CN213279683U - Mobile quantum random number supplementing device and system - Google Patents
Mobile quantum random number supplementing device and system Download PDFInfo
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Abstract
The utility model discloses a portable quantum random number supplementing device and system, portable quantum random number supplementing device includes the identity information district, quantum key district, quantum random number storage area, CPU and RAM and communication module, portable quantum random number supplementing system includes portable quantum random number supplementing device, user terminal and quantum communication service station, quantum random number storage area has the first supplementary quantum random number information that a plurality of groups come from quantum communication service station, the storage has the second supplementary quantum random number information corresponding with first quantum random number information in quantum communication service station. The utility model discloses alleviated quantum random number generator in the quantum communication service station and in the pressure of the peak period of awarding, promoted quantum communication network's quantum random number ability of awarding, improved the convenience that quantum random number was awarded, improved the security that quantum random number was awarded simultaneously.
Description
Technical Field
The utility model relates to a secret communication field of quantum especially relates to a portable quantum random number supplementary device and system.
Background
Random numbers have a central role in many important areas: such as authentication, security domain, cryptography, gaming, scientific analog computing, and the like. Therefore, high-quality true random number generators have been the subject of intense research. Conventional random number generators are mainly of two types: pseudo-random number generators and classical physical source random number generators. The pseudo-random number generator is based on a fixed algorithm and does not have any randomness per se; the classical physical source random number generator is based on the complexity of a physical system, and the classical physical theory does not have any randomness, so the generated random number is not a true random number in a strict sense, the data generation rate is slow, and the statistical property is poor.
The quantum random number generator is based on the basic theory of quantum mechanics, which has intrinsic randomness, so that the quantum random number generator is a true random number generator and strictly speaking, is a known only true random number generator. Through long-term development, the scheme of the quantum random number generator is continuously updated, and the existing mainstream quantum random number generator scheme comprises random phase fluctuation based on laser, intensity noise of a wide-spectrum light source and the like.
The quantum communication service station is provided with a quantum random number generator and a quantum random number issuing center, provides a quantum random number key for accessing a user, issues the quantum random number key to the user in a quantum key card mode, and forms a symmetric key pool between the quantum communication service station and the user quantum key card for identity authentication and message confidentiality between the quantum communication service station and the user quantum key card. However, the user still needs to use the quantum random number for other purposes than the key, such as using the quantum random number as a session key for key agreement, as a challenge number for challenge response identity authentication, and the like. However, since quantum random number hardware is large in size and high in cost, a large number of users do not have the capability of being equipped with quantum random number hardware. In a word, a large number of users not only obtain the quantum random number key, but also need to obtain and store the quantum random number, so as to make up for the defect that the users cannot be equipped with quantum random number hardware.
In summary, the existing distribution system based on quantum random number has the following problems:
1. in the business peak period of a quantum random number generator in a quantum communication service station, a plurality of users apply for quantum random numbers, and the quantum random number generator and a transmission network thereof are overloaded, so that the quantum random number supplement speed of the users is very low;
2. the quantum communication service station builds quantum random number issuing points which are connected through a wired network and have appointed positions, such as a random number issuing business hall, and a user can issue quantum random numbers only when the user issues the points, so that the convenience of quantum random number issuing of the user is poor;
3. the issued quantum random number is often not encrypted, so that an adversary can acquire the quantum random number through an intermediate link of transmission.
Disclosure of Invention
The technical scheme is as follows: the utility model provides a to the aforesaid is not enough, provides a portable quantum random number supplementary device and system.
