JP4388922B2 - Portable storage devices - Google Patents

Description

  The present invention relates to a type of portable storage device. In particular, the present invention relates to a portable storage device having a kind of memory and capable of performing a confidentiality keeping operation on a block divided by the memory without installing a driving program in a host computer.

Since flash memory has excellent characteristics such as energy saving, non-volatility, earthquake resistance, and high storage density, it is replacing EEPROM or battery-powered memory in many portable devices. More recently, with the advancement of semiconductor technology, the storage density and transmission speed of flash memory has grown surprisingly, and flash memory is trying to replace its role with traditional storage media such as hard disk devices in various application products. Yes.
Since flash memory has the above functions and characteristics, development of flash memory storage devices using flash memory is active in the industry. This type of flash memory storage device is extremely convenient compared to most traditional storage devices (such as hard disks) because it can provide consumers with quick data storage, reading and easy portability For this reason, flash memory storage devices have gained widespread consumer support since their launch and are now indispensable.

  In response to this, a portable storage device that combines USB with an ultra-large capacity, high transmission speed, and compactness has been developed. In other words, it is a portable hard disk that is combined with a hard disk of a notebook PC or desktop PC and configured by a transmission interface. Mass use of the portable hard disk reverts to the basic aspect of computer architecture, and it is long and strongest in terms of hard disk capacity and transmission speed It was a storage facility. Moreover, after the portable hard disk is formed by combining with the transmission interface, the usage capacity of the portable storage equipment is expanded from the capacity not reaching 10 GB of the portable disk or the memory card to the capacity of several tens of GB of the portable hard disk. It is possible to store multimedia images or OS system software that reach several hours from simple document files and music files.

However, since the flash memory or the hard disk storage device has a small volume, it is easily stolen or lost. To cope with this, vendors have adopted a method of protecting data stored in flash memory storage devices with passwords or fingerprint data, thereby eliminating the possibility of data being read if the user's storage device is lost. can do.
These memory storage devices having a security function that are currently on the market need to be installed in a host computer to which the memory storage device is to be connected. In this way, the user can carry the memory storage device, but must also carry an optical disc with a separate drive program, otherwise it cannot be used on any host computer.
Furthermore, since the memory storage device (for example, Patent Document 1) having the above-described security function can only perform encryption / decryption operations on a specific item or file, the user tries to protect it. Data to be included in this item.
In other words, since it is not possible to maintain confidentiality for the entire disk block, the user is subject to many restrictions during use, and it is very inconvenient because it is not possible to arbitrarily manage data that should be kept confidential. there were.
JP 2004-199318 A

The known structure has the following drawbacks.
In other words, a flash memory or hard disk storage device is small in volume and is easily stolen and lost. However, from the viewpoint of security, a method for protecting internal data with a password or fingerprint data is provided by a memory storage device. It must be installed on the host computer to be connected. This makes it possible for the user to carry the memory storage device, but it is also very troublesome to carry an optical disc with a drive program separately.
Furthermore, since the memory storage device having the confidentiality function can only perform encryption / decryption operations on a specific item or file, the user needs to incorporate data to be protected in this item. In addition, data that should be kept confidential cannot be managed arbitrarily, which is very inconvenient.
The present invention provides a portable storage device that solves the problems of the above structure.

In order to solve the above problems, the present invention provides the following portable storage device.
It mainly uses an authentication program stored in the first application program block divided by the memory, compares and contrasts whether the user ID is the same as the user ID in the hidden block, and stores it in the confidential data block Data can be prevented from being stolen by a user who does not pass the authorization of the authentication program, and the user can store confidential data in the same block without any restrictions. There is no need to install a driving program in the user, so that the convenience of use for the user is improved, that is, the storage device of the present invention is provided with a connection interface, which in turn connects the microcontroller and the memory, and the memory Hidden block, first application program And the first application program block stores an authentication program, and when the user electrically connects to the host computer using the connection interface, The storage device sets the first application program block and the unclassified data block as used blocks, sets the classified data block as a use stop block, and a user accesses data to the unclassified data block. When the user accesses the confidential data block, the authentication program stored in the first application program block is executed first, and when the authentication program is executed, the authentication program is executed. Requests the user to input the user ID, and if the authentication program compares and matches the ID entered by the user with the user ID stored in the hidden block, the confidential data block is set as a use block, and the confidential data The portable storage device is characterized in that data stored in a block is prevented from being stolen by a user who does not pass authorization of a password authentication program.

