CN1769637A - Electric key and electric lock device and realization method thereof - Google Patents
Electric key and electric lock device and realization method thereof Download PDFInfo
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- CN1769637A CN1769637A CN 200410087146 CN200410087146A CN1769637A CN 1769637 A CN1769637 A CN 1769637A CN 200410087146 CN200410087146 CN 200410087146 CN 200410087146 A CN200410087146 A CN 200410087146A CN 1769637 A CN1769637 A CN 1769637A
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Abstract
The invention discloses an electronic key and electronic lock, wherein the electronic key contains key storage mode, cryptogram disposal mode and wireless transceiving mode; the electronic lock contains cryptogram checking mode, wireless transceiving mode, random sequence generation mode and cryptogram disposal mode. The unlocking method comprises the following steps: receiving the unlocking order from the electronic key; generation the random sequence; sending the encrypted random sequence to the electronic key; deciphering the unlocking cryptogram according to the stored key cryptogram; sending the deciphered random sequence to the electronic lock; comparing the received random sequence with the original random sequence; opening the lock if consistent; rejecting to open if inconsistent.
Description
Technical field
The present invention relates to the electron key technology, be meant a kind of electron key and electrical lock apparatus and its implementation especially.
Background technology
The wireless electron key is a kind of by launching wireless signal as unblocking key, realizes the device of opening automobile, door and safety cabinet etc.
In existing electron key and electrical lock apparatus; the signal that electron key will carry unlocking cipher is transmitted to electrical lock apparatus by radio transmitter; electronic lock is after receiving unlocking cipher; usually can verify the unlocking cipher that receives; judge whether this user is legal; if legal, then control electronic lock switch and open, otherwise refusal unblanked.
Yet, because electron key and electronic lock are separating components, utilize in the process of electron key unlocking electronic lock the user, the wireless signal that carries unlocking cipher must arrive electronic lock by wireless propagation path, wireless propagation path is a kind of transmission environment of opening, therefore in the process of the transmission of wireless signals of user's unlocking cipher, can be by record that any other disabled user steals, in case the disabled user steals unlocking cipher, then can copy the user's that steals unlocking cipher signal at an easy rate by electronic equipment, thereby further open this user's electronic lock, realize the purpose that it is committed theft, the validated user of electronic lock is sustained losses severely.
Summary of the invention
In view of this, first purpose of the present invention provides a kind of electron key and electrical lock apparatus and its implementation, the problem that the unlocking cipher of solution electron key is stolen easily.
Second purpose of the present invention provides the method based on the unlocking electronic lock of said system.
In order to reach above-mentioned first purpose, the invention provides a kind of electron key and electrical lock apparatus, electron key in this device and electronic lock comprise radio receiving transmitting module respectively, this radio receiving transmitting module is used to realize the intercommunication mutually between electron key and the electronic lock, electron key comprises key storage block, electronic lock comprises the ciphertext authentication module, electronic lock further comprises: random sequence generation module and ciphertext processing module, wherein: the random sequence generation module, be used for after receiving unlock command, generating random sequence, and this random sequence sent to the ciphertext processing module and the ciphertext authentication module of electronic lock;
The ciphertext processing module is used for the random sequence that receives is encrypted, and the ciphertext that generates is sent to the ciphertext processing module of electron key;
Electron key further comprises: the ciphertext processing module, be used for the unblocking key of reading pre-stored in the key storage block of electron key, utilize this key that the ciphertext that receives is decrypted, the random sequence that will obtain after will deciphering then sends to the ciphertext authentication module of electronic lock;
Ciphertext authentication module in the electronic lock is further used for: relatively from the random sequence of electron key with whether consistent from the random sequence of electronic lock random sequence generation module, if unanimity then unlocking electronic lock, otherwise refusal is unblanked.
In said apparatus, described electron key further comprises an authentication module, be used for according to the user's input information that receives, checking user's legitimacy, and control the unlatching of ciphertext processing module in the electron key and send unlock command to the random sequence generation module of electronic lock according to the checking result.
In said apparatus, the radio receiving transmitting module of described electron key also is used for the radio receiving transmitting module emission handshake to electronic lock;
The radio receiving transmitting module of described electronic lock also is used for after receiving handshake, to the radio receiving transmitting module transmitting response signal of electron key; The radio receiving transmitting module of described electron key sends unlock command to the random sequence generation module of electronic lock after the response signal that receives from the radio receiving transmitting module of electronic lock.
