CN101270620A - Remote control device and method adopting true random sequence as unlocking cipher of remote control lock - Google Patents

Abstract

The invention provides a remote control apparatus adopting real-random sequence used as the unlocking code of a remote control lock and a method. The apparatus consists of a remote control key and a remote. The complete randmicity of the real-random sequence and each different real-random sequence used as the one-off unlocking code adopted by the invention realize that the real-random sequence is used as the one-off unlocking code method, so later adopted codes can not be extrapolated by the formerly used codes. The unlocking code is a length of the real-random sequence stored in the sequence storage area. Difference length of the real-random sequence is adopted for unlocking, which is distinguished by the remote control key and the length number of the remote control lock, so even though the formerly used code is intercepted by the means of scanning or others, latterly used code still can not be broken and used. Therefore, the remote control apparatus adopting real-random sequence used as the unlocking code of a remote control lock increases the safety of the remote control lock. In addition, manufactures are not required to handle a secret key, thus preventing the manufactures from bearing legal responsibility and offering convenience for users to make new keys.

Description

Adopt remote control and the method for true random sequence as remote control lock unlocking cipher

Technical field

The invention belongs to electronic information technical field, it is particularly related to the telecontrol engineering of a kind of anti-scanning, the anti-electronic remote-control lock that cracks.

Technical background

Abundant along with the development of modern society, people's material wealth, antitheft problem becomes the social concern of people's common concern, antitheft target more and more widely, as automobile, house, garage, market, office space etc.Want safe antitheft, except the material comparison of door and structure want solid and firm, its goalkeeper army---lock and will prevent that also other people from attacking.Though at present the theftproof lock type is a lot, security performance is still troubling, and quilts such as automobile, the office space incident of being robbed of forcing open the door is appeared in the newspapers repeatly.

Study carefully the not high reason of security performance of its present electronic remote control anti-theft lock, be because there is defective in the cryptographic technique of present electronic lock, the unlocking cipher generating technique of existing electronic lock (comprising remote control and contact) has two classes nothing but, one class is fixed password (generally is used for low-grade remote control lock), and another kind of is by certain fixing rolling password of producing of algorithm.

The technical article of part patent related to the present invention and technology report is summarized as follows in the prior art:

Introduced the unlocking cipher method that a kind of remote control Keeloq rolling algorithm is used for security system in " electronic technology " 1997 the 12nd phases " eeloq rolling code security system and exploitation thereof " literary composition by name.This method is based on the sequence of Keeloq algorithm generation as unlocking cipher, and this kind algorithm has made the rolling code encoder chip HCS300 of this chip of chip Keeloq algorithm by name.This algorithm was divided into for three steps: the first step is that key generates, second step was to encrypt to utilize a kind of AES, and the key that produces with the first step generates a kind of algorithm of uniqueness for each encoder, and the 3rd goes on foot, when encoder uses at every turn again, produce unlocking cipher by second unique algorithm that produces.

In " electronic technology " 1996 the 6th phases " a kind of gate control system of remote-control unlocking " literary composition by name, introduced the security system of the formation of a kind of rolling code encoder chip HCS300 based on the Keeloq algorithm.A typical architecture of this system as shown in Figure 1 and Figure 2.This electronic type gate control system based on the Keeloq rolling code has been compared following characteristics with common mechanical type gate control system or fixed code electronic type gate control system:

(1) because transmitter code is 64 (264 kinds of compositions), so can not crack with " scanning " method;

(2) owing to be the rolling code emission, each sign indicating number that sends all is different, so can not cracked (its signal of fixed code system is very easily cracked after the inflight acquisition) after the aerial picked-up;

(3) key can not be replicated (mechanical type very easily is replicated);

(4) key loss needn't be changed lock (can allow the key of losing cancel, and the key that all the other are not lost being according to using);

But, the remote control lock that these class methods and this class methods are produced, the first step of Keeloq algorithm is to be finished by manufacturer, the key of producing is to be grasped by manufacturer, therefore there is law danger in the manufacturer, in case and user's key loss, then can only be with firsthand information to return manufacturer's preparation, bring inconvenience to the user.

Application number is 97208699.4 Chinese invention patent application, the utility model of a kind of " wireless remote control coded lock " by name is disclosed, it receives controller, electric control lock and power pack by miniature remote controlled key, password forms, and remote-control key is with the unlocking cipher of mode of frequency regulation emission dtmf code storage or that key in; Password receives controller and receives this radiofrequency signal by the high frequency receiving element, and it is done DTMF decoding and secondary decoding, and when receiving password with set conforming to, the driving electric control lock is opened lock; When not conforming to, audible alarm

The problem of this patent is that it is dtmf code that employed unlocking cipher is locked in remote control, because the limited length of dtmf code, therefore peace property is not high, and uses extremely inconvenient.

Application number is 200380104334.3 Chinese invention patent application, and it uses repeated encoding sequence (mk) to communicate by letter between transmitter device and receiver apparatus to disclose a kind of " wireless activation system, method and apparatus " by name.By synchronously changing the sequence duration at transmitter device and receiver apparatus, or by changing the number of code element in the sequence or section, or, make unauthorized side's detection coded sequence and relaying coded sequence how to be implemented in the undelegated activation difficulty of receiving equipment by changing code element or section speed.

Because the related Activiation method of this patent is the problem that the duration length of change sequence is opened relay attack, how the length of chip changes not explanation of manual, but can infer it is to realize by certain algorithm.Therefore also be easier to decode.

Application number is 200320111030.3 Chinese invention patent application, discloses a kind of by name " wireless remote control lock " and has been suitable for novelly, and the utility model relates to a kind of wireless remote control that can unblank without key and locks.It comprises motor, motor receiver of remote-control sytem, motor remote control transmitter, gear, dead bolt and lock body, motor receiver of remote-control sytem and gear are fixed in the lock body, the motor receiver of remote-control sytem is electrically connected with motor, fixed gear on the output shaft of motor, one end of dead bolt has tooth bar, with gears engaged, the other end and lock body wall matched in clearance can be stretched out in the lock body or withdraw.It has advantage safe and reliable, easy to use.

This scheme is not mentioned the unlocking cipher processing method, it seems that best-case also is the method for a kind of fixed password, does not therefore have safety and can say.

The Chinese invention patent application of application number 200420006223, the suitable novel of a kind of " vehicle cryptographic remote-control theftproof system " by name disclosed, mainly by comprising remote controller and the alarm main frame that is installed in the car, remote controller comprises radio receiving transmitting module, especially remote controller also comprises key groups, display screen and remote controller main circuit, the pin of microprocessor connects radio receiving transmitting module in the remote controller main circuit, key groups and display screen, be solidified with button input cipher software in the microprocessor, password authentification software, display screen drive software and wireless signal transmitting-receiving software, remote controller of the present utility model is when carrying out any operation to automobile, all to input the various anti-thefting facilities of password ability opening automobile, like this, only hold remote controller and do not know password, still can't handle automobile, strengthen the safety of vehicle greatly.

The essence of this scheme is to be provided with password then at receiving system in advance, the remote controller that sends signal all will be imported same password by keyboard when each the use, have only the remote-control key of working as to import the identical approval of preset password on password and the receiving system, otherwise report to the police from keyboard.The inventor thinks: though this method safety, complicated operation.

The patent No. is 6,980,655 United States Patent (USP) discloses a kind of method that is called " Rolling code security system ", the mode that this patent adopts rolling code to combine with fixed code, and will in conjunction with after the binary data data that are mapped as multi-system go modulated carrier to launch.

Draw by analysis top disclosed patent and technical literature, these remote control locks or remote control exist safety not high, use inconvenience or cause problems such as manufacturer and user's cause legal dispute.And study carefully the not high reason of security performance of its present electronic remote control anti-theft lock, be because there is defective in the cryptographic technique of present Remote control electronic lock.The unlocking cipher generating technique of existing electronic lock remote control (comprising remote control and contact) has two classes nothing but, and a class is fixed password (generally is used for low-grade remote control lock), and another kind of is by certain fixing rolling password of producing of algorithm.