That is, the invention of claim 1, storage devices is established the host computer and connecting interface electrically connected to pre-installed, and該連contact interface the enforceable microcontroller commands to said host computer transmits Concatenating, the microcontroller concatenating memory, and the memory is divided into a hidden block, a first application program block, an unclassified data block, a classified data block, the hidden block storing a user password; The first application program block stores a password authentication program, and when the host computer executes the password authentication program, the password authentication program requires the user to enter a password. And the password authentication program compares and contrasts the password entered by the user with the user password stored by the hidden block, and the unclassified data block is one or more, and the unclassified data block is stored in the connection interface. When connecting to the host computer, it provides the data in the access block directly to the host computer, the confidential data block is one or more, and the confidential data block is hidden from the password entered by the user in the password authentication program. after comparing authenticate the user password sign that the block store, subjecting Hisage the data in the host computer access block, the memory is intended to be further divided into the second application program block The password authentication program compares and compares the password entered by the user and the user password stored in the hidden block, automatically disconnects the connection between the storage device and the host computer, and disconnects the connection and then connects to the host computer again. and, a feature and a notification child to confidentiality data block and the second application program block and using block with respect to the host computer, and decommissioning block yet-confidentiality data blocks and the first application program block Is a portable storage device.

According to a second aspect of the present invention, the first application program block further stores an automatic execution program, whereby the storage device automatically executes a password authentication program when connected to a host computer installed in advance. The portable storage device according to claim 1 .
The invention of claim 3, wherein the second application program block is a portable storage device according to claim 1, wherein the storing the switching program or other application program.
According to a fourth aspect of the present invention, the switching program disconnects the connection between the storage device and the host computer at the time of execution by the user, connects again to the host computer after disconnecting the connection, and maintains the non-confidentiality with respect to the host computer. 4. The portable storage device according to claim 3 , wherein the data block and the first application program block are used blocks, and the confidential data block and the second applied block are notified to be used blocks. .

The invention of claim 5, storage devices is established the host computer electrically connected interface which connects to previously installed and該連contact interface by concatenating enforceable microcontroller commands to the host computer transmits, Each of the microcontrollers concatenates a fingerprint scanner and memory, and the memory is divided into a hidden block, a first application program block, an unclassified data block, and a confidential data block, the hidden block storing a user's fingerprint characteristics. The first application program block stores a fingerprint authentication scanning program and a fingerprint recognition program, and when the host computer executes the fingerprint authentication program, the fingerprint authentication program passes the fingerprint scanner to the user. The fingerprint authentication program requests the user to enter a fingerprint, and the fingerprint authentication program compares and contrasts the fingerprint entered by the user with the user's fingerprint characteristics stored by the hidden block, and the unclassified data block is one or more and the unidentified data block. The confidential data block is connected to the host computer at the connection interface, and provides direct access to the data in the block to the host computer. The confidential data block is one or more, and the confidential data block is fingerprint-authenticated. after comparing the authentication fingerprint characteristic of a user signs of storing the fingerprint and the hidden block a user enters the program subjected Hisage access to block data to the host computer, wherein the memory is further divided into the second application program block, Fingerprint recognition The program compares and compares the fingerprint entered by the user and the fingerprint characteristics of the user stored in the hidden block, automatically disconnects the connection between the storage device and the host computer, and disconnects the connection and then connects to the host computer again. And notifying the host computer that the confidential data block and the second application program block are used blocks, and the non-confidential data block and the first application program block are used blocks. It is a portable storage device.