In said apparatus, the radio receiving transmitting module of electron key also is used for the electron key sign of electron key under the ciphertext processing module of electronic lock sends,
Described electronic lock further comprises: the identity key memory module is used for storing the corresponding unblocking key of superencipher algorithm with electron key;
The ciphertext processing module of described electron key also is used for the random sequence that obtains after the deciphering is carried out superencipher by the superencipher algorithm that sets in advance, and the secondary ciphertext that generates is sent to the ciphertext processing module of electronic lock;
The ciphertext processing module of described electronic lock, also be used for according to the electron key sign that receives, from described identity key memory module, read with the corresponding unblocking key of superencipher algorithm, be random sequence according to this and the corresponding unblocking key of superencipher algorithm with the secondary decrypt ciphertext that receives.
In order to realize above-mentioned second purpose, the invention provides method based on the unlocking electronic lock of said apparatus, this method comprises the steps:
After a, electron key receive user's input information, send unlock command to electronic lock, after electronic lock receives this unlock command, generate random sequence, and according to the AES that sets in advance this random sequence is encrypted, the ciphertext that generates is sent to electron key;
B, electron key read and the corresponding unblocking key of AES described in the electronic lock, utilize this unblocking key that the decrypt ciphertext that receives is random sequence, then this random sequence is sent to electronic lock, electronic lock judges whether the random sequence of this random sequence and electronic lock self generation that receives is consistent, if, unlocking electronic lock then, otherwise refusal is unblanked.
In said method, described step a further comprises: after electron key receives user's input information, judge whether this user is legal, if then send unlock command to electronic lock, otherwise refusal is unblanked.
In said method, described step a further comprises: after electron key receives user's input information, send handshake to electronic lock, after electronic lock receives this handshake, send response signal to electron key, after electron key receives this response signal, send unlock command to electronic lock.
In said method, described step a further comprises: after electron key receives user's input information, send the electron key sign of this electron key to electronic lock, electronic lock according to this electron key sign read self preserve with the corresponding unblocking key of superencipher algorithm;
In step b, described electron key sends to electronic lock with random sequence and comprises: electron key carries out superencipher by the superencipher algorithm that is provided with to described random sequence, generate the secondary ciphertext, and this secondary ciphertext sent to electronic lock, electronic lock according to read with the corresponding unblocking key of superencipher algorithm, be random sequence with the secondary decrypt ciphertext that receives.
In sum, the present invention is by being provided with random sequence generation module and ciphertext processing module in electronic lock, after making that the random sequence generation module of electronic lock receives unlock command, generate random sequence, and the random sequence that generates encrypted by the ciphertext processing module of electronic lock, then ciphertext is sent to electron key, ciphertext processing module by electron key is decrypted the ciphertext that receives according to the unblocking key that is stored in the key storage block in advance, the random sequence that will obtain after will deciphering at last sends to the ciphertext authentication module of electronic lock, ciphertext authentication module by electronic lock compares random sequence and the original random sequence from electron key that receives again, if the two unanimity, unlocking electronic lock then, otherwise refusal is unblanked.From said process as can be seen, the random sequence that comprises random sequence and encryption by the wireless environment information transmitted, for random sequence, because it generates at random, all different at every turn, therefore, even stolen and record by other people, also be difficult to use in the electronic lock of opening the user, and for the random sequence of encrypting, other people have only by decode encrypting random sequence knows that decipherment algorithm illegally unblanks, and this method is unusual difficulty for existing encryption system, and possibility of success is very little.Therefore the safety that can improve electronic lock system to a great extent by the present invention.
Description of drawings
Fig. 1 is the electron key and the electrical lock apparatus structure chart of the embodiment of the invention one.
Fig. 2 is the method flow diagram of the embodiment of the invention one.
The method flow diagram of Fig. 3 embodiment of the invention two.
The method flow diagram of Fig. 4 embodiment of the invention three.
Fig. 5 is the electron key and the electrical lock apparatus structure chart of the embodiment of the invention four.
Fig. 6 is the method flow diagram of the embodiment of the invention four.