Almost not having safety by the Remote control electronic lock of fixed password technical design can say, can just can immediately open lock as long as send same wireless signal then by the special scanning means scanning wireless signal that remote-control key sent because steal the person of robbing.

Though it is more higher than the front by the electronic remote-control lock safety that the rolling cryptographic technique of algorithm generation is designed, but also be matter of time, because the offender can be according to the algorithm or the generation rule that transmit and analyze the generation rolling code that repeatedly write down, thereby crack algorithm, so this neither the very high cipher mode of a kind of safety.Especially along with development of science and technology, the increase of computer speed and the improvement of crack method, the time of cracking AES also can be shorter and shorter.

This shows that the security performance that will make electronic lock improves, and just must solve the problem that password or cryptographic algorithm easily crack.The sign indicating number that is difficult for being cracked just can only be the sign indicating number with better randomness, not reproducible generation and unpredictable characteristic, just real random code.

Summary of the invention

In order to overcome the deficiencies in the prior art, the object of the invention provides a kind of remote control and method that adopts true random sequence as remote control lock unlocking cipher, adopt remote control and the method for true random sequence as remote control lock unlocking cipher, the password that can increase electronic remote-control lock greatly is scanned the difficulty that cracks, avoid the legal dispute of manufacturer, and easy to use.

Content of the present invention for convenience of description at first lays down a definition to used technical term.

(1) true random sequence: this is the sequence of a class completely random, and it has characteristics such as not reproducible generation and imprevision.It is not to be produced by certain concrete mathematical algorithm, but by producing after certain physical phenomenon is handled as noise.Mentioned true random sequence among the present invention is meant that all produce true random sequence or sequence that method produced or the general name of counting.

(2) true random sequence generator: it is the circuit unit that produces very with the note sequence, according to the mechanism difference of the production method of true random sequence, the circuit structure difference of this generator.Have many articles to propose the production method of true random sequence, comprising producing noise voltage by many approach, the simplest method is to add reverse biased in the avalanche breakdown zone of Zener diode.The unnecessary shot noise of this diode amplifies through fixed gain amplifier and variable gain amplifier.These Transducer Power Gain of Multistage Amplifiers must be enough high to produce the noise level of expectation.Then noise level being taken a sample quantizes the data of acquisition, is exactly true random sequence.Fig. 3 is exactly a kind of circuit that produces noise level.

(3) remote-control key: be the sub-device that produces and send wireless ON/OFF signal in the remote control.Comprised the encrypted message of needed one section true random sequence of unblanking in its unlocking signal as unlocking cipher.

(4) locking-controller: be to receive the wireless switching signal, and by send the sub-device of ON/OFF triggering signal behind the cryptanalysis to lock body.The generator of true random sequence is also in this device.

(5) central controlled processing unit: a central controlled processing unit is all arranged in remote-control key and locking-controller, they can be made up of with program software microprogramming devices such as DSP or single-chip microcomputers, handle and to the control and management process of other parts of forming remote-control key or locking-controller with the signal of finishing remote-control key or locking-controller

(6) identity code: each remote control is all monopolized a number, just is fixed in remote-control key and the locking-controller when producing.The identity code of key part can be rewritten, so that can the reprovision key when losing, and the identity code of locking-controller part can not be rewritten.

(7) original state: remote-control key or locking-controller are after start, and the program in its central controlled processing unit is being waited for the idle condition that receives message (comprising user's the keyboard instruction or the input signal of central other port of controlled processing unit).

(8) memory a: memory is all arranged respectively in remote-control key and locking-controller.It is a kind ofly can keep data or information apparatus or set of devices for a long time the outage descendant, and can read and write data or information at random.Memory can be divided into true random sequence storage area or unit, segment number storage area or unit, remote-control key password storage district or unit etc. as required.

(9) active key cipher: be the password of the key keyboard of lock remote control, only make the user correctly input this password, other operation of keyboard is just effective.

(10) first address: the memory of remote-control key and the memory of locking-controller all have a true random sequence storage area respectively, they are made up of many memory cell, each memory cell all has an address number successively, and the address number of first memory cell of true random sequence storage area is exactly a first address.

(11) tract: the total data that deposit the true random sequence storage area in remote-control key or the locking-controller has just been formed a long sequence, and the data segment of a fixed length that begins from any address of true random sequence storage area is exactly a tract

(12) Frame: be meant the data that remote-control key once sends, it forms a data sequence in order by frame head and tract, perhaps by frame head, open or close type, tract and sequence number and form a data sequence in order.

(13) segment number threshold value: in remote-control key and locking-controller, all preestablished a value, be used for comparing with the current segment number of real time execution, current segment number more than or equal to the time just show that the tract that is stored in the key has run low, upgrade or augment true random sequence with the prompting user.Choosing of segment number threshold value should be satisfied: the segment number threshold value is the length less than locking-controller true random sequence memory cell.

(14) this lot number: be meant the segment number in the true random sequence segment number memory cell in the locking-controller.

(15) identity is differentiated: the identity code of remote-control key being sent here at locking-controller compares with the identity code of locking-controller, if these two identity code identical just differentiate by or success, otherwise by or get nowhere.

(16) idle condition: remote-control key or controller for lock do not carry out that remote control " is opened " or the state during " pass " operation.

The invention provides a kind of remote control that adopts true random sequence as remote control lock unlocking cipher, it is characterized in that it comprises remote-control key, two devices of locking-controller;

Described remote-control key is made up of radiofrequency launcher 1, modulator 2, display screen 3 and display screen interface circuit 4, keyboard 5 and keyboard interface circuit 6, outside connector 7 and external data interface circuit 8, memory 9, central controlled processing unit 14; Comprise true random sequence storage area 10 and identity code storage area 11, true random sequence segment number storage area 12 and the active password storage of key unit 13 in the described remote-control key memory 9;

The annexation that the inside of described remote-control key is formed is as shown in Figure 4: the output of keyboard interface circuit 6 is connected to the input of central controlled processing unit 14, the corresponding connection of the output of display screen interface circuit 4 with the input of display screen 3, the input of display screen interface circuit 4 is connected with the output of central controlled processing unit 14, the data wire of memory 9 is connected with the address strobe line with the data wire of 14 of central controlled processing units respectively with address wire, the output of the signal that locks on/off of central authorities' controlled processing unit 14 links to each other with the input of modulating unit 2, the output of modulating unit 2 links to each other with the input of radiofrequency launcher 1, the bidirectional data line of external data interface circuit 8 links to each other with external lug 7, and external data interface circuit 8 other bidirectional data lines link to each other with the data wire of central controlled processing unit 14 simultaneously;

Described locking-controller is by display screen 20 and display interface circuit 21, radio frequency receiver 15, demodulator 16, true random sequence generation circuit unit 17, locking-controller memory 24, and locking-controller keyboard 18 and locking-controller keyboard input circuit unit 19, locking-controller central authorities controlled processing unit 30, locking-controller external data access interface circuit 23, the outside connector 22 of locking-controller, lock body ON/OFF circuits for triggering 29, shell are formed; Described locking-controller memory 24 has comprised locking-controller true random sequence memory cell 25, locking-controller identity code memory cell 26, locking-controller true random sequence segment number memory cell 27, locking-controller key cipher memory cell 28;