A mobile quantum random number supplemental device, comprising:
the identity information area is used for storing the identity information of the mobile quantum random number supplementing device;
the quantum key area is used for storing quantum random numbers issued by the quantum communication service station and used as authentication keys between the mobile quantum random number supplementing device and the quantum communication service station and between the mobile quantum random number supplementing device and the supplemented user terminal;
the quantum random number storage area is used for storing a plurality of groups of first complementary quantum random number information sent from the quantum communication service station; wherein, second supplementary quantum random number information corresponding to the first quantum random number information is stored in the quantum communication service station; the first supplemental quantum random number information comprises encrypted information obtained by encrypting a certain section of supplemental quantum random number by using a symmetric encryption key of the supplemental quantum random number issued by a quantum communication service station, and a supplemental quantum random number pointer obtained by performing hash calculation on the encrypted information, and the second supplemental quantum random number information comprises the symmetric encryption key and the supplemental quantum random number pointer;
the CPU is used for receiving a supplementary quantum random number pointer sent by the quantum communication service station according to the supplementary quantum random number application of the user terminal and the identity information of the user terminal, sending first supplementary quantum random number information corresponding to the supplementary quantum random number pointer to the user terminal according to the supplementary quantum random number pointer, and completing quantum random number supplement through decryption of the user terminal;
and the communication module is used for communication between the mobile key supplement device and the user terminal and between the mobile key supplement device and the quantum communication service station.
The first supplementary quantum random number information also comprises length information of encrypted information in the first supplementary quantum random number information.
The mobile key supplement device is arranged on various mobile civil devices and various mobile fighting devices.
A mobile quantum random number replenishment system comprising:
the mobile quantum random number supplementing device;
the quantum communication service station stores second supplementary quantum random number information corresponding to the first quantum random number information stored in the mobile quantum random number supplementary device, is used for receiving supplementary quantum random number application of a user terminal of the to-be-supplemented quantum random number, and selects a group of second supplementary quantum random number information according to the application to send the second supplementary quantum random number information to the user terminal; simultaneously transmitting the supplementary quantum random number pointer and the user identity information in the second supplementary quantum random number information to the mobile quantum random number supplementary device;
and the user terminal sends a complementary quantum random number application to the quantum communication service station, receives second complementary quantum random number information returned by the user terminal, interacts with the mobile quantum random number supplementing device according to a complementary quantum random number pointer of the second complementary quantum random number information to obtain first complementary quantum random number information, and decrypts the first complementary quantum random number information by using a symmetric encryption key in the second complementary quantum random number information to obtain a corresponding quantum random number.
After the user terminal acquires the quantum random number, replying a message of successful quantum random number supplement to the mobile quantum random number supplement device, receiving the message and forwarding the message to the quantum communication service station, and deleting corresponding second supplement quantum random number information after the quantum communication service station receives the message.
After the user terminal acquires the quantum random number, replying a message of successful quantum random number supplement to the mobile quantum random number supplement device, receiving the message and forwarding the message to the quantum communication service station, and deleting corresponding second supplement quantum random number information after the quantum communication service station receives the message.
And the quantum communication service station issues the supplementary quantum random number and selects an issuing place with the highest quantum random number issuing speed or an issuing opportunity with the highest quantum random number issuing speed.
The quantum random number issuing point with the highest quantum random number issuing speed of the quantum communication service station is positioned at the quantum random number issuing point which is set up at the designated position of the quantum communication service station and is connected through a wired network; and the issuing time with the highest quantum random number issuing speed of the quantum communication service station is determined in the latter half night with lower business pressure of the quantum communication service station.
The quantum communication service station is also internally provided with a monitoring alarm module for monitoring the connection communication between the quantum communication service station and the mobile quantum random number supplementing device; and if the connection communication between the mobile quantum random number supplementing device and the mobile quantum random number supplementing device is abnormal, the mobile quantum random number supplementing device is not trusted any more, and the local secret key corresponding to the secret key carried by the mobile quantum random number supplementing device and the second quantum random number information corresponding to the first quantum random number information stored in the mobile quantum random number supplementing device are all destroyed.
The abnormal connection communication between the quantum communication service station and the mobile quantum random number supplementing device is specifically as follows: unable to contact within a specified time, or whose geographic location is outside of a trusted zone.
Has the advantages that:
1. the pressure of a quantum random number generator in a quantum communication service station in the issuing peak period is relieved, and the quantum random number issuing capability of a quantum communication network is improved;
2. the convenience of quantum random number issuance is improved (the issuance must be issued to a specified position originally and can be issued everywhere);
3. although the mobile quantum random number supplementing device is added in the method and is used as an intermediate link for key issuance, the issued quantum random number is encrypted, so that an enemy can hardly acquire the quantum random number through the intermediate link of transmission, and the safety of quantum random number issuance is guaranteed.
