CN212115339U - Movable key supplement device and system based on quantum key - Google Patents
Movable key supplement device and system based on quantum key Download PDFInfo
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- CN212115339U CN212115339U CN202020763063.3U CN202020763063U CN212115339U CN 212115339 U CN212115339 U CN 212115339U CN 202020763063 U CN202020763063 U CN 202020763063U CN 212115339 U CN212115339 U CN 212115339U
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Abstract
The utility model discloses a portable secret key supplementary device and system based on quantum key, portable secret key supplementary device include that secret key supplements district, CPU, identity information district, quantum key district and communication module, and portable secret key supplementary system includes that aforementioned portable secret key supplements device, secret key issue center and mobile terminal. The utility model discloses a portable secret key supplyes the device and has alleviated the pressure that the key issued the center and issued the peak period at the key, has promoted the center and has issued the ability of issuing of peak period at the key, has promoted the security that the key was issued and user's convenience simultaneously.
Description
Technical Field
The utility model relates to a secret communication field of quantum especially relates to a portable key supplement unit and system based on quantum key.
Background
Quantum communication technology is an emerging secure communication technology established based on quantum physics. The quantum communication technology of China has already entered the stage of practicability, and its application prospect and strategic significance have also drawn extensive attention to the development of the industry by local governments and important industries. In addition to establishing quantum communication trunks, some large-scale metropolitan quantum communication networks have also been successfully built and operated. Based on the metropolitan area quantum communication network, the quantum communication technology also has primary application, and high-security video voice communication and other applications can be realized. Quantum communication networks such as quantum communication trunk and quantum communication metropolitan area networks constitute a quantum communication network, and the essence of the quantum communication network is Quantum Key Distribution (QKD). Quantum communication networks built on QKD technology can therefore be referred to as QKD networks.
With the rapid development of the mobile internet, the business websites in the enterprise and public institution gradually develop towards the mobile terminal, so that the user hopes to access the website server in the enterprise and public institution through the portable mobile terminal in order to facilitate the staff to know the work content at any time. In order to ensure the security of the mobile terminal, the interaction information between the user and the management platform is usually encrypted to prevent theft. The existing information interaction mode based on the quantum communication network has higher safety and can be used for key distribution between a mobile terminal of a user and a management platform. However, the implementation difficulty of deploying a quantum communication network between a mobile terminal and a management platform is large.
In summary, the existing quantum-based key distribution system has the following problems:
1. the use mode of the key by the user is preferably one-time pad, so the key is frequently required to be supplemented; in the key supplement peak period, a plurality of users applying for key supplement are provided, and the key issuing center is overwhelmed, so that the key supplement speed of the users is very low;
2. the key issuing center is provided with a key issuing point which is arranged at a specified position and connected through a wired network, such as a key issuing business hall, and a user can issue the key only by the key issuing point, so that the convenience of key issuing of the user is poor;
3. often, issued keys are not encrypted, so an adversary may acquire the keys through the middle link of key transmission.
Disclosure of Invention
The purpose of the invention is as follows: the utility model discloses to the aforesaid is not enough, provides a portable secret key supplyes device and system based on quantum key, has alleviated the secret key and has issued the center and at the pressure that the key issued the peak period, when having promoted the convenience that the user secret key issued, has also guaranteed the security that the secret key was issued.
The technical scheme is as follows:
a quantum key based portable key escrow device, comprising:
the key supplement area is used for storing first supplementary key information in a plurality of supplementary key information; the key issuing center is used for issuing a key, wherein the supplementary key information is stored in the key issuing center and comprises first supplementary key information and second supplementary key information; the first supplementary key information comprises encrypted information obtained by encrypting a certain section of supplementary key issued by a key issuing center through a symmetric encryption key of the supplementary key and a supplementary key pointer obtained by carrying out Hash calculation on the encrypted information; the second supplementary key information comprises the symmetric encryption key and the supplementary key pointer;
an identity information area for storing the identity information of the mobile key supplement device;
the quantum key area is used for storing quantum random numbers generated by the key issuing center and used as an authentication key between the mobile key supplement device and the supplemented mobile terminal;
the CPU is used for interacting with the key issuing center and the mobile terminal respectively to complete key supplement;
and the communication module is used for communication among the mobile key supplement device, the mobile terminal and the key issuing center.
