CN111914312A - Terminal password keyboard system based on film card hardware and PIN code protection method - Google Patents
Terminal password keyboard system based on film card hardware and PIN code protection method Download PDFInfo
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- CN111914312A CN111914312A CN202010788424.4A CN202010788424A CN111914312A CN 111914312 A CN111914312 A CN 111914312A CN 202010788424 A CN202010788424 A CN 202010788424A CN 111914312 A CN111914312 A CN 111914312A
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000012795 verification Methods 0.000 claims abstract description 12
- 238000004891 communication Methods 0.000 claims abstract description 5
- 238000013507 mapping Methods 0.000 claims description 15
- 238000012545 processing Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 description 5
- ZXQYGBMAQZUVMI-GCMPRSNUSA-N gamma-cyhalothrin Chemical compound CC1(C)[C@@H](\C=C(/Cl)C(F)(F)F)[C@H]1C(=O)O[C@H](C#N)C1=CC=CC(OC=2C=CC=CC=2)=C1 ZXQYGBMAQZUVMI-GCMPRSNUSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
- G06F21/82—Protecting input, output or interconnection devices
- G06F21/83—Protecting input, output or interconnection devices input devices, e.g. keyboards, mice or controllers thereof
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
- G06F21/31—User authentication
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Abstract
The invention discloses a terminal password keyboard system based on a film card hardware, which comprises: a terminal password keyboard module loaded in a terminal application program; and the pad pasting card password keyboard module is loaded in the pad pasting card application program and mutually exchanges information with the terminal password keyboard module through the bottom layer communication module. The terminal password keyboard module comprises: the keyboard PIN code line protection module, the keyboard initialization module, the keyboard input receiving module and the keyboard PIN code encryption module; pad pasting card password keyboard module includes: the system comprises a pad pasting card PIN code line protection module, a pad pasting card PIN code receiving module, a pad pasting card PIN code decryption module and a pad pasting card PIN code verification module. The invention also discloses a PIN code protection method based on the terminal password keyboard system. The invention greatly reduces the possibility of the PIN code of the user being cracked.
Description
Technical Field
The invention relates to the technical field of communication security, in particular to a terminal password keyboard system based on a pad card hardware and a PIN (personal identification number) code (or signature password or password and the like, hereinafter referred to as PIN code) protection method.
Background
The film card is used as a hardware carrier, and is used in cooperation with a terminal application program to provide a shield-like function for the application program, and the function is widely used in application systems such as mobile phone banking and electronic identity (eID) in the public network. In the process of using the film sticking card, a user needs to input a personal PIN (or a signature password or a password, etc., hereinafter referred to as PIN code) through a terminal application program popup box so as to carry out identity verification, the PIN code is stored in a film sticking card carrier, after the PIN code input by the user is transmitted into the carrier, a program on the film sticking card can judge whether the input PIN code is consistent with the PIN code stored in the carrier, if so, next operation (such as signature) is carried out, otherwise, the next operation is refused. Therefore, the purpose of verifying the identity validity of the user is achieved, and the method of using the hardware carrier to replace a shield greatly improves the safety compared with a method without the carrier.
Currently, the PIN code is input on the terminal application program, and a native keyboard module provided by a terminal operating system (such as a mobile phone OS) is generally adopted, and the use of such a keyboard may cause two possible risks: one is that the position of the number or character on the interface for inputting the PIN code by the user is relatively fixed, so that a third-party program such as a Trojan horse program can carry out conjecture by monitoring the coordinate position of the interface when the user clicks, and the real PIN code of the user can be guessed; and the other is that when the PIN code data is transmitted into the film card carrier from the terminal application program, the data transmission between the two devices needs to be transmitted through the connecting line of the metal contact, the message can be captured by a third party by monitoring the electrical characteristics on the connecting line of the contact, and if the PIN code is transmitted in a plaintext mode, the plaintext data can be estimated by the monitoring program through monitoring the electrical characteristics.
