CN105303651A - Bluetooth based two-way communication automatic locking system and method - Google Patents
Bluetooth based two-way communication automatic locking system and method Download PDFInfo
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- CN105303651A CN105303651A CN201410366225.9A CN201410366225A CN105303651A CN 105303651 A CN105303651 A CN 105303651A CN 201410366225 A CN201410366225 A CN 201410366225A CN 105303651 A CN105303651 A CN 105303651A
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Abstract
The invention discloses a Bluetooth based two-way communication automatic locking system and method. The Bluetooth based two-way communication automatic locking system comprises a mechanical structure, an execution module, a controller module, a storage module, a clock module, an LED indicating module, a sound module, a button module, a Bluetooth module and a key. The Bluetooth based two-way communication automatic locking system is characterized in that in the process of adding the key to an electronic lock, unlocking passwords, lock ID data, key ID data and a Bluetooth address are recorded; the RSSI value is used as the unlocking opportunity judgment basis, and when the key is close to the electronic lock, the lock is automatically unlocked; in the unlocking process, the electronic lock and the key are in two-way communication match, the data can be transmitted only after the match of the electronic lock and the key, and the condition that the information is read out by equipment is prevented; in the data transmission process, the use time and the random number are encrypted, and the data is changed in real time. Compared with the prior art, the RSSI value is used to judge the approach of the key, the system is simpler and more efficient, two-way match and recognition in the unlocking process is realized, the transmitted information use time and random number are encrypted, the information cannot be reused even monitored, and the system is safer and more reliable.
Description
Technical field
The present invention relates to electric lockset technical field, particularly relate to a kind of both-way communication automatic locking system based on bluetooth and method thereof.
Background technology
In order to remove the troublesome operation of slotting key unlocking, a lot of electronic lock control system all passes through wireless transmission control information.Along with the continuous renewal of Bluetooth technology is regenerated, power consumption control reaches gratifying degree, and the universal of smart mobile phone also makes Bluetooth mobile terminal easily available, and therefore multiple Related product, has also appearred in the megatrend be combined in order to future of electronic lock and Bluetooth technology on the market.But the characteristic of bluetooth determines, its transmission data are easily intercepted by other communication apparatus, and information of unblanking easily is replicated, and this litigant of copying even does not know, harm is more far more than mechanical key.Patent of invention CN201410087190.5 discloses a kind of Bluetooth electronic automatic locking system and method for switching thereof, use Bluetooth address as basis of characterization, solve the problem identifying coupling, but for equipment, Bluetooth address not can not be forged, and therefore the method can not stop this problem completely, has set up sensing unit in its system simultaneously, make complex system, add the power consumption of system.
Summary of the invention
Object of the present invention solves the above-mentioned problems in the prior art exactly, there is provided a kind of both-way communication automatic locking system based on bluetooth and method thereof, effectively can solve existing Bluetooth electronic lock communication process and easily be stolen and copy, security is low, system architecture is complicated, the problem of complex operation.
To achieve these goals, technical solution of the present invention is: based on both-way communication automatic locking system and the method thereof of bluetooth, it is characterized in that: be made up of electronic lock and key, described electronic lock comprises physical construction, execution module, controller module, memory module, clock module, LED indicating module, sound module, key-press module and bluetooth module; Described key comprises the smart mobile phone with bluetooth module; Described execution module, memory module, clock module, LED indicating module, sound module and bluetooth module are all connected with controller module, and physical construction is connected with execution module; Its key is: described controller module carries out information interaction by described bluetooth module and key, and according to the difference of interactive step, controller module has three kinds of duties, is respectively holding state, arranges state and unlocking condition;
The interactive step of described holding state is as follows:
Step S11: described standby information at interval of T1 lock ID data genaration standby information by the machine, and is broadcasted away by bluetooth module by described controller module;
The interactive step of the described state that arranges is as follows:
Step S21: Bluetooth function and the application software of opening key, key returns connectivity request message after receiving the standby information that electronic lock sends;
Step S22: after described electronic lock receives the connectivity request message that key sends, controller module can detect the state of key-press module, if now the connection button of key-press module is pressed, then controller module sends login password solicited message by bluetooth module to key, if connect button not to be pressed, then do not respond request;
Step S23: after described key receives the login password solicited message of electronic lock, prompting user inputs login password, and after user inputs login password, described login password generating cipher information is sent to electronic lock by key;
