CN105989643A - Communication encryption method used for electronic lock, electronic lock apparatus and system thereof - Google Patents
Communication encryption method used for electronic lock, electronic lock apparatus and system thereof Download PDFInfo
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- CN105989643A CN105989643A CN201510055924.6A CN201510055924A CN105989643A CN 105989643 A CN105989643 A CN 105989643A CN 201510055924 A CN201510055924 A CN 201510055924A CN 105989643 A CN105989643 A CN 105989643A
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Abstract
The invention discloses a communication encryption method used for an electronic lock, an electronic lock apparatus and a system thereof. The method comprises the following steps: a temporary session code is generated and preserved by the electronic lock; the temporary session code is sent to an electrical key by the electronic lock; an encryption key is generated with a preset mode by the electrical key according to the temporary session code and a shared encryption key, the encryption key is used for verifying the information to-be-transmitted to a cryptograph; the cryptograph is sent to the electronic lock by the electronic key; a decryption key is generated with the same preset mode through the electronic lock according to the temporary session code and the shared encryption key, and the decryption key is used for decrypting the cryptograph. Through a scheme of the invention, the temporary session code is introduced during an encryption process, because the temporary session code has random characteristic and cannot be predicted, a latent attacker cannot realize a cheating purpose through replay attack, so that the method, the apparatus and the system have higher security.
Description
Technical field
The present invention relates to electronic lock field, be specifically related to a kind of communication encrypting method for electronic lock, electrical lock apparatus and system.
Background technology
Currently, electronic lock is widely used in security technology area.The information of the outside transmission of electronic lock reception is verified, controls mechanical switch execution unlocking action according to the result or refusal unblanks to ask.
Electronic lock typically supports the use with multiple electron keys.In this case, the information that electronic lock and electron key are needed by respective communication unit clearing house.In these information, some is sensitive, the identity information of such as Authority Verification.Obtaining to not allow potential assailant be monitored by external lead wire, traditional way is first to be encrypted identity information with a kind of AES, then ciphertext is passed to electronic lock.After electronic lock receives ciphertext, ciphertext is decrypted, remakes back-end processing.This encryption policy ensure that the safety of information to a certain extent.But, this mode cannot avoid the Replay Attack to electronic lock.
Summary of the invention
In view of the above problems, it is proposed that the present invention is to provide a kind of and overcoming the problems referred to above or solve the communication encrypting method for electronic lock of the problems referred to above, electrical lock apparatus and system at least in part.
According to an aspect of the invention, it is provided a kind of communication encrypting method for electronic lock, wherein, preserving shared key in described electronic lock, method includes:
Electronic lock produces and preserves interim conversation code；
Described interim conversation code is sent to electron key by electronic lock；
Electron key generates encryption key according to described interim conversation code and shared key with predetermined manner, and utilizing described encryption key is ciphertext by Information Authentication to be passed；
Described ciphertext is sent to described electronic lock by electron key；
Electronic lock generates decruption key according to described interim conversation code and shared key with described predetermined manner, and utilizes described decruption key to be decrypted described ciphertext.
According to a further aspect in the invention, it is provided that a kind of electrical lock apparatus, preserving shared key in described electrical lock apparatus, this device includes:
First security module, is suitable to generate interim conversation code, generates decruption key according to the shared key of described interim conversation code and preservation, and the ciphertext utilizing described decruption key to send electron key is decrypted；
First memory module, is suitable to preserve described interim conversation code and described shared key；
First communication interface, is suitable to send described interim conversation code to electron key and receive the ciphertext that electron key sends.
According to another aspect of the present invention, it is provided that a kind of electronic key device, preserving shared key in this electronic key device, device includes:
Second security module, is suitable to the shared key according to the interim conversation code received and preservation and generates encryption key, and utilize described encryption key that information to be passed is encrypted as ciphertext；
Second memory module, is suitable to preserve described interim conversation code and described shared key；
Second communication interface, is suitable to receive the interim conversation code of electronic lock transmission and send described ciphertext to described electronic lock.
According to another aspect of the present invention, it is provided that a kind of electronic lock system, including above-mentioned electrical lock apparatus and electronic key device, wherein, electrical lock apparatus and electronic key device are preserved identical shared key.