The invention of claim 6 is characterized in that the first application program block further stores an automatic execution program, and automatically executes a fingerprint authentication program when the storage device is connected to a host computer installed in advance. Item 6. The portable storage device according to Item 5 .
A seventh aspect of the present invention is the portable storage device according to the fifth aspect, wherein the second application program block stores a switching program or other application programs.
According to an eighth aspect of the present invention, the switching program disconnects the connection between the storage device and the host computer at the time of execution by the user, disconnects from the connection, and then connects to the host computer again. 8. The portable storage device according to claim 7 , wherein the first application program block is used as a use block, and the confidential data block and the second application program block are notified as use stop blocks.
The invention of claim 9, wherein the first application program block is a portable storage device according to claim 1 walk 5 wherein the a block of ISO9660 format or DOS format.
The invention of claim 10, wherein the connecting interface, USB connecting interface IEEE1394, Serial ATA articulating interface, or claim 1 walk, which is a memory card connecting interface is a portable storage device 5 according.
The invention of claim 11, wherein said memory according to claim 1 walk, which is a flash memory or a hard disk is a portable storage device 5 according.
The invention of claim 12, wherein the storage device according to claim 1 walk, wherein the portable disk, a memory card, a micro device (Micro Drive) or a hard disk type storage device is a portable storage device 5 according.

As described above, the present invention uses a password authentication program or a fingerprint authentication program stored in the first application program block divided by the memory, and determines whether the user ID is the same as the user ID in the hidden block. In comparison, data stored in the confidential data block can be prevented from being stolen by a user who does not pass the authorization of the authentication program.
In addition, it is not necessary to install a drive program in the host computer at the time of use, and the inconvenience of a known structure that must be stored in the host computer connected to the drive program can be improved.
In addition, the present invention uses a password authentication program or fingerprint authentication program stored in the first application program block divided by the memory to control the opening of the non-confidential data block and the confidential data block. Data that needs to be kept confidential without being received can be stored in the same block.
In this way, it is impossible to maintain confidentiality for the entire disk block in a known structure in which encryption / decryption operations can be performed only on a specific item or file in the past. This has the effect of eliminating the inconvenience of use that data that should be kept confidential and cannot be arbitrarily managed.

As shown in FIG. 1, the portable storage device 1 according to the preferred embodiment of the present invention includes a connection interface 11, a microcontroller 12, and a memory 13. The memory 13 includes a hidden block 131 and a first application program block 132. The non-confidential data block 133, the second application program block 134, and the confidential data block 135 are divided.
The connection interface 11 is electrically connected to the host computer 2, and the connection interface 11 includes an interface such as a USB connection interface, a memory card connection interface, IEEE 1394, and a Serial ATA connection interface.
The memory card connection interface 11 is configured in the form of a memory card such as an MS memory card connection interface, an XD memory card connection interface, or an SD memory card connection interface.
The microcontroller 12 is connected to the connection interface 11, and the microcontroller 12 receives and executes a command transmitted by the host computer 2 through the connection interface 11.
The memory 13 is connected to the microcontroller 12, and the memory 13 is constituted by a NOR, NAND, AND type flash memory or a hard disk.
The hidden block 131 stores a user password, and the hidden block 131 is a DOS format block.
The first application program block 132 stores a password authentication program, and the first application program block 132 is an ISO9660 format block.
The unclassified data block 133 provides access data to the host computer, and the unclassified data block 133 is a DOS format block.
The second application program block 134 stores a switching program or other application programs, and the second application program block 134 is an ISO9660 format block.
The security data block 135 provides access data to the host computer, and the security data block 135 is a DOS format block.