Drawings
FIG. 1 is a block diagram of a mobile quantum random number complementing device according to an embodiment of the present invention;
fig. 2 is a system communication flow diagram of an embodiment of the present invention;
fig. 3 is a block diagram of a quantum communication service station.
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 quantum random number supplementing device according to an embodiment of the present invention, as shown in fig. 1, the mobile quantum random number supplementing device of the present invention includes an identity information region, a quantum key region, a quantum random number storage region, a CPU, a RAM, and a communication module;
the identity information area stores the identity information of the mobile quantum random number supplementing device;
the quantum key area stores quantum random numbers from the quantum communication service station, wherein one part of the quantum key area is used as a session key between the mobile quantum random number supplementing device and the quantum communication service station, and the other part of the quantum key area is used as a session key between the mobile quantum random number supplementing device and a supplemented user terminal;
the quantum random number storage region stores a plurality of groups of first supplementary quantum random number information from the quantum communication service station, wherein second supplementary quantum random number information corresponding to the first quantum random number information is stored in the quantum communication service station; the first complementary quantum random number information comprises encrypted information obtained by encrypting a certain section of complementary quantum random number by using a symmetric encryption key of the complementary quantum random number issued by the quantum communication service station and a complementary quantum random number pointer obtained by carrying out hash calculation on the encrypted information, and the second complementary quantum random number information comprises the symmetric encryption key and the complementary quantum random number pointer;
the CPU is used for interacting with the quantum communication service station and the user terminal respectively to complete quantum random number supplement;
the mobile quantum random number supplementing device of the embodiment receives the supplement notification information sent by the quantum communication service station through the CPU, and the supplement notification information carries a supplement quantum random number pointer encrypted by a session key between the supplement notification information and the identity information of the user terminal; then, the CPU carries out decryption to obtain a complementary quantum random number pointer and user terminal identity information, first complementary quantum random number information corresponding to the complementary quantum random number pointer is sent to a corresponding user terminal, corresponding service data is recorded, a message that quantum random number complementation sent by the user terminal is successful is received, meanwhile, corresponding first complementary quantum random number information stored in a quantum random number storage region is cleared, and the message that the user terminal is successful in supplementing the quantum random number is sent to a quantum communication service station;
the communication module is used for communication between the mobile key supplement device and the user terminal and the quantum communication service station.
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.).
The utility model also provides a portable quantum random number complementary system, including quantum communication service station, aforementioned portable quantum random number complementary unit and user terminal. The structure diagram of the quantum communication service station is shown in fig. 3, and the quantum communication service station provides a quantum random number key for an access user and issues the quantum random number key to the user in a quantum key card manner.
The quantum communication service stations are connected with other quantum communication service stations directly or indirectly to form a quantum communication network; wherein, 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 information 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 not only controls the functions of the quantum random number generator and the quantum communication gateway, but also has the functions of user registration, user access, various cryptography applications, user information storage, user key storage and the like, and is used as a quantum random number issuing center of a user in the patent; 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 being acquired by a user terminal externally connected into the quantum communication network, one part of the quantum random numbers is used as a quantum key shared between the user terminal and the quantum communication service station, and the other part of the quantum random numbers is acquired and stored by the user terminal and is used for other purposes besides the quantum key.
The user terminal is provided with a quantum key card, and the quantum key card is used for carrying out data interaction with a master control center of the quantum communication service station so as to obtain a quantum random number as a quantum key of the user terminal relative to the quantum communication service station. The internal structure of the quantum key fob includes a CPU, memory, storage, an operating system, which can store user information, keys, and cryptographic algorithms. 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 quantum communication service station generates a plurality of sections of complementary quantum random numbers, generates a corresponding symmetric encryption key for each section of complementary quantum random number, encrypts each section of complementary quantum random number by using the corresponding symmetric encryption key to obtain encryption information, performs hash calculation on the encryption information to obtain a complementary quantum random number pointer pointing to the section of complementary quantum random number, and combines the complementary quantum random number pointer with the encryption information and the length of each section of complementary quantum random number to obtain a plurality of groups of first quantum random number information; all the obtained first quantum random number information is issued to the mobile quantum random number supplementing device of the embodiment, and meanwhile, a supplementing quantum random number pointer of each segment of supplementing quantum random number and a symmetric encryption key of each segment of supplementing quantum random number are combined to obtain a plurality of groups of second quantum random number information and store the groups of second quantum random number information.
