JP2010103967A - Intelligent cipher key apparatus for enhancing pin code input security and its method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the security of inputting the PIN code to a user-side terminal. <P>SOLUTION: An intelligent cipher key apparatus includes: a storage module for storing a setting PIN code; a liquid crystal display for displaying candidate characters and selected markings; a selective acknowledgement unit for selecting a character to be compared from the candidate characters by controlling the selected markings of the liquid crystal display; a comparison module for comparing the character to be compared selected by the selective acknowledgement unit with the setting PIN code stored in the storage module; and an information security module for performing information security operation under the confirmed access right of the character to be compared passing the authentication of the comparison module. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to the field of information security, and more particularly to an intelligent secret key apparatus and method for improving the security of PIN code input.

  In recent years, a rapidly developing network has provided great convenience in daily life, and people use the network more and more frequently. Identification, network bank, VPN (Virtual Private Network, also known as virtual private network) Various activities such as.

  Against this background, network information security is increasingly important. In recent years, hardware devices that are portable and can be used for mobile use have been developed as information safety products. This hardware device is usually called an intelligent secret key device, and is a small hardware device equipped with a microprocessor. The intelligent secret key device is connected to the host via the host data communication interface. The processor in the apparatus generally uses a security chip, and implements functions such as generation of a secret key, secure storage of the secret key, and presetting of an encryption algorithm through a built-in security mechanism. Since the calculation related to the secret key is executed completely inside the intelligent secret key device, the security of the intelligent secret key device is high. Since the intelligent secret key device has the above-mentioned advantages, it can be applied to fields such as identity authentication, network banking, and VPN.

  The security chip has characteristics that are more conspicuous in terms of safety performance, in addition to various characteristics of the general-purpose plug-in microcontroller. The security chip is specially processed on the structure in consideration of the safety performance when designing the chip.

  For example, a specific security core is used for the security chip, and this security core is used to realize hardware source / access authority management, and can support a plurality of states having different authority definitions, and can execute a command execution time (command Supports randomization). The security chip interrupt system can support the conversion of the chip state, thus realizing control over different levels of safety level to support multi-application implementation. Further, the security chip may have an MMU (Memory Management Unit), which is used for separation of logical address and physical address and realization of address mapping. In addition, the hardware firewall is configured in cooperation with different states supported by the core. Also, the security chip interrupt system can support switching between system database and authority transmission between user program interfaces. As the storage medium of the security chip, a nonvolatile storage medium or the like may be used.

  In order to ensure safety performance, the security chip is typically TCG (Trusted Computing Group) TPM (Trusted Platform Module) V1.2 specification, ISO (International Standardize Organization), etc. ) 15408 standard or related standards such as China secret key (encryption key) management committee standards and related certification are required to pass. For the time being, there are quite a few security chips available in the market. Among them, ST19WP18 (trade name) microcontroller manufactured by STMicroelectronics is a “common standard” evaluation guarantee that the ISO15408 standard is one of the highest standards for similar products. Received level “EAL5 +” (latest version) certification. The security chip includes a smart card chip.

  At present, as a method of inputting information such as a user PIN code, transaction amount, verification code, etc., in most cases, other than biometric recognition technology such as fingerprint equipment, the PIN code is made intelligent via an input device of the user side host, such as a keyboard. PIN code authentication by inputting to the private key device, or information such as transaction amount, verification code, etc. is transmitted to the intelligent private key device via the input device of the user side host, such as a keyboard, for signature encryption And the like, and further transmitting this from the user terminal to the service terminal via the network for authentication.

  However, in the prior art, since the user terminal is usually a user personal computer, the security level is low, so that it is easily attacked by hackers or infected with a Trojan horse virus or the like. Therefore, when the user-side computer is remotely controlled by a hacker, Trojan horse virus, etc., after transaction information is easily transmitted to the intelligent secret key device and PIN code authentication or signature encryption processing is performed, By sending it to the service terminal and verifying it, the illegal user's identity information will be stolen and illegal transactions will be carried out. However, there is a problem that the process is often not discovered by the user, and the normal transaction of the legitimate user is exposed to a great risk for safety, and in an extreme case, it causes an economic loss to the user.

