CN114666081A - Early warning message output method, early warning message distribution device and related equipment - Google Patents

Abstract

The application provides an early warning message output method, an early warning message distribution device and related equipment, wherein the early warning message output method comprises the following steps: receiving an early warning message sent by network equipment, wherein the early warning message is an early warning message signed by early warning message issuing equipment by using a private key; acquiring a block chain certificate of the early warning message issuing equipment from a alliance chain, and acquiring a public key of the early warning message issuing equipment based on the block chain certificate; using the public key to carry out signature verification on the early warning message; and outputting the early warning message when the signature verification is passed. The method and the device can improve the safety of issuing the early warning message.

Description

Early warning message output method, early warning message distribution method, device and related equipment

technical field

The present application relates to the field of blockchain technology, and more particularly, to a method for outputting an early warning message, a method for distributing an early warning message, an apparatus and related equipment.

Background technique

Before the occurrence of public emergencies, the public emergency warning message issuing department will issue early warning messages to the public through mobile phone short messages to inform the public of the imminent public emergency and inform the public of preventive measures to reduce the loss of life and property caused by the incident. . Early warning messages are generally sent through cell broadcast short messages. Its features include: it can send messages to millions of users in near real-time in the language required by the designated area, and all early warning messages must be managed by the early warning message The center performs signature processing, but if the early warning message is tampered with when it is transmitted to the early warning information management center, it will be difficult to determine the attribution of responsibility, resulting in poor security in issuing the early warning message.

SUMMARY OF THE INVENTION

Embodiments of the present application provide a method for outputting an early warning message, a method for distributing an early warning message, an apparatus, and related equipment, so as to solve the problem of poor security in issuing early warning messages.

In order to solve the above problems, this application is implemented as follows:

In a first aspect, an embodiment of the present application provides a method for outputting an early warning message, which is executed by a terminal, and the method includes:

Receive an early warning message sent by a network device, where the early warning message is an early warning message signed by an early warning message issuing device using a private key;

Obtain the blockchain certificate of the early warning message issuing device from the alliance chain, and obtain the public key of the early warning message issuing device based on the blockchain certificate;

Using the public key to perform signature verification on the warning message;

If the signature verification is passed, the warning message is output.

In a second aspect, an embodiment of the present application provides a method for distributing an early warning message, which is executed by a device for distributing an early warning message, and the method includes:

Sign the alert message with the private key;

distributing said warning message of said signature;

Wherein, the public key corresponding to the private key is included in the blockchain certificate, and the blockchain certificate is managed by a consortium chain composed of the warning message issuing device and the supervision device corresponding to the supervision department.

In a third aspect, an embodiment of the present application further provides a device for outputting an early warning message, including:

a receiving module, configured to receive an early warning message sent by a network device, where the early warning message is an early warning message signed by an early warning message issuing device using a private key;

a first obtaining module, configured to obtain the blockchain certificate of the early warning message issuing device from the alliance chain, and obtain the public key of the early warning message issuing device based on the blockchain certificate;

a verification module, configured to perform signature verification on the warning message using the public key;

The output module is configured to output the warning message when the signature verification is passed.

In a fourth aspect, an embodiment of the present application further provides an apparatus for distributing an early warning message, including:

The signature module is used to sign the warning message with the private key;

a distribution module for distributing the signed warning message;

Wherein, the public key corresponding to the private key is included in the blockchain certificate, and the blockchain certificate is managed by a consortium chain composed of the warning message issuing device and the supervision device corresponding to the supervision department.

In a fifth aspect, an embodiment of the present application further provides a communication device, including: a transceiver, a memory, a processor, and a program stored in the memory and running on the processor; characterized in that, the processing A device for reading the program in the memory to implement the steps in the method according to the first aspect; or, the steps in the method according to the second aspect.

In a sixth aspect, an embodiment of the present application further provides a readable storage medium for storing a program, and when the program is executed by a processor, the steps in the method described in the first aspect above are implemented, or the second method described above is implemented. A step in the method of an aspect.

In the embodiment of this application, the blockchain certificate of the early warning message issuing device is obtained from the consortium chain, the public key of the early warning message issuing device is obtained based on the blockchain certificate, and the public key is used to The pre-warning message carries out signature verification, and in the case of passing the signature verification, the pre-warning message is output, which can verify the identity of the pre-warning message issuing device and the integrity of the pre-warning message. The attribution of responsibility is unclear due to tampering, thereby improving the security of the warning message.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present application more clearly, the following briefly introduces the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some of the drawings in the present application. In the embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative labor.