Step S24: after described electronic lock receives encrypted message, judge it, if login password is correct, then returns the information of logining successfully, otherwise returns login failure information;
Step S25: after described key receives described password correct information, if user selects this key to add in electronic lock, then key can point out user to input one group of unlocking cipher, and unlocking cipher can not be consistent with login password, after user has inputted unlocking cipher, key sends and adds solicited message to electronic lock, and the content of described interpolation solicited message comprises the machine Bluetooth address and unlocking cipher;
Step S26: after described electronic lock receives and adds solicited message, stochastic generation key ID data, the key ID data of the Bluetooth address added in solicited message and unlocking cipher and stochastic generation are stored in a storage module respectively, return one simultaneously and add successful information to key, the content of described interpolation successful information comprises lock ID data and key ID data;
Lock ID data wherein and key ID data are preserved in a database by step S27: after described key receives described interpolation successful information, complete interpolation operation;
The interactive step of described unlocking condition is as follows:
Step: 31: after described key receives described standby information, judge the RSSI value of standby information, when RSSI value is greater than the enabling distance intensity P1 of setting, represent that the distance of key and lock is enough near, judge that this people unblanks to be intended to, read standby information content;
Step S32: described key is retrieved after receiving the lock ID data inside standby information in a database, if this lock ID data exist, then return unlock instruction A, described unlock instruction A includes key Bluetooth address information;
Step S33: after described electronic lock receives unlock instruction A, check its Bluetooth address, if this Bluetooth address adds, then return unlock instruction B, unlocking cipher when key adds is included in described unlock instruction B, if do not added, then LED indicating module sends out a warning, and signal is unblanked unsuccessfully;
Step S34: after described key receives unlock instruction B, the correctness of inspection unlocking cipher, if described unlocking cipher is correct, then return unlock instruction C, described unlock instruction C includes key ID data and the current time of electronic lock stochastic generation in adding procedure, if unlocking cipher mistake, then LED indicating module sends out a warning, and signal is unblanked unsuccessfully;
Step S35: after described electronic lock receives unlock instruction C, the correctness of checking key ID data, if correct, then control mechanical interface by execution module and perform unlock operation, LED indicating module green light, sound module sends unblanks to remind, the current time simultaneously read in described unlock instruction C checks the clock module of electronic lock again, if described key ID error in data, then LED indicating module sends out a warning, and signal is unblanked unsuccessfully.
Described standby information, connectivity request message, login password solicited message, encrypted message, interpolation solicited message, interpolation successful information, unlock instruction A, unlock instruction B and unlock instruction C are as transmission information, all encrypt at transmitting terminal, and be decrypted by receiving end, when described electronic lock sends information to described key, described electronic lock is transmitting terminal, key is receiving end, when described key sends information to described electronic lock, described key is transmitting terminal, and electronic lock is receiving end;
Described encrypting step is as follows:
Step S41: described transmission information is broken up restructuring by certain rule, and insert useless data, form multiple information segment;
Step S42: using the current time of described transmitting terminal as random number seed, generates multiple random number;
Step S43: multiple described random number is filled in described transmission information, and is index with random number, search random number encryption algorithm table, use the information segment that corresponding cryptographic algorithm enciphered message is different, and add check number at signal transmission end;
Step S44: the current time of the transmitting terminal described in acquisition, sues for peace to described current time, obtains an one digit number, as index, search algorithm corresponding in time cryptographic algorithm table, with this algorithm, described transmission information is encrypted, obtain enciphered message, complete cryptographic operation;
Described decryption step is as follows:
Step S51: the current time of the receiving end described in acquisition, sues for peace to described current time, obtains an one digit number, as index, searches algorithm corresponding in time decipherment algorithm table, is decrypted with this algorithm to described enciphered message;
Step S52: the correctness of the enciphered message end check number described in verification, if verify unsuccessfully, then described current time is increased by one minute, and repeat step S51, if verify failure again, then by described current time minus fifteen clock, and repeat step S51, when twice verification is all failed, be then judged as that this enciphered data is invalid, stop deciphering;
Step S53: obtain the random number of filling in enciphered message, and as index, search the decipherment algorithm in random nnrber decryption algorithm table, uses the information segment of the decipherment algorithm of response to response to be decrypted;
Step S54: the gibberish in the enciphered message described in removal, and information segment is recombinated, obtain transmission information, complete decryption oprerations.