Disclosure of Invention
The invention aims to provide a terminal password keyboard system based on a film card hardware and a PIN code protection method, which greatly reduce the possibility of cracking a user PIN code.
The technical scheme for realizing the purpose is as follows:
the invention relates to a terminal password keyboard system based on a film card hardware, which comprises:
a terminal password keyboard module loaded in a terminal application program;
the pad pasting card password keyboard module is loaded in the pad pasting card application program and mutually exchanges information with the terminal password keyboard module through the bottom layer communication module;
wherein, the terminal password keyboard module includes:
the keyboard PIN code line protection module is used for requesting a line protection public key and a random number to the pad card password keyboard module after the terminal password keyboard module receives a PIN code input and verification request;
the keyboard initialization module is used for initializing a keyboard and generating a random disordered keyboard number and character mapping table;
the keyboard input receiving module receives an input event of a user and obtains a PIN code input by the user according to the character mapping table; and
the keyboard PIN code encryption module is used for encrypting PIN code plaintext data and random number input by a user by using a line protection public key to obtain PIN code ciphertext data;
pad pasting card password keyboard module includes:
the circuit protection module is used for generating a film-coated card PIN code circuit protection module for protecting a public and private key pair and a random number;
the pad pasting card PIN code receiving module is used for receiving PIN code ciphertext data;
the film card PIN code decryption module decrypts the PIN code ciphertext data according to the middle private key of the line protection public and private key pair to obtain PIN code plaintext data and random number; and
and the pad pasting card PIN code checking module is used for comparing whether the acquired PIN code plaintext data is consistent with the pre-stored PIN code.
Preferably, the pad card PIN code line protection module judges whether the generated random number is valid;
and the pad pasting card PIN code line protection module judges whether the random number obtained by decryption is consistent with the random number generated by the random number.
Preferably, after the keyboard initialization module initializes the keyboard, the keyboard initialization module informs the terminal application program to display the keyboard and input a PIN code to the user.
Preferably, the terminal password keyboard module calls the keyboard PIN code line protection module, the keyboard initialization module, the keyboard input receiving module and the keyboard PIN code encryption module;
the pad pasting card password keyboard module calls the pad pasting card PIN code line protection module, the pad pasting card PIN code receiving module, the pad pasting card PIN code decryption module and the pad pasting card PIN code verification module.
The PIN code protection method based on the terminal password keyboard system comprises the following steps:
the terminal password keyboard module receives a PIN code input and verification request;
the terminal password keyboard module calls a keyboard PIN code line protection module and requests a line protection public key and a random number from the pad pasting card password keyboard module;
the film card password keyboard module calls a film card PIN code line protection module to check whether a line protection public and private key pair is generated or not, if not, a random number with a preset byte length is generated;
the pad pasting card password keyboard module responds to the line protection public key and the random number and sends the line protection public key and the random number to the terminal password keyboard module;
the terminal password keyboard module calls a keyboard initialization module to initialize a keyboard, generates a random disordered keyboard number and character mapping table and informs a terminal application program to display the keyboard and input a PIN code for a user;
the method comprises the steps that a user inputs a PIN code, a terminal application program receives an input event of the user and feeds the input event back to a keyboard input receiving module, and the keyboard input receiving module carries out mapping according to a mapping table to obtain the PIN code input by the user;
the terminal password keyboard module calls a keyboard PIN encryption module, and the circuit protection public key is used for encrypting PIN plaintext data and random number to obtain PIN ciphertext data;
the terminal password keyboard module sends PIN code ciphertext data to the pad pasting card password keyboard module;
the pad pasting card password keyboard module calls a pad pasting card PIN code receiving module to receive PIN code ciphertext data, calls a pad pasting card PIN code decryption module after receiving, and decrypts the PIN code ciphertext data by using a private key of a line protection public and private key pair to obtain PIN code plaintext data and random number;
the pad pasting card password keyboard module calls a pad pasting card PIN code line protection module to judge whether the generated random number is valid, if so, the next step is continued, and if not, the state code of the random number invalid is set and then the last step is executed;
the pad card PIN code line protection module compares whether the random number obtained by decryption is consistent with the random number generated by the pad card PIN code line protection module, if so, the next step is continued, and if not, the last step is executed after a state code with the wrong random number is set;
the pad pasting card password keyboard module calls a pad pasting card PIN code check module to compare whether the decrypted PIN code plaintext data is consistent with the stored PIN code, if so, other operations are continuously executed, a state code with successful operation is set, and if not, a state code with wrong PIN code is set; setting the number of times that the PIN code can be tried to be reduced by 1, and setting the card state of the film card to be locked when the number of times that the PIN code can be tried is 0;
and the film card PIN code line protection module sets the state of the random number to be invalid, and simultaneously returns a corresponding state code to the terminal application program by the film card application program, and the PIN code processing is finished.
