CN111540102B - Dynamic password circuit, access control system and access control method - Google Patents
Dynamic password circuit, access control system and access control method Download PDFInfo
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- CN111540102B CN111540102B CN202010363758.7A CN202010363758A CN111540102B CN 111540102 B CN111540102 B CN 111540102B CN 202010363758 A CN202010363758 A CN 202010363758A CN 111540102 B CN111540102 B CN 111540102B
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/30—Individual registration on entry or exit not involving the use of a pass
- G07C9/32—Individual registration on entry or exit not involving the use of a pass in combination with an identity check
- G07C9/33—Individual registration on entry or exit not involving the use of a pass in combination with an identity check by means of a password
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Abstract
The application discloses dynamic password circuit, access control system and access control method includes: the device comprises a first phase-locked loop circuit, a second phase-locked loop circuit and six groups of cipher circuits; the first phase-locked loop circuit is used for generating clock signals with three different frequencies and respectively driving the first three groups of password circuits to generate the first three-bit password; the second phase-locked loop circuit is used for generating other three clock signals with different frequencies and respectively driving the last three groups of cipher circuits to generate a last three-bit cipher; each set of cryptographic circuits consists of a four-bit linear feedback shift register that generates a random number in units. The application provides a dynamic password circuit, through two phase-locked loop circuit produce the clock signal of six kinds of different frequency, drive six password circuit groups, six dynamic passwords of random generation have solved current access control system by password control and have easily revealed the relatively poor technical problem of security that leads to because of taking place the password.
Description
Technical Field
The application relates to the technical field of password control, in particular to a dynamic password circuit, an access control system and an access control method.
Background
The existing access control system controlled by a password identifies whether the access authority exists or not by verifying whether the input password is correct or not, if the password input by a user on a password input device of the access control system is correct, the access control system unlocks the user to let the user pass, and if the input password is incorrect, the access control system does not carry out unlocking action. However, in the unlocking control mode of the access control system with fixed password verification, the password is easy to leak, and the security is poor, so that the existing access control system with password control needs to be improved, and the safety and reliability of the access control system are improved.
Disclosure of Invention
The application provides a dynamic password circuit, an access control system and an access control method, which are used for solving the technical problem that the existing access control system controlled by passwords is poor in safety because the passwords are leaked easily.
In view of the above, a first aspect of the present application provides a dynamic cryptographic circuit, including: the device comprises a first phase-locked loop circuit, a second phase-locked loop circuit and six groups of cipher circuits;
the first phase-locked loop circuit is used for generating clock signals with three different frequencies and respectively driving the first three groups of password circuits to generate the first three-bit password;
the second phase-locked loop circuit is used for generating other three clock signals with different frequencies and respectively driving the last three groups of cipher circuits to generate a last three-bit cipher;
each set of cryptographic circuits consists of a four-bit linear feedback shift register that generates a random number in units.
Optionally, the four-bit linear feedback shift register comprises: a D1 flip-flop, an and gate, an inverter, a D2 flip-flop, a D3 flip-flop, a D4 flip-flop, a first exclusive or gate, a second exclusive or gate, and an nor gate;
the D1 flip-flop, the inverter, the D2 flip-flop, the D3 flip-flop, and the D4 flip-flop are connected in series;
clock terminals of the D1 flip-flop, the D2 flip-flop, the D3 flip-flop, and the D4 flip-flop are connected with a clock terminal of the corresponding first phase-locked loop circuit or the second phase-locked loop circuit;
the output ends of the D1 flip-flop, the D2 flip-flop and the D3 flip-flop are connected with the input end of the NOR gate;
the output end of the D1 trigger is connected with the input end of the inverter and the first input end of the AND gate;
the output end of the D3 flip-flop is connected with the input end of the D4 flip-flop and the second input end of the AND gate;
the output end of the NOR gate is connected with the first input end of the first exclusive-OR gate;
a second input end of the first exclusive-or gate is connected with an output end of the D4 trigger;
the output end of the first exclusive-or gate is connected with the second input end of the second exclusive-or gate;
a first input end of the second exclusive-or gate is connected with an output end of the D2 trigger;
the output end of the second exclusive-or gate is connected with the input end of the D1 trigger.
