CN114650528A - An Emergency Communication Method Based on Quantum Keys - Google Patents

Abstract

The invention provides an emergency communication method based on a quantum key, wherein the quantum key is used for realizing the high-strength security protection of ' decentralized ' -bidirectional flow ' of emergency information, so that the encrypted and protected emergency information is not limited to a ' central broadcast-terminal receiving ' type model any more; meanwhile, the balance of data transmission safety and real-time availability in an emergency communication scene is effectively realized.

Description

An Emergency Communication Method Based on Quantum Keys

technical field

The invention relates to the technical field of secure communication, in particular to an emergency communication method based on quantum keys.

Background technique

In the field of emergency information confidential communication, such as investigation, police handling, emergencies, on-site command and other scenarios, there are already some solutions for implementing emergency communication. The communication method, in which the emergency information issuing end digitally signs and encrypts the graded emergency information, and sends the information in the form of short messages or FM broadcasts through the 2G/3G communication network; the information receiving end receives the short messages or FM broadcast signals after receiving , decrypt the ciphertext and verify the integrity of the information through the digital signature, and decrypt the plaintext after the verification is successful. In addition, in order to improve the security of information dissemination, some existing schemes will use encryption to transmit emergency information, but either the key is reused, or at most the level of "one industry, one secret" (that is, each business uses a different The business key protects the business data, but the key is still reused during the communication business process), which still has security for some "high-value information" that may need to be protected in special emergency situations. room for improvement.

In terms of sending and receiving methods, the existing emergency communication methods mostly adopt the sending and receiving mode of "central broadcast-terminal receiving", in which information can only flow in one direction.

However, in some emergency tasks, decentralization + two-way information flow is required, that is, any network access terminal has the ability to send emergency information to specific or unspecified target terminals individually or in groups. In addition, the security of the existing digital signature and ordinary encryption and decryption is difficult to achieve a high standard of confidentiality.

SUMMARY OF THE INVENTION

In response to this problem, the present invention proposes an emergency communication method based on quantum keys, in which "decentralization" of emergency information + high-strength security protection of bidirectional flow is realized based on quantum keys, so that the emergency communication protected by encryption Information is no longer limited to the "central broadcast-terminal receiving" model; it also effectively achieves a balance between data transmission security and real-time availability in emergency communication scenarios.

The quantum key-based emergency communication method of the present invention may include the following steps:

Key distribution step: providing a shared quantum key K _i between each emergency communication terminal Ti in the plurality of emergency communication terminals and the quantum key supply service network S;

The emergency information sending step: based on automatic or artificial triggering, the emergency communication terminal T _i uses the shared quantum key K _i to form the emergency information into encrypted data, and sends the encrypted data to the outside; and,

The step of receiving emergency information: receiving the encrypted data, and using the shared quantum key K _i to obtain the emergency information from the encrypted data.

Further, the key distribution step can be set to: generate a quantum key in the quantum key supply service network S; establish a wired connection between the quantum key supply service network S and the key filling terminal and, connecting the emergency communication terminal T _i with the key filling terminal to obtain the shared quantum key K _i .

Further, the key distribution step may also include, causing the quantum key supply service network S to periodically update the quantum key, thereby updating the emergency communication terminal T _i and the quantum key supply service network. step of the shared quantum key K _i in S.

Further, the key distribution step can be set to make the shared quantum key K _i of each emergency communication terminal T _i in the plurality of emergency communication terminals have the same shared quantum key K; and, The emergency information sending step is further configured to make one or more of the plurality of emergency communication terminals use the shared quantum key K to form the emergency information into the encrypted data, and send the encrypted data to the outside. the encrypted data.

Further, the emergency information receiving step may be configured to make one or more of the plurality of emergency communication terminals receive the encrypted data, and use the shared quantum key K to retrieve the encrypted data from the encrypted data. Obtain the emergency information.