The internal circuit annexation of described locking-controller is as shown in Figure 5: the output line of locking-controller keyboard 18 is connected to the output of locking-controller keyboard interface circuit 19, the output of locking-controller keyboard interface circuit 19 is connected to the input of locking-controller central authorities controlled processing unit 30, the output of locking-controller display screen interface circuit 21 is connected with the input of locking-controller display screen 20, the input of locking-controller display screen interface circuit 21 is connected with the output pin of locking-controller central authorities controlled processing unit 30, the data of locking-controller memory 24 are connected with the address strobe line with the data wire of 30 of the central controlled processing units of locking-controller respectively with address wire, the input of the signal that locks on/off of locking-controller central authorities controlled processing unit 30 links to each other with the output of demodulator 16, the input of demodulator 16 is connected with the output of radio frequency receiver 15, the bidirectional data line of locking-controller external data interface circuit 23 links to each other with locking-controller external lug 22, locking-controller external data interface circuit 23 other bidirectional data lines link to each other with the data wire of the central controlled processing unit 30 of locking-controller simultaneously, the data output end of the true random sequence generator 17 of locking-controller is connected with the data input pin of locking-controller central authorities controlled processing unit 30, the control signal input of the true random sequence generator 17 of locking-controller is connected with the sequence control signal output of locking-controller central authorities controlled processing unit 30, another control output end of locking-controller central authorities controlled processing unit 30 is connected with the input of lock body ON/OFF trigger control unit 29, and the output of lock body ON/OFF trigger control unit 29 is connected with lock body.

Described transmitter 1 is the analog signal of modulator 2 output to be carried out processing such as mixing, filtering, power amplifier then convert radio wave transmission to by antenna and go out.

The ON/OFF data signal that described modulator 2 is produced central controlled processing unit 14 converts the analog signal that is fit to the wireless channel transmission to, and the model that modulator 2 can select for use U.S. ADI company to produce is 8436 modulators.

Described display screen 3 can be any OLED display (as EMA-100052-01) or liquid crystal micro display;

Described display screen interface circuit 4 is the input and output coupling change-over circuits between central controlled processing unit and display screen.Display screen and display interface circuit are referring to " a kind of design of single-chip computer control system keyboard/display circuit and the realization " document among http://scholar.ilib.cn/A-dzgcs200007013.htm or in July, 2000 Electronics Engineer

The keyboard of remote-control key and keyboard interface circuit are 7-81077-484-0 documents such as " 51 series monolithic high level example development guides " referring to http://scholar.ilib.cn/A-xnjtdxxb200406019.html or 2006.06 Electronics Engineers " full combined type keyboard circuit building method " and Electronic Industry Press's book number.

Described outside connector 7 is the joint that is connected with locking-controller; Signal by this joint has the true random sequence that locking-controller produces, the identity code of key etc., and outside connector 7 can be the male of USB modular connection, also can be the non-standard joint of oneself definition.

Comprise true random sequence storage area 10 and identity code storage area 11, true random sequence segment number storage area 12 and the active password storage of key unit 13 in the described remote-control key memory 9.True random sequence storage area 10 is used to store the true random sequence of augmenting at every turn or upgrading; True random sequence segment number storage area 12 is used to store the segment number record of current sensing true random sequence section.

Need to prove that described central controlled processing unit 14 is mainly finished following function and subprocess:

One class function: external interface signals is handled, comprise:, and analyze actuation of keys or the pairing control command of input data information by keystroke interface circuit 6 monitoring actuation of keys, by external data interface 8 monitoring external data joint 7 connection status or input data;

Two class functions: make control corresponding according to external command and handle, comprise that true random sequence, histological structure and the control upgrading or augment send " opening "/" pass " signal, are provided with the active password of remote-control key etc.;

Three class functions: in each state or link, export information by the control display interface circuit;

The processing controls implementation procedure of central authorities' controlled processing unit 14 has: the process of true random sequence prompting is locked process, the process of upgrading or augment true random sequence, key cipher setting up procedure, upgrades or is augmented in the switch remote control.

(1) process of described " ON/OFF " remote control lock: after the user presses unlock key or input key cipher, read the pairing true random sequence section of segment number in the true random sequence segment number storage area 12 and form Frame, being input to modulator 2 modulates, signal after the modulation sends wireless signal by transmitter 1 again, upgrades the value of true random sequence segment number storage area 12 simultaneously.When the numeral of true random sequence segment number storage area 12 during greater than the segment number threshold value, just send cue by display screen by central controlled processing unit 30, remind the user to produce true random sequence again.

(2) described renewal or augment the process of true random sequence: when receiving after external data interface is connected to the trigger message of locking-controller, read identity code and output on the external data interface 8, regularly wait for occurring upgrading or augmenting instruction on the interface.When receive identity differentiate successfully with renewal or supplemental information after, just true random sequence storage area 10 original sequences are removed, wait for and receive and store random number from external data interface 8 then, receive up to the transmission data, then segment number is carried out initialization and sends successfully prompting to display screen 3; Do not differentiate into function signal if in the time of waiting for, receive identity, then finish subsequent process and get back to original state, and provide the prompting of failure.

(3) the active cryptographic processes of described replacing key.Forget Password for fear of the active password of arbitrarily being changed key by the people and owner and to cause trouble, this process also is just can carry out after remote-control key and locking-controller are connected.Its process is: after receiving external data interface 8 and trigger message that locking-controller is connected, read identity code and output on the external data interface 8, regularly wait for the instruction that occurs changing the active password of key on the interface, after in timing range, receiving the instruction of changing the active password of key, provide and allow the change prompting, and reception and storage keyboard input data, simultaneously key in data is outputed to data-interface 8.

(4) described renewal or augment the prompting process of true random sequence, this process is the subprocess in " ON/OFF " remote control lock process, also can be undertaken by regularly triggering.Its process is: central controlled processing unit 14 reads the segment number of true random sequence segment number storage area 12, provides the prompting of respective degrees according to the result of the comparison of this segment number and thresholding segment number.

The display screen 20 of described locking-controller adopts the liquid crystal micro display screen, is 1-SFT50i. as model

Described locking-controller display interface circuit 21 is interface conversion of finishing between display screen and central controlled processing unit, and display interface circuit 21 is interface conversion of finishing between display screen and central controlled processing unit; Its implementation can be referring to " a kind of design of single-chip computer control system keyboard/display circuit and the realization " document among http://scholar.ilib.cn/A-dzgcs200007013.htm or in July, 2000 Electronics Engineer.

Described radio frequency receiver 15 will receive wireless signal from antenna and convert analog electrical signal to, amplify, be input to demodulator 16 demodulation after the processing such as filtering, and radio frequency receiver 15 is made up of radio frequency amplifying circuit, mixting circuit, bandpass filter etc.;

Described demodulator 16 becomes data signal with analog signal conversion, and is input to locking-controller central authorities controlled processing unit 30 and carries out analyzing and processing; The model that can select the ADI company production of the U.S. for use is 8436 demodulator

Described locking-controller keystroke interface circuit 19 is to be digital electric signal with the manual operation information translation, and is input to central controlled processing unit 30 and carries out analyzing and processing; The Interface design of keyboard and keyboard is 7-81077-484-0 documents such as " 51 series monolithic high level example development guides " referring to http://scholar.ilib.cn/A-xnjtdxxb200406019.html or 2006.06 Electronics Engineers " full combined type keyboard circuit building method " and Electronic Industry Press's book number.

Described lock body ON/OFF circuits for triggering 29 are that the ON/OFF instruction transformation that lock body sends is become the needed signal of telecommunication of lock body ON/OFF, and it can be made up of a latch and relay, and latch is chosen as 74HC244.

Described true random sequence generation circuit unit 17 is generations of finishing true random sequence under the control of central controlled processing unit, and data are stored in the locking-controller true random sequence storage area 25, and output on the locking-controller external data interface 23 by locking-controller central authorities controlled processing unit 30;

Described locking-controller true random sequence memory cell 25 is used to store the true random sequence of augmenting at every turn or upgrading.