A second aspect of the present application provides an access control system, which includes a timer circuit, the dynamic password circuit of any one of the first aspects, an EPCS storage module, a keyboard password input module, a communication circuit, and an electric lock execution module;
the timer circuit is connected with the dynamic password circuit and is used for periodically driving the dynamic password circuit to generate a dynamic password;
the EPCS storage module is connected with the dynamic password circuit and the keyboard password input module and is used for storing the dynamic password and comparing the password input by the keyboard password input module with the dynamic password;
the communication circuit is connected with the dynamic password circuit and is used for sending the dynamic password to a user terminal;
the electric lock execution module is connected with the EPCS storage module and used for opening the access control lock when the password input by the keyboard password input module is consistent with the dynamic password.
Optionally, the method further comprises: a display module;
the display module is connected with the keyboard input module and the EPCS storage module and is used for displaying the password input in the keyboard input module and displaying password error information when the password input by the keyboard password input module is inconsistent with the dynamic password.
Optionally, the method further comprises: a voice processing module;
the voice processing module is connected with the EPCS storage module and used for prompting password error information in a voice mode when the password input by the keyboard password input module is inconsistent with the dynamic password.
Optionally, the method further comprises: an image acquisition module;
the image acquisition module is connected with the EPCS storage module and used for acquiring image information of a person who inputs a password at the keyboard input module and sending the image information to the EPCS storage module, so that the EPCS storage module marks and stores the image information.
Optionally, the communication circuit is a 5G signal communication circuit.
A third aspect of the present application provides an access control method, which is executed in the access control system of any of the second aspects, and includes:
acquiring a dynamic password generated by a timer circuit periodically driving a password circuit, storing the dynamic password in an EPCS storage module, and sending the dynamic password to a user terminal through a communication circuit;
acquiring an authentication password input by a user at a keyboard password input module;
and comparing the verification password with the dynamic password in the EPCS storage module, and controlling an electric lock execution module to open a door lock if the verification password is consistent with the dynamic password.
Optionally, the method further comprises:
and acquiring the image information of the user who inputs the verification password through an image acquisition module, and sending the image information to the EPCS storage module, so that the EPCS storage module marks and stores the image information.
Optionally, the method further comprises:
and displaying the verification password through a display module, and displaying password error information when the verification password is inconsistent with the dynamic password.
According to the technical scheme, the embodiment of the application has the following advantages:
the present application provides a dynamic cryptographic circuit, comprising: the device comprises a first phase-locked loop circuit, a second phase-locked loop circuit and six groups of cipher circuits; the first phase-locked loop circuit is used for generating clock signals with three different frequencies and respectively driving the first three groups of password circuits to generate the first three-bit password; the second phase-locked loop circuit is used for generating other three clock signals with different frequencies and respectively driving the last three groups of cipher circuits to generate a last three-bit cipher; each set of cryptographic circuits consists of a four-bit linear feedback shift register that generates a random number in units. The application provides a dynamic password circuit, through two phase-locked loop circuit produce the clock signal of six kinds of different frequency, drive six password circuit groups, six dynamic passwords of random generation have avoided current artifical fixed password mode of setting for to take place the defect that the password reveals easily, have solved current access control system by password control and have easily revealed the relatively poor technical problem of security because of taking place the password.
Drawings
Fig. 1 is a schematic circuit diagram of a dynamic cryptographic circuit provided in an embodiment of the present application;
fig. 2 is a schematic circuit diagram of a four-bit linear feedback shift register provided in an embodiment of the present application;
fig. 3 is a schematic structural diagram of an access control system provided in an embodiment of the present application;
fig. 4 is a schematic flowchart of an access control method provided in an embodiment of the present application.