According to the communication encrypting method for electronic lock of the present invention, prestore in electronic lock and electron key shared key, and when needing to transmit ciphertext, electronic lock generates interim conversation code, and this interim conversation code is sent to electron key；Afterwards, electron key generates encryption key according to described interim conversation code and shared key in a predetermined manner, with this encryption key, information to be passed encryption being formed ciphertext, electronic lock generates decruption key in the same way, and the ciphertext sending electron key is verified.Corresponding action is performed according to the result.By this programme, information to be passed will be encrypted with different keys every time, even if assailant has cracked encryption key in primary information transmits, also cannot pretend validated user, further increase the safety of electronic lock.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention, and can be practiced according to the content of description, and in order to above and other objects of the present invention, feature and advantage can be become apparent, below especially exemplified by the detailed description of the invention of the present invention.
Accompanying drawing explanation
By reading the detailed description of hereafter preferred implementation, various other advantage and benefit those of ordinary skill in the art be will be clear from understanding.Accompanying drawing is only used for illustrating the purpose of preferred implementation, and is not considered as limitation of the present invention.And in whole accompanying drawing, it is denoted by the same reference numerals identical parts.In the accompanying drawings:
Fig. 1 a shows according to an embodiment of the invention for the flow chart of communication encrypting method of electronic lock；
Fig. 1 b shows the schematic diagram of the encryption and decryption processes that the present invention relates to；
Fig. 2 shows in accordance with another embodiment of the present invention for the flow chart of communication encrypting method of electronic lock；
Fig. 3 shows the structured flowchart of electrical lock apparatus according to an embodiment of the invention；
Fig. 4 shows the structured flowchart of electronic key device according to an embodiment of the invention；
Fig. 5 shows the structured flowchart of electronic lock system according to an embodiment of the invention.
Detailed description of the invention
It is more fully described the exemplary embodiment of the disclosure below with reference to accompanying drawings.Although accompanying drawing showing the exemplary embodiment of the disclosure, it being understood, however, that may be realized in various forms the disclosure and should not limited by embodiments set forth here.On the contrary, it is provided that these embodiments are able to be best understood from the disclosure, and complete for the scope of the present disclosure can be conveyed to those skilled in the art.
Fig. 1 shows according to an embodiment of the invention for the flow chart of communication encrypting method of electronic lock, as it is shown in figure 1, method comprises the steps:
Step S110, electronic lock produces and preserves interim conversation code.
Specifically, electronic lock, when electron key contacts or be close, is triggered to produce interim conversation code and be saved in the RAM etc. within electronic lock storing in device by electron key.Wherein, the switch notice electronic lock that electron key can trigger on electronic lock by the way of physical interface is with directly contact produces interim conversation code, or by wireless noncontact and electronic lock communication, such as, notify that electronic lock produces interim conversation code in the mode such as radio frequency or bluetooth.This is not limited by the present invention.
Specifically, electronic lock can generate this interim conversation code, the such as random number algorithm by prestoring the most in several ways and generate random sequence etc..As example, in the present embodiment, electronic lock generates interim conversation code by gathering electronic lock internal noise, inherently has randomness due to noise, and the interim conversation code therefore every time produced is different, has random characteristic.This mode need not complicated algorithm and configuration, more fast.Similarly, it is also possible to generate interim conversation code according to ambient parameter, or connecting inner noise and ambient parameter generate interim conversation code.
Step S120, the interim conversation code of generation is sent to electron key by electronic lock.
Prestoring identical shared key in electronic lock and electron key, such as, this shared key is a character string.
Communication encrypting method for electronic lock of the prior art, the ciphertext that electron key sends every time uses same shared key to be encrypted.Potential attacker, such as hacker, ciphertext electron key may transmitted to electronic lock is recorded, and by technological means such as Replay Attacks, camouflage has the behavior of the electron key of unlocking authority, and the ciphertext of record is reset to electronic lock, and deception electronic lock is unblanked.
A kind of method providing new communication encryption in the present invention, introduces a random interim conversation code as interference source in encryption key.The effective time of this interim conversation code is limited, after its effective time, even if assailant uses the means of Replay Attack, as encryption key there occurs that change cannot cheat electronic lock.
Fig. 1 b shows the schematic diagram of the encryption and decryption processes that the present invention relates to, and interim conversation code is sent to electron key by communication channel by electronic lock.After electron key receives interim conversation code, generate an encryption key according to the shared key preserved and this interim conversation code.Utilizing this encryption key is ciphertext by plain text encryption.Here, it is exactly in plain text information to be passed between electron key and electronic lock, such as identity information to be verified, or the safety information arranged when installing, such as need preset shared key.Ciphertext is sent to electronic lock by communication channel by electron key, as once unblanking, lock or arranging request.