Described locking-controller true random sequence segment number memory cell 27 is used to store the segment number of current sensing true random sequence section or the initial address of hunting zone;

26 storage identity code are got in described locking-controller identity code storage;

The active password of the key of described locking-controller key cipher memory cell 28 storage user's modification.

Need to prove that locking-controller central authorities controlled processing unit 30 is handled following process:

(1) course of work of " ON/OFF " lock: after receiving element 15 receives the wireless signal that remote-control key sends, by demodulator 16 demodulation, data-signal after the demodulation is input to central controlled processing unit 30, at first analyzing is " opening " or " pass " signal, when judging signal and be " opening ", can divide two kinds of schemes to handle:

(1) utilizes the scheme of segment number information, this processing procedure is that the data decomposition after demodulation goes out segment number and true random sequence section, and segment number that decomposites and the difference of reading between the locking-controller segment number memory cell are judged, if the difference of judging exceeds given scope, then this process leaves it at that; Have only when difference is in given scope, just true random sequence section that receives and the tract that receives in the pairing locking-controller of segment number are compared, when having only two sequences identical, just control lock body switch triggering circuit 29 and send the instruction of opening lock body, and the value of renewal segment number memory cell, get back to original state then.

(2) do not utilize the scheme of segment number information, this processing procedure is: fetch squence section the data after demodulation, in a given segment number scope, read tract from the true random sequence segment number memory cell 27 indicated section beginnings of locking-controller backward piecemeal then, whenever read one section just with data after demodulation the fetch squence section compare, if and only if when reading the tract identical with the tract that receives, just no longer read tract, send unlock command, and the value of the true random sequence segment number memory cell 27 of renewal locking-controller is got back to original state then for receiving the value of segment number.

(2) upgrade and augment the process of true random sequence: after CCC recognizes and upgrades or augment instruction, judge earlier whether the remote-control key on the external data interface normally connects, after connecting normally, read and differentiate the identity code of remote-control key from external data interface, after discriminating is passed through, just read keyboard 18 input data, to upgrade and augment and output to external data access interface 23 with data, and according to instruction and data control true random sequence generating unit generation true random sequence, simultaneously the original sequence of sequence memory cell is removed, read the true random sequence of true random sequence generator 17 outputs then, the true random sequence that will newly produce deposits sequence storage area 25 on the one hand, on the other hand true random sequence is outputed to the external data access interface, send an end mark to data-interface 23 then, and to display screen 20 output " success " promptings, and the data of locking-controller sequence segment number unit true random sequence are set to the first address of true random sequence memory cell 25.Remote-control key is abnormal to be connected or identity is differentiated not undesiredly if judge, and then locking-controller all can be by the information of display interface 21 output failures, and finishes follow-up process and get back to original state.

(3) upgrade and augment the prompting process of true random sequence.The prompting similar process of this process and remote-control key is not repeated.

A kind of method that adopts true random sequence as remote control lock unlocking cipher provided by the invention is characterized in that: it comprises the generation of true random sequence and management method, when unblanking remote-control key signal sending method, when unblanking the locking-controller decoding with unblank processing method;

The generation of described true random sequence and management method realize that it may further comprise the steps under remote-control key and controller for lock idle condition:

The first step: the user is joined with locking-controller external lug 11 by the external lug 7 of remote-control key, remote-control key and locking-controller are linked together, before the connection, remote-control key central authorities' controlled processing unit 14 and locking-controller controlled processing unit 30 all are in original state;

Second step: remote-control key sends the signal that comprises identity code and active key cipher to locking-controller;

The 3rd step: the central controlled processing unit 14 of locking-controller receives and carries out identity after the identity code of remote-control key and differentiate;

The 4th step: if the 3rd step differentiate by identity, just entered into for the 5th step; If the 3rd step differentiated by identity, the central controlled processing unit 30 of the locking-controller original state of getting back to locking-controller then, the central controlled processing unit 14 of remote-control key is also got back to the original state of remote-control key, and the 5th goes on foot ten carries out once going on foot no longer;

The 5th step: the central controlled processing unit 30 of locking-controller is to display screen 20 output " renewal " or " augmenting " informations of locking-controller, and wait keyboard 18 input instruction and sequence lengths;

The 6th step: before remote-control key and locking-controller disconnection,, just entered for the 7th step if the central controlled processing unit 30 of locking-controller is received the operational order of locking-controller keyboard 18 inputs in the 5th step; If remote-control key and locking-controller just disconnect before the central controlled processing unit 30 of locking-controller is received locking-controller keyboard 18 operational orders, the central controlled processing unit 14 of remote-control key and locking-controller central authorities controlled processing unit 30 is all got back to original state, and the 7th went on foot for 12 steps just no longer carries out;

The 7th step: the central controlled processing unit 30 of locking-controller receives the instruction of locking-controller keyboard 18 inputs in the 6th step, if the instruction that receives is " renewal " instruction, the central controlled processing unit 30 of locking-controller just empties locking-controller true random sequence memory cell 25, sends out " renewal " instruction by external data interface circuit 23 to remote-control key simultaneously; If the instruction that receives is " augmenting " instruction, the central controlled processing unit 30 of locking-controller just moves on to the zone that first address begins successively with data not used in the true random sequence memory cell 25, sends out " augmenting " instruction by external data interface circuit 23 to remote-control key simultaneously;

The 8th step: if remote-control key central authorities controlled processing unit 14 receives " renewal " instruction, control key central authorities controlled processing unit 14 just empties remote-control key sequence storage area 10; If receive " augmenting " instruction, just sequence storage area 10 not used data moved on to the zone that first address begins successively;

The 9th step: locking-controller central authorities controlled processing unit 30 control true random sequence generators 17 produce true random sequence;

The tenth step: the true random sequence that locking-controller central authorities controlled processing unit 30 produced for the 9th step stores in the address that the true random sequence memory cell 25 blank parts foremosts of locking-controller begin; The true random sequence that locking-controller central authorities controlled processing unit 30 produced for the 9th step simultaneously is input in the central controlled processing unit 14 of remote-control key by the external data interface circuit 23 of locking-controller, and the central controlled processing unit 14 of remote-control key is stored in true random sequence in the address that the 10 empty part foremosts, true random sequence storage area of remote-control key begin again;

The 12 step: locking-controller central authorities controlled processing unit 30 becomes the data rewriting of locking-controller true random sequence segment number memory cell 27 first address of true random sequence memory cell 25, and, get back to original state then to locking-controller display screen 20 output " success " information;

The 13 step: remote-control key central authorities controlled processing unit 14 is rewritten into the segment number of true random sequence segment number storage area 12 first address of sequence storage area 10; And, get back to original state then to remote-control key display screen output informations such as " successes of this process ";

The method of remote-control key transmission unlocking signal comprises during described unblanking: a kind of is to contain segment number information processing method in the unlocking signal, and another kind is not contain segment number information processing method in the unlocking signal;

Contain segment number information processing method during described unblanking in the unlocking signal, it may further comprise the steps:

The first step: control key central authorities controlled processing unit 14 reads the segment number in the true random sequence segment number memory cell 12;

Second step: remote-control key central authorities controlled processing unit 14 reads the pairing tract of resulting segment number in the first step from remote-control key true random sequence storage area 10;

The 3rd step: the tract of gained was formed Frame during key central authorities controlled processing unit 14 went on foot the segment number and second that the first step read;

The 4th step: remote-control key central authorities controlled processing unit 14 is rewritten into the segment number of remote-control key true random sequence segment number storage area 12: the obtained segment number of the first step adds the value after the numerical value of N, N=1,2,3.....L, L less than remote-control key true random sequence storage area 10 length;

The 5th step: the Frame that remote-control key central authorities controlled processing unit 14 obtained for the 3rd step outputs to modulator 2;

The 6th step: 2 pairs of Frames of modulator are modulated, and the signal after the modulation is input to transmitter 1;