And the key issuing center issues the supplementary key at the issuing place with the highest key issuing speed or the issuing opportunity with the highest key issuing speed.
The key issuing place with the highest key issuing speed is located at the key issuing point which is set up by the key issuing center and connected through the wired network, and the issuing time with the highest key issuing speed is determined in the latter half night with lower business pressure of the key issuing center.
The mobile key supplement device is arranged on various mobile civil devices and various mobile fighting devices.
A mobile key supplement system based on quantum key comprises
The key issuing center is a main control center of the quantum communication service station, and a plurality of groups of supplementary key information are stored in the key issuing center; the key issuing center receives a supplementary key application including identity information of the mobile terminal, selects one group of supplementary key information, encrypts second supplementary key information and sends the second supplementary key information to the mobile terminal; after the first supplementary key information is encrypted, the first supplementary key information and the identity information of the mobile terminal are sent to the mobile key supplementary device, and the mobile key supplementary device is informed to carry out key supplement on the mobile terminal; receiving key supplement success information sent by the mobile terminal;
the mobile key supplement device;
the mobile terminal sends a supplementary key application including identity information of the mobile terminal to the key issuing center and receives encrypted second supplementary key information sent by the key issuing center; then, the mobile key supplementing device is interacted with the second supplementary key information and the authentication key between the second supplementary key information and the mobile key supplementing device to obtain first supplementary key information, and the first supplementary key information is decrypted through a symmetric encryption key in the second supplementary key information to obtain a supplementary key; and sending the key supplement success information to the key issuing center.
A monitoring alarm module is also arranged in the key issuing center and is used for monitoring the connection communication with the mobile key supplement device; if the connection communication between the mobile key supplement device and the mobile key supplement device is abnormal, the mobile key supplement device is not trusting any more, and the local keys corresponding to the keys carried by the mobile key supplement device are all destroyed.
The abnormal communication between the mobile key supplement device and the mobile key supplement device is that the mobile key supplement device cannot be contacted within a specified time or the geographical position of the mobile key supplement device reaches the outside of a trusted area.
An encryption module is arranged in the mobile terminal; the encryption module encrypts supplementary key information including the identity information sent by the mobile terminal through a session key between the mobile terminal and the key issuing center, and the key issuing center decrypts the supplementary key information according to the corresponding session key to obtain the identity information and supplementary key application.
Has the advantages that:
1. the utility model discloses in, added portable secret key supplementary device, alleviated the pressure of secret key issue center in the key issue peak period, promoted the issue ability of secret key issue center in the key issue peak period;
2. the user does not need to go to a specified position for key recharging any more, and convenience of key issuing of the user is improved;
3. although the utility model discloses newly increased portable secret key supplementary device and issued the intermediate link as the secret key, the secret key of nevertheless awarding has been encrypted, and encrypts the secret key and send to by the person's hand of awarding through other communication channel encryption, therefore the enemy hardly acquires the secret key through the intermediate link of secret key transmission, has guaranteed the security that the secret key was awarded promptly.
Drawings
Fig. 1 is a structural diagram of a mobile key supplementing apparatus according to an embodiment of the present invention.
Fig. 2 is a structural diagram of a mobile key supplementing apparatus according to another embodiment of the present invention.
Fig. 3 is a block diagram of a quantum communication service station.
Fig. 4 is a communication flow chart provided by an embodiment of the present invention.
Detailed Description
The invention will be further elucidated with reference to the drawings and the specific embodiments.
Fig. 1 is a structural diagram of a mobile key supplementing apparatus according to an embodiment of the present invention. As shown in fig. 1, the mobile key supplement device of the present invention includes a key supplement area, a CPU, an identity information area, a quantum key area, and a communication module;
the communication module is used for communication among the mobile key supplement device, the mobile terminal and the key issuing center;
the key supplement area stores first supplementary key information in a plurality of supplementary key information, and the first supplementary key information comprises encrypted information obtained by encrypting a certain section of supplementary key by using a symmetric encryption key of the supplementary key issued by the key issuing center and a supplementary key pointer obtained by performing hash calculation on the encrypted information; and the key issuing center stores supplementary key information, wherein the supplementary key information comprises first supplementary key information and second supplementary key information, and the second supplementary key information comprises the symmetric encryption key and the supplementary key pointer.