1 is a schematic flowchart of a method for outputting an early warning message provided by an embodiment of the present application;

2 is a schematic flowchart of a method for distributing an early warning message provided by an embodiment of the present application;

3 is a schematic structural diagram of an early warning message output system applicable to an embodiment of the present application;

4 is one of the schematic structural diagrams of the early warning message output device provided by the embodiment of the present application;

5 is a second schematic structural diagram of an early warning message output device provided by an embodiment of the present application;

6 is one of the schematic structural diagrams of the early warning message distribution device provided by the embodiment of the present application;

FIG. 7 is a second schematic structural diagram of an early warning message distribution device provided by an embodiment of the present application;

FIG. 8 is a schematic structural diagram of a communication device provided by the implementation of this application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

The terms "first", "second", etc. in the embodiments of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. Furthermore, the terms "comprising" and "having" and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those expressly listed Rather, those steps or units may include other steps or units not expressly listed or inherent to these processes, methods, products or devices. In addition, the use of "and/or" in this application means at least one of the connected objects, such as A and/or B and/or C, means A alone, B alone, C alone, and both A and B are present, Both B and C exist, both A and C exist, and 7 cases where A, B, and C all exist.

Referring to FIG. 1 , FIG. 1 is a schematic flowchart of a method for outputting an early warning message provided by an embodiment of the present application. The early warning message output method shown in FIG. 1 can be executed by a terminal.

As shown in Figure 1, the method for outputting an early warning message may include the following steps:

Step 101: Receive an early warning message sent by a network device, where the early warning message is an early warning message signed by the early warning message issuing device using a private key.

The terminal (also referred to as User Equipment (UE)) may be a mobile phone, a tablet computer (TabletPersonal Computer), a laptop computer (Laptop Computer), a personal digital assistant (Personal DigitalAssistant, PDA), a mobile Internet device (Mobile Internet access device) Internet Device, MID), wearable device (WearableDevice) or vehicle-mounted device, etc. The network device may be a base station, an access and mobility management function (Access and Mobility Management Function, AMF), a relay, an access point, or other network elements.

The above-mentioned early warning message issuing device may be a device used by a warning message issuing department (Cell BroadcastEntity, CBE) to issue early warning messages, and the early warning message issuing department (for example, the Meteorological Bureau, the Earthquake Bureau, etc.) Broadcast message, send, query, delete, set broadcast short message priority and control broadcast area, etc. The above network equipment can be deployed in the operator's network as a CBC (Cell Broadcast Center, cell broadcast center). CBC, as an integral part of the mobile network, is managed by the basic telecom operator. The base station loads and maps geographic information to valid wireless cells, and sends short messages generated by CBE to the UE through the wireless access network.

The signature of the warning message may be a result obtained by signing the hash value after the warning message issuing device uses a hash algorithm to hash the content of the warning message.

Step 102: Obtain the blockchain certificate of the early warning message issuing device from the alliance chain, and obtain the public key of the early warning message issuing device based on the blockchain certificate.

Among them, the above-mentioned alliance chain can be a blockchain jointly managed by several institutions. For example, in the above-mentioned alliance chain, an early warning message publishing device can be designated as an accounting node, and the generation of each block is jointly performed by all pre-selected nodes using a consensus mechanism. It is decided that other access nodes can read the information on the chain, but do not participate in the accounting process. The alliance chain uses distributed ledgers and distributed consensus technology to form a distributed database where data cannot be tampered with, which also solves the problem of multi-party trust. The above-mentioned warning message issuing device, as an accounting node, can publish its own public key on the alliance chain, and the terminal can access the alliance chain to obtain the public key of the above-mentioned warning message issuing device.

In addition, step 101 and step 102 are not required in order of execution. For example, step 101 can be executed first to obtain the corresponding early warning message issuing device through the received early warning message, so as to search for the block of the early warning message issuing device in the alliance chain Chain certificate to obtain the public key of the early warning message issuing device, or, step 102 can also be performed first, the terminal can cache the alliance chain in advance, and obtain the public key of all early warning message issuing devices, or it can be received by receiving After the early warning message, the public key of the corresponding early warning message issuing device is obtained from the online alliance chain, which is not limited in this application.