The 7th step: whether more than or equal to default segment number threshold value, choosing of segment number threshold value is satisfied: the segment number threshold value is the length less than locking-controller true random sequence memory cell by revised segment number of the 4th step in central controlled processing unit 14 judgements of remote-control key; If the 4th step, revised segment number was greater than default segment number threshold value, the central controlled processing unit 14 of remote-control key just shows " augmenting " on remote-control key display screen 3 or " " point out, the central controlled processing unit 14 of remote-control key is got back to original state then in renewal; If revised segment number of the 4th step is less than default segment number threshold value, the central controlled processing unit 14 of remote-control key is just directly got back to original state;

Do not contain segment number information processing method during described unblanking in the unlocking signal, it may further comprise the steps:

The first step: remote-control key central authorities controlled processing unit 14 reads the segment number in the true random sequence segment number storage area 12;

Second step: remote-control key central authorities controlled processing unit 14 reads the pairing tract of first step gained segment number from remote-control key true random sequence storage area 10;

The 3rd step: the tract that the central controlled processing unit 14 of remote-control key obtained for second step is formed Frame;

The 4th step: remote-control key central authorities controlled processing unit 14 is rewritten into value after segment number that the first step is got adds numerical value of N with the segment number of remote-control key segment number memory cell 12, N=1,2,3.....L, L less than remote-control key true random sequence storage area 10 length;

The 5th step: remote-control key central authorities controlled processing unit 14 outputs to modulator 2 with the Frame in the 3rd step;

The 6th step: 2 pairs of Frames of modulator are modulated, and the signal after the modulation is input to transmitter 1;

The 7th step: the central controlled processing unit 14 of remote-control key judges that whether revised segment number of the 4th step is more than or equal to default segment number threshold value, choosing of segment number threshold value is satisfied: the segment number threshold value is the length less than locking-controller true random sequence memory cell, if revised segment number of the 4th step just shows " augmenting " greater than the central controlled processing unit 14 of default segment number threshold value remote-control key on remote-control key display screen 3 or " " point out, the central controlled processing unit 14 of remote-control key is got back to original state then in renewal; If revised segment number of the 4th step is less than default segment number threshold value, the central controlled processing unit 14 of remote-control key is just directly got back to original state;

The decoding method for unlocking of locking-controller also has two kinds during described unblanking, and a kind of is that unlocking signal contains segment number information processing method, and another kind is that unlocking signal does not have segment number information processing method;

The decoding that unlocking signal contains segment number information during described unblanking is made up of following steps with the processing method of unblanking:

The first step: the receiver 15 of locking-controller is delivered to demodulator 16 after receiving the signal that remote-control key sends;

Second step: the signal that 16 pairs of receivers 15 of demodulator are sent carries out demodulation, obtains data signal, and the data signal that obtains is delivered to the central controlled processing unit 30 of locking-controller;

The 3rd step: locking-controller central authorities controlled processing unit 30 is read segment number and tract from receive data signal;

The 4th step: locking-controller central authorities controlled processing unit 30 reads this lot number from the true random sequence segment number memory cell 27 of locking-controller;

The 5th step: the sequence segment number and the 4th that locking-controller central authorities controlled processing unit 30 pairs the 3rd steps read goes on foot this lot number that reads and compares, if this lot number that the 3rd sequence segment number that read of step read greater than the 4th step and both differences are less than M, M is a predefined threshold value, the M value is the positive integer less than the length of locking-controller true random sequence memory cell 25, and then locking-controller central authorities controlled processing unit 30 carried out for the 6th step; Otherwise locking-controller central authorities controlled processing unit 30 is got back to original state;

The 6th step: the central controlled processing unit 30 of locking-controller reads the pairing tract of sequence segment number that second step obtained from locking-controller true random sequence memory cell 25;

The 7th step: the tract and the 3rd that the central controlled processing unit 30 of locking-controller read for the 6th step goes on foot the tract that obtains and compares, if both are identical, just carried out for the 7th step, if both are inequality, the central controlled processing unit 30 of locking-controller is got back to original state;

The 8th step: the central controlled processing unit 30 of locking-controller sends " opening " instruction to switch lock body ON/OFF circuits for triggering 29;

The 9th step: the central controlled processing unit 30 of locking-controller is rewritten into the segment number of locking-controller true random sequence segment number memory cell 27: resulting segment number of the 3rd step adds the value after the numerical value of N, get back to original state then, N=1,2,3.....L L is less than the length of locking-controller true random sequence storage area 25;

Do not have the decoding of the segment number information processing method of unblanking to form during described unblanking in the unlocking signal by following steps:

The first step: the receiver 15 of locking-controller is delivered to demodulator 16 after receiving the signal that remote-control key sends;

Second step: the signal that 16 pairs of receivers 15 of demodulator are sent carries out demodulation, obtains data signal, and data signal is delivered to the central controlled processing unit 30 of locking-controller;

The 3rd step: locking-controller central authorities controlled processing unit 30 is read tract from receive data signal;

The 4th step: locking-controller central authorities controlled processing unit 30 reads this lot number from the true random sequence segment number memory cell 27 of locking-controller,

The 5th step: the central controlled processing unit 30 of locking-controller reads the pairing tract of this lot number from locking-controller true random sequence memory cell 25;

The 6th step: the central controlled processing unit 30 of locking-controller is provided with a counting variable K, and the initial value of counting variable K is 0;

The 7th step: the tract and the 5th that the central controlled processing unit 30 of locking-controller read for the 3rd step goes on foot the tract that is read and compares, if both are identical, just enters for the 11 step; If both are inequality, the central controlled processing unit 30 of locking-controller entered for the 8th step;

The 8th step: the central controlled processing unit 30 of locking-controller is rewritten into the value of locking-controller true random sequence segment number memory cell: the value behind this lot number addend value N that the 4th step obtained, and simultaneously counting variable is rewritten into: the value of current counting variable adds the value after 1, N=1,2,3 ..., L; L is less than the positive integer of the length of locking-controller true random sequence memory cell 25;

The 9th step: judge whether counting variable K surpasses the H value, and H is a counter gate limit value of presetting, and the H value is the positive integer less than the length of locking-controller true random sequence storage area 25;

The tenth step: if counting variable K does not surpass H, just repeated for the 6th step, if counting variable K surpasses H, the central controlled processing unit 30 of locking-controller is got back to original state;

The 11 step: the central controlled processing unit 30 of locking-controller sends " opening " instruction to lock body ON/OFF circuits for triggering 29;

The 12 step: the central controlled processing unit 30 of locking-controller is rewritten into the segment number of the current true random sequence segment number of locking-controller memory cell 27: the 3rd step gained segment number adds the value behind the N, the central controlled processing unit 30 of locking-controller is got back to original state then, N=1,2,3.....L, L less than remote-control key true random sequence memory cell 25 length.

Essence of the present invention is: use different true random sequence sections to realize with the one-time pad method of true random sequence as unlocking cipher as the password of once unblanking by the completely random of having utilized true random sequence with each, next so used password can not calculate out by the password of using in the past, the remote-control key password is scanned or password that alternate manner uses after can't decoding out after stealing.

It is to be stored in wherein a section in the whole machine true random sequence in the sequence storage area that the present invention adopts the password of unblanking, and unblanks all to use different true random sequence sections at every turn, is distinguished by segment number in remote-control key and the remote control lock; Therefore increased the safety of remote control lock, grasped key without the manufacturer simultaneously, therefore avoided manufacturer's legal liabilities, give simultaneously the user again the reprovision key bring convenience.

Innovative point of the present invention is

(1) in the remote control of remote control lock, adopted true random sequence as unlocking cipher,

(2) true random sequence combines with the one-time pad encryption method.

