JP3085117U - Security system for contents recorded on mobile phones - Google Patents

Abstract

(57) [Summary] [Problem] The amount and quality of information to be handled is diversified and important confidential data is transmitted and received.
Development and operation of a system (X mode) for forcibly erasing recorded contents of mobile phones. SOLUTION: If one person deletes recorded contents of a mobile phone by himself, there is a possibility that mistakes or intentional damages may occur. Therefore, the mobile phone maker equips the mobile phone with the X-mode, specifies the X-mode by the maker, creates a forced erasure signal X-code using the erasure code of the user himself and the X-mode key from the maker, Establish an association (Japan Telecommunications Security Assurance Association, tentative name) to transmit the X code by confirming the identity of the user based on the user information. It will be possible to forcibly erase the contents of the record only when several organizations, mainly the association, intervene, and eliminate factors that lead to errors and crimes. The association operates at a monthly fee and determines the fee according to the guarantee of the damage.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the present invention pertains] In the present invention, the number of users has increased more and more in recent years, the amount and quality of information handled has been diversified, and mobile phone accidents in which transmission and reception of important confidential data are not small, such as trafficking, theft, and traffic accidents. The present invention relates to the development and operation of a system for quickly and accurately forcibly erasing the recorded contents of a mobile phone when the user recognizes the loss, in case the mobile phone itself is lost due to tampering or the like.

[0002]

[Prior art]

 A system that prevents a third party (calling a person who acquired a mobile phone regardless of good or bad intentions) from using a conventional mobile phone, such as by locking a phone number key or locking the phonebook, is difficult to use. It exists, but it is often relatively easy to unlock it with current PINs that are no more than four digits.

[0003] There are no other protective measures for information leakage except at the individual level. In the event of loss, measures should be taken not to record important information or to delete the history each time. As a matter of fact, it can be said that such a method has become impractical as the amount of information increases today.

[Problems to be solved by the invention]

(Personal identification) When a person who has lost a mobile phone informs the telephone company that he / she has lost it and offers to delete the contents of the record, the telephone company uses a method to confirm the identity of the user as a means of confirming his identity. It is customary to confirm the security code of a mobile phone. However, there is an unspecified number of people who can see the documents described by sales agents, etc. besides the person, and this information is sufficient to forcibly erase important records on the mobile phone. Confirmation is insufficient, and more accurate confirmation requires time and labor.

(Accurate signal) Even if the mobile phone company issues an erasure signal even after confirming the identity, if the erasure signal is incorrectly recognized, the other party's telephone is incorrectly identified when the erasure signal is transmitted, or the telephone company's person in charge misleads. There is a risk of erasing the records of telephones that are not intended due to erasure, etc., and services that cover the entire erasure process, including the transmission of the erasure signal, clearly exceed the area that can be handled by one organization. Show.

(Signal Leakage) Further, when one of the telephone companies issues an erasure signal, even if the erasure signal is encrypted, the encryption may be decrypted and confidential information may be leaked. Also, even if the telephone company has no way to decrypt the code and only the mobile phone that received the erasure signal can decrypt it, if the encryption method is leaked, the act will be a third party. Even if it does not bring any benefit to the user, there is a possibility that important records of unspecified mobile phones, such as pleasure criminals, may be deleted.

[0007] (Operation of Association) [0007] Even if the Telecommunications Security Assurance Association (tentative name) is established separately from the telephone company as an organization that can identify the person and issue a signal to erase the recorded contents of the telephone, If the signal from here is the same as the erasure signal method of the above-mentioned telephone company, the possibility of human error or intentional decryption remains.

[Means for Solving the Problems]

[0008]

From

As a means for solving the above-mentioned problems, the Japan Telecommunications Security Assurance Association (tentative name, hereinafter referred to as "the Association") will function.

[0009] The Association confirms the identity of the user who has lost the mobile phone and wants to erase the recorded contents, and issues an X code to the mobile phone in the READY state in the X mode. Performs the task of erasing recorded content.

The role of the association and a specific procedure for controlling the transmission of a recording / erasing signal will be described in detail with reference to FIG.