Step 103: Use the public key to perform signature verification on the warning message.

Step 104: In the case that the signature verification is passed, output the warning message.

Wherein, the above-mentioned manner of outputting the early warning message may be a method of reminding the early warning message on the terminal, such as voice broadcast, vibration, ringing, message pop-up window, short message prompt and the like. If the signature verification is passed, the integrity of the warning message and the identity of the warning message issuing device can be guaranteed.

In the embodiment of this application, the blockchain certificate of the early warning message issuing device is obtained from the consortium chain, the public key of the early warning message issuing device is obtained based on the blockchain certificate, and the public key is used for the The pre-warning message performs signature verification, and in the case of passing the signature verification, the pre-warning message is output, which can verify the identity of the pre-warning message issuing device and the integrity of the pre-warning message. The attribution of responsibility is unclear due to tampering, thereby improving the security of issuing the warning message.

In addition, the public key is used to perform signature verification on the received early warning message signed by the early warning message issuing device using the private key, and when the signature verification is passed, the early warning message is output, so that the early warning message can be directly sent from the The pre-warning message issuing device signs and issues it, so as to avoid the situation that the pre-warning message management center cannot issue the pre-warning message in time due to the issue of the pre-warning message management center, thereby improving the timeliness of the pre-warning message.

Optionally, the warning message may include the name of the warning message issuing department corresponding to the warning message issuing device;

In step 102, obtaining the blockchain certificate of the early warning message issuing device from the alliance chain, and obtaining the public key of the early warning message issuing device based on the blockchain certificate, may include:

Obtain the blockchain certificate of the early warning message issuing device in the alliance chain according to the name, and obtain the public key of the early warning message issuing device based on the blockchain certificate.

The name and public key of the above-mentioned early warning message issuing device may be in a corresponding relationship, and the early warning message issuing device may be used as an accounting node in the consortium chain to write the public key of the early warning message issuing device to the consortium chain through a consensus mechanism On the above, the terminal can access the alliance chain and find the corresponding public key according to the name of the warning message issuing device, so as to realize the signature verification of the warning message. The access users of the above-mentioned alliance chain can be all terminals in the preset area, for example: even if they leave their own registered service area, the user terminal that moves to another service area can access the alliance chain and obtain the warning message issued. the public key of the device, and use the public key to perform signature verification on the received early warning message.

In this embodiment, the public key of the early warning message issuing device is obtained in the alliance chain through the name of the warning message issuing department corresponding to the warning message issuing device, and the public key of the early warning message issuing device can be obtained by accessing the alliance chain , it can avoid the situation that only the terminal preinstalled with the public key can perform signature verification on the warning message and then output it, thereby increasing the number of terminals to which the warning message is successfully delivered.

Optionally, obtaining the blockchain certificate of the early warning message issuing device in the alliance chain according to the name, and obtaining the public key of the early warning message issuing device based on the blockchain certificate, including:

From the multiple blockchain certificates included in the alliance chain, look up the blockchain certificate of the warning message issuing device, where the blockchain certificate includes the name and public key of the warning message issuing department.

Among them, the above blockchain certificate can be searched by the name of the warning message issuing department. For example, the above alliance chain can be cached in advance, and the blockchain certificates of all warning message issuing departments can be obtained, so as to obtain the public keys of all warning message issuing departments. The above name in the above warning message obtains the public key of the warning message issuing department corresponding to the above warning message issuing device; or, after receiving the above warning message, the corresponding warning can be obtained on the alliance chain according to the above name in the above warning message The blockchain certificate of the message issuing department, so as to obtain the public key of the early warning message issuing department corresponding to the above-mentioned early warning message issuing device, which is not limited in this embodiment.

The above blockchain certificate may be a self-signed X.509 certificate or a certificate based on a custom format. Regardless of the certificate format, the blockchain certificate should contain the public key of the warning message issuing device, the name of the warning message issuing department corresponding to the warning message issuing device, the validity period of the certificate, the status of the certificate, etc. The early warning message issuing device generates the blockchain certificate and marks the blockchain certificate as valid, and acts as a billing node to initiate transactions. The nodes with billing rights on the alliance chain use the consensus mechanism to The blockchain certificate is written into the consortium chain.