The above-described storage device 1 is composed of a portable disk, a memory card, a micro device, or a hard disk storage device.
When the user electrically connects the connection interface 11 installed in the storage device 1 and the host computer 2, the storage device 1 connects the first application program block 132 and the unclassified data to the host computer 2. The block 133 is a use block, and the second application program block 134 and the confidential data block 135 are notified to be a use stop block.
Thus, the user performs data access to the non-confidential data block 133 through the host computer 2, and the second application program block 134 and the confidential data block 135 become a deactivation block. Data access to the data block 135 cannot be performed.
When a user tries to perform data access to the confidential data block 135, the password authentication program stored in the first application program block 132 is executed first, and when the password authentication program is executed, The password authentication program user is requested to input a password from the host computer 2.
The password authentication program compares and compares the password entered by the user with the user password stored in the hidden block 131, and then automatically disconnects the electrical connection (connection) between the storage device 1 and the host computer 2. To do. After disconnecting the connection, the storage device 1 automatically connects again to the host computer 2, and the confidential data block 135 and the second application program block 134 are used blocks for the host computer 2, The unclassified data block 133 and the first application program block 132 are notified to be a use stop block.
In this way, the user can perform data access to the confidential data block 135.

On the other hand, if the password authentication program compares and does not match the password entered by the user and the user password stored by the hidden block 131, the password authentication program does not operate at all, and the user does not respond to the unclassified data block 133. Can only access data.
When the user wants to replace the confidential data block 135 and the second application program block 134 in use by the storage device 1 with the non-confidential data block 133 and the first application program block 132, first, the first The switching program stored in the second application program block 134 is executed. The switching program disconnects the storage device 1 and the host computer 2 and automatically disconnects the storage device 1 and the host computer 2 again after disconnection. Connect them. Further, the host computer 2 is notified that the unclassified data block 133 and the first application program block 132 are used blocks, and the classified data block 135 and the second application program block 134 are used blocks. In this way, the user can perform data access to the unclassified data block 133.

As described above, the storage device 1 uses the password authentication program and the switching program stored in the first application program block 132 and the second application program block 134 without the need to install a drive program in the host computer 2. The data access to the non-confidential data block 133 and the confidential data block 135 is performed, and the user performs data access to the confidential data block 135 before obtaining the authentication of the password authentication program. Since it cannot be performed, it is possible to reliably prevent the data stored in the confidential data block 135 from being stolen by a user who does not pass the authorization of the password authentication program.
Further, the first application program block 132 can store an auto-execution program (autorun.inf), and the auto-execution program (autorun.inf) instructs opening of a password authentication program, thereby When the host computer 2 is connected, the host computer 2 automatically executes a password authentication program stored in the storage device 1.

Further, as shown in FIGS. 1 and 2, the storage device 1 of the present invention proceeds based on the following steps during use.
Step (100), start step (101), step (102) of connecting the connection interface 11 installed in the storage device 1 to the host computer 2, and the storage device 1 is connected to the first application program block 132 of the memory 13. The non-confidential data block 133 is set as a use block, and the second application program block 134 and the confidential data block 135 are set as a use stop block (103), stored in the first application program block 132 Executing the password authentication program to be executed Step (104), the user inputs the password step (105), the password authentication program is the password input by the user and the hidden block 31 compares and compares the user passwords stored, and if they match, the process proceeds to step 106, and if they do not match, the process proceeds to step 102 (106), the storage device 1 automatically disconnects the connection (consolidation) with the host computer 2 And after disconnecting the connection, the storage device 1 automatically reconnects to the host computer 2 and sets the confidential data block 135 and the second application program block 134 of the memory 13 as used blocks, A step (107) for setting the unclassified data block 133 and the first application program block 132 as a use stop block, a step (108) for executing a switching program stored in the second application program block 134, a storage device The storage device 1 automatically disconnects the connection with the host computer 2, and after disconnecting the connection, the storage device 1 automatically connects again with the host computer 2, and the unclassified data block 133 of the memory 13 The first application program block 132 is set as a use block, and the confidential data block 135 and the second application program block 134 are set as use stop blocks. Step (109), End