In an optional embodiment of the present embodiment, electron key generates encryption key after the interim conversation code of reception is directly appended to shared key.Certainly, electron key can generate according to shared key and interim conversation code by other means, to realize introducing the purpose in random disturbances source, such as, carries out the XOR etc. of shared key and interim conversation code.This is not limited by the present invention.
Step S130, electronic lock generates decruption key according to interim conversation code and shared key with predetermined manner.
The method using symmetric cryptography in the present embodiment, i.e. uses identical key to encrypt and decrypt.It is to say, decruption key should be identical with encryption key.Therefore, in this step, electronic lock should generate decruption key in the way of identical with electron key.
Corresponding to the example in step S120, in this step, after interim conversation code is also directly appended to the shared key preserved by electronic lock, decruption key is generated.
Step S140, electronic lock utilizes the decruption key generated to be decrypted the ciphertext received, if successful decryption performs step S150, otherwise performs step S170.
As a example by request of unblanking, if electronic lock is deciphered unsuccessfully, then the decruption key that the encryption key of the electron key initiating request of unblanking is current from electronic lock is different.This request is from the camouflage of potential attacker.At this moment, the request of unblanking of refusal electron key.
Step S150, the identity information obtaining deciphering is verified, if being verified, performing step S160, otherwise performing step S170.
After successful decryption, the identity information in electronic lock checking ciphertext, judge whether the electron key initiating request has the authority unblanked according to identity information, if having authority, the mechanical part controlled in step S160 in electronic lock performs unlocking action；Otherwise, refusal request.
Step S160, controls electronic lock and performs unlocking action.
Step S170, refusal unblanks to ask.
Fig. 2 shows that the method relates to electronic lock and electron key, as in figure 2 it is shown, the method comprises the steps: in accordance with another embodiment of the present invention for the flow chart of Information Authentication method of electronic lock
Step S210, electronic lock produces and preserves interim conversation code.
Specifically, electronic lock can generate this interim conversation code, the such as random number algorithm by prestoring the most in several ways and generate random sequence etc..As example, in the present embodiment, electronic lock generates interim conversation code by gathering electronic lock internal noise, inherently has randomness due to noise, and the interim conversation code therefore every time produced is different, has random characteristic.This mode need not complicated algorithm and configuration, more fast.Similarly, it is also possible to generate interim conversation code according to ambient parameter, or connecting inner noise and ambient parameter generate interim conversation code.
Step S220, interim conversation code is sent to electron key by electronic lock.
Step S230, electron key generates encryption key according to interim conversation code and shared key with predetermined manner.
In an optional embodiment of the present embodiment, electron key generates encryption key after the interim conversation code of reception is directly appended to shared key.Certainly, electron key can generate according to shared key and interim conversation code by other means, to realize introducing the purpose in random disturbances source, such as, carries out the XOR etc. of shared key and interim conversation code.This is not limited by the present invention.
Step S240, electron key utilizes encryption key that information to be passed is encrypted as ciphertext.
Step S250, ciphertext is sent to electronic lock by electron key.
Step S260, electronic lock generates decruption key in an identical manner according to interim conversation code and shared key.
Step S270, electronic lock utilizes decruption key to be decrypted ciphertext.
It should be noted that the order between step S260 and step S220-S250 is not done strict restriction by the present invention, electronic lock can also be generated as decryption key before receiving ciphertext.
The communication encrypting method for electronic lock that the above embodiment of the present invention provides, random interim conversation code is introduced in Information Authentication, electron key generates encryption key according to this interim conversation code and shared key, on the other hand, electronic lock generates decruption key in an identical manner, owing to this interim conversation code has stochastic behaviour, each encryption key different and cannot be predicted, therefore, even if potential attacker obtains shared key, or also cannot realize cheating the purpose that electronic lock is unblanked by Replay Attack, there is higher safety.
Fig. 3 shows the structured flowchart of electrical lock apparatus according to an embodiment of the invention, as it is shown on figure 3, device includes:
First security module 310, is suitable to generate interim conversation code, generates decruption key according to the shared key of interim conversation code and preservation, and the ciphertext utilizing decruption key to send electron key is decrypted.
Alternatively, the first security module 310 is further adapted for: according to the internal noise information of electronic lock and or ambient parameter generate random sequence as interim conversation code.
Alternatively, the first security module 310 is further adapted for: generate decruption key after interim conversation code is appended to shared key.