In this embodiment, the public key of the early warning message issuing device is obtained in the consortium chain through the name of the early warning message issuing department corresponding to the early warning message issuing device, so that the terminal can obtain the early warning message issuing device by accessing the consortium chain The public key of the corresponding early warning message issuing department realizes the signature verification of the early warning message, so that the terminals in the early warning message issuing area can complete the signature verification of the early warning message, preventing roaming users from being in another service area. If the warning message cannot be verified, the success rate of delivering the warning message to the terminal can be improved.

Optionally, the early warning message also includes a message sending count and a message sending time stamp;

Before using the public key to perform signature verification on the early warning message in step 103, the early warning message output method may further include the following steps:

In the case that the time stamp conforms to the preset range and the count is greater than the count of the warning message last output by the terminal, the name of the warning message issuing department corresponding to the warning message issuing device is acquired.

The time stamp sent by the above message is compared with the current time of the user terminal. If the time interval is too far, it is determined that the early warning message is a replay attack, and the count sent by the above message is compared with the previous warning message output by the terminal. Comparing the counts, if the count of the current warning message is less than or equal to the count of the previous warning message, it can also be determined that the warning message is a replay attack, and the warning message of the replay attack is not output.

In this embodiment, by verifying the timestamp and count of the early warning message before using the public key to perform signature verification on the early warning message, when the timestamp conforms to a preset range and the count is greater than In the case of the count of early warning messages output by the terminal last time, obtain the name of the early warning message issuing department corresponding to the early warning message issuing device, and then obtain the public key of the early warning message issuing device according to the name, and send the message through the message. Timestamps and counts validate alert messages, preventing attackers from replaying attacks.

Referring to FIG. 2 , FIG. 2 is a schematic flowchart of a method for distributing an early warning message provided by an embodiment of the present application. The early warning message distribution method shown in FIG. 2 may be executed by an early warning message issuing device.

As shown in FIG. 2 , the method for distributing an early warning message may include the following steps:

Step 201: Sign the warning message with the private key.

Step 202, distributing the signed warning message;

Wherein, the public key corresponding to the private key is included in the blockchain certificate, and the blockchain certificate is managed by a consortium chain composed of the warning message issuing device and the supervision device corresponding to the supervision department.

Optionally, the early warning message may include the name of the early warning message issuing department corresponding to the early warning message issuing device.

Optionally, the early warning message distribution method may further include the following steps:

A blockchain certificate is generated, and the blockchain certificate is published to the alliance chain, wherein the blockchain certificate includes the name and public key of the warning message issuing department corresponding to the warning message issuing device.

Optionally, the early warning message may further include a message sending count and a message sending time stamp.

It should be noted that this embodiment is an implementation of an early warning message issuing device corresponding to the above method embodiment, therefore, reference may be made to the relevant description in the above method embodiment, and the same beneficial effects can be achieved. In order to avoid repeated descriptions, detailed descriptions are omitted here.

The various optional implementation manners introduced in the embodiments of the present application may be implemented in combination with each other under the condition that they do not conflict with each other, or may be implemented independently, which are not limited in the embodiments of the present application.

For ease of understanding, an example is described below:

Referring to FIG. 3 , FIG. 3 is a structural diagram of an early warning message output system applicable to the embodiment of the present application. As shown in FIG.

Among them, a plurality of early warning message issuing devices 31 have respective corresponding early warning message issuing departments.

The warning message output method can include the following processes:

Each early warning message issuing device 31 directly signs the early warning message with its own private key, and sends the signed early warning message to the operator network 32, and the operator network 32 selects according to the sending requirements in the received early warning message. The base station in the corresponding area performs cell broadcast, and the user terminal 33 performs signature verification on the signed early warning message according to the public key of the early warning message issuing device.

Wherein, the sending request can be obtained through the content of the received signed early warning message. For example, the warning message issuing device uses its own private key to sign the content of the warning message, and its format is as follows:

MESSAGE|COUNT|TIMESTAMP|NAME|AREA|HASH ALG ID|SIGN ALG ID;

Here | represents the concatenation of information, MESSAGE represents the warning message, COUNT represents the count of the message sent, TIMESTAMP represents the timestamp when the message was sent, NAME represents the name of the warning message issuing department, AREA represents the broadcast area of the warning message, HASH ALG ID uses To indicate the used hash algorithm, SIGN ALG ID is used to indicate the used signature algorithm, and the warning message of the signature is as follows:

MESSAGE|COUNT|TIMESTAMP|NAME|AREA|HASH ALG ID|SIGN ALG ID|SIGNATURE;

Among them, SIGNATURE represents the result obtained after the hash value is signed after hashing the content to be signed by using the hash algorithm.