The invention has the beneficial effects that: according to the invention, by designing the terminal password keyboard module running in the terminal application program and the pad card password keyboard module running in the pad card application program respectively, the risk that the true PIN code of the user is guessed and the message is possibly captured by a third party through monitoring the electrical characteristics on the contact connection line by monitoring the interface coordinate position when the user clicks because the third party programs such as the Trojan horse program and the like are guessed is effectively avoided, and the possibility that the PIN code of the user is cracked is greatly reduced.
Drawings
FIG. 1 is a block diagram of a terminal cryptographic keyboard system based on filmcard hardware of the present invention;
fig. 2 is a flow chart of the PIN code protection method based on the terminal password keyboard system of the present invention.
Detailed Description
The invention will be further explained with reference to the drawings.
Referring to fig. 1, the terminal password keyboard system based on the filmcard hardware of the present invention includes: the terminal password keyboard module is loaded in the terminal application program, and the pad pasting card password keyboard module is loaded in the pad pasting card application program and mutually exchanges information with the terminal password keyboard module through the bottom layer communication module.
Wherein, terminal password keyboard module includes: the keyboard PIN code line protection module 11, the keyboard initialization module 12, the keyboard input receiving module 13 and the keyboard PIN code encryption module 14. Pad pasting card keyboard module includes: the system comprises a pad pasting card PIN code line protection module 21, a pad pasting card PIN code receiving module 22, a pad pasting card PIN code decryption module 23 and a pad pasting card PIN code verification module 24.
After the terminal password keyboard module receives the request for PIN code input and verification, the keyboard PIN code line protection module 11 is used for requesting a line protection public key and a random number from the pad pasting card password keyboard module. The keyboard initialization module 12 is used for initializing a keyboard, generating a random scrambled keyboard number and character mapping table, and informing a terminal application program to display the keyboard and input a PIN code for a user. The keyboard input receiving module 13 receives the input event of the user and obtains the PIN code input by the user according to the character mapping table. The key pad PIN code encryption module 14 encrypts the PIN code plaintext data and the random number input by the user by using the line protection public key to obtain PIN code ciphertext data.
The film card PIN code line protection module 21 is used for generating a line protection public and private key pair and a random number. And the device is also used for judging whether the generated random number is valid or not and judging whether the random number obtained by decryption is consistent with the generated random number or not. The pad pasting card PIN code receiving module 22 is used for receiving PIN code ciphertext data. And the film card PIN code decryption module 23 decrypts the PIN code ciphertext data according to the middle private key and the private key of the line protection public and private key pair to obtain PIN code plaintext data and random number. The pad pasting card PIN code checking module 24 is used for comparing whether the obtained PIN code plaintext data is consistent with the pre-stored PIN code.