First memory module 320, is suitable to preserve interim conversation code and shared key.
First communication interface 330, is suitable to send interim conversation code to electron key and receive the ciphertext that electron key sends.
Fig. 4 shows that the structured flowchart of electronic key device according to an embodiment of the invention, electronic key device and electrical lock apparatus preserve identical shared key, and as shown in Figure 4, described electronic key device includes:
Second security module 410, is suitable to the shared key according to the interim conversation code received and preservation and generates encryption key, and to utilize encryption key be ciphertext by Information Authentication to be passed.
Second memory module 420, is suitable to preserve interim conversation code and described shared key.
Second communication interface 430, is suitable to receive the interim conversation code of electronic lock transmission and send ciphertext to electronic lock.
Alternatively, the second security module 410 is further adapted for: generate encryption key after interim conversation code is appended to shared key.
Fig. 5 shows the structured flowchart of electronic lock system according to an embodiment of the invention, as it is shown in figure 5, this electronic lock system includes:
Electrical lock apparatus 300 described in foregoing embodiments and electronic key device 400, wherein, preserve identical shared key in electrical lock apparatus 300 and electronic key device 400.
Specifically, a kind of exemplary work process of above-mentioned electronic lock system is as follows: the first security module 310 in electrical lock apparatus 300 generates interim conversation code and is saved in the first memory module 320, by the first communication interface 330, interim conversation code being sent to electronic key device 400, electronic key device 400 receives this interim conversation code by the second communication interface 430 simultaneously.Afterwards, the second security module 410 generates encryption key according to the shared key preserved in interim conversation code and the second memory module 420, will be sent to electrical lock apparatus 300 by the ciphertext of this encryption keys by the second communication interface 430.After electrical lock apparatus 300 receives ciphertext, the first security module 310 generates decruption key according to shared key and interim conversation code in an identical manner, and is decrypted ciphertext.
Electrical lock apparatus according to the above embodiment of the present invention, electronic key device and electronic lock system, random interim conversation code is introduced in Information Authentication, electronic key device generates encryption key according to this interim conversation code and shared key, and on the other hand, electrical lock apparatus generates decruption key in an identical manner, owing to this interim conversation code has stochastic behaviour and unpredictable, therefore, potential attacker cannot realize the purpose of deception by Replay Attack, has higher safety.
Algorithm and display are not intrinsic to any certain computer, virtual system or miscellaneous equipment relevant provided herein.Various general-purpose systems can also be used together with based on teaching in this.As described above, construct the structure required by this kind of system to be apparent from.Additionally, the present invention is also not for any certain programmed language.It is understood that, it is possible to use various programming languages realize the content of invention described herein, and the description done language-specific above is the preferred forms in order to disclose the present invention.
In description mentioned herein, illustrate a large amount of detail.It is to be appreciated, however, that embodiments of the invention can be put into practice in the case of not having these details.In some instances, it is not shown specifically known method, structure and technology, in order to do not obscure the understanding of this description.
Claims (9)
1. the communication encrypting method for electronic lock, it is characterised in that including:
Electronic lock produces and preserves interim conversation code；
Described interim conversation code is sent to electron key by electronic lock, and wherein, electronic lock and electron key preserve identical shared key；
Electron key generates encryption key according to described interim conversation code and described shared key with predetermined manner, utilizes described encryption key that information to be passed is encrypted as ciphertext；
Described ciphertext is sent to described electronic lock by electron key；
Electronic lock generates decruption key according to described interim conversation code and shared key with described predetermined manner, and utilizes described decruption key to be decrypted described ciphertext.
Method the most according to claim 1, it is characterised in that described electronic lock produces and preserves interim conversation code and is further:
Internal noise information and/or ambient parameter according to electronic lock generate random sequence as described interim conversation code.
Method the most according to claim 1 and 2, it is characterised in that described electron key generates encryption key according to described interim conversation code and shared key with predetermined manner and is further:
Described encryption key is generated after described interim conversation code is spliced to described shared key；
The decruption key that the utilization of described electronic lock generates with described predetermined manner according to described shared key and described interim conversation code is further:
Described decruption key is generated after described interim conversation code is appended to described shared key.
4. an electrical lock apparatus, preserves shared key in described electrical lock apparatus, it is characterised in that described electrical lock apparatus includes:
First security module, is suitable to generate interim conversation code, generates decruption key according to the shared key of described interim conversation code and preservation, and the ciphertext utilizing described decruption key to send electron key is decrypted；
First memory module, is suitable to preserve described interim conversation code and described shared key；
First communication interface, is suitable to send described interim conversation code to electron key and receive the ciphertext that electron key sends.