The specific embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
Main thought of the present invention: electron key sends unlock command to electronic lock, the random sequence generation module of electronic lock is after receiving this unlock command, generate the random sequence of certain-length, and this random sequence is sent to the ciphertext processing module and the ciphertext authentication module of electronic lock, the ciphertext processing module of electronic lock is encrypted random sequence according to the AES that sets in advance, and the ciphertext that generates is sent to the ciphertext processing module of electron key, the ciphertext processing module reading pre-stored of electron key in key storage block with the corresponding unblocking key of above-mentioned AES, and the ciphertext that receives is decrypted according to this unblocking key, random sequence after will deciphering then sends to the ciphertext authentication module of electronic lock, random sequence and original random sequence that last ciphertext authentication module relatively receives from electron key, if the two unanimity, unlocking electronic lock then, otherwise refusal is unblanked.
Below by specific embodiment one in detail technical scheme of the present invention is described in detail.
As shown in Figure 1, the electron key of present embodiment mainly comprises: key storage block, ciphertext processing module and radio receiving transmitting module; Electronic lock comprises: ciphertext processing module, random sequence generation module, ciphertext authentication module and radio receiving transmitting module.
In electron key:
Key storage block is used for storing AES with electronic lock to corresponding unblocking key.
The ciphertext processing module, be used for reading the unblocking key of the key storage block that is stored in electron key, radio receiving transmitting module by electron key receives the ciphertext from electronic lock, utilize unblocking key to be decrypted to it, the random sequence after the deciphering is sent to electronic lock by the radio receiving transmitting module of electron key again.The AES that is provided with in the unblocking key in the above-mentioned key storage block that is stored in electron key and the ciphertext processing module of electronic lock is corresponding.
Radio receiving transmitting module is used for the transmitting/receiving wireless signal, and this wireless signal comprises: unlock command, random sequence and ciphertext.
In electronic lock:
The random sequence generation module is used for radio receiving transmitting module by electronic lock and receives unlock command from electron key, generates random sequence, then the random sequence that generates is sent to the ciphertext processing module and the ciphertext authentication module of electronic lock.
The ciphertext processing module receives the random sequence from the random sequence generation module, and it is encrypted, and the ciphertext that generates is sent to electron key through the radio receiving transmitting module of electronic lock.
The ciphertext authentication module is used for random sequence and the original random sequence through deciphering of comparison from electron key, controls the opening and closing of electronic lock according to result relatively.
Figure 2 shows that the method flow diagram that passes through the electron key unlocking electronic lock of present embodiment, this method specifically comprises the steps:
Step 201: start after the ciphertext processing module of electron key is received user input signal, simultaneously the radio receiving transmitting module of electron key is after receiving user's triggering signal, and the radio receiving transmitting module by electron key sends unlock command to electronic lock.
Step 202: after the radio receiving transmitting module of the random sequence generation module of electronic lock by electronic lock receives unlock command from electron key, generate random sequence, then the random sequence that generates is sent to the ciphertext processing module and the ciphertext authentication module of electronic lock.
Step 203: the ciphertext processing module of electronic lock is encrypted the random sequence that receives according to the AES that sets in advance, and then the ciphertext that the generates radio receiving transmitting module by electronic lock is sent to electron key.
Step 204: after the radio receiving transmitting module of the ciphertext processing module of electron key by electron key receives ciphertext from electronic lock, read the AES that is provided with in the ciphertext processing module that is stored in this module with electronic lock to corresponding unblocking key, and be random sequence according to this unblocking key with this decrypt ciphertext, then the radio receiving transmitting module of this random sequence by electron key sent to electronic lock.
Step 205: the ciphertext authentication module of electronic lock passes through the random sequence of the radio receiving transmitting module reception of electronic lock from electron key, and itself and original random sequence compared, judge whether the two is consistent, if, then control the unlocking electronic lock-switch, otherwise refusal is unblanked.
Below by specific embodiment two in detail technical scheme of the present invention is described in detail.
In the present embodiment, electron key also further comprises authentication module except comprising ciphertext processing module, key storage block and radio receiving transmitting module shown in Figure 1.Electronic lock is then identical with the electronic lock described in the foregoing description one.