Detailed Description
In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
To facilitate understanding, referring to fig. 1, the present application provides one embodiment of a dynamic cryptographic circuit, comprising: the device comprises a first phase-locked loop circuit, a second phase-locked loop circuit and six groups of cipher circuits;
the first phase-locked loop circuit is used for generating clock signals with three different frequencies and respectively driving the first three groups of password circuits to generate the first three-bit password;
the second phase-locked loop circuit is used for generating other three clock signals with different frequencies and respectively driving the last three groups of cipher circuits to generate a last three-bit cipher;
each set of cryptographic circuits consists of a four-bit linear feedback shift register that generates a random number in units.
It should be noted that, as shown in fig. 1, the dynamic cipher circuit in the embodiment of the present application includes two phase-locked loop circuits and six sets of cipher circuits, each set of cipher circuit is composed of a four-bit linear feedback shift register, the first phase-locked loop circuit generates three clock signals of clk1, clk2, and clk3 with different frequencies to respectively drive the cipher circuit 1, the cipher circuit 2, and the cipher circuit 3 to generate random single-bit ciphers, the second phase-locked loop circuit generates three clock signals of clk4, clk5, and clk6 with different frequencies to respectively drive the cipher circuit 4, the cipher circuit 5, and the cipher circuit 6 to generate random single-bit ciphers, and the frequencies of the driving clock signals of the six sets of cipher circuits are different, so that the randomness of the six-bit ciphers can be well ensured.
The dynamic password circuit provided in the embodiment of the application generates six clock signals with different frequencies through two phase-locked loop circuits, drives six groups of password circuits, randomly generates six dynamic passwords, avoids the defect that the password leakage easily occurs in the existing manual setting fixed password mode, and solves the technical problem that the security of the existing access control system controlled by the password is poor due to the password leakage.
Further, as shown in fig. 2, the four-bit linear feedback shift register in the embodiment of the present application includes:
a D1 flip-flop, an and gate, an inverter, a D2 flip-flop, a D3 flip-flop, a D4 flip-flop, a first exclusive or gate, a second exclusive or gate, and an nor gate;
the D1 flip-flop, the inverter, the D2 flip-flop, the D3 flip-flop and the D4 flip-flop are connected in sequence;
clock ends of the D1 flip-flop, the D2 flip-flop, the D3 flip-flop and the D4 flip-flop are connected with a clock end of the corresponding first phase-locked loop circuit or the second phase-locked loop circuit;
the output ends of the D1 flip-flop, the D2 flip-flop and the D3 flip-flop are connected with the input end of the NOR gate;
the output end of the D1 trigger is connected with the input end of the inverter and the first input end of the AND gate;
the output end of the D3 flip-flop is connected with the input end of the D4 flip-flop and the second input end of the AND gate;
the output end of the NOR gate is connected with the first input end of the first exclusive-OR gate;
the second input end of the first exclusive-or gate is connected with the output end of the D4 trigger;
the output end of the first exclusive-OR gate is connected with the second input end of the second exclusive-OR gate;
a first input end of the second exclusive-or gate is connected with an output end of the D2 trigger;
the output end of the second exclusive-or gate is connected with the input end of the D1 trigger.
It should be noted that, in the circuit structure of the four-bit linear feedback shift register in the embodiment of the present application, as shown in fig. 2, when the enable terminal ena is at a high level, signals are output from the terminals Q1, Q2, Q3, and Q4, and when the enable terminal ena is at a low level, signals are not output from the terminals Q1, Q2, Q3, and Q4. The output of the nor gate is 0 as long as the input end of the nor gate has 1 high level, and the output of the nor gate is 1 when the input ends of the nor gate are all low level. When two input ends of the exclusive-OR gate are different, the output is 1, and when the two input ends are same, the output is 0; when the two input ends of the AND gate are both 1, the output is 1, and the other conditions are 0. The inverter realizes inversion operation under the control of the AND gate, and works to execute inversion when the output of the AND gate is at a high level; when the output of the AND gate is at low level, the inverter does not work and only acts as a transmission line.