Described random number encryption algorithm table have recorded a series of cryptographic algorithm, the cryptographic algorithm that different indexes is corresponding different, described random nnrber decryption algorithm table have recorded a series of decipherment algorithm, the decipherment algorithm of cryptographic algorithm in random number encryption algorithm table under corresponding same index value.
The a series of cryptographic algorithm of described time cryptographic algorithm table record, the cryptographic algorithm that different indexes is corresponding different, the a series of decipherment algorithm of described time decipherment algorithm table record, the decipherment algorithm of cryptographic algorithm in corresponding same index value lower time cryptographic algorithm table.
Described standby information sends and is spaced apart 0.5 second.
Described enabling distance intensity is-60dbm, and this intensity represents that the distance of electronics lock & key is at about one meter.
Described key-press module is located at electronics and locks a door inner side, only has people in door could by button.
Beneficial effect of the present invention is: the distance judging key and electronic lock with the intensity of bluetooth sweep signal, when key is close to electronic lock, automatically performs unlock operation, is simple and easy to use, and system is without extras, low in energy consumption, allows powered battery; Both-way communication bidirectional recognition, key cannot copy; Full detail uses random number and time to be encrypted, and transferring content changes in real time, even if copy whole communication process, the time one, after losing efficacy immediately, cannot steal, comprehensive guarantee safety.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present invention.
Fig. 2 is the interactive step figure arranging state.
Fig. 3 is the interactive step figure of unlocking condition.
Fig. 4 is encrypting step figure of the present invention.
Fig. 5 is decryption step figure of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
As shown in Figure 1, the present invention is made up of physical construction 1, execution module 2, controller module 3, memory module 4, clock module 5, LED indicating module 6, sound module 7, key-press module 8, bluetooth module 9 and key 10.Execution module 2, memory module 4, clock module 5, LED indicating module 6, sound module 7, key-press module 8 are all connected with controller module 3 with bluetooth module 9, physical construction 1 is connected with execution module 2, controller module 3 can control physical construction 1 by execution module 2 to carry out unblanking and upper latching operation, clock module 5 provides current time can to controller module 3, and allow controller module 3 to reset the time, memory module 4 is for storing data, when ensureing system reboot, retain original service data, guarantee that system can not be initialised.
The interactive step arranging state of the present invention is as shown in Figure 2:
Step S21: Bluetooth function and this software of application of opening key 10, key 10 returns connectivity request message after receiving the standby information that electronic lock sends;
Step S22: after electronic lock receives the connectivity request message that key 10 sends, controller module 3 can detect the state of key-press module 8, if now the connection button of key-press module 8 is pressed, then controller module 2 sends login password solicited message by bluetooth module 9 pairs of keys 10, if connect button not to be pressed, then do not respond request;
Step S23: after key 10 receives the login password solicited message of electronic lock, prompting user inputs login password, and after user inputs login password, login password generating cipher information is sent to electronic lock by key 10;
Step S24: after electronic lock receives encrypted message, judges it, if login password is correct, then returns the information of logining successfully, otherwise returns login failure information;
Step S25: after key 10 receives password correct information, if user selects this key to add in electronic lock, then key can point out user to input one group of unlocking cipher, and unlocking cipher can not be consistent with login password, after user has inputted unlocking cipher, key 10 sends and adds solicited message to electronic lock, and the content of adding solicited message comprises the machine Bluetooth address and unlocking cipher.
Step S26: after electronic lock receives and adds solicited message, stochastic generation key ID data, the key ID data of the Bluetooth address added in solicited message and unlocking cipher and stochastic generation are stored in a storage module respectively, return one simultaneously and add successful information to key 10, the content of adding successful information comprises lock ID data and key ID data;
Lock ID data wherein and key ID data are preserved in a database, are completed interpolation key operated by step S27: after key 10 receives and adds successful information.