Subsequently, as shown in FIG. 3, the portable storage device 1 according to another optimal embodiment of the present invention is provided with a connection interface 11, and the connection interface 11 connects a microcontroller 12. The microcontroller 12 connects the fingerprint scanner 14 and the memory 13, respectively, and the memory is a hidden block 131, a first application program block 132, an unclassified data block 133, a second application program block 134, and a classified data block 135. It is divided and configured.
The hidden block 131 stores the user's fingerprint characteristics, and the hidden block 131 is a DOS format block.
The first application program block 132 stores a fingerprint authentication program and a fingerprint scanning program, and the first application program block 132 is an ISO9660 format block.
The unclassified data block 133 provides access data to the host computer, and the unclassified data block 133 is a DOS format block.
The second application program block 134 stores a switching program or other application programs, and the second application program block 134 is an ISO9660 format block.
The security data block 135 provides access data to the host computer, and the security data block 135 is a DOS format block.

When the user electrically connects to the host computer 2 using the connection interface 11 installed in the storage device 1, the storage device 1 transmits the first application program block 132 and the unconnected application program to the host computer 2. The confidential data block 133 is used as a used block, and the second application program block 134 and the confidential data block 135 are notified to be used blocks. Thus, the user performs data access to the unclassified data block 133 through the host computer 2.
Since the second application program block 134 and the confidential data block 135 are inactive blocks, the user cannot perform data access to the confidential data block 135.
When a user tries to access data to the confidential data block 135, first, a fingerprint authentication program stored in the first application program block 132 is executed. Further, when executing the fingerprint authentication program, the password authentication program requests the user to input a fingerprint from the fingerprint scanner 14. The fingerprint scanner 14 is driven by a fingerprint scanning program stored in the first application program block 132. After the user's fingerprint is input, the fingerprint authentication program reads the fingerprint input by the user and the user's fingerprint stored in the hidden block 131. After comparing and comparing the characteristics of the storage device 1, the electrical connection between the storage device 1 and the host computer 2 is automatically disconnected. And after disconnecting the connection, the storage device 1 automatically reconnects with the host computer 2, and the confidential data block 135 and the second application program block 134 are used blocks for the host computer 2, The unclassified data block 133 and the first application program block 132 are notified to be a use stop block. In this way, the user can perform data access to the confidential data block 135.
Conversely, when it does not match by the comparison control, it does not operate at all, and the user can only perform data access to the unclassified data block 133.

When a user tries to exchange the confidential data block 135 and the second application program block 134 in use by the storage device 1 with the unclassified data block 133 and the first application program block 132, the first The switching program stored in the second application program block 134 is executed. The switching program disconnects the storage device 1 and the host computer 2 and automatically disconnects the storage device 1 and the host computer 2 again after disconnection. Connect to
In addition, the host computer 2 is notified that the unclassified data block 133 and the first application program block 132 are used blocks, and the classified data block 135 and the second application program block 134 are used blocks. In this way, the user can perform data access to the unclassified data block 133.

  As described above, the storage device 1 stores the fingerprint authentication program and the switching program stored in the first application program block 132 and the second application program block 134 without the need to install a drive program in the host computer 2. Data access to the non-confidential data block 133 and the confidential data block 135, and until the user obtains authentication of the fingerprint authentication program, Cannot access. Thus, the data stored in the confidential data block 135 can be prevented from being stolen by a user who does not pass the authorization of the fingerprint authentication program.

  Further, the first application program block 132 can store an auto-execution program (autorun.inf), and the auto-execution program (autorun.inf) instructs opening of a password authentication program, thereby When the host computer 2 is connected, the host computer 2 automatically executes a password authentication program stored in the storage device 1.