The method is characterized in that the complementary quantum random number issued by the quantum communication service station can be at any time or any place, the best choice is to issue the place with the highest quantum random number issuing speed or the opportunity with the highest quantum random number issuing speed, the place with the highest quantum random number issuing speed is generally the quantum random number issuing point which is arranged at the specified position and constructed by the quantum communication service station and connected through a wired network, and the opportunity with the highest quantum random number issuing speed is determined in the later half night with lower business pressure of the quantum communication service station.
The quantum communication service station receives a complementary quantum random number application which is sent by a user terminal of the quantum random number to be complemented and encrypted by using a session key between the user terminal and the user terminal, decrypts by adopting a corresponding session key to obtain the complementary quantum random number application, selects a group of second complementary quantum random number information according to the complementary quantum random number application, encrypts the second complementary quantum random number information by using the session key between the user terminal and sends the second complementary quantum random number information to the user terminal; meanwhile, the quantum communication service station encrypts the supplemental quantum random number pointer in the second supplemental quantum random number information and the identity information of the user terminal by using the session key between the quantum communication service station and the mobile quantum random number supplementing device of the embodiment, and sends the supplemental quantum random number pointer and the identity information of the user terminal to the mobile quantum random number supplementing device of the embodiment, notifies the user terminal of quantum random number supplementation, receives the message that the quantum random number supplementation of the user terminal is successful, and deletes the corresponding second supplemental quantum random number information at the same time, and records the service data of the quantum random number issued by the mobile quantum random number supplementing device of the embodiment for the service charging.
The user terminal encrypts the application of the complementary quantum random number by using the session key between the user terminal and the quantum communication service station, sends the application to the quantum communication service station, receives second complementary quantum random number information which is sent by the quantum communication service station and encrypted by using the session key between the user terminal and the quantum communication service station, communicates with the mobile quantum random number supplementing device of the embodiment to obtain corresponding first complementary quantum random number information sent by the user terminal, decrypts the first complementary quantum random number information by using the symmetric encryption key in the second complementary quantum random number information to obtain a corresponding complementary quantum random number, and stores the complementary quantum random number in the quantum key card of the user terminal to complete quantum random number supplementation; and after the quantum random number is obtained, replying a message that the quantum random number is successfully supplemented to the mobile quantum random number supplementing device.
The utility model discloses in, the quantum random number of quantum communication service station issues the center and monitors portable quantum random number supplementing device, if appear unusually (can't contact in the stipulated time, or its geographical position reachs outside the credible region), then no longer trusts this portable quantum random number supplementing device to with the local key that the key that this portable quantum random number supplementing device carried corresponds and with the whole destruction of the second quantum random number information that the interior first quantum random number information of this portable quantum random number supplementing device internal storage corresponds.
Fig. 2 is a system communication flow chart according to an embodiment of the present invention, as shown in fig. 2, the key supplement flow performed by the mobile quantum random number supplement device of the present invention is as follows:
and (3) setting a certain section of supplementary quantum random number as K, setting the symmetric encryption key of the section of quantum random number as KK, and encrypting the K by using the KK 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 format of storage in the quantum random number issuance center is MKK ═ { KID, KK }.
The quantum random number issuing center issues multiple groups of MK to the mobile quantum random number supplementing device, and an issuing place with the highest quantum random number issuing speed or an issuing opportunity with the highest quantum random number issuing speed can be selected, for example, the issuing place is a quantum random number issuing point which is arranged at a specified position set up by the quantum random number issuing center and connected through a wired network, and the issuing opportunity is set in the later night with lower business pressure of the quantum random number issuing center.
A complemented person of the quantum random number complement is A, a mobile quantum random number complement device is B, and a quantum random number issuing center is S.