Authentication module in the electron key of present embodiment, be used to receive the authentication information of user's input, the legitimacy of identifying user identity, and control that ciphertext processing module in the electron key is opened and radio receiving transmitting module by electron key sends unlock command to electronic lock according to the checking result.
All the other modules in the electron key and the foregoing description are a kind of described identical, repeat no more herein.
Based on the device of above-mentioned present embodiment, the method flow diagram that utilizes described electron key unlocking electronic lock is described below, as shown in Figure 3, this method specifically comprises the steps:
Step 301: the authentication module of electron key reads the authentication information of user's input, judges whether this user is legal, if then execution in step 302, otherwise refusal is unblanked.
Step 302: the authentication module of electron key is controlled the ciphertext processing module of unlocking electronic key, and sends unlock command by the radio receiving transmitting module of electron key to electronic lock.
Below by specific embodiment three in detail technical scheme of the present invention is described in detail.
Consider owing to the process by the electron key unlocking electronic lock of the present invention is that electron key and electronic lock carry out mutual process, therefore in order to confirm the other side's state, need before carrying out unlock operation, electron key set up wireless communication link by a handshake procedure.The electron key of present embodiment and the composition of electronic lock, not only as above-mentioned embodiment two described, electron key has increased an authentication module on the basis of Fig. 1, and has increased a handshake procedure in electron key, promptly
Radio receiving transmitting module except the emission and reception that are used for wireless signal, also is used for sending handshake to electronic lock after receiving the instruction of shaking hands, simultaneously after the response signal that receives from electronic lock, to electronic lock transmission unlock command.
Radio receiving transmitting module in the electronic lock except the emission and reception that are used for wireless signal, also is used for after the handshake that receives from electron key, sends response signal to electron key.
Based on the device of above-mentioned present embodiment, the method flow diagram that utilizes described electron key unlocking electronic lock is described below, as shown in Figure 4, this method specifically comprises the steps:
Step 401: the authentication module of electron key reads the authentication information of user's input, judges whether this user is legal, if then execution in step 402, otherwise refusal is unblanked.
Step 402: the ciphertext processing module of the authentication module control electron key of electron key is opened, and send the instruction of shaking hands to the radio receiving transmitting module of electron key, the radio receiving transmitting module of electron key sends handshake to electronic lock after receiving the instruction of shaking hands.
Step 403: after the radio receiving transmitting module of electronic lock receives handshake from electron key, send response signal to electron key.
Step 404: after the radio receiving transmitting module of electron key receives response signal from electronic lock, send unlock command to electronic lock.
Step 405～step 408 is identical with the step 202～step 205 described in the foregoing description one, repeats no more herein.
Below by specific embodiment four in detail technical scheme of the present invention is described in detail.
If consider further to strengthen safe precaution measure, then can carry out superencipher by the random sequence of electron key after to deciphering, the ciphertext processing module that then signal of this superencipher is sent to electronic lock is decrypted.As shown in Figure 5, the electron key of present embodiment and electrical lock apparatus and the foregoing description three are described basic identical, just in electronic lock, except comprising the ciphertext processing module described in the foregoing description three, random sequence generation module, ciphertext authentication module and radio receiving transmitting module, also comprise key storage block.
In electron key,
Authentication module is used to receive the authentication information of user's input, and the checking user validation is controlled the unlatching of electron key ciphertext processing module and sent the instruction of shaking hands to the radio receiving transmitting module of electron key according to the checking result.
Key storage block is used for storing and the corresponding unblocking key of the AES of electronic lock.
The ciphertext processing module, be used for the unblocking key of reading pre-stored in the key storage block of electron key, radio receiving transmitting module by electron key receives the ciphertext from electronic lock, it is decrypted, and the random sequence after will deciphering carries out superencipher according to the superencipher algorithm that sets in advance, and then the secondary ciphertext that the generates radio receiving transmitting module by electron key sent to electronic lock.
Radio receiving transmitting module except the emission and reception that are used for wireless signal, also is used for sending the electron key sign that lock is stated electron key to electronic lock.
In electronic lock,
The identity key memory module is used for storing the corresponding unblocking key of superencipher algorithm with electron key.
The random sequence generation module is used to receive the unlock command from electron key, generates random sequence, random sequence is sent to the ciphertext processing module and the ciphertext authentication module of electronic lock.