Beneficial effect of the present invention

(1) avoided the wireless remote control locking to make the jural risk of merchant

The producer of existing electronic lock has grasped the password or the algorithm of the electronic lock that all these businessmans manufacture, if it is stolen that therefore the target of electronic lock be installed, then there is the suspicion of divulging a secret in the production firm of this electronic lock, and may bear legal responsibility.And the cryptographic methods that the present invention proposes is not to produce according to algorithm, and concrete password is not known by production firm, therefore, has exempted the responsibility of production firm.

(2) avoided the unlocking cipher leakage problem of Remote control electronic lock

Because true random sequence is the unpredictable of completely random, even the professional also can't crack the used tract of next unblocking key, even therefore repeatedly scanned also of no avail by the offender.

(3) thoroughly solve the lock password and be scanned the potential safety hazard of bringing

Existing a lot of electronic chip formula locks all exist password to be scanned the danger of stealing.The offender hands a password acquisition mechanism, stand in automobile near, when owner unblanks, scanning means will be intercepted and captured signal that the car owner sends and it will be stored, and send this signal again after owner leaves, and Automobile Electronie Lock is cracked.The way that tackles scanning at present mainly is the rolling code system, for example more famous keeploq system, system all will launch through certain algorithm generation rolling code each time, and the sign indicating number of each emission is all inequality, but still there is the danger that is scanned in this rolling code system, the offender only need note the password of each emission, analyzes the algorithm that produces rolling code, just can produce the password that can open lock.

(4) prevented the problem of security system man-in-the-middle attack

General remote-control unlocking device is easy to be utilized by the offender, and they can borrow remote-control key, duplicate it then and transmit, lock is opened, or claim key loss, after the car owner has been equipped with new key again, under its complete ignorant situation, lock is opened.At above-mentioned situation, this security system, adopt double encryption approach, even the stranger has taken remote-control key away, owing to do not know the remote-control key password of car owner's setting, still can't open lock, and after remote-control key is lost, owner can change sequence very immediately immediately very easily, and the key of losing was lost efficacy.

Description of drawings

Fig. 1 be existing Keeloq algorithm rolling code encoder chip HCS300 formation security system the coding transtation mission circuit;

Fig. 2 be existing Keeloq algorithm rolling code encoder chip HCS300 formation security system the reception decoding circuit;

Fig. 3 is the realization circuit diagram of true random sequence generator;

Fig. 4 is the composition frame chart of remote-control key internal circuit

Fig. 5 is the composition frame chart of locking-controller internal circuit

Fig. 6 is the generation and the management process flow chart of true random sequence

Fig. 7 is based on the remote-control key that contains the segment number information processing method and sends the unlocking signal process flow diagram flow chart,

Fig. 8 is based on the remote-control key that does not contain the segment number information processing method and sends the unlocking signal process flow diagram flow chart

Fig. 9 is based on the decoding that contains segment number information and the process flowchart of unblanking

Figure 10 is based on the decoding that does not contain segment number information and the process flowchart of unblanking

Figure 11 is a kind of overall work flow instance of remote-control key schematic diagram

Figure 12 is remote-control key starts the central controlled processing unit handling process in back at the ON/OFF key a kind of example schematic.

Figure 13 contains under the mode of unlocking cipher of segment number, and locking-controller central authorities controlled processing unit 30 is handled an example that locks on/off.

Figure 14 does not contain under the unlocking cipher mode of segment number, and locking-controller central authorities controlled processing unit is handled an example that locks on/off.

Wherein, the 1st, the radiofrequency launcher of remote-control key, the 2nd, the modulator of remote-control key, the 3rd, the display screen of remote-control key, the 4th, the interface circuit of display screen, the 5th, the keyboard of remote-control key, the 6th, the remote-control key keyboard interface circuit, the 7th, the external data joint of remote-control key, the 8th, the external data interface circuit of remote-control key, the 9th, the memory of remote-control key, the 10th, remote-control key true random sequence storage area, the 11st, identity code storage area, the 12nd, true random sequence segment number storage area, the 13rd, remote-control key energy password storage unit, the central controlled processing unit of 14 remote-control keys, the 15th, the radio frequency receiver of locking-controller, the 16th, demodulator, the 17th, true random sequence generator, the 18th, the keyboard of locking-controller, the 19th, locking-controller keystroke interface circuit, the 20th, the display screen of locking-controller, the 21st, display interface circuit, the 22nd, the outside connector of locking-controller, the 23rd, locking-controller external data interface circuit, the 24th, the memory of locking-controller, the 25th, the true random sequence memory cell of locking-controller, the 26th, identity code memory cell, the 27th, locking-controller true random sequence segment number memory cell, the 28th, the key cipher memory cell of locking-controller, the 29th, lock body ON/OFF circuits for triggering, the 30th, the central controlled processing unit of locking-controller.

The specific embodiment

In the automobile remote-control lock system, the central controlled processing unit 14 of remote-control key and what select for use is 8051 chips, lock body ON/OFF trigger control circuit 29 is made up of a latch and relay, latch is elected 74HC244 as, the major part of this true random sequence generator design as shown in Figure 3, the model that modulator 2 and demodulator 16 all select for use the ADI company of the U.S. to produce is 8436 demodulator, and outside connector 7 is public parts of USB modular connection; Remote-control key display screen 3 and locking-controller display screen 20 all are the liquid crystal micro displays; The subprogram design cycle of remote-control key central authorities' controlled processing unit 14 and locking-controller central authorities controlled processing unit 30 such as Figure 11, Figure 12, Figure 13, shown in Figure 14.

Three kinds of interrupt situation of the central controlled processing unit 30 of remote-control key have been shown among Figure 11: keyboard interrupt is connected interruption with the external data access interface; 1 interrupts identification and push button signalling analytic process; Regularly wait for input password state for one; 4 sub-processing procedures: active password setting process, the ON/OFF processing procedure of remote-control key, augment or renewal process and augment or upgrade the prompting process;

Among Figure 12, remote-control key central authorities controlled processing unit is from idle condition, when the user input password or directly by the ON/OFF key after, at first remote-control key central authorities controlled processing unit judges whether password consistent with the password of storing, if inconsistent, then get back to idle condition; If it is consistent, then regularly wait for that the user presses the ON/OFF key, do not receive key information when surpassing timing range or button is non-ON/OFF key, then get back to idle condition, when in timing range, receiving " pass " key, then form " closing order " Frame, otherwise will read the information such as the pairing tract of value of true random sequence segment number storage area 12, and with these information composition " opening order " Frames, segment number adds 1 simultaneously; Be that " opening order " or " opening order " all are imported in the modulator 2 and modulate; Whether also will judge segment number then greater than predetermined segment number threshold value, greater than just providing renewal or augment the true random sequence prompting by display screen or pronunciation, if reach maximum value, then the segment number auto-initiation is first segment number automatically

Among Figure 13, control the central controlled processing unit 30 of trivial device under idle condition, from the output received signal of demodulator 16, the analysis and judgement signal is opened or is closed, if " pass " just shuts order to 29 of ON/OFF circuits for triggering; If " opening ", then from received signal, extract segment number, true random sequence segment number memory cell 27 with the trivial device of control compares again, have only big and differ in the scope of 1K when the segment number that receives, just the tract in the received signal and receive segment number the tract of corresponding true random sequence memory cell 25, two tracts relatively, and judge whether in full accord, if consistent, then triggering 29 unlock instructions of ON/OFF control circuit and upgrading segment number for the segment number that receives and add 1.

Among Figure 14, at first locking-controller central authorities controlled processing unit 30 is under idle condition, and from the output received signal of demodulator 16, the analysis and judgement signal is opened or closed, if " pass " just shuts order to 29 of ON/OFF circuits for triggering; If " opening ", the value of abstraction sequence section and true random sequence segment number memory cell 27 from received signal just, this segment number is as current segment number, and process is promptly below the circulation then:

Read the value of current segment number sequence memory cell pointed, compare, in full accord when comparative result, circulation finishes, and sends out " opening " instruction to the switch triggering unit, and current segment number adds 1, if inconsistent, current segment number added 1, and judge whether the scope that segment number upgrades exceeds given range, if exceed given range, circulation finishes also directly to get back to idle condition.