In the embodiment of the present application, the process of generating the random number by the four-bit linear feedback shift register may be described as that, at the beginning, the initial value of the four-bit linear feedback shift register is "0000", and the and gate outputs are 0 through the logic gate operation when D1 is equal to "1", so that the inverter does not operate, and only functions as a transmission line. Then in cycle 1, Q1 is equal to '1', and the other bits are shifted back sequentially for the previous bit, resulting in: Q1Q2Q3Q4 ═ 1000; by analogy, in the period 2, Q1Q2Q3Q4 is 0100; in period 3, Q1Q2Q3Q4 is "1010"; meanwhile, since the output of the and gate is 1, the inverter inverts so that D2 becomes '0', and then Q1Q2Q3Q4 becomes '0001' in cycle 4; at cycle 5, the start value is returned to, the next cycle is started, and the shift process is shown in table 1.
TABLE 1
Because the operating clocks of the six groups of cipher circuits are not consistent (clk 1, clk2, clk3, clk4, clk5 and clk6, respectively), the output numbers of each four-bit linear feedback shift register are not synchronized, that is, assuming that when the cipher circuit 1 outputs the number "2", the output numbers of the cipher circuits 2-6 are random numbers "0", "1", "2", "5" and "8", and when ena operates, all the numbers of the six groups of cipher circuits at a certain moment are output as dynamic ciphers for entrance guard, so the six-bit cipher generated by the dynamic cipher generation circuit in the embodiment of the present application is 5-bit cipher6The random dynamic property of the password is well guaranteed through the combination.
To facilitate understanding, referring to fig. 3, the present application provides an embodiment of an access control system comprising: the device comprises a timer circuit, a dynamic password circuit in the dynamic password circuit embodiment, an EPCS storage module, a keyboard password input module, a communication circuit and an electric lock execution module;
the timer circuit is connected with the dynamic password circuit and is used for periodically driving the dynamic password circuit to generate a dynamic password;
the EPCS storage module is connected with the dynamic password circuit and the keyboard password input module and is used for storing the dynamic password and comparing the password input by the keyboard password input module with the dynamic password;
the communication circuit is connected with the dynamic password circuit and used for sending the dynamic password to the user terminal;
the electric lock execution module is connected with the EPCS storage module and is used for opening the access control lock when the password input by the keyboard password input module is consistent with the dynamic password.
It should be noted that, in the embodiment of the present application, the access control system is structurally illustrated in fig. 3, and the timer circuit essentially serves as a counter, which mainly provides a time standard for the access control system and drives the password circuit to generate a dynamic password in a timely manner. The EPCS storage module mainly comprises an EPCS storage chip and is used for storing the dynamic password generated by the dynamic password circuit, and comparing the verification password with the dynamic password when the user inputs the verification password in the keyboard password input module. And the electric lock execution module judges whether the access lock is opened according to the comparison result, and controls the access lock to be opened if the verification password is consistent with the dynamic password. The working principle of the access control system in the embodiment of the application can be described as follows:
the timer circuit drives the dynamic password circuit to generate a dynamic password at regular intervals, the dynamic password circuit sends the dynamic password to the user terminal through the communication circuit, and the communication circuit can be a 5G signal communication circuit and stores the dynamic password in the EPCS storage module;
the user inputs the verification password on the keyboard password input module, and the EPCS storage module compares the verification password with the stored dynamic password (of course, the comparison operation can also be executed by the controller, and the controller acquires the verification password of the keyboard password input module and the dynamic password in the EPCS storage module, and compares the two passwords);
and if the comparison result is that the verification password is inconsistent with the dynamic password, the electric lock execution module does not act.
