CN113157250A - True random number generation method based on power supply - Google Patents
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Abstract
A power-based true random number generation method adopts an upper computer, a microcontroller and a power module as random number generation tools, wherein the upper computer is internally provided with an instruction unit, a formatting unit and a data receiving and transmitting unit, and the microcontroller is internally provided with a data processing unit and a data transmission unit; setting an input pin of the microcontroller to an input mode and connecting with a power supply S1; s2, sending the number N of the random numbers to be collected by the operator to the microcontroller; s3, the microcontroller calls an internal analog-to-digital conversion module to acquire the voltage value of the power input pin and record time; s4, the data processing unit sends the recording time and the difference value; and S5, formatting the difference to obtain random numbers meeting the requirements, and sending the random numbers to required equipment to complete the generation and collection of the random numbers. The invention simplifies the hardware structure, reduces the cost, obtains the true random number by collecting the power supply change value as the random number by the microcontroller, and has larger practical application value.
Description
Technical Field
The invention relates to the technical field of information security, in particular to a true random number generation method based on a power supply.
Background
In the prior art, random numbers generated by a random generator are widely used in various fields. For example, the lottery industry, generates winning numbers by means of random numbers; in addition, the random number has many applications in information security and password products, such as generating dynamic passwords and dynamic certificate signatures, and the like, thereby greatly ensuring information security and the like.
At present, there are three main methods for generating random numbers, namely manual method, mathematical method and physical method. Wherein, the manual method is the method for generating true random at the earliest, and usually the method of shaking dice and drawing lots is adopted to determine the random number; however, as the application scale is enlarged, the random number generation scale is also enlarged, so people manually make a random number table to obtain random numbers, the table contains thousands of pre-generated true random numbers, and the method can obtain random numbers, but has low efficiency, so the application is limited. The second method is mathematical, which is also the most widely used method at present, and in the application, a certain distribution of random numbers are generated on a computer by a mathematical method, and the generated random numbers are generated according to a known algorithm and are not true random numbers, so the random numbers generated in the way are called pseudo-random numbers, and the pseudo-random numbers have the defects of periodicity and predictability, are difficult to ensure the safety of information encryption, and have limitations in application. The third method is a physical method, i.e. a computer is connected with a physical device, and the physical process is converted into a random number, for example, the random number is generated by the change of chaotic laser, but the method has high technical requirements on operators, and has high cost and no popularization value. In summary, it is necessary to provide a method for generating true random numbers based on a physical method with low technical requirements and low cost.
Disclosure of Invention
In order to overcome the defects that the safety of information encryption is difficult to ensure, the technical requirements on operators are high, the cost is high, the popularization value is not high, and the application is limited in the three methods for generating the random number, the invention provides hardware for generating the random number by using a microcontroller and an upper computer, and the method has the advantages of low cost, convenience in use and low requirements on the operators.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a power-based true random number generation method is characterized in that an upper computer, a microcontroller and a power module are adopted as random number generation tools, the upper computer is internally provided with an instruction unit, a formatting unit and a data receiving and transmitting unit, and the microcontroller is internally provided with a data processing unit and a data transmission unit; the command unit, the formatting unit and the data receiving and transmitting unit are application software installed in an upper computer, and the data processing unit and the data transmission unit are application software installed in a microcontroller; the method for generating the true random number based on the power supply comprises the following steps that S1, an operator sets an input pin of the microcontroller into an input mode and is connected with the power supply, and the signal output end of an analog-to-digital conversion module of the microcontroller is connected with the signal input end of an upper computer through a data line; s2, when an operator needs to generate a true random number, the instruction unit sends a random number generation instruction, and the instruction unit of the upper computer sends the number N of the random numbers which the operator needs to collect to the data processing unit of the microcontroller; s3, when the data processing unit of the microcontroller receives the data of the number N of the random numbers sent by the upper computer, the microcontroller calls the internal self analog-to-digital conversion module to firstly collect the power input pin P for one timeinputVoltage value of (1), noted as V0Then at fixed time intervals TsPost-acquisition input pin PinputThe voltage values, in turn denoted V1,V2,L,VNThe data processing unit calculates the difference value of the collected voltage every two times as ri＝Vi-Vi-11,2, N, recording the current time as Ti1,2, N; s4 the data processing unit records the time Ti1,2, N and the difference riThe N is sent to an upper computer data receiving and sending unit through a data transmission unit to be received and then processed in the next step; s5, the operator receives the difference r from the upper computeriN is formatted by a formatting unit according to its own needs to obtain a random number R meeting the requirementsiAnd the data receiving and transmitting unit sends the random number to required equipment to complete the generation and collection of the random number.