Next, as shown in FIGS. 3 and 4, the storage device 1 of the present invention proceeds based on the following steps in use.
Step (200), start step (201), step of connecting the connection interface 11 installed in the storage device 1 to the host computer 2 (202), the storage device 1 and the first application program block 132 of the memory 13 The non-security holding data block 133 is set as a use block, and the second application program block 134 and the security holding data block 135 are set as a use stop block (203), and stored in the first application program block 132 Step (204) of executing the fingerprint authentication program, the user inputs the fingerprint using the fingerprint scanner 14, and the fingerprint scanner stores the fingerprint scan stored in the first application program block 132. Step (205) driven by the program, the fingerprint authentication program proceeds to step 206 if the fingerprint input by the user and the fingerprint characteristic of the user stored by the hidden block 131 are compared and matched, and to step 204 if not. Step (206), the storage device 1 automatically disconnects the connection with the host computer 2, and after disconnecting the connection, the storage device 1 automatically reconnects with the host computer 2 and the memory 13 The confidential data block 135 and the second application program block 134 are set as use blocks, and the non-security data block 133 and the first application program block 132 are set as use stop blocks (207), the second Application Step (208) of executing the switching program stored in the storage program block 134, the storage device 1 automatically disconnects the connection with the host computer 2, and after disconnecting the connection, the storage device 1 automatically Reconnect to the host computer 2 and set the non-confidentiality data block 133 and the first application program block 132 of the memory 13 as used blocks, and the confidentiality data block 135 and the second application program block 134 are disabled blocks Set as step (209), end

Subsequently, as shown in FIG. 5, there are a plurality of non-confidentiality data blocks 133 and confidentiality data blocks 135 installed in the memory 13 of still another optimum embodiment of the present invention, whereby a password authentication program or fingerprint authentication is performed. The program can control the operation of multiple unclassified data blocks 133 and classified data blocks 135 simultaneously.
Further, the second application program block 134 can store an encryption / decryption program, a computer setting program, a monitor setting program, or a compression / decompression program, whereby the storage device 1 can have a variety of different functions.

As described above, the embodiment of the present invention uses the password authentication program or the fingerprint authentication program stored in the first application program block divided by the memory, and whether the user ID is the same as the user ID in the hidden block. The data stored in the confidential data block can be prevented from being stolen by a user who does not pass the authorization of the authentication program, and without using a drive program in the host computer at the time of use. Well, it can improve the inconvenience of the well-known structure that had to be stored in the host computer connected to the drive program, and further password authentication program or fingerprint authentication stored in the first application program block divided by the memory Unclassified using the program To control the opening of lifting data blocks and confidentiality data block, the user can store data that requires confidentiality without being limited to the same block. Therefore, in the known structure in which the encryption / decryption operation can be performed only on a specific item or file in the past, it is impossible to maintain confidentiality for the entire disk block, Eliminates the inconvenience of usage that it is necessary to be restricted and that data that should be kept confidential cannot be managed arbitrarily.
Of course, the present invention is not limited to the above-described embodiments as long as the characteristics are not impaired.

It is a block chart of the optimal example of this invention. It is an operation | movement flowchart of the optimal Example of this invention. It is a block chart of another kind of optimum example of the present invention. It is an operation | movement flowchart of another optimal embodiment of this invention. It is a block chart of another optimum embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Storage device 11 Connection interface 12 Microcontroller 13 Memory 131 Hidden block 132 1st application program block 133 Unclassified data block 134 2nd application program block 135 Security data block 14 Fingerprint scanner 2 Host computer

Claims (12)