Referring to fig. 2, the PIN code protection method based on the terminal password keyboard system of the present invention includes the following steps:
s1, the terminal password keyboard module receives a PIN code input and verification request;
s2, the terminal password keyboard module calls the keyboard PIN code line protection module 11 to request the line protection public key + random number from the pad pasting card password keyboard module;
s3, the pad card password keyboard module calls the pad card PIN code line protection module 21 to check whether a line protection public and private key pair is generated, if not, a random number with a preset byte length is generated;
s4, the pad pasting card password keyboard module responds to the line protection public key + random number to the terminal password keyboard module;
s5, the terminal password keyboard module calls the keyboard initialization module 12 to initialize the keyboard, generates a random disordered keyboard number and character mapping table, and informs the terminal application program to display the keyboard and input PIN codes for the user;
s6, the user inputs the PIN code, the terminal application program receives the input event of the user and feeds the input event back to the keyboard input receiving module 13, and the keyboard input receiving module 13 carries out mapping according to the mapping table to obtain the PIN code input by the user;
s7, the terminal password keyboard module calls the keyboard PIN code encryption module 14, and the circuit protection public key is used for encrypting PIN code plaintext data and random number to obtain PIN code ciphertext data;
s8, the terminal password keyboard module sends the PIN code ciphertext data to the pad pasting card password keyboard module;
s9, the pad pasting card password keyboard module calls the pad pasting card PIN code receiving module 22 to receive PIN code ciphertext data, after receiving, calls the pad pasting card PIN code decryption module 23, decrypts the PIN code ciphertext data by using a private key of a line protection public and private key pair, and obtains PIN code plaintext data and random number;
s10, the pad pasting card password keyboard module calls the pad pasting card PIN code line protection module 21 to judge whether the generated random number is valid, if so, the next step is continued, if not, the last step is executed after the state code of the random number is set;
s11, the circuit protection module 21 compares whether the random number obtained by decryption is consistent with the random number generated by the circuit protection module, if so, the next step is continued, and if not, the last step is executed after the wrong state code of the random number is set;
s12, the pad pasting card password keyboard module calls the pad pasting card PIN code checking module 24 to compare whether the decrypted PIN code plaintext data is consistent with the stored PIN code, if so, other operations (such as signature operations) are continuously executed, and a state code with successful operation is set, and if not, a wrong state code of the PIN code is set; meanwhile, the number of times that the PIN code can be tried is reduced by 1, when the number of times that the PIN code can be tried is 0, the film card sets the card state to be locked, and when the card state is locked, the input and verification of any PIN are not received any more, so that the condition that the film card is picked up by a third party after being lost is avoided, various possibilities of trying the PIN code input for an unlimited time can be avoided, and the PIN code of a user in the film card can be cracked.
And S13, the film card PIN code line protection module sets the random number state as invalid to avoid replay attack, and meanwhile, the film card application program returns the corresponding state code to the terminal application program, and PIN code processing is finished. The PIN code on the film-attached card generally refers to various passwords called by law, such as some signing passwords, some transaction passwords, some user PIN codes and the like, which may be used by the application on the film-attached card.
The above embodiments are provided only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and therefore all equivalent technical solutions should also fall within the scope of the present invention, and should be defined by the claims.
Claims (5)
1. A terminal password keyboard system based on a film card hardware is characterized by comprising:
a terminal password keyboard module loaded in a terminal application program;
the pad pasting card password keyboard module is loaded in the pad pasting card application program and mutually exchanges information with the terminal password keyboard module through the bottom layer communication module;
wherein, the terminal password keyboard module includes:
the keyboard PIN code line protection module is used for requesting a line protection public key and a random number to the pad card password keyboard module after the terminal password keyboard module receives a PIN code input and verification request;
the keyboard initialization module is used for initializing a keyboard and generating a random disordered keyboard number and character mapping table;
the keyboard input receiving module receives an input event of a user and obtains a PIN code input by the user according to the character mapping table; and
the keyboard PIN code encryption module is used for encrypting PIN code plaintext data and random number input by a user by using a line protection public key to obtain PIN code ciphertext data;
pad pasting card password keyboard module includes:
the circuit protection module is used for generating a film-coated card PIN code circuit protection module for protecting a public and private key pair and a random number;
the pad pasting card PIN code receiving module is used for receiving PIN code ciphertext data;
the film card PIN code decryption module decrypts the PIN code ciphertext data according to the middle private key of the line protection public and private key pair to obtain PIN code plaintext data and random number; and
and the pad pasting card PIN code checking module is used for comparing whether the acquired PIN code plaintext data is consistent with the pre-stored PIN code.