[0011] As terms necessary for concrete description of the present invention, the following two, that is, a code for erasing the recorded content of a mobile phone is called "X-code", and when the X-code is received, The mode of the mobile phone which decodes the data and executes the erasing operation is called "X mode" and is defined here.

First, a mobile phone maker manufactures a mobile phone equipped with an X mode in advance, and a telephone company sells a mobile phone having the X mode function.

[0013] Mobile phone users recognize the importance of the contents used on mobile phones, and in the event that they are lost, the contents can be seen by a third party, or the property may be stolen using the recorded contents. Purchase a mobile phone equipped with X-mode for the purpose of preventing it from happening. ・ It is assumed that you own and input the X-mode password X0 into the mobile phone itself (Fig. 1). State).

When a mobile phone user equipped with the X mode (hereinafter referred to as “user”) loses a mobile phone and wants to erase the recorded contents of the mobile phone, the user is notified to the telephone company. Offer it through a public line or NTT contract line (signal in FIG. 1).

At this time, the telephone company confirms that the name and the mobile phone number are the identity using the password notified by the user at the time of the use contract (signal in FIG. 1).

[0016] This is the same as the authentication method used when changing the contract status of the mobile phone owned by the user, and at this time, the X-mode password X0 entered by the user into the mobile phone is also used by the telephone company. Tell

The telephone company encrypts each of the user's name, contact telephone number, mobile phone number, an ID code unique to the mobile phone obtained from the user's mobile phone number, and data X0 of the X-mode password. And transmit it to the Association via the Internet. (Signal in Fig. 1)

The Association encrypts the ID code of the user's mobile phone to the telephone manufacturer and transmits it over the Internet, and requests the ID code to set the X mode to the READY state (signal in FIG. 1). ).

The mobile phone maker decodes the X-mode request from the association and issues a signal for setting the X-mode of the mobile phone of the corresponding ID code to the READY state (signal in FIG. 1). The X-mode of the mobile phone lost by the user is in the READY state, and the system is ready to receive the X-code.

The mobile phone maker encrypts the key code X1 that allows the X mode of the mobile phone to decode the X code, and notifies the association via the Internet (signal in FIG. 1).

The association combines the X1 code from the mobile phone manufacturer with the X0 code determined by the user to generate an X code. At the same time, the person in charge of the Association calls the contact telephone number, confirms whether the user has requested to erase the record of the mobile phone, and makes a final check (signal in Fig. 1).

If the confirmation can be made in FIG. 1, the association transmits an X code to the mobile phone from which the user has requested the deletion of the record (signal in FIG. 1), whereby the recording of the mobile phone is completed. Will be erased.

The X code shown in FIG. 1 is added after the corresponding mobile phone number, and the mobile phone receiving this code specifies the main body with a normal 11-digit mobile number, and then adds the code. Of the X codes, the X mode key is opened with the X1 code, and the erasure is performed by receiving the erasure code X0 defined by the user.

When the erasure is completed, the mobile phone sends an erasure completion signal to the association (signal {10} in FIG. 1), and upon receipt of this signal, the association completely erases the record as requested by the user. Recognize that it was done.

After confirming that the signal of (10) in FIG. 1 has been caught, the person in charge of the association notifies the user that the erasure has been confirmed to the contact person in the specified manner (see FIG. 1). 1 signal (11)).

[0026] Upon receiving this communication, the user will feel reassured that measures have been taken to protect privacy and property.

[Effect of the invention]

[0027] The present invention is intended to protect users who have lost a mobile phone on which important information is recorded from the vulnerabilities of modern mobile phone civilization in order to protect them from material and mental damage caused by the leakage of the information. It provides an indispensable system for supplementing essential parts.

Although there may be a number of techniques for erasing the recorded contents, it is not possible for a single telephone company that has received a user's request to erase the contents alone by mistake or intentionally. There is a possibility that the contents will be erased, and the resulting problems will be extremely large. According to the present invention, this damage can be significantly reduced.

In the present invention, the mobile phone itself requires a personal identification code X0 for erasure set by the user independently, but there is no way for the mobile phone maker to know this code X0.