The interactive step of unlocking condition of the present invention is as shown in Figure 3:
Step: 31: after key 10 receives standby information, judge the RSSI value of standby information, when RSSI value is greater than the enabling distance intensity-60dbm of setting, represent that the distance of key 10 and electronic lock is enough near, judge that this people unblanks to be intended to, read standby information content;
Step S32: key 10 is retrieved after receiving the lock ID data inside standby information in a database, if this lock ID data exist, then return unlock instruction A, unlock instruction A includes key Bluetooth address information;
Step S33: after electronic lock receives unlock instruction A, checks its Bluetooth address, if this Bluetooth address adds, then return unlock instruction B, include unlocking cipher when key 10 adds in unlock instruction B, if do not added, then LED indicating module 6 sends out a warning, and signal is unblanked unsuccessfully;
Step S34: after key receives unlock instruction B, the correctness of inspection unlocking cipher, if unlocking cipher is correct, then return unlock instruction C, unlock instruction C includes key ID data and the current time of electronic lock stochastic generation in adding procedure, if unlocking cipher mistake, then LED indicating module 6 sends out a warning, and signal is unblanked unsuccessfully;
Step S35: after electronic lock receives unlock instruction C, the correctness of checking key ID data, if correct, then control mechanical interface by execution module and perform unlock operation, LED indicating module 6 green light, sound module sends unblanks to remind, the current time read in unlock instruction C checks the clock module of electronic lock again simultaneously, if key ID error in data, then LED indicating module 6 sends out a warning, and signal is unblanked unsuccessfully.
Encrypting step of the present invention is as shown in Figure 4:
Step S41: transmission information is broken up restructuring by certain rule, and insert useless data, form multiple information segment;
Step S42: using the current time of transmitting terminal as random number seed, generates multiple random number;
Step S43: multiple random number is filled in transmission information, and be index with random number, search random number encryption algorithm table, use the information segment that corresponding cryptographic algorithm enciphered message is different, and add check number at signal transmission end;
Step S44: the current time obtaining transmitting terminal, sues for peace to current time, obtains an one digit number, as index, search algorithm corresponding in time cryptographic algorithm table, with this algorithm, transmission information is encrypted, obtain enciphered message, complete cryptographic operation;
Decryption step of the present invention is as shown in Figure 5:
Step S51: the current time obtaining receiving end, sues for peace to current time, obtains an one digit number, as index, searches algorithm corresponding in time decipherment algorithm table, is decrypted with this algorithm to enciphered message;
Step S52: the correctness of verification enciphered message end check number, if verify unsuccessfully, then current time is increased by one minute, and repeat step S51, if verify failure again, then by current time minus fifteen clock, and repeat step S51, when twice verification is all failed, be then judged as that this enciphered data is invalid, stop deciphering.
Step S53: obtain the random number of filling in enciphered message, and as index, search the decipherment algorithm in random nnrber decryption algorithm table, uses the information segment of the decipherment algorithm of response to response to be decrypted;
Step S54: remove the gibberish in enciphered message, and information segment is recombinated, obtain transmission information, complete decryption oprerations.
Claims (4)
1. based on both-way communication automatic locking system and the method thereof of bluetooth, it is characterized in that: be made up of electronic lock and key, described electronic lock comprises physical construction, execution module, controller module, memory module, clock module, LED indicating module, sound module, key-press module and bluetooth module; Described execution module, memory module, clock module, LED indicating module, sound module, key-press module and bluetooth module are all connected with controller module, and physical construction is connected with execution module; Its key is: described controller module carries out information interaction by described bluetooth module and key, and according to the difference of interactive step, controller module has three kinds of duties, is respectively holding state, arranges state and unlocking condition;
The interactive step of the described state that arranges is as follows:
Step S21: Bluetooth function and the application software of opening key, key returns connectivity request message after receiving the standby information that electronic lock sends;
Step S22: after described electronic lock receives the connectivity request message that key sends, controller module can detect the state of key-press module, if now the connection button of key-press module is pressed, then controller module sends login password solicited message by bluetooth module to key, if connect button not to be pressed, then do not respond request;
Step S23: after described key receives the login password solicited message of electronic lock, prompting user inputs login password, and after user inputs login password, described login password generating cipher information is sent to electronic lock by key;
Step S24: after described electronic lock receives encrypted message, judge it, if login password is correct, then returns the information of logining successfully, otherwise returns login failure information;
Step S25: after described key receives described password correct information, if user selects this key to add in electronic lock, then key can point out user to input one group of unlocking cipher, and unlocking cipher can not be consistent with login password, after user has inputted unlocking cipher, key sends and adds solicited message to electronic lock, and the content of described interpolation solicited message comprises the machine Bluetooth address and unlocking cipher;