Electrical lock apparatus the most according to claim 4, it is characterised in that described first security module is further adapted for: internal noise information and/or ambient parameter according to electronic lock generate random sequence as described interim conversation code.
6. according to the electrical lock apparatus described in claim 4 or 5, it is characterised in that described first security module is further adapted for: generate described decruption key after described interim conversation code is appended to described shared key.
7. an electronic key device, described electronic key device preserves shared key, it is characterised in that described electronic key device includes:
Second security module, is suitable to the shared key according to the interim conversation code received and preservation and generates encryption key, and utilize described encryption key that information to be passed is encrypted as ciphertext；
Second memory module, is suitable to preserve described interim conversation code and described shared key；
Second communication interface, is suitable to receive the interim conversation code of electronic lock transmission and send described ciphertext to described electronic lock.
Device the most according to claim 7, it is characterised in that described second security module is further adapted for: generate described encryption key after described interim conversation code is appended to described shared key.
9. an electronic lock system, it is characterised in that including the electrical lock apparatus described in any one of claim 4-6, and the electronic key device described in claim 7 or 8, wherein, described electrical lock apparatus and described electronic key device preserve identical shared key.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510055924.6A CN105989643A (en) | 2015-02-03 | 2015-02-03 | Communication encryption method used for electronic lock, electronic lock apparatus and system thereof |
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| CN201510055924.6A CN105989643A (en) | 2015-02-03 | 2015-02-03 | Communication encryption method used for electronic lock, electronic lock apparatus and system thereof |
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| CN106761014A (en) * | 2015-11-20 | 2017-05-31 | 台山平安五金制品有限公司 | A kind of intelligent electromechanical double-control electronic lock |
| CN107797566A (en) * | 2017-10-20 | 2018-03-13 | 莲花丝路科技有限公司 | A kind of ground controlled approach of unmanned plane |
| CN108923913A (en) * | 2018-06-14 | 2018-11-30 | 温州极客物联网开发实验室有限公司 | A kind of algorithm of calling type dynamic key |
| CN109168162A (en) * | 2018-11-20 | 2019-01-08 | 北京千丁互联科技有限公司 | Bluetooth communication encryption method, device and intelligent security guard equipment |
| CN109360316A (en) * | 2018-11-20 | 2019-02-19 | 上海古鳌电子科技股份有限公司 | A kind of intelligent lock system and working method |
| CN109410390A (en) * | 2018-10-10 | 2019-03-01 | 联合汽车电子有限公司 | The cryptographic key distribution method of intelligent vehicle key |
| CN111063070A (en) * | 2019-12-26 | 2020-04-24 | 捷德（中国）信息科技有限公司 | Digital key sharing method, digital key verification method and digital key verification equipment |
| CN111275855A (en) * | 2020-01-17 | 2020-06-12 | 珠海格力电器股份有限公司 | Door lock control method, device and system, electronic equipment and storage medium |
| CN112950813A (en) * | 2019-11-26 | 2021-06-11 | 纳恩博（常州）科技有限公司 | Intelligent lock device, scooter, intelligent lock body control method thereof and storage medium |
| CN113538752A (en) * | 2021-07-20 | 2021-10-22 | 慧管(上海)信息科技有限公司 | Offline dynamic two-dimensional code verification method for access control terminal equipment |
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| CN106761014A (en) * | 2015-11-20 | 2017-05-31 | 台山平安五金制品有限公司 | A kind of intelligent electromechanical double-control electronic lock |
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| CN112950813A (en) * | 2019-11-26 | 2021-06-11 | 纳恩博（常州）科技有限公司 | Intelligent lock device, scooter, intelligent lock body control method thereof and storage medium |
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| CN111063070B (en) * | 2019-12-26 | 2021-07-09 | 捷德(中国)科技有限公司 | Digital key sharing method, digital key verification method and digital key verification equipment |
| CN111275855A (en) * | 2020-01-17 | 2020-06-12 | 珠海格力电器股份有限公司 | Door lock control method, device and system, electronic equipment and storage medium |
| CN113538752A (en) * | 2021-07-20 | 2021-10-22 | 慧管(上海)信息科技有限公司 | Offline dynamic two-dimensional code verification method for access control terminal equipment |
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Application publication date: 20161005 |
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