Preferably, the emergency information sending step may be further configured to: make one or more of the plurality of emergency communication terminals generate a random sequence code, and send the random sequence code to the quantum key supply service network S , and propose a quantum key use application; the quantum key supply service network S determines the unused quantum key area according to the quantum key use application, and assigns the start address and end address of the quantum key area or The starting address and size are sent to one or more of the multiple emergency communication terminals, and the random sequence code is corresponding to the quantum key area, and the quantum key area is marked as used ; One or more of the plurality of emergency communication terminals use the shared quantum key K in the quantum key area corresponding to the random sequence code to form the emergency information as the encrypted data, and use the shared quantum key K in the quantum key area corresponding to the random sequence code The encrypted data and the random sequence code are sent out together.

The emergency information receiving step may be further configured to: one or more of the emergency communication terminals receive the encrypted data and the random sequence code, and send the random sequence code to the quantum key Supply service network S; the quantum key supply service network S sends the start address and end address or start address and size of the quantum key area to another in the emergency communication terminal according to the random sequence code. One or more; another or more of the emergency communication terminals obtain the emergency information from the encrypted data using the shared quantum key K in the quantum key area corresponding to the random sequence code .

Further, the step of receiving the emergency information may further include the step of causing another or more of the plurality of emergency communication terminals to send the emergency information to the information receiver R through a physical interface.

Further, the emergency information receiving step may be set to: make the quantum key supply service network S receive the encrypted data, obtain the emergency information from the encrypted data by using the shared quantum key K, and The emergency information is sent to the information receiver R.

Further, the emergency information receiving step can be set to:

causing the information receiver R to receive the encrypted data;

The secret chip storing the shared quantum key K is connected to the information receiver R to provide it with the shared quantum key K, and the information receiver R uses the shared quantum key K to obtain the obtain the emergency information from the encrypted data; or,

Connect the security chip storing the shared quantum key K to the information receiver R to receive the encrypted data, obtain the emergency information from the encrypted data by using the shared quantum key K, and use the shared quantum key K to obtain the emergency information from the encrypted data. The emergency information is sent to the information receiver R.

Further, the key distribution step may be set to: make the shared quantum keys of each emergency communication terminal in the plurality of emergency communication terminals different from each other;

The step of sending the emergency information is further configured to: one or more of the plurality of emergency communication terminals use the shared quantum key to form the emergency information into the first encrypted data, and send the information to the outside. the first encrypted data;

The emergency information receiving step is further configured to: cause the quantum key supply service network S to receive the first encrypted data, and use the shared quantum key of one or more of the plurality of emergency communication terminals from all the emergency communication terminals. obtaining the emergency information from the first encrypted data, and using the shared quantum key of one or more of the plurality of emergency communication terminals to form the emergency information into second encrypted data, and converting the second encrypted data is sent to one or more of the plurality of emergency communication terminals; and another or more of the plurality of emergency communication terminals utilizes the shared quantum key from the second encrypted data Obtain the emergency information.

Optionally, the step of sending emergency information further includes the step of compressing the emergency information before encryption to form compressed emergency information; and the step of receiving emergency information further includes compressing the compressed emergency information after decryption. The step of decompressing the information to obtain said emergency information.

Preferably, the emergency communication method of the present invention may further comprise the step of determining the level of the emergency information as one of the first level, the second level and the third level, wherein:

When the level of the emergency information is determined to be the first level, a one-time-one-pad encryption method is adopted for the emergency information;

When the level of the emergency information is determined to be the third level, a one-in-one-one-key encryption method is adopted for the emergency information;

When the level of the emergency information is determined to be the second level, according to the remaining amount and consumption rate of the shared quantum key, a one-time-one-pass or one-time-one-pass encryption method is selected for the emergency information.

Further, when the level of the emergency information is determined as the second level:

When the remaining amount of the shared quantum key is greater than the first preset value, select the encryption method of one-time pad;

The consumption rate of the shared quantum key in the current preset time period is not higher than the second preset value of the average consumption rate of the shared quantum key after the service is initiated, and the consumption rate of the shared quantum key When the remaining amount is greater than the third preset value, select the encryption method of one-time pad;

When the remaining amount of the shared quantum key is less than the fourth preset value, an encryption method of one key and one key is selected.