  An intelligent secret key device using biometric recognition technology such as fingerprint verification can solve the inconvenience of catching user information, but is very expensive because it uses biometric recognition technology such as fingerprint verification. Therefore, the intelligent secret key device causes an increase in user usage cost, limits its capacity and weight to a certain degree, and brings about many inconveniences for the spread of intelligent secret key devices and applications. Become.

  The present invention provides an intelligent secret key device and method for improving the security of PIN code input.

  The intelligent secret key device according to the present invention is an intelligent secret key device that improves the security of PIN code input, and includes a control module, an information safety module connected to the control module, a USB interface module, a liquid crystal display, and a selection A confirmation device, a storage module, and a verification module are provided.

  The liquid crystal display displays candidate characters and selection marks.

  The storage module stores a set PIN code in advance.

  The selection confirmation device controls movement of a selection mark on the liquid crystal display, and selects a collation target character from the candidate characters for each digit.

  The collation module collates the character to be collated with the set PIN code stored in advance in the storage module for each digit selected by the selection confirmation device, and if the collation results in a match, the authentication is successful. If there is a mismatch, authentication fails.

  The information safety module executes an information safety operation under the access authority determined by the verification target character that has been successfully authenticated by the verification module.

  The candidate character is a printable character, specifically, a number, a large alphabet, a small letter, or an inputable symbol.

  The selection confirmation device includes a selection unit, a preliminary selection unit, a storage unit, and a confirmation unit, and the selection unit, the preliminary selection unit, the storage unit, and the confirmation unit are connected to a control module, respectively, and the selection unit is connected to the liquid crystal display. The movement of the selection mark is controlled, and the preliminary selection unit confirms the character at the selection mark selection position and stores it in the storage unit for each digit, and the confirmation unit records in the storage unit by the preliminary selection unit It is confirmed whether the selected character is a collation target character.

  Each of the preliminary selection unit and the confirmation unit is a push button, a touch key, a small switch, a photoelectric switch, a sensor type switch, a rotary knob, or a linearly movable shift key.

  The preliminary selection unit and the confirmation unit may share the same push button, touch key, small switch, photoelectric switch, sensor type switch, rotary knob, or linearly movable shift key. A distinction is made according to the number of operations or the width (length).

  The selection confirmation device is further provided with a cancellation unit for canceling the confirmation operation of the confirmation unit.

  The selection confirmation device further includes a cancellation unit for canceling the confirmation operation of the confirmation unit or the preliminary selection unit.

  The selection confirmation device is further provided with an activation unit for activating an operation for displaying a candidate character and a selection mark on the liquid crystal display.

  The intelligent secret key device further includes a return unit connected to the control module for returning the selection mark to a preset position under the control of the control module.

  The preset position is the start digit, end digit or intermediate digit of the candidate character. The activation unit, cancellation unit, or return unit is a push button, a touch key, a small switch, a photoelectric switch, a sensor switch, a rotary knob, or a linearly movable shift key.

  At least two of the preliminary selection unit, confirmation unit, start-up unit, cancellation unit, and return unit share the same push button, touch key, small switch, photoelectric switch, sensor switch, rotary knob, or linearly movable shift key Alternatively, the shared device is distinguished according to the number of operations or the width (length).

  The intelligent secret key device further includes a scramble device for obtaining a new collation target character by converting the collation target character selected by the selection confirmation device one by one according to a preset rule.

  The collation module relatively collates a new collation target character acquired by the scramble device with a set PIN code stored in the storage module in advance, and if the collation results in a match, the authentication is successful. In the case of, authentication fails.