The telephone company knows the user's personal identification code X0, but does not know the key code X1 by which the telephone can recognize the erasure code, and the Association also provides the mobile phone manufacturer with information from the telephone company. It is necessary to receive a key from the manufacturer to promote the readiness of the X mode and to turn it on. In any case, recording and erasing cannot be performed independently, and multiple organizations and people must intervene. For example, it has a structure that does not generate an erase signal.

That is, it is possible to effectively cope with a crime that accidentally deletes a record of a different mobile phone or intentionally deletes a record.

If the spread of mobile phones equipped with the X mode is promoted, the number of damages caused by the loss of the mobile phone can be expected to decrease significantly, which can contribute to the maintenance of social order.

[0033] Further, the Association assumes that the loss of the mobile phone will cause financial damage, and from the time the request for erasing the record of the mobile phone to the time the record is erased. There are a number of ways to guarantee damages for the crimes that have occurred or to determine a monthly fee with a predetermined amount of guarantee, which will help to discover new businesses in the form of guarantees and promote employment. Connect.

In an era where mobile phones perform various functions, security is recognized as an absolutely necessary condition, but these functions are in conflict with the rapidly developing productive table functions of mobile phones. There is a need for X-mode as an indispensable back-up function that compensates for the vulnerabilities of the society that arise as a result of the dependence on the X-mode, and the association that operates this X-mode has social significance.

[Submission date] October 27, 2001 (2001.10.27)

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] Detailed explanation of the device

[Correction method] Change

[Correction contents] [Detailed description of the invention]

[0001]

[Technical field to which the present invention pertains] In the present invention, the number of users has increased in recent years, the amount and quality of information handled has diversified, and the transmission and reception of important confidential data is not small. In case the mobile terminal itself is lost due to storage, theft, knocking, etc., when the user recognizes the loss, the recorded contents of the mobile phone are promptly and accurately erased for security and privacy protection. The invention of a system for performing the above.

[0002]

[Prior art]

 With conventional mobile phones (terminals), a third party (called the person who acquired the mobile terminal regardless of good or bad intentions) could not easily read it by using a method such as locking the phone number key or locking the phonebook. Although a system exists, it was often easily unlocked with current PINs using no more than four digits.

At this time, there is no other way to protect information leaks except at the individual level. Assuming that the information has been lost, do not record important information or keep a history every time. There is no choice but to take measures to eliminate them, and as a practical matter, with the increase in the amount of information today, such methods are becoming impractical.

[Problems to be solved by the invention]

When a person who has lost a portable terminal wants to delete the contents of the record, a strict check is required to accurately identify the portable terminal of the lost person and to completely erase the record. Executing the erase code through the system and high accuracy that does not malfunction are required.

[0005] Even after the mobile phone company confirms the identity of the user, there is a concern that the erasure signal may be issued. There is a risk of erasing the contents of the telephones outside of the target due to malicious erasure, and measures must be taken to prevent malfunction during the entire erasure process, including the transmission of the erasure signal.

Further, when the mobile terminal is outside the communication area (out of the service area), a situation occurs in which the mobile terminal cannot receive the erase signal even if the erase signal is transmitted.

[0007] Furthermore, leakage of the stored contents may occur due to the act of reading the stored contents after disassembling the portable terminal and directly removing the memory IC from the substrate, or downloading the stored data by the data extracting device. There is.

[0008] Some portable terminals, such as SIMs, are of a type that inserts or removes a memory card that stores a number code for identifying an individual or some personal information, such as a SIM. Even if an erasure signal is sent to the terminal using, it is not possible to erase information such as a SIM that is not attached.

[Means for Solving the Problems]

In order to prevent leakage of personal information stored in a mobile terminal represented by a mobile phone, and to enable the stored contents to be remotely erased by radio waves as necessary, Is provided with a circuit (X mode) for erasing.

The basic functions of the X mode are shown in FIG. 1. When a memory card such as a SIM or the like is used as a device for erasing the stored contents, the card is provided on the card. A storage device for realizing the X-mode and a device (6 to 14 in FIG. 1) having a power supply battery unit for enabling operation even when the power is turned off are built in in advance.

