TWI476675B - Flash drive with security device - Google Patents

Description

Drive with safety guard

The invention relates to a flash drive, in particular to a flash drive with a safety guard.

One of the most common ways to carry electronic data today is to store electronic data in a portable flash drive connected to a computer via a universal serial bus (USB), also known as a mobile disc. However, general flash drives do not have security features, so data is often lost, stolen or damaged due to improper operation of software or hardware, as listed below:

(1) Malicious access on software: Accessing the information on the drive has become an important medium for improper programs to steal important information or distribute viruses;

(2) Improper removal on the hardware: Unplugging the connected USB flash drive without executing the command to remove the flash drive, causing damage to the flash drive.

The safety protection scheme proposed by the invention can effectively reduce or avoid improper operation on the software or the hardware, thereby avoiding the loss, theft or damage of the data on the flash drive, and further improving the convenience of the flash drive.

In order to improve the security protection of electronic materials, avoid improper data access, and improve the convenience of the flash drive, the main features of the present invention are summarized as follows:

(1) Password lock (or electronic switch) and security firmware:

The password lock is used to set and store the security password; the security protection firmware is used to verify the password of the password lock and the password of the computer user, and only after the verification is passed, the data is written to the memory, thereby effectively preventing the computer from automatically writing. Enter the information to the flash drive.

(2) Link control button:

After the touch control button is pressed, the controller will safely disconnect the connection between the memory and the computer, thus preventing the user from unplugging the flash drive and damaging the data stored on the flash drive.

(3) Improve convenience:

The password lock can be an electronic lock (or electronic switch). The set security password can be displayed on the hardware to prevent the user from forgetting the security password, and at the same time avoid the computer automatically writing data to the flash drive; the link control button can be Sending a removal command through the controller to safely disconnect the USB flash drive from the computer, so that the user does not need to execute the command to remove the flash drive on the computer, thereby improving the convenience of the operation of the flash drive; The flash drive connected to the computer is in the exit state, and the connection control button can be used to perform the connection command to re-establish the connection with the computer.

The proposed solution of the invention utilizes a device such as a combination lock, a security protection firmware and a connection control button to enhance the security protection measures of the flash drive to avoid undesired operation on the hardware or the software, and at the same time improve the convenience of the flash drive, and the following embodiments are utilized. The technical features of the present invention will be described with reference to the drawings.

A block diagram of an embodiment of the present invention is shown in FIG. The flash drive 101 uses a universal serial bus (USB) port as a communication interface, and is called a USB interface 102. The memory 104 is used to store data, and the controller 103 is connected to the USB interface 102 and the memory 104 to control communication between the computer and the flash drive 101. The combination lock 106 and the connection control key 105 are connected to the controller 103 to control the registration and the connection and disconnection of the communication between the USB flash drive 101 and the computer, respectively. In addition, the drive 101 has a housing to protect internal electronic components, which is not shown in FIG.

The controller 103 stores the security guard firmware and executes the security guard firmware. The code lock 106 is an electronic lock, which can be a digital electronic lock or a binary electronic lock. It is an electronic lock implemented by an IC circuit, which can avoid the disadvantage that the soft type lock is easy to be invaded; in addition, the code lock 106 has a The display interface is used to present the password set by the password lock 106 to prevent the user from forgetting the security password. When the computer transmits the data to the flash drive 101, the controller 103 reads the password of the password lock 106 and the password of the computer user, and verifies the password of the password lock 106 and the password of the computer user through the security firmware. If the verification is successful, the controller 103 permits the data to be written to the memory 104; otherwise, if the verification fails, the controller 103 does not permit the data to be written to the memory 104.

The controller 103 can receive an instruction to connect the control keys 105 to safely disconnect or establish a connection between the memory 104 and the computer. When the flash drive connected to the computer does not execute the unloading command, press the connection control button to issue the removal command, so the flash drive can be freely removed; or the pen drive connected to the computer is actually removed, the user The communication between the flash drive and the computer can be established by the link control button 105.

One embodiment of the present invention utilizes a method of password verification to prevent a computer from automatically writing data to the flash drive 101. The method of password verification is to verify the password set by the password lock 106 and the password of the computer user when the computer transmits the data to the flash drive 101. If the verification is successful, the data is allowed to be written to the memory 104 of the flash drive 101, and vice versa. Write to the pen drive. The method of verifying the password is recorded in the controller 103 in a secure manner. The following embodiments of Figures 2a and 2b illustrate the spirit of the security protection method for writing data of the present invention.