  Specific methods of the conversion include mapping, rearrangement or reverse order arrangement.

  The control module is a security chip.

  At least one of the information safety module and the USB interface module is integrated together with the control module in one security chip.

  Specifically, the selection mark is a cursor, a selection box, or a shadow box.

  The present invention also provides a method for improving the security of PIN code input of an intelligent secret key device. The method has the following steps.

  The intelligent secret key device stores and sets the PIN code in advance.

Establishing a connection between the intelligent secret key device and the host;
An intelligent secret key device displaying a candidate character and a selection mark on the liquid crystal display;
An intelligent secret key device controlling the movement of the selection mark on the liquid crystal display to select a character to be collated from the candidate characters for each digit; and
The intelligent secret key device collates the selected verification target character with the set PIN code stored in advance in the intelligent secret key device for each corresponding digit, and if both match, the authentication is successful. This is a step in which the information safe operation is executed according to the access authority determined by the character to be verified that has been successfully authenticated, and the authentication is failed and the operation is terminated if they do not match.

  The candidate character is a printable character, specifically, a number, a large alphabet, a small letter, or an inputable symbol.

  The step of the intelligent secret key device controlling the movement of the selection mark on the liquid crystal display to select the character to be collated from the candidate characters for each digit, specifically, the intelligent secret key device includes the liquid crystal display The movement of the selection mark is controlled, the character selected by the selection mark is preliminarily selected, stored and recorded for each digit, and it is confirmed that the character selected by the preliminary selection is the character to be collated. The preliminary selection and recording operation is continued.

  The devices for the preliminary selection operation and the confirmation operation are a push button, a touch key, a small switch, a photoelectric switch, a sensor type switch, a rotary knob, or a linearly movable shift key.

  The preliminary selection operation and the confirmation operation share the same push button, touch key, small switch, photoelectric switch, sensor type switch, rotary knob, or linearly movable shift key, and the number of operations or the width (length). Correspondingly, the preliminary selection operation and the confirmation operation are distinguished.

  The method further includes the step of canceling the selection mark movement operation, the confirmation operation, and / or the preliminary selection operation.

  The intelligent secret key device further includes an operation of starting the liquid crystal display before displaying the candidate character and the selection mark on the liquid crystal display.

  The step of displaying the candidate character and the selection mark on the liquid crystal display by the intelligent secret key device further includes an operation of returning the selection mark to a preset position, where the position is specifically the start of the candidate character. Digit, end digit or intermediate digit.

  The part of the canceling operation, starting operation or returning operation is a push button, a touch key, a small switch, a photoelectric switch, a sensor type switch, a rotary knob, or a linearly movable shift key.

  At least two of the preliminary selection operation, confirmation operation, cancel operation, start operation and return operation share the same push button, touch key, small switch, photoelectric switch, sensor switch, rotary knob or linearly movable shift key. Correspondingly, the corresponding operation type is distinguished by the number of operations or the width (length).

  The step of the intelligent secret key device controlling the movement of the selection mark on the liquid crystal display and selecting the verification target character from the candidate characters for each digit further includes the verification target character selected by the intelligent secret key device. It includes an operation for converting each character in accordance with preset rules and acquiring a new character to be collated.

  The intelligent secret key device collates the new character to be collated with the set PIN code stored in advance in the intelligent secret key device, and if the two match, the authentication is successful and the authentication succeeds. The information safe operation is executed according to the access authority determined by the new character to be collated, and if the two do not match, the operation is terminated as an authentication failure.

  The specific method of the conversion is mapping, rearrangement, or reverse order arrangement.

  Specifically, the selection mark is a cursor, a selection box, or a shadow box.

  The present invention controls the selection mark on the liquid crystal display of the intelligent secret key device and can sequentially select the character to be collated, for example, at random, so that the user side computer is remotely controlled by a hacker or a horse-type virus or the like. It is possible to effectively avoid the risk that the transaction is illegally performed by stealing the identity information of the user, to realize further improvement of safety, and to protect the user from economic loss.

