 10a and the information holding device 10b (step S22). That is, in the information holding device 10a, the transmitter 13a transmits the converted first information group generated by the generator 12a to the management device 20. Similarly, in the information holding device 10b, the transmitter 13b transmits the converted second information group generated by the generator 12b to the management device 20. Accordingly, in the management device 20, the providing unit 22 provides the converted first information group sent from the information holding device 10a to the information holding device 10b, and also provides the converted first information group sent from the information holding device 10b. Then, the converted second information group is provided to the information holding device 10a. Thereby, in the information holding device 10a, the obtaining unit 14a obtains the converted second information group, and in the information holding device 10b, the obtaining unit 14b obtains the converted first information group.

Next, in the information holding device 10a, the combining unit 15a converts the first information group after conversion generated by the generation unit 12a and the second information group after conversion acquired by the acquisition unit 14a into The information is combined based on the information identifier (step S23). For example, when the first information group after conversion illustrated in FIG. 12 and the second information group after conversion illustrated in FIG. 13 are combined, the state illustrated in FIG. 14 is created based on the hashed information identifier. becomes. For example, for the hashed information identifier "39fe3e93d1d9", the first information group after conversion and the second information group after conversion are combined. Similarly, in the information holding device 10b, the combining unit 15b converts the converted second information group generated by the generating unit 12b and the converted first information group acquired by the acquiring unit 14b into a hashed form. The information identifiers are combined based on the information identifiers (step S24).

Thereafter, in the information holding device 10a, the analysis unit 16a analyzes the converted first information group and the converted second information group combined by the combining unit 15a using the converted information identifier ( Step S25). Similarly, in the information holding device 10b, the analysis unit 16b analyzes the converted first information group and the converted second information group combined by the combining unit 15b using the converted information identifier (step S26).

Through this analysis, if some correlation is recognized between the first information group after conversion and the second information group after conversion, and it is assumed that there is a useful use, the first information holder and the second information group After the holder puts the information into a desirable state for information management, such as by signing a non-disclosure agreement, the holder exchanges the first information group and the second information group that have not been converted as described above, and performs a more detailed analysis. Just go.

According to the embodiment described above, the first information group and the second information group including information identified by a common information identifier can be combined without being able to identify each information identifier.

[Modified example]
The invention is not limited to the embodiments described above. The embodiment described above may be modified as follows. Furthermore, two or more of the following modifications may be implemented in combination.
[Modification 1]
In the present invention, the information identifier may be anything that has the function of identifying information, and may be an identifier individually assigned to each piece of information as illustrated in FIGS. 6 and 7. , this information identifier may be configured by a combination of information included in each record in FIGS. 6 and 7. In other words, the combination of information itself can be an information identifier.

[Modification 2]
In the embodiment, a management device that issues a salt value is provided separately from the information holding devices 10a and 10b, but one of the information holding devices 10a and 10b has a function of issuing a salt value and notifying the other. may be provided. Further, the condition for deleting the salt value may be that hashing is completed as exemplified in the embodiment, or may be that a predetermined period of time has elapsed.

[Modification 3]
The k used in the embodiment may be a predetermined fixed value or may be a value that changes depending on conditions. For example, as the value of k increases, the number of records to be deleted increases, and therefore the number of information groups provided to the information holder with whom information is exchanged decreases. For this reason, for example, if the range of the number of information groups to be exchanged with each other is determined, the generation units 12a and 12b may increase the value of k until the range of the number is reached. For example, before the processing in steps S17 and S18, if the total number of information groups is 10000 and the number of information groups to be exchanged is determined to be 1000, the generation units 12a and 12b delete based on the value of k. The value of k is increased until the number of subsequent information groups reaches approximately 1000.

[Modification 4]
Instead of deleting the salt value, the information holding devices 10a and 10b may each hold fragment data obtained by fragmenting the salt value. Fragmentation here means converting a salt value into multiple pieces of data that can restore the salt value. For example, a method of dividing the salt value into a plurality of pieces and using each piece of divided data as fragment data is conceivable, but the present invention is not limited to this, and any fragmentation method may be adopted. In other words, the information holding devices 10a and 10b may include a storage unit that stores fragment data obtained by fragmenting random data added to the information identifier during conversion in cooperation with other information holding devices.

[Modification 5]
In the above embodiment, the first information group after conversion and the second information group after conversion are transmitted and received between the information holding device 10a and the information holding device 10b via the management device 20, but these information groups The exchange does not necessarily need to go through the management device 20. For example, between the administrator of the information holding device 10a and the administrator of the information holding device 10b, a group of information stored in a predetermined storage medium or the like is exchanged and read into the information holding device 10a and the information holding device 10b. You may adopt any method such as. In other words, the acquisition unit 14a of the information holding device 10a and the acquisition unit 14b of the information holding device 10b may acquire these information groups using any method.

[Other variations]
It should be noted that the block diagram used to explain the above embodiment shows blocks in functional units. These functional blocks (components) are realized by any combination of at least one of hardware and software. Furthermore, the method for realizing each functional block is not particularly limited. That is, each functional block may be realized using one physically or logically coupled device, or may be realized using two or more physically or logically separated devices directly or indirectly (e.g. , wired, wireless, etc.) and may be realized using a plurality of these devices. The functional block may be realized by combining software with the one device or the plurality of devices.