Further, in S1, P of the microcontrollerinputPinIs a data input pin.
Further, the microcontroller is a single chip microcomputer module of a model STM32F103C8T 6.
Further, in said S3, V0Is the voltage value collected; t issIs the acquisition time interval; n is the voltage value acquired for N times; r isiIs the difference between adjacent collected voltages; t isiIs riThe calculated system time.
Further, in the S4, TiIs riA calculated system time; r isiIs the difference between adjacent acquisition voltages.
Further, in the S5, riIs the difference between adjacent collected voltages; riIs riAnd (5) processing the data.
The invention has the beneficial effects that: in the invention, the microcontroller, the power module and the upper computer are combined by utilizing the characteristic of thermal noise generated by power generation and ADC (analog-to-digital conversion) technology, so that the hardware structure is greatly improved and simplified, the cost is reduced, in the application, the characteristic that the power voltage is changed by utilizing the thermal noise generated by the power when the power is electrified is used as a basis under the combined action of the upper computer, the microcontroller, the power module and related software units, the microcontroller acquires the power change value as a random number through the analog-to-digital conversion module, and further the true random number is obtained, so that the improvement of the production efficiency is realized, the method has a large practical application value, and can be widely applied to the fields of data encryption, secret communication and the like. Based on the above, the invention has good application prospect.
Drawings
FIG. 1 is a block diagram of the hardware architecture of the present invention.
Fig. 2 is a block diagram of the inventive workflow.
Detailed Description
As shown in fig. 1 and 2, a power supply-based true random number generation method adopts an upper computer, a microcontroller (a single chip microcomputer module of model STM32F103C8T 6) and a direct current power supply module as tools for generating random numbers, wherein the upper computer is internally provided with an instruction unit, a formatting unit and a data transceiver unit, and the microcontroller is internally provided with a data processing unit and a data transmission unit; the instruction unit, the formatting unit and the data receiving and transmitting unit are application software installed in an upper computer, and the data processing unit and the data transmission unit are application software installed in a microcontroller.
Referring to fig. 1 and 2, the method for generating a power-based true random number according to the present invention includes steps of setting a pin of a microcontroller to an input mode and connecting the pin to a positive electrode of a power supply, and outputting a signal output terminal of an analog-to-digital conversion module of the microcontroller (the analog-to-digital conversion module of the microcontroller mainly functions to collect a pin P when necessary) S1inputThe analog voltage signal is converted into a digital signal) and the signal input end of the upper computer are connected through a data line (the microcontroller supplies power through a power module); s2, when an operator needs to generate a true random number, the instruction unit sends a random number generation instruction, and the instruction unit of the upper computer sends the number N of the random numbers which the operator needs to collect to the data processing unit of the microcontroller; s3, when the data processing unit of the microcontroller receives the data of the number N of the random numbers sent by the upper computer, the microcontroller calls an internal analog-to-digital conversion module (ADC) to collect the pin P of the primary power input firstlyinput(i.e., data input pin) voltage value, denoted as V0(value of collected voltage) and then every fixed time Ts(acquisition time interval) post-acquisition input pin PinputThe voltage values, in turn denoted V1,V2,L,VN(voltage values acquired for N times), the data processing unit calculates the difference value of the acquired voltage for every two times as ri＝Vi-Vi-1i＝1,2,...,N(riDifference of adjacent collected voltages), recording the current time as Ti i＝1,2,...,N(TiIs riCalculated system time); s4 the data processing unit records the time Ti i＝1,2,...,N(TiIs riCalculated system time) and the difference rii＝1,2,...,N(riThe difference value of adjacent collected voltages) is transmitted to an upper computer data transceiver unit through a data transmission unit and then is received by the upper computer data transceiver unit to be processed in the next step; s5, the operator receives the difference r by the upper computeri i＝1,2,...,N(riDifference of adjacent collected voltages) rootThe random number R meeting the requirement is obtained by formatting processing through a formatting unit according to the self requirementii＝1,2,...,N(RiIs riProcessed data), and the data transceiver unit sends the random number to the required equipment to complete the generation and collection of the random number.