The utility model discloses in, the supplementary key of key issue center issue can be at any time or any place, and the best selection is in the fastest place of issuing of key issue speed or the fastest opportunity of issuing of key issue speed, and the fastest place of issuing of general key issue speed is located the key issue point through wired network connection of the assigned position that the key issue center built, and the fastest opportunity of issuing of key issue speed is fixed in the latter half night that key issue center business pressure is less.
The identity information area stores the identity information of the mobile key supplement device; the quantum key area is used for storing quantum random numbers generated by the key issuing center and used as an authentication key between the mobile key supplementing device and the supplemented mobile terminal;
the CPU is used for interacting with the key issuing center and the mobile terminal respectively to complete key supplement;
the mobile key supplementing device receives second supplementary key information which is sent by the key issuing center according to the supplementary key application of the mobile terminal and has a mobile terminal ID and is encrypted, decrypts the second supplementary key information to obtain second supplementary key information, selects corresponding first supplementary key information according to a supplementary key pointer in the second supplementary key information, decrypts the first supplementary key information through a symmetric encryption key to obtain a supplementary key, and stores the supplementary key in the mobile terminal according to the mobile terminal ID to complete key supplementation; after completion of the key supplement, the portable key supplement apparatus clears the first supplementary key information of the piece of supplementary key stored in the supplementary key area.
The utility model discloses in, portable key supplement unit can settle on various portable civilian devices (civil unmanned aerial vehicle, bus, ship, mobile robot, unmanned underwater vehicle etc.) and all kinds of portable battle devices (military unmanned aerial vehicle, military vehicle, tank, warship, submarine, early warning machine etc.).
Fig. 2 is a structural diagram of a mobile key supplementing apparatus according to another embodiment of the present invention. As shown in fig. 2, a mobile key supplement device according to another embodiment of the present invention includes a supplementary key area, a quantum key fob and a host, wherein the quantum key fob includes a CPU, an identity information area and a quantum key area; the host computer comprises a CPU, a storage area and a communication module.
Fig. 4 is a communication flow chart provided by an embodiment of the present invention. As shown in fig. 4, the mobile key supplement system based on quantum key of the present invention includes a key issuing center, the aforementioned mobile key supplement device and a mobile terminal;
the mobile terminal is provided with a quantum key fob which is used for carrying out data interaction with a main control center of a quantum communication service station to acquire a quantum random number as a quantum key of the user terminal relative to the quantum communication service station, and the internal structure of the quantum key fob comprises a built-in CPU, a memory, a storage and an operating system, and can store user information, keys and a cryptographic algorithm. The writing operation of the data in the storage space of the quantum key card is realized by a program on a main control center of a quantum communication service station, otherwise, the writing operation cannot be realized; the encryption and decryption operation is carried out in the quantum key card, and the key is ensured not to appear in a user machine. Therefore, the quantum key fob precludes the possibility of hackers copying user key information and writing illegal information at the user side. When the user machine is a personal computer, the preferred expression form of the quantum KEY card is USB KEY or a personal computer mainboard board card; when the user machine is a mobile terminal, the preferred expression of the quantum KEY fob is an SD KEY or a mobile terminal motherboard chip.