Functions include judgment, decision, judgment, calculation, calculation, processing, derivation, investigation, exploration, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, consideration, These include, but are not limited to, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assigning. I can't. For example, a functional block (configuration unit) that performs transmission is called a transmitting unit or a transmitter. In either case, as described above, the implementation method is not particularly limited.

For example, an information holding device, a management device, or the like in an embodiment of the present disclosure may function as a computer that performs the processing of the present disclosure.

Each aspect/embodiment described in this disclosure applies to LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), and 5G (5th generation mobile communication system). system), FRA (Future Radio Access), NR (new Radio), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark) )), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, UWB (Ultra-WideBand), Bluetooth (registered trademark), and systems that utilize and are extended based on these. It may be applied to at least one next generation system. Furthermore, a combination of a plurality of systems may be applied (for example, a combination of at least one of LTE and LTE-A and 5G).

The present invention may be conceived as a method invention. In other words, the present invention includes a generation step of generating a converted first information group through a process of converting information identifiers for identifying each piece of information included in the first information group using an irreversible conversion algorithm, and the other information processing. an acquisition step of acquiring a converted second information group generated through a process of converting an information identifier for identifying each piece of information included in the second information group by the irreversible conversion algorithm in the device; and the generated conversion. Provided is an information processing method comprising: a combining step of combining the subsequent first information group and the acquired converted second information group based on the converted information identifier. It may be. Further, the order of the processing procedures, sequences, flowcharts, etc. of each aspect/embodiment described in this disclosure may be changed as long as there is no contradiction. For example, the methods described in this disclosure use an example order to present elements of the various steps and are not limited to the particular order presented.

The input/output information may be stored in a specific location (eg, memory) or may be managed using a management table. Information etc. to be input/output may be overwritten, updated, or additionally written. The output information etc. may be deleted. The input information etc. may be transmitted to other devices.

Judgment may be made using a value expressed by 1 bit (0 or 1), a truth value (Boolean: true or false), or a comparison of numerical values (for example, a predetermined value). (comparison with a value).

Although the present disclosure has been described in detail above, it is clear to those skilled in the art that the present disclosure is not limited to the embodiments described in the present disclosure. The present disclosure can be implemented as modifications and variations without departing from the spirit and scope of the present disclosure as determined by the claims. Therefore, the description of the present disclosure is for the purpose of illustrative explanation and is not intended to have any limiting meaning on the present disclosure.

Software includes instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, whether referred to as software, firmware, middleware, microcode, hardware description language, or by any other name. , should be broadly construed to mean an application, software application, software package, routine, subroutine, object, executable, thread of execution, procedure, function, etc. Additionally, software, instructions, information, etc. may be sent and received via a transmission medium. For example, if the software uses wired technology (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.) and/or wireless technology (infrared, microwave, etc.) to When transmitted from a server or other remote source, these wired and/or wireless technologies are included within the definition of transmission medium.

The information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc., which may be referred to throughout the above description, may refer to voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. It may also be represented by a combination of
Note that terms explained in this disclosure and terms necessary for understanding this disclosure may be replaced with terms having the same or similar meanings.

In addition, the information, parameters, etc. described in this disclosure may be expressed using absolute values, relative values from a predetermined value, or using other corresponding information. may be expressed.

As used in this disclosure, the phrase "based on" does not mean "based solely on" unless explicitly stated otherwise. In other words, the phrase "based on" means both "based only on" and "based at least on."

As used in this disclosure, any reference to elements using the designations "first," "second," etc. does not generally limit the amount or order of those elements. These designations may be used in this disclosure as a convenient way to distinguish between two or more elements. Thus, reference to a first and second element does not imply that only two elements may be employed or that the first element must precede the second element in any way.

The "unit" in the configuration of each device described above may be replaced with "means", "circuit", "device", etc.

Where "include", "including" and variations thereof are used in this disclosure, these terms, like the term "comprising," are inclusive. It is intended that Furthermore, the term "or" as used in this disclosure is not intended to be exclusive or.

In this disclosure, when articles are added by translation, such as a, an, and the in English, the present disclosure may include that the nouns following these articles are plural.

In the present disclosure, the term "A and B are different" may mean "A and B are different from each other." Note that the term may also mean that "A and B are each different from C". Terms such as "separate" and "coupled" may also be interpreted similarly to "different."

1: Information processing system, 2: Network, 10a, 10b: Information holding device, 11a, 11b: Storage unit, 11a, 11b: Generation unit, 13a, 13b: Transmission unit, 14a, 14b: Acquisition unit, 15a, 15b: Connection unit, 16a, 16b: Analysis unit, 17a, 17b: Deletion unit, 20: Management device, 21: Issue unit, 22: Providing unit, 23: Deletion unit, 1001: Processor, 1002: Memory, 1003: Storage, 1004 : communication device, 1005: input device, 1006: output device, 4001: processor, 4002: memory, 4003: storage, 4004: communication device, 2005: input device, 2006: output device.

Claims (1)

Random data common to other information processing devices is added to an information identifier that identifies each piece of information included in the first information group, and then the converted first information group is generated through a process of converting using an irreversible conversion algorithm. A generation section,
The converted data is generated by adding the common random data to an information identifier that identifies each piece of information included in the second information group in the other information processing device, and then converting it by the irreversible conversion algorithm. an acquisition unit that acquires two information groups;
a combining unit that combines the generated first information group after conversion and the acquired second information group after conversion based on the information identifier after conversion ;
a storage unit that stores fragmented data obtained by fragmenting the random data added to the information identifier in the conversion in cooperation with the other information processing device;
An information processing device comprising:

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