The security protection method of the data writing of the embodiment shown in FIG. 2a includes the following steps. When the computer transmits the data to the flash drive, the verification password (S100) input by the user to the computer is read, and the security password set by the password lock is read (S200). Then, verify the password of the computer user and the password of the password lock (S300). If the verification is successful, the data is permitted to be written to the flash drive (S400); if the verification fails, the data is not allowed to be written to the flash drive (S500).

The difference between the security protection method written in the data of the embodiment shown in FIG. 2b and the above verification method is that the number of verification failures is calculated, and the details are as follows:

When the computer transmits data to the flash drive, it reads the password of the computer user (S100) and reads the password set by the password lock (S200). Then, verify the password of the computer user and the password of the password lock (S300). If the verification is successful, the data is permitted to be written to the flash drive (S400); if the verification fails, the number of verification failures is counted (S600), and the number of verification failures is compared with a threshold (S610). If the number of verification failures is higher than the critical value, the data is judged to be a malicious write operation, and the data is not allowed to be written to the flash drive (S500); if the number of verification failures does not reach the critical value, the user is required to re-enter the verification password. And continue to verify the second password (S300).

Verify that the password of the computer user and the password of the password lock (S300) can directly compare whether the two are consistent. If they are consistent, they indicate success, the inconsistency indicates failure, or verify an algorithm, that is, the password and/or password lock of the computer user. The password is obtained by the algorithm and the true and false values are obtained, which respectively indicate the success and failure of the verification.

In addition, after determining that the verification password is inconsistent with the security password or is determined to be maliciously written, the controller 103 may issue a warning message, which may notify the user by displaying a dialog box on a display of the computer, or may be set on the flash drive. The user is notified by a manner in which the indicator light displays an information light.

Figures 3a and 3b show an embodiment of a digital electronic lock and a binary electronic lock, respectively. The housing of the flash drive shown in Figure 3a has a control button 105 and a digital electronic lock 106. The number of bits of the electronic lock 106 can be adjusted as needed. This embodiment is a three-bit electronic lock. The value of each bit of the electronic lock 106 can be a number, a character, or a combination thereof. The value of each bit can be set by the setting button 107, and the bit value set by the three bits Form a password.

The housing of the flash drive shown in Figure 3b has a control button 105 and a binary electronic lock 106. The number of bits of the electronic lock 106 can be adjusted as needed. This embodiment is a four-bit electronic lock. The value of each bit of the electronic lock 106 can be true or false, and the four bit values are used to form a password.

In addition to the control button 105 and the digital electronic lock 106, the embodiment of the flash drive shown in FIG. 4 further includes a display light 108 for displaying the information light number in which the verification password and the security password are inconsistent.

The embodiments described above are merely illustrative of the technical spirit and the features of the present invention, and the objects of the present invention can be understood by those skilled in the art, and the scope of the present invention cannot be limited thereto. That is, the equivalent variations or modifications made by the spirit of the present invention should still be included in the scope of the present invention.

101. . . Flash drive

102. . . USB interface

103. . . Controller

104. . . Memory

105. . . Link control button

106. . . password

107. . . Setting button

108. . . Indicator

S100, S200, S300, S400, S500, S600, S610. . . step

FIG. 1 is a structural diagram of an embodiment of a flash drive with security protection according to the present invention.

2a and 2b are flowcharts showing an embodiment of a password verification method according to the present invention.

FIG. 3a and FIG. 3b are schematic diagrams showing the appearance of a portable flash drive according to an embodiment of the present invention for explaining a digital electronic lock and a binary electronic lock.

FIG. 4 is a schematic diagram showing the appearance of a flash drive embodiment with security protection according to the present invention for explaining an information light for displaying a verification light.

101. . . Flash drive

102. . . USB interface

103. . . Controller

104. . . Memory

105. . . Link control button

106. . . password

Claims (5)

A portable disk with security protection function includes: a connection port for connecting to a computer; a memory; a controller disposed between the connection port and the memory for storing and executing a security protection firmware a password lock, connected to the controller, wherein the security firmware verifies the password of the password lock and the computer password to determine whether the computer can write a data to the memory; and a link control button to connect the The controller is configured to receive a touch action to enable the controller to safely remove/establish a connection between the memory and the computer. A pen drive with security protection function as claimed in claim 1, wherein the password lock is an electronic lock. The security disk with the security protection function as claimed in claim 1, wherein the password lock has a display interface for presenting a security password set by the password lock. The security disk with the security protection function as claimed in claim 1, wherein when the computer transmits the data to the memory, the controller executes the security firmware method, and the password of the password lock is verified with the computer User password to permit or deny writing the data to the memory. The pen drive with the security protection function as claimed in claim 4 further includes a display light connected to the controller, wherein when the verification fails, the display light displays an information light.