The mobile terminal carries out conversation with the key issuing center through a wireless network, sends a supplementary key application including identity information of the mobile terminal, encrypts the supplementary key application by using a conversation key between the mobile terminal and the key issuing center through an encryption module in the mobile terminal and then sends the encrypted supplementary key application to the key issuing center; receiving second supplementary key information which is sent by the key issuing center according to the supplementary key application and encrypted by a session key between the key issuing center and the key issuing center; then, the mobile key supplementing device is interacted with the second supplementary key information and the authentication key between the second supplementary key information and the mobile key supplementing device to obtain first supplementary key information, and the first supplementary key information is decrypted by the symmetric encryption key to obtain a supplementary key; sending the information of successful supplement of the secret key to a secret key issuing center;
the key issuing center is a master control center of the quantum communication service station, and the structure diagram of the quantum communication service station is shown in fig. 3. The quantum communication service station provides a quantum random number key for an access user, and issues the quantum random number key to the access user in a quantum key card mode, wherein the access user comprises a mobile terminal or a mobile key supplement device; the quantum communication service stations are connected with other quantum communication service stations directly or indirectly to form a quantum communication network, the direct connection means that two quantum communication service stations do not need to carry out information transfer through a third quantum communication service station, and the indirect connection means that at least 1 quantum communication service station is needed to carry out message transfer between the two quantum communication service stations.
Each quantum communication service station comprises a master control center, a quantum communication gateway and a quantum random number generator. If two quantum communication service stations are directly connected, quantum communication gateways corresponding to each other must be arranged between the two quantum communication service stations. The master control center controls the functions of the quantum random number generator and the quantum communication gateway, and also comprises the functions of user registration, user access, various cryptography applications, user information storage, user key storage and the like, and is used as a key issuing center of a user; the quantum communication gateway is used for carrying out key distribution to form a quantum key shared in different places between the two service stations which are directly connected; the quantum random number generator is used for forming quantum random numbers for users externally connected to the quantum communication network to obtain, so that a shared quantum key is formed between the users and the quantum communication service station.
The key issuing center stores a plurality of groups of supplementary key information, the supplementary key information comprises first supplementary key information and second supplementary key information, wherein the first key information comprises encrypted information obtained by encrypting a certain section of supplementary key by using a symmetric encryption key of the supplementary key and a supplementary key pointer obtained by carrying out hash calculation on the encrypted information; the second supplementary key information comprises the symmetric encryption key and the supplementary key pointer; the key issuing center receives a supplementary key application which is sent by the mobile terminal and comprises encrypted identity information of the mobile terminal, decrypts the supplementary key application through a corresponding session key to obtain the identity information and the supplementary key application, selects one group of supplementary key information, encrypts second supplementary key information and sends the second supplementary key information to the mobile terminal; after the first supplementary key information is encrypted, the first supplementary key information and the identity information of the mobile terminal are sent to the mobile key supplementary device, and the mobile key supplementary device is informed to carry out key supplement on the mobile terminal; and receiving the key supplement success information sent by the mobile terminal.
The utility model discloses in, the key issuing center monitors portable key supplement unit, if appear unusually (can't contact in the time of stipulating, or its geographical position reachs outside the credible region), then no longer trusts this portable key supplement unit to the local key that the key that will portable key supplement unit carried corresponds is whole to be destroyed.
The working principle of the utility model is as follows:
stage 1: quantum key fob handling
The quantum key card is a network access license of a quantum communication network, and a user can enjoy quantum communication service only after transacting. When the user is transacted for the first time, the user needs to carry the valid identity document and the related data to the quantum communication service station to fill in the application, and after the application is approved, the quantum key fob can be obtained. In this case, the quantum key card stores therein, in addition to the user ID, the quantum communication service station ID and the quantum key of the number specified by the user. The principle in the quantum communication service station is that a quantum true random number generator generates quantum keys with the quantity specified by a user, and a quantum service station master control center writes the quantum keys into a quantum key card through a specific program on one hand and stores the quantum keys into a quantum key management database of the service station on the other hand. The key with the same recharge forms a key data block. The key is stored in the key data block in units of segments, and a segment may be one byte or a plurality of bytes.
And (2) stage: quantum key fob recharge
The user carries the quantum key card to charge up any quantum communication service station. After the quantum service station master control center authenticates the identity of the user to which the quantum key card belongs, the quantum true random number generator generates quantum keys of the quantity specified by the user, and on one hand, the quantum service station master control center writes the quantum keys into the quantum key card through a specific program, and on the other hand, stores the quantum keys into a quantum key management database of the service station. Besides storing the newly charged quantum key data block, the ID of the quantum communication service station where the current charge is located needs to be stored, and a relationship is established between the two to indicate that the newly added quantum key data block is issued by the service station. Preferably, the ID of the quantum communication service station may be stored before the newly charged quantum key data block. There may be multiple blocks of top-up key data within the quantum key fob at a time, each block region being marked by the ID of a different service station.