It is a block diagram which shows the structure of the intelligent type private key apparatus which improves the security of PIN code input which Example 1 of this invention provides. It is a block diagram which shows the structure of the intelligent type private key apparatus which improves the security of PIN code input which Example 1 of this invention provides. It is a flowchart of the method of improving the security with respect to PIN code input of the intelligent private key apparatus which Example 2 of this invention provides.

  In order to clarify the objects, technical solutions, and advantages of the present invention, the implementation method of the present invention will be described below in more detail with reference to the drawings.

  As shown in FIG. 1, an embodiment of the present invention provides an intelligent secret key device that improves the security of PIN code input. The intelligent secret key device includes a control module and an information security module connected to the control module, a USB interface module, a liquid crystal display, a selection confirmation device, a storage module, and a verification module.

  Among them, the liquid crystal display displays candidate characters and selection marks. Specifically, the selection mark is in one of the forms such as a cursor, a selection box, or a shadow box, and the candidate character is a printable character, specifically, a number, uppercase alphabet, lowercase, or an inputable symbol. .

  The storage module stores the set PIN code in advance.

  The selection confirmation device controls the movement of the selection mark on the liquid crystal display and selects a collation target character from the above candidate characters for each digit. For example, if the candidate character is a number “0-9”, the number “0-9” is displayed on the liquid crystal display, and the selection confirmation device controls the movement of the selection mark on the liquid crystal display, From the numbers “0-9”, a number that is a character to be collated, for example, “13567” is sequentially selected as a character to be collated.

  The collation module sequentially collates the character to be collated selected by the selection confirmation device with the corresponding digit character using the PIN code stored in the storage module, and if it matches, the authentication is successful, and if it does not match, the authentication is performed. Let it fail.

  The information safety module executes the information safety operation under the access authority determined by the verification target character that has been successfully authenticated by the verification module. Specifically, when a plurality of users share an intelligent secret key device, the verification module verifies the verification target character that has been successfully authenticated, finds the corresponding user identity information, and determines the corresponding access authority. Then, the information safety module executes the information safety operation according to the corresponding authority under the control of the control module. Specifically, information security operations include authority management, algorithm processing, etc., for example, by verifying and recognizing a digital signature or proof of the document sender's identity, the user regulates access authority to software, networks, etc. Or prevent unauthorized tampering. Also, a website such as a bank identifies the legitimacy of the user who remotely operates the signature information. In addition, information security operations give access restriction information to some data to prevent illegal access or operation to intelligent secret key devices, and to data, documents, etc. in intelligent secret key devices An encryption process or a decryption process is performed. The required algorithm is mainly realized through the related security design inside the security chip (for example, smart card chip), and the security chip is subjected to the following special processing on the structure in consideration of safety performance and the like at the time of chip design.

  For example, a specific security core is used for a safety chip, and this security core is used to realize hardware source / access authority management, supports a plurality of states having different authority definitions, and command execution time ( (Randomization of command cycle) is supported. Accordingly, there is a process such as greatly improving safety.

  Specifically, the selection confirmation device includes a selection unit, a preliminary selection unit, a storage unit, and a confirmation unit. Of these, the selection unit controls the movement of the selection mark on the liquid crystal display, and the preliminary selection unit selects the selection mark described above. The one-digit character at the position is confirmed and recorded in the storage unit for each digit, and the confirmation unit confirms whether the character recorded in the storage unit constitutes the collation target character by the preliminary selection unit.

  Specifically, the preliminary selection unit or the confirmation unit may be a push button, a touch key, a small switch, a photoelectric switch, a sensor switch, a rotary knob, a linearly movable shift key, or the like. Further, the preliminary selection unit and the confirmation unit may share the same push button, touch key, small switch, photoelectric switch, sensor switch, rotary knob, or linearly movable shift key. Or it distinguishes corresponding to a width | variety (length).

