CN2797547Y

CN2797547Y - Electronic puzzle lock device

Info

Publication number: CN2797547Y
Application number: CN 200520103067
Authority: CN
Inventors: 张七利; 王伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-06-20
Filing date: 2005-06-20
Publication date: 2006-07-19
Anticipated expiration: 2015-06-20

Abstract

The utility model discloses an electronic cipher lock device, which comprises a user's key and a cipher lock, wherein the user's key comprises a microprocessor, a memorizer, and a communication plug; the cipher lock comprises a power supply, a microprocessor, a memorizer, a communication socket and a mechanical mechanism. The electronic cipher lock of the utility model has the advantages of stochastically-generated electronic ciphers, good confidentiality, convenient operation and safety.

Description

A kind of electronic coded lock device

Technical field the utility model relates to a kind of utilization and generates the electronic coded lock device that password is unblanked at random.

Background technology existing password lock all mechanically or the code keypad mode encrypt and unblank, the coded lock that is to say mechanical system is by stirring combination disk, making the numeral on the combination disk identical with set password, and then open coded lock; The coded lock of code keypad mode is to compare a kind of mode of opening coded lock by keyboard input password and set password.These two kinds of method and apparatus exist following shortcoming: the one, need artificial memory's password.Often easily password is forgotten when the user begins, caused and to unblank.Especially for the people that an age is arranged slightly, this defective is just obvious especially.The 2nd, password easily is stolen or cracks, thereby causes valuables stolen.In order to remember password, the user often with the identical numeral of some feature of password setting Cheng Yuqi, perhaps is recorded in password on the book, and perhaps password can be write down secretly by the onlooker in the process of unblanking, so just easily password is cracked or is stolen, thereby cause the valuables loss.The 3rd, it is cumbersome to operate.Before the unlocking coded lock of mechanical system, combination disk repeatedly need be turn-taked, identical until its several bit digital with set password.When unblanking, need key that lock is opened.After unblanking, also combination disk to be turn-taked, its numeral is upset.Needing before the unlocking coded lock of cryptographic key disc type not only needs memory cipher by keyboard input password, needs button on keyboard simultaneously, divulges a secret easily.

Utility model content technical problem to be solved in the utility model is to propose the generation at random of a kind of electronic cipher, good confidentiality, easy to operate, safe and reliable electronic coded lock device.

For solving the problems of the technologies described above, a kind of electronic coded lock device of the utility model comprises user's key and coded lock, described user's key comprises microprocessor, memory and communication plug, and described coded lock comprises power supply, microprocessor, memory, communication socket and mechanical mechanism.

Above-mentioned a kind of electronic coded lock device, it also includes fingerprint recognition system, and this fingerprint recognition system comprises finger print data collector, fingerprint comparison system and electromechanical control system, and described electromechanical control system links to each other with the mechanical mechanism of described coded lock.

Above-mentioned a kind of electronic coded lock device, it also includes the management key, and this management key comprises microprocessor, memory and communication plug.

Above-mentioned a kind of electronic coded lock device, described coded lock is provided with indicator lamp and button.

The utility model is owing to adopted technique scheme, during use, to manage key and user's key earlier and insert in the password fever writes, 32 bytes that will generate at random by the computer password that dispatches from the factory writes in the memory (EERAM) of management key and user's key by the password fever writes.Then, will manage key and insert coded lock under coded lock is powered normal situation, the password that will dispatch from the factory writes in the coded lock.Like this, the user inserts user's key in this coded lock and can unblank after 2 seconds.When unblanking, can utilize the unlatching of fingerprint recognition system control lock earlier.When the uncontrollable coded lock of fingerprint recognition system is opened, user's key is inserted in the coded lock, key and coded lock electrification reset also carry out initialization operation to inner each register.Coded lock sends shakes hands code to user's key, as the code of shaking hands is correct, and then the key program reads 32 byte unlocking ciphers in the EERAM and it is decrypted, and then is sent to coded lock with this 32 byte unlocking cipher after to the encryption of 16 byte unlock commands.The coded lock program is decrypted after reading the 32 byte unlocking ciphers of being deposited in user's key EERAM according to the order flag bit that receives, and obtains unlock command after with the 32 byte unlocking ciphers of deciphering out the 16 byte enciphered datas that receive being decrypted.Whether the unlock command after relatively deciphering then is correct, as correctly then carrying out unlock operation.The coded lock program obtains 32 new byte pseudorandom ciphers after converting with former 32 byte unlocking ciphers, this new password is carried out being sent to user's key behind the cryptographic calculation and depositing in the EERAM, and the control mechanical mechanism is unblanked.Key is decrypted computing to it after receiving 32 new byte unlocking ciphers, again it is carried out depositing in the EERAM behind the cryptographic calculation.For the first time in the unlock operation, the 32 byte unlocking ciphers that the lock program is used are to convert the data that obtain as unlocking cipher by the password that dispatches from the factory, and the new unlocking cipher that produces after the success of promptly unblanking is based on all that the password that dispatches from the factory produces.Because the utility model adopts 128 (16 bytes * 8) password unlockings, cipher random generates, carry out after the password unlocking success at every turn, to regenerate 128 new unlocking ciphers in order to unblank next time, and when password transmission and preservation, all password has been carried out 128 bit encryptions, can more effectively prevent that other people from duplicating cipher key and conjecture password.Thereby, the utlity model has good confidentiality, easy to operate, safe and reliable advantage.System of fingerprints and password unlocking system are combined, can when unblanking, adopt the fingerprint comparison method to unblank earlier, under the situation that fingerprint comparison can't be unblanked, re-use Electronics Cryptographic Keys and unblank, so just more safe and reliable.