FIG. 1 is a block diagram showing a flow of a process in which only the previously-installed X-mode function portion is extracted from each portion in the mobile terminal.

An antenna 1 receives a radio wave, separates incoming data transmitted from a modulator / demodulator 3 of a portable terminal by 6, and determines whether or not the signal has an X code B instructing an erasure request. It is determined whether or not.

If the incoming data is simply a call stop signal, a control method of restricting only the call function while protecting the stored data (dotted arrow from 6 to 10) is already in practical use. If there is an X code B, the X code B is analyzed at 8 to check whether the X code A is included.

The X code A is a code initially recorded 7 by the manufacturer so as not to be lost in each machine at the time of manufacturing the storage device of the portable terminal, and is assigned as a unique code to all portable terminals. It is managed privately.

If the X-code B does not include the X-code A, the storage data is determined to be protected at 9, but if the X-code A is included, the stored data is subject to forced erasure.

Although the mobile terminal is conventionally provided with a mechanism 12 for judging whether it is within the communication area (within the service area) or outside the communication area (out of the service area), the information is always erased to prompt the execution of the X code C. A control signal is sent to the judgment 9 of.

Assuming that the portable terminal itself is disassembled 14 and the IC in which the personal information on the built-in IC board is stored is removed from the board, as shown in the sectional view of FIG. When the switch is closed, a switch 2 is provided that can detect the opening and closing by contact between the lid and the main body 4 at a middle position.

When the cover is closed, the contact switch 3 is turned on. When the cover is opened, the switch 2 is separated and turned off, and when the switch 3 is simultaneously opened and turned off, the contact switch 3 is disassembled for the first time. When one switch is momentarily opened due to an impact or the like, measures are taken to reduce the possibility that the switch will be mistakenly disassembled.

Further, even if a hole or the like is drilled from the back surface of the portable terminal using a device such as a drill and the internal storage device is taken out by physical breakage, as shown in FIG. If this conductor is cut off from the back surface 2 with a drill or the like, such as by laying a spiral conductor 1 maintained at a constant potential under the IC substrate 3 on which it is mounted, the potential of the conductor will drop. Built-in electric switch to detect open.

1 in FIG. 1 also detects the operation of extracting the contents of the memory. If such a physical abnormality of the terminal device is detected, the operation status is determined 11 and whether to perform complete erasure or data protection is determined. The determination 9 is performed based on the information 12 indicating whether the area is outside the service area or inside the service area.

The place where a removable storage device such as a SIM is inserted / attached does not depend on the communication area. However, if the SIM is pulled out / removed from a place outside the service area, the switch A shown in FIG. , B, and C detect this (signal flow from 13 to 14 in FIG. 1).

When this information is sent to 9 in FIG. 1 and combined with the area detection signal from 12 to detect an attempt to remove the SIM outside the service area, the SIM itself is completely erased. A signal is issued to 13 and an erase control signal is sent to the D terminal of 2 in FIG.

With the above-described method, the storage of the mobile terminal in all fields, such as remote erasure in the service area, information protection outside the service area, erasure in the face of physical disassembly and destruction when the SIM is removed outside the service area, etc. An apparatus for completely erasing the contents is configured.

[Effect of the invention]

[0024] The present invention is intended to protect a user who has lost a portable terminal on which important information has been recorded from being lost in the modern portable terminal civilization in order to protect the user from material and mental damage caused by the leakage of the information. It provides an indispensable system for supplementing essential parts.

[0028] There will be many techniques for deleting the recorded contents. However, if one telephone company alone receives a request from a user to delete the contents alone, the contents may be unduly mistaken or intentionally deleted. There is a possibility that damage will be caused to be erased, and the resulting problem becomes extremely large. However, according to the present invention, this damage can be significantly reduced.

According to the present invention, a combination of X, codes A, B, and C can effectively cope with a crime that accidentally erases a record of a different portable terminal or intentionally erases the record. .

If the spread of mobile terminals equipped with the X mode is promoted, the number of damages caused by the loss of mobile terminals can be expected to decrease significantly, which can contribute to the maintenance of social order.