Step S26: after described electronic lock receives and adds solicited message, stochastic generation key ID data, by the key ID data storing of the Bluetooth address that adds in solicited message and unlocking cipher and stochastic generation in a storage module, return one simultaneously and add successful information to key, the content of described interpolation successful information comprises lock ID data and key ID data;
Lock ID data wherein and key ID data are preserved in a database, are completed interpolation key operated by step S27: after described key receives described interpolation successful information;
The interactive step of described unlocking condition is as follows:
Step: 31: after described key receives described standby information, judge the RSSI value of standby information, when RSSI value is greater than the enabling distance intensity-60dbm of setting, represent that the distance of key and lock is enough near, judge that this people unblanks to be intended to, read standby information content;
Step S32: described key is retrieved after receiving the lock ID data inside standby information in a database, if this lock ID data exist, then return unlock instruction A, described unlock instruction A includes key Bluetooth address information;
Step S33: after described electronic lock receives unlock instruction A, check its Bluetooth address, if this Bluetooth address adds, then return unlock instruction B, unlocking cipher when key adds is included in described unlock instruction B, if do not added, then LED indicating module sends out a warning, and signal is unblanked unsuccessfully;
Step S34: after described key receives unlock instruction B, the correctness of inspection unlocking cipher, if described unlocking cipher is correct, then return unlock instruction C, described unlock instruction C includes key ID data and the current time of electronic lock stochastic generation in adding procedure, if unlocking cipher mistake, then LED indicating module sends out a warning, and signal is unblanked unsuccessfully;
Step S35: after described electronic lock receives unlock instruction C, the correctness of checking key ID data, if correct, then control mechanical interface by execution module and perform unlock operation, LED indicating module green light, sound module sends unblanks to remind, the current time simultaneously read in described unlock instruction C checks the clock module of electronic lock again, if described key ID error in data, then LED indicating module sends out a warning, and signal is unblanked unsuccessfully.
2. the both-way communication automatic locking system based on bluetooth according to claim 1 and method thereof, it is characterized in that: described standby information, connectivity request message, login password solicited message, encrypted message, add solicited message, add successful information, unlock instruction A, unlock instruction B and unlock instruction C is as transmission information, all encrypt at transmitting terminal, and be decrypted by receiving end, when described electronic lock sends information to described key, described electronic lock is transmitting terminal, key is receiving end, when described key sends information to described electronic lock, described key is transmitting terminal, electronic lock is receiving end,
Described encrypting step is as follows:
Step S41: described transmission information is broken up restructuring by certain rule, and insert useless data, form multiple information segment;
Step S42: using the current time of described transmitting terminal as random number seed, generates multiple random number;
Step S43: multiple described random number is filled in described transmission information, and is index with random number, search random number encryption algorithm table, use the information segment that corresponding cryptographic algorithm enciphered message is different, and add check number at signal transmission end;
Step S44: the current time of the transmitting terminal described in acquisition, sues for peace to described current time, obtains an one digit number, as index, search algorithm corresponding in time cryptographic algorithm table, with this algorithm, described transmission information is encrypted, obtain enciphered message, complete cryptographic operation;
Described decryption step is as follows:
Step S51: the current time of the receiving end described in acquisition, sues for peace to described current time, obtains an one digit number, as index, searches algorithm corresponding in time decipherment algorithm table, is decrypted with this algorithm to described enciphered message;
Step S52: the correctness of the enciphered message end check number described in verification, if verify unsuccessfully, then described current time is increased by one minute, and repeat step S51, if verify failure again, then by described current time minus fifteen clock, and repeat step S51, when twice verification is all failed, be then judged as that this enciphered data is invalid, stop deciphering;
Step S53: obtain the random number of filling in enciphered message, and as index, search the decipherment algorithm in random nnrber decryption algorithm table, uses the information segment of the decipherment algorithm of response to response to be decrypted;
Step S54: the gibberish in the enciphered message described in removal, and information segment is recombinated, obtain transmission information, complete decryption oprerations.
3. the both-way communication automatic locking system based on bluetooth according to claim 2 and method thereof, it is characterized in that: described random number encryption algorithm table have recorded a series of cryptographic algorithm, the cryptographic algorithm that different indexes is corresponding different, described random nnrber decryption algorithm table have recorded a series of decipherment algorithm, the decipherment algorithm of cryptographic algorithm in random number encryption algorithm table under corresponding same index value.
4. the both-way communication automatic locking system based on bluetooth according to claim 2 and method thereof, it is characterized in that: a series of cryptographic algorithm of described time cryptographic algorithm table record, the cryptographic algorithm that different indexes is corresponding different, the a series of decipherment algorithm of described time decipherment algorithm table record, the decipherment algorithm of cryptographic algorithm in corresponding same index value lower time cryptographic algorithm table.
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