Claims (2)

1. a remote control that adopts true random sequence as remote control lock unlocking cipher is characterized in that it comprises remote-control key, two devices of locking-controller;

Described remote-control key is made up of radiofrequency launcher (1), modulator (2), display screen (3) and display screen interface circuit (4), keyboard (5) and keyboard interface circuit (6), outside connector (7) and external data interface circuit (8), memory (9), central controlled processing unit (14); Comprise true random sequence storage area (10) and identity code storage area (11), true random sequence segment number storage area (12) and the active password storage of key unit (13) in the described remote-control key memory (9);

The annexation that the inside of described remote-control key is formed is: the output of keyboard interface circuit (6) is connected to the input of central controlled processing unit (14), the output of display screen interface circuit (4) and the corresponding connection of the input of display screen (3), the input of display screen interface circuit (4) is connected with the output of central controlled processing unit (14), the data wire of memory (9) and address wire respectively with central controlled processing unit (14) between data wire be connected with the address strobe line, the output of the signal that locks on/off of central authorities' controlled processing units (14) links to each other with the input of modulating unit (2), the output of modulating unit (2) links to each other with the input of radiofrequency launcher (1), the bidirectional data line of external data interface circuit (8) links to each other with external lug (7), and the other bidirectional data line of external data interface circuit (8) links to each other with the data wire of central controlled processing unit (14) simultaneously;

Described locking-controller is by display screen (20) and display interface circuit (21), radio frequency receiver (15), demodulator (16), true random sequence generation circuit unit (17), locking-controller memory (24), and locking-controller keyboard (18) and locking-controller keyboard input circuit unit (19), locking-controller central authorities controlled processing unit (30), locking-controller external data access interface circuit (23), the outside connector (22) of locking-controller, lock body ON/OFF circuits for triggering (29), shell are formed; Described locking-controller memory (24) has comprised locking-controller true random sequence memory cell (25), locking-controller identity code memory cell (26), locking-controller true random sequence segment number memory cell (27), locking-controller key cipher memory cell (28);

The internal circuit annexation of described locking-controller is: the output line of locking-controller keyboard (18) is connected to the output of locking-controller keyboard interface circuit (19), the output of locking-controller keyboard interface circuit (19) is connected to the input of locking-controller central authorities' controlled processing units (30), the output of locking-controller display screen interface circuit (21) is connected with the input of locking-controller display screen (20), the input of locking-controller display screen interface circuit (21) is connected with the output pin of locking-controller central authorities' controlled processing units (30), the data of locking-controller memory (24) and address wire respectively with locking-controller central authorities' controlled processing units (30) between data wire be connected with the address strobe line, the input of the signal that locks on/off of locking-controller central authorities' controlled processing units (30) links to each other with the output of demodulator (16), the input of demodulator (16) is connected with the output of radio frequency receiver (15), the bidirectional data line of locking-controller external data interface circuit (23) links to each other with locking-controller external lug (22), the other bidirectional data line of locking-controller external data interface circuit (23) links to each other with the data wire of locking-controller central authorities' controlled processing units (30) simultaneously, the data output end of the true random sequence generator of locking-controller (17) is connected with the data input pin of locking-controller central authorities' controlled processing units (30), the control signal input of the true random sequence generator of locking-controller (17) is connected with the sequence control signal output of locking-controller central authorities' controlled processing units (30), another control output end of locking-controller central authorities' controlled processing units (30) is connected with the input of lock body ON/OFF trigger control unit (29), and the output of lock body ON/OFF trigger control unit (29) is connected with lock body.

2. a kind of remote control that adopts true random sequence as remote control lock unlocking cipher according to claim 1, realize to adopt the method for true random sequence, it is characterized in that as remote control lock unlocking cipher: it comprises the generation of true random sequence and management method, when unblanking remote-control key signal sending method, when unblanking the locking-controller decoding with unblank processing method;

The generation of described true random sequence and management method realize that it may further comprise the steps under remote-control key and controller for lock idle condition:

The first step: the user is joined with locking-controller external lug (11) by the external lug (7) of remote-control key, remote-control key and locking-controller are linked together, before the connection, remote-control key central authorities' controlled processing unit (14) and locking-controller controlled processing unit (30) all are in original state;

Second step: remote-control key sends the signal that comprises identity code and active key cipher to locking-controller;

The 3rd step: the central controlled processing unit (14) of locking-controller receives and carries out identity after the identity code of remote-control key and differentiate;

The 4th step: if the 3rd step differentiate by identity, just entered into for the 5th step; If the 3rd step differentiated by identity, the central controlled processing unit (30) of the locking-controller original state of getting back to locking-controller then, the original state that the central controlled processing unit (14) of remote-control key is also got back to remote-control key, the 5th goes on foot ten carries out once going on foot no longer;

The 5th step: the central controlled processing unit (30) of locking-controller is to display screen (20) output " renewal " or " augmenting " information of locking-controller, and wait keyboard (18) input instruction and sequence length;

The 6th step: before remote-control key and locking-controller disconnection,, just entered for the 7th step if the central controlled processing unit (30) of locking-controller is received the operational order of locking-controller keyboard (18) input in the 5th step; If remote-control key and locking-controller just disconnect before the central controlled processing unit (30) of locking-controller is received locking-controller keyboard (18) operational order, the central controlled processing unit (14) of remote-control key and locking-controller central authorities' controlled processing units (30) are all got back to original state, and the 7th went on foot for 12 steps just no longer carries out;

The 7th step: the central controlled processing unit (30) of locking-controller receives the instruction of locking-controller keyboard (18) input in the 6th step, if the instruction that receives is " renewal " instruction, the central controlled processing unit (30) of locking-controller just empties locking-controller true random sequence memory cell (25), sends out " renewal " instruction by external data interface circuit (23) to remote-control key simultaneously; If the instruction that receives is " augmenting " instruction, the central controlled processing unit (30) of locking-controller just moves on to the zone that first address begins successively with data not used in the true random sequence memory cell (25), sends out " augmenting " instruction by external data interface circuit (23) to remote-control key simultaneously;

The 8th step: remote-control key central authorities' controlled processing unit (14) is if receive " renewal " instruction, and control key central authorities' controlled processing units (14) just empty remote-control key sequence storage area (10); If receive " augmenting " instruction, just that sequence storage area (10) are not used data move on to the zone that first address begins successively;

The 9th step: locking-controller central authorities' controlled processing units (30) control true random sequence generators (17) produce true random sequence;

The tenth step: the true random sequence that locking-controller central authorities controlled processing units (30) produced for the 9th step stores in the address that true random sequence memory cell (25) the blank parts foremost of locking-controller begins; The true random sequence that locking-controller central authorities controlled processing units (30) produced for the 9th step simultaneously is input in the central controlled processing unit (14) of remote-control key by the external data interface circuit (23) of locking-controller, and the central controlled processing unit (14) of remote-control key is stored in true random sequence in the address that the empty part foremost, true random sequence storage area (10) of remote-control key begins again;

The 12 step: locking-controller central authorities' controlled processing units (30) become the data rewriting of locking-controller true random sequence segment number memory cell (27) first address of true random sequence memory cell (25), and, get back to original state then to locking-controller display screen (20) output " success " information;

The 13 step: remote-control key central authorities' controlled processing units (14) are rewritten into the segment number of true random sequence segment number storage area (12) first address of sequence storage area (10); And, get back to original state then to remote-control key display screen output informations such as " successes of this process ";

The method of remote-control key transmission unlocking signal comprises during described unblanking: a kind of is to contain segment number information processing method in the unlocking signal, and another kind is not contain segment number information processing method in the unlocking signal;