Description of drawings is described in further detail the utility model below in conjunction with drawings and embodiments.

Fig. 1 is the structured flowchart of the utility model electronic password lock;

Fig. 2 is the workflow schematic diagram of the utility model electronic code unlocking method;

Fig. 3 is the circuit block diagram of the utility model electronic password lock password unlocking part;

Fig. 4 is the structural representation of the utility model electronic password lock mechanical mechanism.

The specific embodiment as shown in Figure 1, electronic coded lock device comprises user's key 1, management key 2, coded lock 3 and fingerprint recognition system 4, user's key 1 comprises microprocessor CPU, memory EERAM, indicator lamp 10 and I2C communication plug (USB interface) with management key 2, and coded lock 3 comprises microprocessor CPU, memory EERAM, button and loudspeaker 9, I2C communication socket (USB interface) and mechanical mechanism 8.Fingerprint recognition system 4 comprises finger print data collector 5, fingerprint comparison system 6 and electromechanical control system 7, and electromechanical control system 7 links to each other with the mechanical mechanism 8 of coded lock 3.Fingerprint recognition system 4 is identical with technology commonly used at present, repeats no more herein.

As shown in Figure 2, the password unlocking method comprises the steps: 1, will manage key and user's key inserts in the password fever writes, and 32 bytes that will generate at random by the computer password that dispatches from the factory writes among the EERAM of management key and user's key by the password fever writes.2, will manage key under coded lock is powered normal situation and insert coded lock, after 3 seconds, coded lock sends " toot---toot! Pout! " 1 long 2 short sound, show that the password that dispatches from the factory successfully writes in the coded lock.Like this, user's key is inserted in this coded lock can unblank after 2 seconds.When 3, unblanking, utilize the unlatching of fingerprint recognition program control lock earlier, promptly gather finger print information, the finger print data of finger print information and storage is compared, utilize the mechanical mechanism of electromechanical control system control lock to open then by the finger print data collector.4, when utilizing the uncontrollable coded lock of fingerprint recognition system to open, under coded lock is powered normal situation, user's key is inserted in the coded lock, key and coded lock electrification reset also carry out initialization operation to inner each register.5, coded lock sends and to shake hands code to user's key, as the code of shaking hands is correct, and then the key program reads 32 byte unlocking ciphers in the EERAM and it is decrypted, and then is sent to coded lock with this 32 byte unlocking cipher after to the encryption of 16 byte unlock commands.6, the coded lock program is decrypted after reading the 32 byte unlocking ciphers of being deposited in user's key EERAM according to the order flag bit that receives, and obtains unlock command after with the 32 byte unlocking ciphers of deciphering out the 16 byte enciphered datas that receive being decrypted.Whether the unlock command after relatively deciphering then is correct, as correctly then carrying out unlock operation.7, the coded lock program obtains 32 new byte pseudorandom ciphers after converting with former 32 byte unlocking ciphers, this new password is carried out being sent to user's key behind the cryptographic calculation and depositing in the EERAM, and the control mechanical mechanism is unblanked.8, key is decrypted computing to it after receiving 32 new byte unlocking ciphers, again it is carried out depositing in the EERAM behind the cryptographic calculation.For the first time in the unlock operation, the 32 byte unlocking ciphers that the lock program is used are to convert the data that obtain as unlocking cipher by the password that dispatches from the factory, and the new unlocking cipher that produces after the success of promptly unblanking is based on all that the password that dispatches from the factory produces.

As shown in Figure 3, left part I is the circuit block diagram of cipher key, and it adopts the AT89C2051 integrated circuit as microprocessor, and the X5045 memory is connected with light emitting diode as EERAM.Right side part II is the circuit block diagram of coded lock, and it adopts the AT89S52 integrated circuit as microprocessor, and the X5045 memory is connected with button and loudspeaker as EERAM.Both encrypted messages through compare errorless after, unblank through overdrive circuit control motor.

As shown in Figure 4, the mechanical mechanism of coded lock 3 comprises motor 11, travelling gear 12, driving rack 13, snap close 14 and locking bar 15, and snap close 14 is fixed on the password casing 19, which is provided with lockhole 20.Travelling gear 12 is fixedly linked with the output shaft of motor 11, and driving rack 13 and travelling gear 12 are meshing with each other, and locking bar 15 is fixedly connected on the both sides of driving rack 13, and it and snap close 14 cooperatively interact.Offer chute 16 on the driving rack 13, the fixed supported slab 17 that is installed on the password casing 19 is provided with positioning screw 18, and positioning screw 18 is arranged in the chute 16, makes driving rack 13 not meeting off normal up and down in moving process.Motor 11 is controlled startup respectively by the electromechanical control system 7 and the coded lock 3 of fingerprint recognition system 4.

Claims

1, a kind of electronic coded lock device, comprise coded lock, it is characterized in that it also comprises user's key, described user's key comprises microprocessor, memory and communication plug, and described coded lock comprises power supply, microprocessor, memory, communication socket and mechanical mechanism.

2, a kind of electronic coded lock device as claimed in claim 1 is characterized in that, it also includes the management key, and this management key comprises microprocessor, memory and communication plug.

3, a kind of electronic coded lock device as claimed in claim 1 or 2, it is characterized in that, it also includes fingerprint recognition system, this fingerprint recognition system comprises finger print data collector, fingerprint comparison system and electromechanical control system, and described electromechanical control system links to each other with the mechanical mechanism of described coded lock.

4, a kind of electronic coded lock device as claimed in claim 1 or 2 is characterized in that, is respectively equipped with indicator lamp and button on described user's key and the coded lock.