Further, in the one-time pad encryption mode, when the remaining amount of the shared quantum key is less than the fifth preset value, the emergency information is compressed before encryption.

Preferably, the first preset value is 75%, the preset time period is 1 minute, the second preset value is 1/3, the third preset value is 50%, and the first preset value is 50%. The fourth preset value is 50%, and the fifth preset value is 20%.

Preferably, when switching between the one-time-one-pad encryption method and the one-time-one-pad encryption method, a prompt is given to the user, and the address of the shared quantum key used for the switched encryption method is agreed.

Description of drawings

The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only For some embodiments of the present invention, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

Fig. 1 schematically shows an example of key distribution steps used in the emergency communication method of the present invention;

Fig. 2 schematically shows a specific embodiment of the second example of the first embodiment of the emergency communication method according to the present invention;

Fig. 3 schematically shows another specific embodiment of the second example of the first embodiment of the emergency communication method according to the present invention;

Fig. 4 schematically shows another specific embodiment of the second example of the first embodiment of the emergency communication method according to the present invention;

Fig. 5 schematically shows an example of a second embodiment of the emergency communication method according to the present invention.

Detailed ways

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. The following embodiments are provided by way of example in order to fully convey the spirit of the invention to those skilled in the art to which the invention pertains. Accordingly, the present invention is not limited to the embodiments disclosed herein.

The emergency communication system according to the present invention may include a quantum key supply service network S and a plurality of emergency communication terminals T _i (i=1, . . . , n), wherein the quantum key supply service network S and the emergency communication terminal T _i Shared quantum keys K _i are stored respectively.

FIG. 1 shows an example of key distribution steps used in the emergency communication method of the present invention.

In the example of FIG. 1 , the emergency communication terminal Ti can obtain the shared quantum key K _i from the key filling terminal C _j ( _j =1, . . . , m) wiredly connected to the quantum key supply service network S.

For example, the quantum key supply service network S can form a wired connection with one or more key filling terminals C _j at the same time, and each key filling terminal C _j can be wired simultaneously with one or more emergency communication terminals T _i , In order to charge the emergency communication terminal T _i with the quantum key K _i . After the charging is completed, the emergency communication terminal Ti can be _{disconnected from the key charging terminal C j ,} so that the emergency communication terminal _Ti can be restored to a free movement state.

Preferably, in order to ensure the freshness of the quantum key, the quantum key supply service network S can generate a new quantum key every preset time, and the emergency communication terminal T _i can recharge the terminal C by accessing any key, for example. _j Get a new quantum key K _i .

In the first embodiment of the present invention _{, each emergency communication terminal Ti and the shared quantum key K i of} the quantum key supply service network S have the same shared quantum key K.

At this time, in the emergency information sending step of the present invention, one or more of the emergency communication terminals T will act as the sender, and use the shared quantum key K to encrypt the emergency information in an automatic or artificial manner to generate Encrypt data and send it out.

Optionally, for example, when the data volume of the emergency information is large, the emergency communication terminal T as the sender can first compress the emergency information to obtain the compressed emergency information, and then use the shared quantum key K to perform the compressed emergency information. encrypted, resulting in encrypted data.

In the first example, in the emergency information receiving step, one or more of the emergency communication terminals T will receive the encrypted data as a receiver, and decrypt it using the shared quantum key K, thereby obtaining emergency information.

Optionally, when the emergency information is in a compressed state, the emergency communication terminal serving as the receiver also performs decompression processing on the compressed emergency information.

Those skilled in the art can understand that the first example is especially suitable for some combat, reconnaissance or information collection missions, where mission individuals need to exchange and share on-site information from time to time, but do not want to be cracked by the enemy, and these on-site information do not require on-site Manual generation is automatically collected or generated by machines, and is text (such as location information) or binary data (such as sound, picture, video, etc.) with a fixed content format, and the receiver is relatively fixed.