The quantum key card transaction and quantum key card recharging process is suitable for the transaction and recharging of common users, the transaction of the mobile key supplementing device and the recharging of the quantum key area. The portable key supplement apparatus further has a supplementary key area in which a plurality of pieces of supplementary keys are stored.
The key supplement process is as follows:
and a certain segment of supplementary key is set to be K, the symmetric encryption key of the segment of supplementary key is KK, and the KK encryption K is used to obtain KKK ═ { K } KK. Hash calculation is performed on KKK to obtain KID ═ hash (KKK), and MK ═ KID, LEN, KKK } is obtained by combining with the length LEN of KKK. The key format stored by the key issuing center is { MK, MKK }, where MKK ═ KID, KK }. When K needs to be accessed, KK is decrypted using KK to obtain K.
The key issuing center issues multiple groups of MK to the mobile key supplement device, and the issuing place with the highest key issuing speed and the issuing opportunity with the highest key issuing speed can be selected, for example, the key issuing place is located at a specified position built by the key issuing center and connected through a wired network, and the issuing opportunity is determined in the later midnight with lower business pressure of the key issuing center.
Setting a supplemented person for key supplementation as A, a mobile key supplementation device as B and a key issuing center as S; a needs to obtain MKK at S and MK at B. The following steps take the example of obtaining MKK from S and then MK from KID at B.
(1) The pre-issuing process comprises the following steps:
a and B both establish a session key K with S through a wireless networkSA/KSB；
S generates a quantum random number as an authentication key K between A and BAB；
S is respectively represented by KSA/KSBProtection of, issuing K for A and B simultaneouslyAB；
K for A and BABIdentity authentication is carried out, and a session key K between A and B is generatedSAB；
(2) The MK acquisition process, as shown in fig. 4, is described in text as follows:
step 1: a → S
A sends an application MSG for complementing the key to S, and uses a session key K between S and ASAEncrypting the MSG to obtain { MSG } KSATogether with the use of KwAMessage authentication code MAC (MSG, K) computed for MSGSA) Sending the data to the S; the message sent may be denoted as { MSG } KSA||MAC(MSG,KSA)；
Step 2: s → A
S after receiving the application, using KSADecrypting and verifying the message authentication code; after obtaining the message of the application key of A, selecting a pair of { MK, MKK }; using a session key K with AsAMKK is encrypted to obtain { MKK } KsATogether with the use of KSAMessage authentication code MAC (MKK, K) computed for MKKSA) Sending the data to A together; the message sent may be represented as { MKK } KSA||MAC(MKK,KSA)；
And step 3: s → B
S uses a session key K with BSBEncrypting identity information IDs of KID and A in MKKATo obtain { KID | | | IDA}KSBTogether with the use of KSBCalculated message authentication code MAC (KID | | | ID)A,KSB) Sending the key information to B together, and informing B to supplement the key to A; the message sent may be represented as { KID | | | IDA}KSB||MAC(KID||IDA,KSB)；
And 4, step 4: b → A
B after receiving the message, uses KSBDecrypting and verifying the message authentication code to obtain KID | | | IDAThen moving to the vicinity of A and communicating with A in a wired connection or close-range wireless connection mode; b selection of the corresponding MK according to KID together with the use of KSABComputing a message authentication code MAC (MK, K) for MKSAB) Sending the data to A together; the transmitted message may be represented as MK | | MAC (MK, K)SAB)；
And 5: a → B
A is KsABAfter the message authentication code is verified, MK is obtained; decrypting the KK by using the KK to obtain K, and storing the key K in a quantum key card to complete key supplementation; after obtaining the key K, the A replies a message that the key is successfully supplemented to the B;
step 6: b → S
And B, after acquiring the reply message of A, clearing the locally stored MK, replying the message that the key supplement of A is successful to S, and S marks the key corresponding to KID as the key issued to A.