  For example, when the preliminary selection unit and the confirmation unit share the same push button and are distinguished by the number of times, for example, the preliminary selection operation is indicated by pressing the push button only once, and the push button is continuously pressed twice. Confirmation operation can be shown with. In addition, when the preliminary selection unit and the confirmation unit share the same rotary knob and are distinguished by the width (length), for example, the preliminary selection operation is performed by rotating the rotary knob that adjusts the operation width (length) by 90 degrees. The confirmation operation can be indicated by rotating the rotary knob 180 degrees.

  For the convenience of use, the selection confirmation device may further include a cancellation unit for canceling the operation of the confirmation unit or the preliminary selection unit.

  The selection confirmation device further includes an activation unit for activating an operation for displaying a candidate character and a selection mark on the liquid crystal display.

  As shown in FIG. 2, the intelligent secret key device further includes a return unit connected to the control module and for returning the selection mark to a preset position under the control of the control module. The preset positions are the start digit, end digit, intermediate digit, etc. of the candidate character. This provides greater convenience to the movement of the selection mark each time. Less time is required.

  Among them, the activation unit, the cancellation unit, or the return unit may specifically be a push button, a touch key, a small switch, a photoelectric switch, a sensor type switch, a rotary knob, a linearly movable shift key, or the like. Note that at least two of the preliminary selection unit, confirmation unit, start-up unit, cancellation unit, and return unit share the same push button, touch key, small switch, photoelectric switch, sensor switch, rotary knob, or linearly movable shift key. As described above, the shared device is distinguished according to the number of times or the width (length).

  As shown in FIG. 2, the intelligent secret key device further includes a scramble device connected to the control module, and the scramble device converts the matching target character selected by the selection confirmation device one by one according to the preset rules. To obtain a new collation target character. Specific methods of this conversion include mapping, rearrangement, reverse order arrangement, and the like.

  The collation module collates the new collation target character acquired by the scramble device with the set PIN code stored in the storage module, and if the collation results in a match, the authentication is successful. Authentication fails.

  In order to further increase safety, the control module in the present embodiment is configured using a security chip (including a smart card chip). In order to enhance safety through the security design function inside the security chip, at least one of the information safety module and the USB interface module is collected together with the control module in one security chip.

  As shown in FIG. 3, the embodiment of the present invention also provides a method for improving security when inputting a PIN code to an intelligent secret key device.

  It is assumed that the set PIN code is stored in the storage module in advance.

  In step 301, a connection between the intelligent secret key device and the host is established.

  In step 302, the intelligent secret key device displays candidate characters and selection marks on the liquid crystal display. Specifically, the selection mark may be in the form of a cursor, a selection box, a shadow box, etc., and the candidate character is a printable character, specifically, a number, upper and lower case letters, and a symbol that can be entered. is there.

  In step 303, the intelligent secret key device controls the movement of the selection mark on the liquid crystal display, and selects a collation target character from the above candidate characters for each digit. For example, if the candidate character is a number “0-9”, the number “0-9” is displayed on the liquid crystal display, and the intelligent secret key device controls the movement of the selection mark on the liquid crystal display to A verification target character is selected from the numbers “0-9”, and for example, “13567” is sequentially selected as the verification target character.

  There are various ways in which the intelligent secret key device selects a character to be verified by controlling a selection mark on the liquid crystal display. For example, the intelligent secret key device controls the movement of the selection mark on the liquid crystal display, pre-selects the one-digit character selected by the pre-selection selection mark, and stores / records it for each digit. The preliminary selection / recording is continued until the preliminarily selected / recorded character information is configured as a collation target character.