In a second example, the emergency communication system may further comprise an information receiver R.

FIG. 2 shows a specific embodiment of the second example.

As shown in FIG. 2, in this specific embodiment, in the emergency information receiving step, the quantum key supply service network S receives the encrypted data, decrypts it using the shared quantum key K, and summarizes the emergency information to the information receiving Machine R.

Optionally, when the emergency information is in a compressed state, the quantum key supply service network S further decompresses the compressed emergency information.

FIG. 3 shows another specific embodiment of the second example, wherein the information receiver R, the quantum key supply service network S, and the key filling terminals C1 to Cn are not in the same physical environment.

As shown in FIG. 3 , in this specific embodiment, the emergency communication system may further include a security chip (such as a U shield) with a computing function that stores the shared quantum key K.

At this time, in the emergency information receiving step, the information receiver R will receive the encrypted data as a receiver.

The security chip is connected to the information receiver R, and provides the information receiver R with a shared quantum key K, and the information receiver R uses the shared quantum key K to decrypt the encrypted data to obtain emergency information. Alternatively, the security chip is connected to the information receiver R, receives encrypted data from the information receiver R, and decrypts the encrypted data by using the shared quantum key K to obtain emergency information, and sends the emergency information to the information receiver R.

Optionally, when the emergency information is in a compressed state, the information receiver R or the security chip further decompresses the compressed emergency information.

FIG. 4 shows yet another specific embodiment of the second example.

As shown in Figure 4, in this specific embodiment, in the emergency information receiving step, one or more of the emergency communication terminals T will receive the encrypted data as the receiver, and decrypt it using the shared quantum key K, The emergency information is obtained and sent to the information receiver R through the physical interface.

Optionally, when the emergency information is in a compressed state, the emergency communication terminal T serving as the receiver also needs to decompress the compressed emergency information.

Those skilled in the art can understand that the second example is especially suitable for task individuals to carry equipment to go deep into the field to collect emergency information. The emergency information finally needs to be collected into the information receiver for further analysis for reference and decision-making, without the need for on-site individuals to exchange data with each other. application scenarios.

In the first embodiment of the present invention, the encryption and decryption processing of emergency information can be realized by the following procedures.

For example, in the emergency information sending step, the emergency communication terminal T as the sender generates a random sequence code, and sends the random sequence code to the quantum key supply service network S for applying for the use range of the quantum key;

Based on the application, the quantum key supply service network S determines the unmarked quantum key area in the quantum key K according to the key demand, and sends the start address and size or start address and end address of this area to As the emergency communication terminal of the sender; at the same time, mark this area (for example, mark it as "used"), and establish a corresponding relationship between the random sequence code and this marked area.

The emergency communication terminal as the sender encrypts the emergency information by using the quantum key K in the quantum key area corresponding to the random sequence code, and sends the encrypted data and the random sequence code together.

In the emergency information receiving step, the emergency communication terminal as the receiver receives the encrypted data and the random sequence code, and sends the random sequence code to the quantum key supply service network S for applying for the use range of the quantum key.

The quantum key supply service network S determines the corresponding quantum key area according to the random sequence code (for example, by searching), and sends the start address and size of this quantum key area or the start address and end address to the receiver. Emergency communication terminal.

The emergency communication terminal as the receiver decrypts the encrypted data by using the quantum key K in the quantum key area corresponding to the random sequence code to obtain emergency information.

In the second embodiment of the present invention _{, the shared quantum keys K i of} the respective emergency communication terminals Ti and the quantum key supply service network S may be different from each other.

FIG. 5 shows an example of an emergency communication system according to the second embodiment.

As shown in Figure 5, in the emergency information sending step, one or more T _i in the emergency communication terminal T will act as the sender to encrypt the emergency information using the shared quantum key K _i in an automatic or artificial triggering manner. The operation is performed to generate the first encrypted data and send it to the quantum key supply service network S.