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。
The MK procedure text is obtained as follows:
step 1: a → S
A sends application MSG of complement quantum random number to S, and uses session key K between SSAEncrypting the MSG to obtain { MSG } KSATogether with the use of KSAMessage authentication code MAC (MSG, K) computed for MSGSA) Are sent to S together. The message sent may be denoted as { MSG } KSA||MAC(MSG,KSA)。
Step 2: s → A
S after receiving the application, using KSAThe message authentication code is decrypted and verified. And S, after obtaining the message of the key application of A, selecting one 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) Sent to a together, informing a to receive the quantum random number. 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) And sending the data to B together to inform B to carry out quantum random number supplementation on 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, the mobile terminal moves to the vicinity of A and communicates with A by means of wired connection or short-range wireless connection.
B selection of the corresponding MK according to KID together with the use of KSABComputing a message authentication code MAC (MK, K) for MKSAB) Are sent to a together. The transmitted message may be represented as MK | | MAC (MK, K)SAB)。
And 5: a → B
A is KSABAnd after the message authentication code is verified, MK is obtained. Decrypting KKK using KKAnd when the current quantum key card reaches K, storing the quantum random number K in the quantum key card to complete quantum random number supplementation.
And after the A acquires the quantum random number K, replying a message that the quantum random number is successfully supplemented to the B.
Step 6: b → S
B, after obtaining the reply message of A, eliminating the locally stored MK, replying the message that the A quantum random number is successfully supplemented to S, deleting the MKK corresponding to KID by S, recording the service data of the B issuing the quantum random number to A, and being used for service charging.
After the whole quantum random number supplementing process is finished, B can leave A, and the subsequent A can use the supplemented quantum random number K.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
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. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (4)
1. A mobile quantum random number supplementing device is characterized in that: the method comprises the following steps:
the identity information area is used for storing the identity information of the mobile quantum random number supplementing device;
the quantum key area is used for storing quantum random numbers issued by the quantum communication service station and used as session keys between the mobile quantum random number supplementing device and the quantum communication service station and between the mobile quantum random number supplementing device and the supplemented user terminal;
the quantum random number storage area is used for storing a plurality of groups of first complementary quantum random number information from the quantum communication service station; wherein second supplemental quantum random number information corresponding to the first supplemental quantum random number information is stored in the quantum communication service station; the first supplemental quantum random number information comprises encrypted information obtained by encrypting a certain section of supplemental quantum random number by using a symmetric encryption key of the supplemental quantum random number issued by a quantum communication service station, and a supplemental quantum random number pointer obtained by performing hash calculation on the encrypted information, and the second supplemental quantum random number information comprises the symmetric encryption key and the supplemental quantum random number pointer;
the CPU is used for receiving a supplementary quantum random number pointer sent by the quantum communication service station according to the supplementary quantum random number application of the user terminal and the identity information of the user terminal, sending first supplementary quantum random number information corresponding to the supplementary quantum random number pointer to the user terminal according to the supplementary quantum random number pointer, and completing quantum random number supplement through decryption of the user terminal;
and the communication module is used for communication between the mobile key supplement device and the user terminal and between the mobile key supplement device and the quantum communication service station.
2. The mobile quantum random number replenishment device of claim 1, wherein: the first supplementary quantum random number information also comprises length information of encrypted information in the first supplementary quantum random number information.
3. The mobile quantum random number replenishment device of claim 1, wherein: the mobile key supplement device is arranged on various mobile civil devices and various mobile fighting devices.
4. A mobile quantum random number supplementing system is characterized in that: the method comprises the following steps:
the mobile quantum random number complementing device of any one of claims 1 to 3;
the quantum communication service station stores second supplementary quantum random number information corresponding to the first supplementary quantum random number information stored in the mobile quantum random number supplementary device, is used for receiving supplementary quantum random number application of a user terminal of the to-be-supplemented quantum random number, and selects a group of second supplementary quantum random number information according to the application to send the second supplementary quantum random number information to the user terminal; simultaneously transmitting the supplementary quantum random number pointer and the user identity information in the second supplementary quantum random number information to the mobile quantum random number supplementary device;
and the user terminal sends a complementary quantum random number application to the quantum communication service station, receives second complementary quantum random number information returned by the user terminal, interacts with the mobile quantum random number supplementing device according to a complementary quantum random number pointer of the second complementary quantum random number information to obtain first complementary quantum random number information, and decrypts the first complementary quantum random number information by using a symmetric encryption key in the second complementary quantum random number information to obtain a corresponding quantum random number.
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