Further, the access control system in the embodiment of the application may further include a display module and a voice processing module. The display module is connected with the keyboard input module and the EPCS storage module and is used for displaying the password input in the keyboard input module, and displaying password error information when the password input by the keyboard password input module is inconsistent with the dynamic password, such as password error! ". The voice processing module is connected with the EPCS storage module and used for prompting password error information in a voice mode when the password input by the keyboard password input module is inconsistent with the dynamic password.
Further, access control system in this application embodiment can also include: an image acquisition module;
the image acquisition module is connected with the EPCS storage module and used for acquiring the image information of the person who inputs the password at the keyboard input module and sending the image information to the EPCS storage module, so that the EPCS storage module marks and stores the image information.
The image information of the person who inputs the password is collected, and the person can be checked.
For easy understanding, please refer to fig. 4, an embodiment of an access control method is provided in the present application, and the access control method is executed in the embodiment of the access control system, and includes the following steps:
And 102, acquiring an authentication password input by a user in a keyboard password input module.
And 103, comparing the verification password with the dynamic password in the EPCS storage module, and controlling the electric lock execution module to open the door lock if the verification password is consistent with the dynamic password.
Further, when the keyboard password input module has an operation of inputting a verification password, the image acquisition module acquires image information of a user who inputs the verification password, and sends the image information to the EPCS storage module, so that the EPCS storage module marks and stores the image information.
When the keyboard password input module has the operation of inputting the verification password, the display module displays the input verification password and displays password error information when the verification password is inconsistent with the dynamic password.
In the several embodiments provided in the present application, it should be understood that the disclosed system and method may be implemented in other ways. For example, the above-described system embodiments are merely illustrative, and for example, the division of the units is only one logical functional division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer system (which may be a personal computer, a server, or a network system) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (9)
1. A dynamic cryptographic circuit, comprising: the device comprises a first phase-locked loop circuit, a second phase-locked loop circuit and six groups of cipher circuits;
the first phase-locked loop circuit is used for generating clock signals with three different frequencies and respectively driving the first three groups of password circuits to generate the first three-bit password;
the second phase-locked loop circuit is used for generating other three clock signals with different frequencies and respectively driving the last three groups of cipher circuits to generate a last three-bit cipher;
each group of the cryptographic circuits consists of a four-bit linear feedback shift register which generates random numbers with unit numbers;
the four-bit linear feedback shift register includes: a D1 flip-flop, an and gate, an inverter, a D2 flip-flop, a D3 flip-flop, a D4 flip-flop, a first exclusive or gate, a second exclusive or gate, and an nor gate;
the D1 flip-flop, the inverter, the D2 flip-flop, the D3 flip-flop, and the D4 flip-flop are connected in series;
clock terminals of the D1 flip-flop, the D2 flip-flop, the D3 flip-flop and the D4 flip-flop are connected with a clock terminal of the corresponding first phase-locked loop circuit or the second phase-locked loop circuit;
the output ends of the D1 flip-flop, the D2 flip-flop and the D3 flip-flop are connected with the input end of the NOR gate;
the output end of the D1 trigger is connected with the input end of the inverter and the first input end of the AND gate;
the output end of the D3 flip-flop is connected with the input end of the D4 flip-flop and the second input end of the AND gate;
the output end of the NOR gate is connected with the first input end of the first exclusive-OR gate;
a second input end of the first exclusive-or gate is connected with an output end of the D4 trigger;
the output end of the first exclusive-or gate is connected with the second input end of the second exclusive-or gate;
a first input end of the second exclusive-or gate is connected with an output end of the D2 trigger;
the output end of the second exclusive-or gate is connected with the input end of the D1 trigger.
2. An access control system comprising a timer circuit, the dynamic password circuit of claim 1, an EPCS storage module, a keypad password input module, a communication circuit, and an electric lock execution module;
the timer circuit is connected with the dynamic password circuit and is used for periodically driving the dynamic password circuit to generate a dynamic password;
the EPCS storage module is connected with the dynamic password circuit and the keyboard password input module and is used for storing the dynamic password and comparing the password input by the keyboard password input module with the dynamic password;
the communication circuit is connected with the dynamic password circuit and is used for sending the dynamic password to a user terminal;
the electric lock execution module is connected with the EPCS storage module and used for opening the access control lock when the password input by the keyboard password input module is consistent with the dynamic password.