Contain segment number information processing method during described unblanking in the unlocking signal, it may further comprise the steps:

The first step: control key central authorities' controlled processing units (14) read the segment number in the true random sequence segment number memory cell (12);

Second step: remote-control key central authorities' controlled processing units (14) read the pairing tract of resulting segment number in the first step from remote-control key true random sequence storage area (10);

The 3rd step: the tract of gained was formed Frame during key central authorities' controlled processing units (14) went on foot the segment number and second that the first step read;

The 4th step: remote-control key central authorities' controlled processing units (14) are rewritten into the segment number of remote-control key true random sequence segment number storage area (12): the obtained segment number of the first step adds the value after the numerical value of N, N=1,2,3.....L, L less than remote-control key true random sequence storage area (10) length;

The 5th step: the Frame that remote-control key central authorities' controlled processing units (14) obtained for the 3rd step outputs to modulator (2);

The 6th step: modulator (2) is modulated Frame, and the signal after the modulation is input to transmitter (1);

The 7th step: whether more than or equal to default segment number threshold value, choosing of segment number threshold value is satisfied: the segment number threshold value is the length less than locking-controller true random sequence memory cell by revised segment number of the 4th step in central controlled processing unit (14) judgement of remote-control key; If the 4th step, revised segment number was greater than default segment number threshold value, the central controlled processing unit (14) of remote-control key just shows " augmenting " on remote-control key display screen (3) or " " point out, the central controlled processing unit (14) of remote-control key is got back to original state then in renewal; If revised segment number of the 4th step is less than default segment number threshold value, the central controlled processing unit (14) of remote-control key is just directly got back to original state;

Do not contain segment number information processing method during described unblanking in the unlocking signal, it may further comprise the steps:

The first step: remote-control key central authorities' controlled processing units (14) read the segment number in the true random sequence segment number storage area (12);

Second step: remote-control key central authorities' controlled processing units (14) read the pairing tract of first step gained segment number from remote-control key true random sequence storage area (10);

The 3rd step: the tract that the central controlled processing unit (14) of remote-control key obtained for second step is formed Frame;

The 4th step: remote-control key central authorities controlled processing units (14) are rewritten into value after segment number that the first step is got adds numerical value of N with the segment number of remote-control key segment number memory cell (12), N=1,2,3.....L, L less than remote-control key true random sequence storage area (10) length;

The 5th step: remote-control key central authorities' controlled processing units (14) output to modulator (2) with the Frame in the 3rd step;

The 6th step: modulator (2) is modulated Frame, and the signal after the modulation is input to transmitter (1);

The 7th step: the central controlled processing unit (14) of remote-control key judges that whether revised segment number of the 4th step is more than or equal to default segment number threshold value, choosing of segment number threshold value is satisfied: the segment number threshold value is the length less than locking-controller true random sequence memory cell, if just going up at remote-control key display screen (3) greater than the central controlled processing unit (14) of default segment number threshold value remote-control key, revised segment number of the 4th step shows " augmenting " or " " point out, the central controlled processing unit (14) of remote-control key is got back to original state then in renewal; If revised segment number of the 4th step is less than default segment number threshold value, the central controlled processing unit (14) of remote-control key is just directly got back to original state;

The decoding method for unlocking of locking-controller also has two kinds during described unblanking, and a kind of is that unlocking signal contains segment number information processing method, and another kind is that unlocking signal does not have segment number information processing method;

The decoding that unlocking signal contains segment number information during described unblanking is made up of following steps with the processing method of unblanking:

The first step: the receiver of locking-controller (15) is delivered to demodulator (16) after receiving the signal that remote-control key sends;

Second step: the signal that demodulator (16) is sent receiver (15) carries out demodulation, obtains data signal, and the data signal that obtains is delivered to the central controlled processing unit (30) of locking-controller;

The 3rd step: locking-controller central authorities' controlled processing units (30) are read segment number and tract from receive data signal;

The 4th step: locking-controller central authorities' controlled processing units (30) read this lot number from the true random sequence segment number memory cell (27) of locking-controller;

The 5th step: the sequence segment number and the 4th that locking-controller central authorities' controlled processing units (30) read the 3rd step goes on foot this lot number that reads and compares, if this lot number that the 3rd sequence segment number that read of step read greater than the 4th step and both differences are less than M, M is a predefined threshold value, the M value is the positive integer less than the length of locking-controller true random sequence memory cell (25), and then locking-controller central authorities' controlled processing units (30) carried out for the 6th step; Otherwise locking-controller central authorities' controlled processing units (30) are got back to original state;

The 6th step: the central controlled processing unit (30) of locking-controller reads the pairing tract of sequence segment number that second step obtained from locking-controller true random sequence memory cell (25);

The 7th step: the tract and the 3rd that the central controlled processing unit (30) of locking-controller read for the 6th step goes on foot the tract that obtains and compares, if both are identical, just carried out for the 7th step, if both are inequality, the central controlled processing unit (30) of locking-controller is got back to original state;

The 8th step: the central controlled processing unit (30) of locking-controller sends " opening " instruction to switch lock body ON/OFF circuits for triggering (29);

The 9th step: the central controlled processing unit (30) of locking-controller is rewritten into the segment number of locking-controller true random sequence segment number memory cell (27): resulting segment number of the 3rd step adds the value after the numerical value of N, get back to original state then, N=1,2,3.....L L is less than the length of locking-controller true random sequence storage area (25);

Do not have the decoding of the segment number information processing method of unblanking to form during described unblanking in the unlocking signal by following steps:

The first step: the receiver of locking-controller (15) is delivered to demodulator (16) after receiving the signal that remote-control key sends;

Second step: the signal that demodulator (16) is sent receiver (15) carries out demodulation, obtains data signal, and data signal is delivered to the central controlled processing unit (30) of locking-controller;

The 3rd step: locking-controller central authorities' controlled processing units (30) are read tract from receive data signal;

The 4th step: locking-controller central authorities' controlled processing units (30) read this lot number from the true random sequence segment number memory cell (27) of locking-controller,

The 5th step: the central controlled processing unit (30) of locking-controller reads the pairing tract of this lot number from locking-controller true random sequence memory cell (25);

The 6th step: the central controlled processing unit (30) of locking-controller is provided with a counting variable K, and the initial value of counting variable K is 0;

The 7th step: the tract and the 5th that the central controlled processing unit (30) of locking-controller read for the 3rd step goes on foot the tract that is read and compares, if both are identical, just enters for the 11 step; If both are inequality, the central controlled processing unit (30) of locking-controller entered for the 8th step;

The 8th step: the central controlled processing unit (30) of locking-controller is rewritten into the value of locking-controller true random sequence segment number memory cell: the value behind this lot number addend value N that the 4th step obtained, and simultaneously counting variable is rewritten into: the value of current counting variable adds the value after 1, N=1,2,3 ..., L; L is less than the positive integer of the length of locking-controller true random sequence memory cell 25;

The 9th step: judge whether counting variable K surpasses the H value, and H is a counter gate limit value of presetting, and the H value is the positive integer less than the length of locking-controller true random sequence storage area (25);

The tenth step: if counting variable K does not surpass H, just repeated for the 6th step, if counting variable K surpasses H, the central controlled processing unit (30) of locking-controller is got back to original state;

The 11 step: the central controlled processing unit (30) of locking-controller sends " opening " instruction to lock body ON/OFF circuits for triggering (29);

The 12 step: the central controlled processing unit (30) of locking-controller is rewritten into the segment number of the current true random sequence segment number of locking-controller memory cell (27): the 3rd step gained segment number adds the value behind the N, the central controlled processing unit (30) of locking-controller is got back to original state then, N=1,2,3.....L, L less than remote-control key true random sequence memory cell (25) length.

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