2. The terminal password keyboard system based on the filmed card hardware as claimed in claim 1, wherein the filmed card PIN code line protection module determines whether the generated random number is valid;
and the pad pasting card PIN code line protection module judges whether the random number obtained by decryption is consistent with the random number generated by the random number.
3. The sticker card hardware-based terminal password keyboard system of claim 1, wherein after the keyboard initialization module initializes the keyboard, the keyboard initialization module informs the terminal application program to display the keyboard for the user to input a PIN code.
4. The terminal password keyboard system based on the film card hardware as claimed in claim 1, wherein the terminal password keyboard module calls the keyboard PIN code line protection module, the keyboard initialization module, the keyboard input receiving module and the keyboard PIN code encryption module;
the pad pasting card password keyboard module calls the pad pasting card PIN code line protection module, the pad pasting card PIN code receiving module, the pad pasting card PIN code decryption module and the pad pasting card PIN code verification module.
5. A PIN code protection method based on the terminal password keyboard system of claim 1, comprising:
the terminal password keyboard module receives a PIN code input and verification request;
the terminal password keyboard module calls a keyboard PIN code line protection module and requests a line protection public key and a random number from the pad pasting card password keyboard module;
the film card password keyboard module calls a film card PIN code line protection module to check whether a line protection public and private key pair is generated or not, if not, a random number with a preset byte length is generated;
the pad pasting card password keyboard module responds to the line protection public key and the random number and sends the line protection public key and the random number to the terminal password keyboard module;
the terminal password keyboard module calls a keyboard initialization module to initialize a keyboard, generates a random disordered keyboard number and character mapping table and informs a terminal application program to display the keyboard and input a PIN code for a user;
the method comprises the steps that a user inputs a PIN code, a terminal application program receives an input event of the user and feeds the input event back to a keyboard input receiving module, and the keyboard input receiving module carries out mapping according to a mapping table to obtain the PIN code input by the user;
the terminal password keyboard module calls a keyboard PIN encryption module, and the circuit protection public key is used for encrypting PIN plaintext data and random number to obtain PIN ciphertext data;
the terminal password keyboard module sends PIN code ciphertext data to the pad pasting card password keyboard module;
the pad pasting card password keyboard module calls a pad pasting card PIN code receiving module to receive PIN code ciphertext data, calls a pad pasting card PIN code decryption module after receiving, and decrypts the PIN code ciphertext data by using a private key of a line protection public and private key pair to obtain PIN code plaintext data and random number;
the pad pasting card password keyboard module calls a pad pasting card PIN code line protection module to judge whether the generated random number is valid, if so, the next step is continued, and if not, the state code of the random number invalid is set and then the last step is executed;
the pad card PIN code line protection module compares whether the random number obtained by decryption is consistent with the random number generated by the pad card PIN code line protection module, if so, the next step is continued, and if not, the last step is executed after a state code with the wrong random number is set;
the pad pasting card password keyboard module calls a pad pasting card PIN code check module to compare whether the decrypted PIN code plaintext data is consistent with the stored PIN code, if so, other operations are continuously executed, a state code with successful operation is set, and if not, a state code with wrong PIN code is set; setting the number of times that the PIN code can be tried to be reduced by 1, and setting the card state of the film card to be locked when the number of times that the PIN code can be tried is 0;
and the film card PIN code line protection module sets the state of the random number to be invalid, and simultaneously returns a corresponding state code to the terminal application program by the film card application program, and the PIN code processing is finished.
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| CN202010788424.4A CN111914312B (en) | 2020-08-07 | 2020-08-07 | Terminal password keyboard system based on film card hardware and PIN code protection method |
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| CN202010788424.4A CN111914312B (en) | 2020-08-07 | 2020-08-07 | Terminal password keyboard system based on film card hardware and PIN code protection method |
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| CN111914312B (en) | 2024-02-13 |
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