The ciphertext processing module is used to receive the handshake from electron key, reading and saving in the identity key memory module with handshake in electron key identify corresponding unblocking key, and preserve this unblocking key; Reception is encrypted it from the random sequence of random sequence generation module, and the ciphertext that generates is sent to electron key through the radio receiving transmitting module of electronic lock; And after the secondary ciphertext that receives from the ciphertext processing module of electron key, according to the corresponding unblocking key of preserving of superencipher algorithm with in the electron key it is decrypted, the random sequence that will obtain after will deciphering then sends to the ciphertext authentication module of electronic lock.
The ciphertext authentication module is used for random sequence and the original random sequence of comparison from electron key, and controls the opening and closing of electronic lock according to comparative result.
Radio receiving transmitting module, be used for the emission and the reception of wireless signal, and after the handshake that contains the electron key sign that receives from electron key, radio receiving transmitting module to electron key returns response signal, and the sign of the electron key in the handshake that receives is sent to the ciphertext processing module of electronic lock.
The present embodiment method flow specifically comprises the steps: as shown in Figure 6
Step 601: the authentication module of electron key reads the authentication information of user's input, judges whether this user is legal, if then execution in step 602, otherwise refusal is unblanked.
Step 602: the ciphertext processing module of the authentication module control unlocking electronic key of electron key, and send the instruction of shaking hands to the radio receiving transmitting module of electron key, after the radio receiving transmitting module of electron key receives the instruction of shaking hands, contain the handshake of this electron key sign to the radio receiving transmitting module transmission of electronic lock.
Step 603: after the radio receiving transmitting module of electronic lock receives the handshake that contains this electron key sign from electron key, radio receiving transmitting module to electron key sends response signal, and the electron key in the handshake that receives sign is sent to the ciphertext processing module of electronic lock, the ciphertext processing module reads to be stored in advance in the identity key memory module according to the electron key sign that receives and identifies corresponding unblocking key with this electron key, and the unblocking key that reads is stored in the ciphertext processing module of electronic lock.
Step 604: after the radio receiving transmitting module of electron key received response signal from electronic lock, the radio receiving transmitting module by electronic lock sent unlock command to electronic lock.
Step 605: after the random sequence generation module of electronic lock receives unlock command, generate random sequence, then random sequence is sent to the ciphertext processing module and the ciphertext authentication module of electronic lock.
Step 606: the ciphertext processing module of electronic lock is encrypted the random sequence that receives according to the AES that is provided with, and the ciphertext that the generates radio receiving transmitting module by electronic lock is sent to electron key.
Step 607: after the radio receiving transmitting module of the ciphertext processing module of electron key by electron key receives ciphertext, the corresponding unblocking key of AES that is provided with in the reading pre-stored ciphertext processing module in the key storage block of electron key and electronic lock, and be random sequence with this decrypt ciphertext according to this unblocking key, then random sequence is carried out superencipher by the superencipher algorithm that is provided with again, generate the secondary ciphertext, then the radio receiving transmitting module of this secondary ciphertext by electron key sent to electronic lock.
Step 608: after the radio receiving transmitting module of the ciphertext processing module of electronic lock by electronic lock receives secondary ciphertext from electron key, according to the corresponding unblocking key of superencipher algorithm that is provided with in that in above-mentioned steps 603, preserve and ciphertext processing module electron key, this secondary ciphertext is decrypted, and the random sequence that will obtain after will deciphering sends to the ciphertext authentication module of electronic lock.
Step 609: the ciphertext authentication module of electronic lock compares random sequence and the original random sequence that receives, and judges whether the two is consistent, if then control the unlocking electronic lock-switch, otherwise refusal is unblanked.