The utility model discloses in, whole secret key supplyes the back that the flow finishes, and B can leave A, and follow-up A utilizes K and S to carry out message encryption and decryption and message authentication. Can be selected fromTaking out 2 sections of secret keys K from KEAnd KAAs message encryption/decryption and message authentication keys, respectively.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (8)
1. A mobile key supplement device based on quantum key is characterized in that: the method comprises the following steps:
the key supplement area is used for storing first supplementary key information in a plurality of supplementary key information; the key issuing center is used for issuing a key, wherein the supplementary key information is stored in the key issuing center and comprises first supplementary key information and second supplementary key information; the first supplementary key information comprises encrypted information obtained by encrypting a certain section of supplementary key issued by a key issuing center through a symmetric encryption key of the supplementary key and a supplementary key pointer obtained by carrying out Hash calculation on the encrypted information; the second supplementary key information comprises the symmetric encryption key and the supplementary key pointer;
an identity information area for storing the identity information of the mobile key supplement device;
the quantum key area is used for storing quantum random numbers generated by the key issuing center and used as an authentication key between the mobile key supplement device and the supplemented mobile terminal;
the CPU is used for interacting with the key issuing center and the mobile terminal respectively to complete key supplement;
and the communication module is used for communication among the mobile key supplement device, the mobile terminal and the key issuing center.
2. The mobile key supplement apparatus of claim 1, wherein: and the key issuing center issues the supplementary key at the issuing place with the highest key issuing speed or the issuing opportunity with the highest key issuing speed.
3. The mobile key supplement apparatus of claim 2, wherein: the key issuing place with the highest key issuing speed is located at the key issuing point which is set up by the key issuing center and connected through the wired network, and the issuing time with the highest key issuing speed is determined in the latter half night with lower business pressure of the key issuing center.
4. The mobile key supplement apparatus of claim 1, wherein: the mobile key supplement device is arranged on various mobile civil devices and various mobile fighting devices.
5. A mobile key supplement system based on quantum keys is characterized in that: comprises that
The key issuing center is a main control center of the quantum communication service station, and a plurality of groups of supplementary key information are stored in the key issuing center; the key issuing center receives a supplementary key application including identity information of the mobile terminal, selects one group of supplementary key information, encrypts second supplementary key information and sends the second supplementary key information to the mobile terminal; after the first supplementary key information is encrypted, the first supplementary key information and the identity information of the mobile terminal are sent to the mobile key supplementary device, and the mobile key supplementary device is informed to carry out key supplement on the mobile terminal; receiving key supplement success information sent by the mobile terminal;
the portable key supplement apparatus as claimed in any one of claims 1 to 4;
the mobile terminal sends a supplementary key application including identity information of the mobile terminal to a key issuing center; receiving encrypted second supplementary key information sent by a key issuing center; interacting with the mobile key supplement device according to the second supplementary key information and the authentication key between the second supplementary key information and the mobile key supplement device to obtain first supplementary key information, and then decrypting through a symmetric encryption key in the second supplementary key information to obtain a supplementary key; and sending the key supplement success information to the key issuing center.
6. The mobile key supplement system of claim 5, wherein: a monitoring alarm module is also arranged in the key issuing center and is used for monitoring the connection communication with the mobile key supplement device; if the connection communication between the mobile key supplement device and the mobile key supplement device is abnormal, the mobile key supplement device is not trusting any more, and the local keys corresponding to the keys carried by the mobile key supplement device are all destroyed.
7. The mobile key supplement system of claim 6, wherein: the abnormal communication between the mobile key supplement device and the mobile key supplement device is that the mobile key supplement device cannot be contacted within a specified time or the geographical position of the mobile key supplement device reaches the outside of a trusted area.
8. The mobile key supplement system of claim 5, wherein: an encryption module is arranged in the mobile terminal; the encryption module encrypts supplementary key information including the identity information sent by the mobile terminal through a session key between the mobile terminal and the key issuing center, and the key issuing center decrypts the supplementary key information according to the corresponding session key to obtain the identity information and supplementary key application.
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