3. The door access system of claim 2, further comprising: a display module;
the display module is connected with the keyboard input module and the EPCS storage module and is used for displaying the password input in the keyboard input module and displaying password error information when the password input by the keyboard password input module is inconsistent with the dynamic password.
4. The door access system of claim 3, further comprising: a voice processing module;
the voice processing module is connected with the EPCS storage module and used for prompting password error information in a voice mode when the password input by the keyboard password input module is inconsistent with the dynamic password.
5. The door access system of claim 2, further comprising: an image acquisition module;
the image acquisition module is connected with the EPCS storage module and used for acquiring image information of a person who inputs a password at the keyboard input module and sending the image information to the EPCS storage module, so that the EPCS storage module marks and stores the image information.
6. The door access control system of claim 2, wherein the communication circuit is a 5G signal communication circuit.
7. An access control method executed in the access control system of any one of claims 2 to 6, comprising:
acquiring a dynamic password generated by a timer circuit periodically driving a password circuit, storing the dynamic password in an EPCS storage module, and sending the dynamic password to a user terminal through a communication circuit;
acquiring an authentication password input by a user at a keyboard password input module;
and comparing the verification password with the dynamic password in the EPCS storage module, and controlling an electric lock execution module to open a door lock if the verification password is consistent with the dynamic password.
8. The door access control method according to claim 7, further comprising:
and acquiring the image information of the user who inputs the verification password through an image acquisition module, and sending the image information to the EPCS storage module, so that the EPCS storage module marks and stores the image information.
9. The door access control method according to claim 7, further comprising:
and displaying the verification password through a display module, and displaying password error information when the verification password is inconsistent with the dynamic password.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101340280A (en) * | 2008-08-22 | 2009-01-07 | 四川虹微技术有限公司 | Stream cipher generator |
| CN103324462A (en) * | 2013-05-24 | 2013-09-25 | 深圳职业技术学院 | True random number generation system |
| CN108510626A (en) * | 2018-02-23 | 2018-09-07 | 深圳同心科技有限公司 | A kind of dynamic password access control management method and its management system |
| CN110413257A (en) * | 2019-07-30 | 2019-11-05 | 北京智芯微电子科技有限公司 | Random number generation circuit |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60134377A (en) * | 1983-12-21 | 1985-07-17 | Omron Tateisi Electronics Co | Password number input device |
| CN1079966C (en) * | 1997-02-05 | 2002-02-27 | 石易 | Random code generator |
| JP4917478B2 (en) * | 2007-05-25 | 2012-04-18 | 株式会社ケーヒン | Random number generator and vehicle control device |
| CN103607275B (en) * | 2013-11-22 | 2016-06-22 | 北京航空航天大学 | A kind of encryption system of safety speed-adaptive change |
| CN108492413A (en) * | 2018-03-15 | 2018-09-04 | 广东西雅斯智能科技有限公司 | Dynamic cipher generating method, password generator and coded lock |
-
2020
- 2020-04-30 CN CN202010363758.7A patent/CN111540102B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101340280A (en) * | 2008-08-22 | 2009-01-07 | 四川虹微技术有限公司 | Stream cipher generator |
| CN103324462A (en) * | 2013-05-24 | 2013-09-25 | 深圳职业技术学院 | True random number generation system |
| CN108510626A (en) * | 2018-02-23 | 2018-09-07 | 深圳同心科技有限公司 | A kind of dynamic password access control management method and its management system |
| CN110413257A (en) * | 2019-07-30 | 2019-11-05 | 北京智芯微电子科技有限公司 | Random number generation circuit |
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