Storage devices is established the host computer and connecting interface electrically connected to pre-installed, and該連contact interface by concatenating enforceable microcontroller commands to the host computer transmits, the microcontroller memory And the memory is divided into a hidden block, a first application program block, an unclassified data block, and a classified data block,
The hidden block stores user passwords,
The first application program block stores a password authentication program;
When the host computer executes the password authentication program, the password authentication program requests the user to input a password, and the password authentication program compares the password entered by the user with the user password stored in the hidden block. And
One or more of the unclassified data blocks, and when the unclassified data blocks are connected to the host computer at the connection interface, directly provide the data in the access block to the host computer;
The confidential data block is one or more, and the confidential data block compares and authenticates the password entered by the user and the user password stored in the hidden block in the password authentication program, and then the data in the host computer access block. was subjected Hisage,
The memory is further divided into second application program blocks;
The password authentication program compares and compares the password entered by the user and the user password stored in the hidden block, automatically disconnects the connection between the storage device and the host computer, and disconnects the connection and then connects to the host computer again. and, a feature and a notification child to confidentiality data block and the second application program block and using block with respect to the host computer, and decommissioning block yet-confidentiality data blocks and the first application program block A portable storage device. The first application program block further stores an auto-execution program;
The portable storage device according to claim 1, wherein the storage device automatically executes a password authentication program when connected to a host computer installed in advance. Portable storage device of claim 1, wherein said second application program block, characterized in that the stored switching program or other application program. The switching program disconnects the connection between the storage device and the host computer at the time of execution by the user, and again connects to the host computer after disconnecting the connection, and the unsecured data block and the first application program are connected to the host computer. block and a used block, portable storage device of claim 3, wherein the notifying to the said confidentiality data blocks and said second application program block the use stop block. Storage devices is established the host computer electrically connected interface which connects to previously installed and該連contact interface by concatenating enforceable microcontroller commands to the host computer transmits, respectively the microcontroller fingerprint scanner And the memory is divided into a hidden block, a first application program block, an unsecured block, and a secured data block,
The hidden block stores the user's fingerprint characteristics;
The first application program block stores a fingerprint authentication scanning program and a fingerprint recognition program, and when the host computer executes the fingerprint authentication program, the fingerprint authentication program requests the user to input a fingerprint through a fingerprint scanner; And the fingerprint authentication program compares and contrasts the fingerprint inputted by the user and the fingerprint characteristic of the user stored by the hidden block, and the unclassified data block is one or more, and the unclassified data block is the connection interface. Connected to the host computer at and provides direct access to the data in the block to the host computer,
The security data block is one or more, and the security data block is compared in the fingerprint authentication program by comparing the fingerprint entered by the user with the fingerprint characteristic of the user stored in the hidden block, and after being matched, the block is stored in the host computer. subjected Hisage access to the data,
The memory is further divided into second application program blocks;
The fingerprint authentication program compares and compares the fingerprint entered by the user with the fingerprint characteristic of the user stored in the hidden block, automatically disconnects the connection between the storage device and the host computer, and disconnects the connection and then re-hosts. Concatenating with a computer to notify the host computer that the confidential data block and the second application program block are used blocks, and that the non-security data block and the first application program block are used blocks Features portable storage device. 6. The portable storage device according to claim 5, wherein the first application program block further stores an automatic execution program, and automatically executes a fingerprint authentication program when the storage device is connected to a host computer installed in advance. . 6. The portable storage device according to claim 5, wherein the second application program block stores a switching program or other application program. The switching program disconnects the connection between the storage device and the host computer at the time of execution by the user, disconnects the connection, and then connects to the host computer again. The unclassified data block and the first application program block are transferred to the host computer. 8. The portable storage device according to claim 7 , wherein the portable storage device is a use block, and notifies the confidential data block and the second application program block to be a use stop block. Claim 1 walk from 5 wherein the portable storage device, wherein the first application program block is a block of ISO9660 format or DOS format. The connecting interface, USB connecting interface IEEE1394, Serial ATA articulating interface, or claim 1 walk from 5 wherein the portable storage device, which is a memory card connected interface. The memory according to claim 1 walk portable storage device 5, wherein it is a flash memory or a hard disk. The storage device portable disk, a memory card, a micro device or claim 1 walk portable storage device 5, wherein it is a hard disk type storage devices.

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