As shown in fig. 1 and 2, the invention is based on the principle of uncertainty of heisenberg, and mainly utilizes the principle that thermal noise generated when a power supply is electrified is disordered movement of atoms and cannot predict the value of the next moment, so that data obtained by collecting the thermal noise is true random numbers. In the invention, the microcontroller, the power module and the upper computer are combined by utilizing the characteristic of thermal noise generated by power generation and ADC (analog-to-digital conversion) technology, so that the hardware structure is greatly improved and simplified, the cost is reduced, in the application, the characteristic that the power voltage is changed by utilizing the thermal noise generated by the power when the power is electrified is used as a basis under the combined action of the upper computer, the microcontroller, the power module and related software units, the microcontroller acquires the power change value as a random number through the analog-to-digital conversion module, and further the true random number is obtained, so that the improvement of the production efficiency is realized, the method has a large practical application value, and can be widely applied to the fields of data encryption, secret communication and the like. The method overcomes the defects that the safety of information encryption is difficult to ensure, the technical requirements on operators are high, the cost is high, the popularization value is not high, and the application is limited in the prior art.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, the embodiments do not include only one independent technical solution, and such description is only for clarity, and those skilled in the art should take the description as a whole, and the technical solutions in the embodiments may be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims (6)
1. A power-based true random number generation method is characterized in that an upper computer, a microcontroller and a power module are adopted as random number generation tools, the upper computer is internally provided with an instruction unit, a formatting unit and a data receiving and transmitting unit, and the microcontroller is internally provided with a data processing unit and a data transmission unit; the command unit, the formatting unit and the data receiving and transmitting unit are application software installed in an upper computer, and the data processing unit and the data transmission unit are application software installed in a microcontroller; the method for generating the true random number based on the power supply comprises the following steps that S1, an operator sets an input pin of the microcontroller into an input mode and is connected with the power supply, and the signal output end of an analog-to-digital conversion module of the microcontroller is connected with the signal input end of an upper computer through a data line; s2, when an operator needs to generate a true random number, the instruction unit sends a random number generation instruction, and the instruction unit of the upper computer sends the number N of the random numbers which the operator needs to collect to the data processing unit of the microcontroller; s3, when the data processing unit of the microcontroller receives the data of the number N of the random numbers sent by the upper computer, the microcontroller calls the internal self analog-to-digital conversion module to firstly collect the power input pin P for one timeinputVoltage value of (1), noted as V0Then at fixed time intervals TsPost-acquisition input pin PinputThe voltage values, in turn denoted V1,V2,L,VNThe data processing unit calculates the difference value of the collected voltage every two times as ri＝Vi-Vi-11,2, N, recording the current time as Ti1,2, N; s4 the data processing unit records the time Ti1,2, N and the difference riAfter the data transmission unit sends the data to the upper computer data transceiver unit for receiving, the data transmission unit transmits the data to the upper computer 1,2Carrying out next step processing; s5, the operator receives the difference r from the upper computeriN is formatted by a formatting unit according to its own needs to obtain a random number R meeting the requirementsiAnd the data receiving and transmitting unit sends the random number to required equipment to complete the generation and collection of the random number.
2. The power-based true random number generating method of claim 1, wherein in S1, P of the microcontrollerinputThe pin is a data input pin.
3. The power-based true random number generation method of claim 1, wherein the microcontroller is a single chip module of model number STM32F103C8T 6.
4. The power-based true random number generation method of claim 1, wherein in S3, V0Is the voltage value collected; t issIs the acquisition time interval; n is the voltage value acquired for N times; r isiIs the difference between adjacent collected voltages; t isiIs riThe calculated system time.
5. The power-based true random number generation method of claim 1, wherein in S4, T isiIs riA calculated system time; r isiIs the difference between adjacent acquisition voltages.
6. The power-based true random number generation method of claim 1, wherein in S5, r isiIs the difference between adjacent collected voltages; riIs riAnd (5) processing the data.
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