  Among them, the preliminary selection operation and the confirmation operation device each employ a push button, a touch key, a small switch, a photoelectric switch, a sensor type switch, a rotary knob, or a linearly movable shift key. Or, when the same push button, touch key, small switch, photoelectric switch, sensor switch, rotary knob, or linearly movable shift key is used for the same preselection operation and confirmation operation, the number of operations or the width (length) of the operation The preliminary selection operation and the confirmation operation are distinguished from each other. For example, when the preliminary selection operation and the confirmation operation share the same push button and distinguish the two by the number of times, for example, the preliminary selection operation is indicated by pressing the push button only once, and the push button is continuously pressed twice. Press to indicate a confirmation operation. In addition, when the preliminary selection operation and the confirmation operation share the same rotation knob and distinguish the two by the width (length), for example, the rotation knob for adjusting the operation width (length) may be rotated 90 degrees. This indicates a preliminary selection operation, and rotating the rotary knob 180 degrees indicates a confirmation operation.

  In step 304, the intelligent secret key device collates the selected verification target character with the PIN code stored in advance in the intelligent secret key device. If so, step 306 is executed.

  In step 305, the information safety operation is executed according to the access authority determined by the verification target character that has been successfully authenticated.

  Step 306 is an end step.

  Prior to step 301, an activation operation for displaying a candidate character and a selection mark on the liquid crystal display is further included.

  Step 303 further includes a selection mark movement cancel operation, a confirmation operation, and / or a preliminary selection operation.

  Step 303 further includes an operation of returning the selection mark to a preset position. This position is specifically the start digit, end digit, or intermediate digit of the candidate character, which provides greater convenience when the selection mark is moved each time, and when returning to the intermediate position every time. Less time is required to move the selection mark.

  Among them, a push button, a touch key, a small switch, a photoelectric switch, a sensor type switch, a rotary knob, or a linearly movable shift key is adopted as a part of the preliminary selection operation, the confirmation operation, the cancel operation, the start operation and the return operation. Or at least two of the preliminary selection operation, confirmation operation, cancel operation, start operation and return operation are the same push button, touch key, small switch, photoelectric switch, sensor type switch, rotary knob or linearly movable shift key. They may be shared, and the corresponding operation type is distinguished by the number of operations or the width (length). The specific method is the same as described above.

  Preferably, after the execution of step 303 and before the execution of step 304, the intelligent secret key device converts the selected collation target character step by step according to preset rules to obtain a new collation target character. Can further be included. Specific methods of this conversion include mapping, rearrangement, reverse order arrangement, etc. For example, when the character to be collated selected in the above step is “13567”, new collation obtained by making this a reverse order arrangement The target character is “76531”.

  Specifically, the step 304 collates the new collation target character acquired by the intelligent secret key device with the PIN code stored in advance, and executes the above-mentioned step 305 with successful authentication if they match. If they do not match, authentication is failed and step 306 described above is executed.

  The present invention selects and receives one of the characters for each digit of the password registered and stored in advance, selects the character of the next digit by matching and matches, and matches all digits of the password. As a result, the code code is confirmed to be coincident, so that it can be used to ensure the safety of the input for a plurality of digits in various systems.

  As mentioned above, although this invention was demonstrated in detail with reference to embodiment and an Example, this invention is not limited to the said embodiment and Example. Various changes that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention.

Claims (30)