In an era where mobile terminals perform various functions, security is recognized as an absolutely necessary condition, but these functions are in conflict with the rapidly developing productive table functions of mobile terminals. As an indispensable back-up function to compensate for the vulnerabilities of the society that arises as a consequence of the dependence on the X-mode, there is a need for the X-mode, and the organization that operates this X-mode has social significance.

[Brief description of the drawings]

FIG. 1 Procedure for transmitting a record erasure code of a mobile phone

[Description of code] X-mode function equipment Erasure request notification Identity verification Erasure request encryption X-mode request encryption X-mode READY status signal X-mode key code notification encryption E-erasure request identification X-code transmission ▲ 10 ▼ Erase completion signal transmission ▲ 11 ▼ Erase completion notification

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] October 27, 2001 (2001.10.
27)

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] Claims for utility model registration

[Correction method] Change

[Correction contents]

[Utility model registration claims]

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] Brief description of drawings

[Correction method] Change

[Correction contents]

[Brief description of the drawings]

FIG. 1 is a procedure for transmitting a record erasure code of a mobile terminal.

[Description of Code] 1 Antenna 2 Radio part 3 Modulator / Demodulator 4 Speech codec 5 Microphone / Speaker 6 Incoming data separation circuit 7 X / Code A 8 X / B Analysis circuit 9 Circuit for determining whether or not to perform complete erasure 10 Complete erasure execution circuit 11 Decoder for determining operation status of SIM or the like 12 Communication area detection circuit 13 SIM operation detection and SIM data erasure circuit

FIG. 2 is a cover open detection switch of a portable terminal.

[Description of Signs] 1 Lid of mobile terminal 2 Lid open detection switch 1 3 Lid open detection switch 2 4 Mobile terminal body container

FIG. 3 is a destruction detection switch of a portable terminal.

[Description of Signs] 1 Lead wire switch 2 Portable terminal body container 3 IC board 4 IC for holding stored data

FIG. 4 is a destruction detection switch of a portable terminal.

[Description of Signs] 1 Extraction of SIM withdrawal detection signal 2 Transmission of control signal for erasing SIM storage contents

[Procedure amendment 7]

[Document name to be amended] Drawing

[Correction target item name] Fig. 1

[Correction method] Change

[Correction contents]

FIG.

[Procedure amendment 8]

[Document name to be amended] Drawing

[Correction target item name] Figure 2

[Correction method] Added

[Correction contents]

FIG. 2

[Procedure amendment 9]

[Document name to be amended] Drawing

[Correction target item name] Figure 3

[Correction method] Added

[Correction contents]

FIG. 3

[Procedure amendment 10]

[Document name to be amended] Drawing

[Correction target item name] Fig. 4

[Correction method] Added

[Correction contents]

FIG. 4

Claims (4)

[Utility model registration claims] Claims 1. When a mobile phone is lost due to misplaced or stolen mobile phone, important contents recorded on the mobile phone are forcibly erased, and privacy and property protection are enabled. Safety system as one. 2. When mobile phones become more widespread and information that is directly related to the interests of individuals and organizations is handled,
In order to avoid the danger that the interests of individual individuals or groups are threatened in the event of an accident, a mobile phone manufacturer operates an individual mobile phone in order to operate the security system as a mobile phone service described in claim 1. Must be equipped with a forced recording erase circuit (X mode) as a basic function. 3. An organization (tentative name, Japan Telecommunications Security Assurance Association) that operates the X mode described in claim 2 is established, and the organization checks the authentication of the mobile phone user who has requested the record erasure, In cooperation with mobile phone companies and mobile phone manufacturers, it transmits encrypted erasure instruction codes and plays the role of accurately erasing records of the corresponding mobile phone. 4. The telephone company accepts the membership of the Telecommunications Security Assurance Association (tentative name) at the time of the telephone contract, as requested by the customer.
The security guarantee fee is added to the monthly communication fee and collected, and this is the revenue of the Communication Security Assurance Association. A security business plan in an advanced mobile terminal society with multi-level security measures implemented by a telephone company, a telephone manufacturer, and the Communication Security Assurance Association.