Optionally, for example, when the data volume of the emergency information is large, the emergency communication terminal T _i as the sender can first compress the emergency information to obtain the compressed emergency information, and then use the shared quantum key K _i to compress the emergency information. The information is encrypted, resulting in encrypted data.

In the emergency information receiving step, the quantum key supply service network S decrypts the first encrypted data with the shared quantum key K _i to obtain emergency information (or compressed emergency information), and uses the emergency communication terminal as the receiver The quantum key K _j shared by T _j encrypts the emergency information (or compressed emergency information) to generate second encrypted data, and transmits the second encrypted data to the emergency communication terminal T _j .

The emergency communication terminal T _j receives the second encrypted data, and uses the shared quantum key K _j to decrypt the second encrypted data (or decompress the compressed emergency information), thereby obtaining the emergency information.

Further, the emergency communication system of the present invention may also allow the selection of the level of emergency information to determine the encryption method used for the emergency information.

For example, the levels of emergency information may include a first level (eg, a high level), a second level (eg, a general level), and a third level (eg, a low level).

In one example, when the emergency information is high-level, the emergency communication system can encrypt the emergency information in a one-time pad; when the emergency information is a low-level, the emergency communication system can encrypt the emergency information in a one-time, one-key manner information is encrypted.

When the emergency information is at a general level, the emergency communication system can choose a one-time-one-key or a one-time-one-key method to encrypt the emergency information according to the remaining amount and consumption rate of the shared quantum key.

Specifically, when the remaining amount of the shared quantum key is greater than the first preset value (which is preferably 75%), the encryption method of the one-time pad can be selected.

It is also possible that the shared quantum key consumption rate within the current preset time period (which is preferably one minute) is not higher than the second preset value of the average value of the shared quantum key consumption rate after the initiation of the entire service (which is preferably 1 /3), and when the remaining amount of the shared quantum key is greater than the third preset value (which is preferably 50%), the one-time one-time pad encryption method is selected.

When the remaining amount of the shared quantum key is less than the fourth preset value (which is preferably 50%), the encryption method of one encryption and one encryption can be adopted.

Further, when the one-time pad encryption method is adopted, if the remaining amount of the shared quantum key is less than the fifth preset value (which is preferably 20%), the emergency communication terminal will compress the emergency information.

Further, when the encryption mode is switched between the one-time-one pad and the one-office-one pad, the emergency communication terminal can prompt the user, for example, by means of sound, vibration, or graphics.

If it is an encryption form conversion during the business process, before the conversion from one key to one key to one key, the conversion initiator sends a conversion request to the opposite end, including the fixed quantum key to be used after using the one key to one key. The position (address) in the key. The selection of this position is based on the current use position and consumption rate of the shared quantum key, plus the consumption time in the communication process between the two parties, and then set aside a sixth preset value (for example, 20 %) is selected.

For example, the key usage positions of the two emergency communication terminals T1 and T2 that are currently communicating are both at 10000. Due to the insufficient amount of remaining keys, terminal T1 sends the terminal T2 the position of the fixed key to be used after using one key and one key. . Terminal T1 detects that the amount of keys consumed per second is 100, and the time for the two parties to communicate back and forth is 2 seconds, then T1 initiates an agreement to T2 that the two parties will use 10000+100×2×(1+ 20%) = key at 10240 for secure communication.

After T1 and T2 reach an agreement, when the location of the quantum key used by both parties is between 10000 and 10240, the one-time-one-pad encryption method is still used to encrypt the communication content of the two parties. When the quantum key is used to the 10240 location, the two parties will synchronously switch to using the key located at the 10240 address of the quantum key to secure the remaining part of this communication.

If the conversion from one industry-one-key to one-time-one key occurs during the process of service, the conversion initiator sends a conversion request to the opposite end, including the sequence number of the service data packet to start conversion. After the two parties agree, starting from the agreed business data packet, along the current fixed quantum key address, continue to encrypt and decrypt each business data packet in a one-time-one-key manner.