An intelligent secret key device that improves the security of PIN code input,
The device includes a control module and an information safety module connected to the control module, a USB interface module, a liquid crystal display, a selection confirmation device, a storage module, and a verification module,
The storage module stores a set PIN code in advance,
The liquid crystal display displays candidate characters and selection marks,
The selection confirmation device controls the movement of the selection mark on the liquid crystal display, selects a collation target character from the candidate characters for each digit,
The collation module collates the collation target character selected by the selection confirmation device with the set PIN code stored in advance in the storage module for each digit, and as a result of the collation, the authentication is successful. If it does not match, authentication fails,
The information safety module performs an information safety operation under the access authority determined by the verification target character that has been successfully authenticated by the verification module.
An intelligent secret key device that improves the security of PIN code input. The intelligent secret key device for improving the security of PIN code input according to claim 1, wherein the candidate character is a character including a printable number, a large alphabet, a small letter, and a symbol that can be input. The selection confirmation device includes a selection unit, a preliminary selection unit, a storage unit, and a confirmation unit,
Each of the selection unit, the preliminary selection unit, the storage unit, and the confirmation unit is connected to a control module,
The selection unit controls the movement of the selection mark on the liquid crystal display,
The preliminary selection unit confirms the character at the selection mark selection position, and records this in the storage unit for each digit,
The confirmation unit confirms whether the character recorded in the storage unit by the preliminary selection unit is a collation target character;
The intelligent secret key device according to claim 1, which improves the security of PIN code input. Each of the preliminary selection unit and the confirmation unit is a push button, a touch key, a small switch, a photoelectric switch, a sensor type switch, a rotary knob, or a linearly movable shift key.
4. The intelligent secret key device according to claim 3, which improves the security of PIN code input. The preliminary selection unit and the confirmation unit share the same push button, touch key, small switch, photoelectric switch, sensor switch, rotary knob, or linearly movable shift key,
The preliminary selection unit and the confirmation unit are distinguished by the number of operations or the width (length).
5. The intelligent secret key device according to claim 4, which improves the security of PIN code input. The selection confirmation device is further provided with a cancellation unit for canceling the confirmation operation of the confirmation unit,
4. The intelligent secret key device according to claim 3, which improves the security of PIN code input. The selection confirmation device is further provided with a cancellation unit for canceling the confirmation operation of the confirmation unit or / and the preliminary selection unit,
4. The intelligent secret key device according to claim 3, which improves the security of PIN code input. The selection confirmation device further includes an activation unit for activating an operation for displaying a candidate character and a selection mark on the liquid crystal display.
4. The intelligent secret key device according to claim 3, which improves the security of PIN code input. The intelligent secret key device further includes a return unit connected to the control module for returning the selection mark to a preset position under the control of the control module.
The intelligent secret key device according to claim 1, which improves the security of PIN code input. The preset position is the start digit, end digit or intermediate digit of the candidate character.
10. The intelligent secret key device according to claim 9, which improves the security of PIN code input. Each of the activation unit, the cancellation unit, and the return unit is a push button, a touch key, a small switch, a photoelectric switch, a sensor type switch, a rotary knob, or a linearly movable shift key.
The intelligent secret key device for improving the security of PIN code input according to any one of claims 6 to 9. At least two of the preliminary selection unit, the confirmation unit, the activation unit, the cancellation unit, and the return unit share the same push button, touch key, small switch, photoelectric switch, sensor switch, rotary knob, or linearly movable shift key. ,
Each of the shared parts is distinguished by the number of operations or the width (length).
The intelligent secret key device for improving the security of PIN code input according to claim 11. The intelligent secret key device further includes a scramble device for obtaining a new collation target character by converting the collation target character selected by the selection confirmation device according to a preset rule.
The collation module collates a new character to be collated acquired by the scrambler with a set PIN code stored in advance in the storage module for each digit. As a result of the collation, the authentication succeeds. And authentication fails if they do not match,
The intelligent secret key device according to claim 1, which improves the security of PIN code input.   14. The intelligent secret key device for improving the security of PIN code input according to claim 13, wherein the specific method of the conversion includes mapping, rearrangement, or reverse order arrangement.   2. The intelligent secret key device according to claim 1, wherein the control module is a security chip. At least one of the information safety module and the USB interface module is aggregated together with the control module in one security chip.