In a word, the above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (8)
1, a kind of electron key and electrical lock apparatus, electron key and electronic lock comprise radio receiving transmitting module respectively, and this radio receiving transmitting module is used to realize the intercommunication mutually between electron key and the electronic lock, and electron key comprises key storage block, electronic lock comprises the ciphertext authentication module, it is characterized in that:
Electronic lock further comprises: random sequence generation module and ciphertext processing module, wherein:
The random sequence generation module is used for generating random sequence after receiving unlock command, and this random sequence is sent to the ciphertext processing module and the ciphertext authentication module of electronic lock;
The ciphertext processing module is used for the random sequence that receives is encrypted, and the ciphertext that generates is sent to the ciphertext processing module of electron key;
Electron key further comprises:
The ciphertext processing module is used for the unblocking key of reading pre-stored in the key storage block of electron key, utilizes this key that the ciphertext that receives is decrypted, and the random sequence that will obtain after will deciphering then sends to the ciphertext authentication module of electronic lock;
Ciphertext authentication module in the electronic lock is further used for: relatively from the random sequence of electron key with whether consistent from the random sequence of electronic lock random sequence generation module, if unanimity then unlocking electronic lock, otherwise refusal is unblanked.
2, device according to claim 1, it is characterized in that: described electron key further comprises an authentication module, be used for according to the user's input information that receives, checking user's legitimacy, and control the unlatching of ciphertext processing module in the electron key and send unlock command to the random sequence generation module of electronic lock according to the checking result.
3, device according to claim 1 is characterized in that: the radio receiving transmitting module of described electron key also is used for the radio receiving transmitting module emission handshake to electronic lock;
The radio receiving transmitting module of described electronic lock also is used for after receiving handshake, to the radio receiving transmitting module transmitting response signal of electron key; The radio receiving transmitting module of described electron key sends unlock command to the random sequence generation module of electronic lock after the response signal that receives from the radio receiving transmitting module of electronic lock.
4, device according to claim 1 is characterized in that: the radio receiving transmitting module of electron key also is used for the electron key sign of electron key under the ciphertext processing module of electronic lock sends,
Described electronic lock further comprises: the identity key memory module is used for storing the corresponding unblocking key of superencipher algorithm with electron key;
The ciphertext processing module of described electron key also is used for the random sequence that obtains after the deciphering is carried out superencipher by the superencipher algorithm that sets in advance, and the secondary ciphertext that generates is sent to the ciphertext processing module of electronic lock;
The ciphertext processing module of described electronic lock, also be used for according to the electron key sign that receives, from described identity key memory module, read with the corresponding unblocking key of superencipher algorithm, be random sequence according to this and the corresponding unblocking key of superencipher algorithm with the secondary decrypt ciphertext that receives.
5, a kind of implementation method of the unlocking electronic lock based on said apparatus comprises the steps:
After a, electron key receive user's input information, send unlock command to electronic lock, after electronic lock receives this unlock command, generate random sequence, and according to the AES that sets in advance this random sequence is encrypted, the ciphertext that generates is sent to electron key;
B, electron key read and the corresponding unblocking key of AES described in the electronic lock, utilize this unblocking key that the decrypt ciphertext that receives is random sequence, then this random sequence is sent to electronic lock, electronic lock judges whether the random sequence of this random sequence and electronic lock self generation that receives is consistent, if, unlocking electronic lock then, otherwise refusal is unblanked.
6, method according to claim 5 is characterized in that: described step a further comprises: after electron key receives user's input information, judge whether this user is legal, if then send unlock command to electronic lock, otherwise refusal is unblanked.
7, method according to claim 5, it is characterized in that: described step a further comprises: after electron key receives user's input information, send handshake to electronic lock, after electronic lock receives this handshake, send response signal to electron key, after electron key receives this response signal, send unlock command to electronic lock.
8, method according to claim 5, it is characterized in that: described step a further comprises: after electron key receives user's input information, send the electron key sign of this electron key to electronic lock, electronic lock according to this electron key sign read self preserve with the corresponding unblocking key of superencipher algorithm;
In step b, described electron key sends to electronic lock with random sequence and comprises: electron key carries out superencipher by the superencipher algorithm that is provided with to described random sequence, generate the secondary ciphertext, and this secondary ciphertext sent to electronic lock, electronic lock according to read with the corresponding unblocking key of superencipher algorithm, be random sequence with the secondary decrypt ciphertext that receives.
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| CNB2004100871460A CN100387798C (en) | 2004-11-01 | 2004-11-01 | Electric key and electric lock device and realization method thereof |
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| CNB2004100871460A CN100387798C (en) | 2004-11-01 | 2004-11-01 | Electric key and electric lock device and realization method thereof |
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