In the process of emergency communication, sometimes it is necessary to balance the high security of information and the amount of use of keys, coupled with the ever-changing state of the emergency communication site, on the issue of how to use keys, it is possible to use manual settings or complete program judgment. There is a problem. This embodiment comprehensively considers factors such as user pre-judgment and on-site judgment, key consumption and consumption rate, and allows the emergency communication terminal to calculate which compression and encryption method to use according to the parameter elements, so as to achieve balanced optimization of each element and better Safeguard the confidential communication process.

With the emergency communication method of the present invention, for special emergency communication occasions, "decentralization" + two-way flow high-strength security protection of emergency information can be realized based on quantum keys, so that the emergency information protected by encryption is no longer limited to "decentralization" of emergency information. "Central broadcast-terminal receiving" model; at the same time, a balanced scheme of data transmission security and real-time availability in emergency communication scenarios is also proposed.

Although the present invention has been described above through specific embodiments in conjunction with the accompanying drawings, those skilled in the art will readily recognize that the above-mentioned embodiments are merely exemplary, used to illustrate the principles of the present invention, and do not limit the scope of the present invention. As a limitation, those skilled in the art can make various combinations, modifications and equivalent substitutions to the above embodiments without departing from the spirit and scope of the present invention.

Claims (16)

1. A quantum key-based emergency communication method, comprising: Key distribution step: providing a shared quantum key K _i between each emergency communication terminal Ti in the plurality of emergency communication terminals and the quantum key supply service network S; The emergency information sending step: based on automatic or artificial triggering, the emergency communication terminal T _i uses the shared quantum key K _i to form the emergency information into encrypted data, and sends the encrypted data to the outside; and, The step of receiving emergency information: receiving the encrypted data, and using the shared quantum key K _i to obtain the emergency information from the encrypted data. 2. The emergency communication method according to claim 1, wherein the key distribution step is further set to: generating a quantum key in the quantum key supply service network S; establishing a wired connection between the quantum key supply service network S and the key charging terminal; and, Connect the emergency communication terminal Ti with the key filling terminal to obtain the shared quantum key K _{i .} 3. The emergency communication method according to claim 2, wherein the key distribution step further comprises: making the quantum key supply service network S periodically update the quantum key, thereby updating the emergency communication terminal T _i and the quantum key supply the step of the shared quantum key K _i in the service network S. 4. The emergency communication method of claim 1, wherein: The key distribution step is further configured to make the shared quantum key K _i of each emergency communication terminal T _i in the plurality of emergency communication terminals have the same shared quantum key K; and, The emergency information sending step is further configured to make one or more of the plurality of emergency communication terminals use the shared quantum key K to form the emergency information into the encrypted data, and send the encrypted data to the outside. the encrypted data. 5. The emergency communication method according to claim 4, wherein the emergency information receiving step is further configured to cause one or more of the plurality of emergency communication terminals to receive the encrypted data, and to utilize the encrypted data. The shared quantum key K obtains the emergency information from the encrypted data. 6. The emergency communication method of claim 5, wherein, The emergency information sending step is further set as: causing one or more of the plurality of emergency communication terminals to generate a random sequence code, send the random sequence code to the quantum key supply service network S, and apply for the use of the quantum key; The quantum key supply service network S determines the unused quantum key area according to the quantum key use application, and sends the start address and end address or start address and size of the quantum key area to the One or more of the plurality of emergency communication terminals, at the same time, correspond the random sequence code to the quantum key area, and mark the quantum key area as used; One or more of the plurality of emergency communication terminals use the shared quantum key K in the quantum key area corresponding to the random sequence code to form the emergency information into the encrypted data, and use the shared quantum key K in the quantum key area corresponding to the random sequence code. The encrypted data and the random sequence code are sent out together; And, the emergency information receiving step is further set to: Another or more of the emergency communication terminals receive the encrypted data and the random sequence code, and send the random sequence code to the quantum key supply service network S; The quantum key supply service network S sends the start address and end address or start address and size of the quantum key area to one or more of the emergency communication terminals according to the random sequence code; Another or more of the emergency communication terminals obtain the emergency information from the encrypted data using the shared quantum key K in the quantum key area corresponding to the random sequence code. 7. The emergency communication method according to claim 5, wherein the step of receiving the emergency information further comprises: causing another or more of the plurality of emergency communication terminals to send the emergency information to the information through a physical interface Receiver R steps. 