The intelligent secret key device according to claim 1, which improves the security of PIN code input.   The intelligent secret key device for improving the security of PIN code input according to claim 1, wherein the selection mark is specifically a cursor, a selection box, or a shadow box. A method for improving the security of PIN code input in an intelligent secret key device, wherein the intelligent secret key device stores and sets a PIN code in advance,
Establishing a connection between the intelligent secret key device and the host;
An intelligent secret key device displaying a candidate character and a selection mark on the liquid crystal display;
An intelligent secret key device that controls movement of a selection mark on the liquid crystal display to select a character to be verified from the candidate characters for each digit; and
The intelligent secret key device collates the selected character to be collated with the set PIN code stored in advance in the intelligent secret key device for each digit, and if both match, the authentication is successful and the authentication succeeds. Performing an information safety operation according to the access authority determined by the character to be collated, and ending the operation with an authentication failure if there is a mismatch,
A method for improving the security of PIN code input in an intelligent secret key device. The candidate character is a printable numeral, upper case alphabet, lower case letter and / or an inputable symbol.
The method for improving the security of PIN code input in the intelligent secret key device according to claim 18. When the intelligent secret key device controls the movement of the selection mark of the liquid crystal display, the character selected by the selection mark is preselected and stored / recorded for each digit, and the preselected / recorded Continue the preliminary selection and recording until it is confirmed that the character is the character to be verified.
The method for improving PIN code input security in the intelligent secret key device according to claim 18. Each part of the preliminary selection operation and the confirmation operation is a push button, a touch key, a small switch, a photoelectric switch, a sensor type switch, a rotary knob, or a linearly movable shift key.
The method for improving the security of PIN code input in the intelligent secret key device according to claim 20. The preliminary selection operation and the confirmation operation share the same push button, touch key, small switch, photoelectric switch, sensor type switch, rotary knob or linearly movable shift key,
Distinguishing between the preliminary selection operation and the confirmation operation by the number of operations or width (length),
The method for improving the security of PIN code input in the intelligent secret key device according to claim 21.   The method of claim 20, further comprising the step of canceling the selection mark movement operation, the confirmation operation, and / or the preliminary selection operation. Method. Before the intelligent secret key device displays the candidate character and the selection mark on the liquid crystal display, it further has an operation of starting the liquid crystal display.
The method for improving PIN code input security in the intelligent secret key device according to claim 18. The intelligent secret key device displaying the candidate character and the selection mark on the liquid crystal display further includes an operation of returning the selection mark to a preset position,
The position is the start digit, end digit or intermediate digit of the candidate character.
The method for improving the security of PIN code input in the intelligent secret key device according to claim 18. Each part of the cancel operation, the start operation and the return operation is a push button, a touch key, a small switch, a photoelectric switch, a sensor type switch, a rotary knob, or a linearly movable shift key.
The method for improving the security of PIN code input in the intelligent secret key device according to any one of claims 23 to 25. At least two of the preliminary selection operation, confirmation operation, cancel operation, start operation, and return operation share the same push button, touch key, small switch, photoelectric switch, sensor switch, rotary knob, or linearly movable shift key And
Differentiate the corresponding operation type by the number of operations or width (length),
27. The method for improving the security of PIN code input in the intelligent secret key device according to claim 26. The intelligent secret key device controls the movement of the selection mark on the liquid crystal display to select a collation target character from the candidate characters for each digit.
The intelligent secret key device has an operation of acquiring a new collation target character by converting the collation target character selected according to the preset rules one by one,
The intelligent secret key device collates the new character to be collated with the set PIN code stored in advance in the intelligent secret key device, and if the two match, the authentication succeeds, and the new collation succeeds in the authentication. The information safe operation is executed according to the access authority determined by the target character, and in the case of mismatch, the authentication is failed and this operation is terminated.
The method for improving the security of PIN code input in the intelligent secret key device according to claim 18.   29. The method of improving security of input of an intelligent secret key device PIN code according to claim 28, wherein the conversion method includes mapping, rearrangement, or reverse order arrangement.   The method for improving the security of PIN code input in the intelligent secret key device according to claim 18, wherein the selection mark is a cursor, a selection box, or a shadow box.

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