8. The emergency communication method according to claim 4, wherein the emergency information receiving step is further configured to: make the quantum key supply service network S receive the encrypted data, use the shared quantum key K The emergency information is obtained from the encrypted data, and the emergency information is sent to the information receiver R. 9. The emergency communication method of claim 4, wherein the emergency information receiving step is further configured to: causing the information receiver R to receive the encrypted data; The secret chip storing the shared quantum key K is connected to the information receiver R to provide it with the shared quantum key K, and the information receiver R uses the shared quantum key K to obtain the obtain the emergency information from the encrypted data; or, Connect the security chip storing the shared quantum key K to the information receiver R to receive the encrypted data, obtain the emergency information from the encrypted data by using the shared quantum key K, and use the shared quantum key K to obtain the emergency information from the encrypted data. The emergency information is sent to the information receiver R. 10. The emergency communication method of claim 1, wherein, The key distribution step is further configured to make the shared quantum keys of each of the plurality of emergency communication terminals different from each other; The step of sending the emergency information is further configured to: one or more of the plurality of emergency communication terminals use the shared quantum key to form the emergency information into the first encrypted data, and send the information to the outside. the first encrypted data; The emergency information receiving step is further configured to: cause the quantum key supply service network S to receive the first encrypted data, and use the shared quantum key of one or more of the plurality of emergency communication terminals from all the emergency communication terminals. obtaining the emergency information from the first encrypted data, and using the shared quantum key of one or more of the plurality of emergency communication terminals to form the emergency information into second encrypted data, and converting the second encrypted data is sent to one or more of the plurality of emergency communication terminals; and another or more of the plurality of emergency communication terminals utilizes the shared quantum key from the second encrypted data Obtain the emergency information. 11. The emergency communication method according to any one of claims 4-10, wherein: The emergency information sending step further includes the step of compressing the emergency information to form compressed emergency information before encryption; and, The emergency information receiving step further includes the step of decompressing the compressed emergency information to obtain the emergency information after decryption. 12. The emergency communication method according to any one of claims 1-10, further comprising the step of determining the level of the emergency information as one of a first level, a second level and a third level, wherein : When the level of the emergency information is determined to be the first level, a one-time-one-pad encryption method is adopted for the emergency information; When the level of the emergency information is determined to be the third level, a one-in-one-one-key encryption method is adopted for the emergency information; When the level of the emergency information is determined to be the second level, according to the remaining amount and consumption rate of the shared quantum key, a one-time-one-pass or one-time-one-pass encryption method is selected for the emergency information. 13. The emergency communication method according to claim 12, wherein when the level of the emergency information is determined as the second level: When the remaining amount of the shared quantum key is greater than the first preset value, select the encryption method of one-time pad; The consumption rate of the shared quantum key in the current preset time period is not higher than the second preset value of the average consumption rate of the shared quantum key after the service is initiated, and the consumption rate of the shared quantum key When the remaining amount is greater than the third preset value, select the encryption method of one-time pad; When the remaining amount of the shared quantum key is less than the fourth preset value, an encryption method of one key and one key is selected. 14. The emergency communication method according to claim 13, wherein, in a one-time pad encryption mode, when the remaining amount of the shared quantum key is less than a fifth preset value, the emergency information is encrypted before encryption. to compress. 15. The emergency communication method according to claim 14, wherein the first preset value is 75%, the preset time period is 1 minute, the second preset value is 1/3, the The third preset value is 50%, the fourth preset value is 50%, and the fifth preset value is 20%. 16. The emergency communication method as claimed in claim 13, wherein, when switching between the one-time-one-pad encryption method and the one-in-one-one-pad encryption method, a prompt is given to the user, and the encryption method for switching is agreed upon. address of the shared quantum key.

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