Wherein, the broadcast area of the early warning message represented by AREA can be understood as the sending requirement followed by the operator network 32 selecting base stations in the corresponding area to perform cell broadcast.

The signature verification of the signed early warning message by the user terminal 33 according to the public key of the early warning message issuing device 31 may specifically include the following process: after the user terminal 33 receives the signed early warning message, it first verifies the time Whether the stamp is within an acceptable range, and if so, determines whether the counter is higher than the counter of the last received alert message, and if so, determines that the alert message is not a replay message; the user terminal 33 then searches for locally stored alliances If you can't find the name of the warning message issuing department, update the alliance chain from the Internet. If you find the warning message issuing department name in the updated alliance chain, you can find the corresponding public key and use this public key Check the warning message. If it is successful, the warning message will be displayed. Otherwise, the warning message will not be displayed. If the name of the warning message issuing department cannot be found in the updated alliance chain, the warning message will not be displayed. In this way, the early warning message can be verified through the cooperation of the timestamp and the counter, and the early warning message determined to be a replayed message is not displayed, thereby preventing an attacker from replaying the previous round of early warning message replay attacks.

Among them, the alliance chain can be composed of the warning message issuing device 31 of the warning message issuing department and the supervision device of the regulatory department. The public key of the warning message issuing device 31 is written into the alliance chain through the consensus mechanism of the alliance chain based on the blockchain certificate, and the user terminal 33 can obtain the public key of the warning message issuing department by accessing the alliance chain, thereby realizing the verification of the warning message . The early warning message issuing device 31 needs to generate a blockchain certificate and mark the blockchain certificate as valid. The early warning message issuing device 31 acts as a billing node to initiate transactions. The nodes with billing rights on the alliance chain use the consensus mechanism. The blockchain certificate is written into the consortium chain. In addition, the user terminal 33 may also include user terminals registered in other service areas. For roaming user terminals located in the broadcast area of the warning message, the public key of the warning message issuing device may also be obtained by accessing the alliance chain. , so as to realize the signature verification of the warning message.

In this embodiment, the early warning message issuing device 31 directly signs the early warning message with its own private key, and sends the signed early warning message to the operator network 32, and the operator network 32 receives the early warning according to the The broadcast area of the message selects the base station in the corresponding area for cell broadcast, and the user terminal 33 verifies the early warning message according to the public key of the early warning message issuing device 31; the public key of the early warning message issuing device 31 is based on the blockchain certificate. The consensus mechanism is written into the alliance chain, and the user terminal 33 can obtain the public key of the warning message issuing device 31 by accessing the alliance chain, so as to realize the signature verification of the warning message, determine the identity of the advance message issuing device and the warning The integrity of the message does not need to set up a special warning message management center, which can overcome the problems of single point failure and unclear responsibility in the existing technology.

Referring to FIG. 4 , FIG. 4 is one of the structural diagrams of an early warning message output device provided by an embodiment of the present application. As shown in FIG. 4 , the warning message output device 400 includes:

A receiving module 401, configured to receive an early warning message sent by a network device, where the early warning message is an early warning message signed by the early warning message issuing device using a private key;

The first obtaining module 402 is configured to obtain the public key of the early warning message issuing device from the alliance chain;

A verification module 403, configured to perform signature verification on the warning message using the public key;

The output module 404 is configured to output the warning message when the signature verification is passed.

Optionally, the warning message includes the name of the warning message issuing department corresponding to the warning message issuing device;

The first obtaining module 402 may be specifically used for:

Obtain the public key of the warning message issuing device in the alliance chain according to the name.

Optionally, the obtaining the public key of the early warning message issuing device in the alliance chain according to the name may include:

From the multiple blockchain certificates included in the alliance chain, look up the blockchain certificate of the warning message issuing device, where the blockchain certificate includes the name and public key of the warning message issuing department.

Optionally, the early warning message also includes a message sending count and a message sending time stamp;

As shown in FIG. 5 , the warning message output device 400 may further include:

The second obtaining module 405 is configured to obtain the name of the target warning message issuing department when the time stamp conforms to a preset range and the count is greater than the count of the warning message last output by the terminal.

The early warning message output device 400 can implement each process of the method embodiment of FIG. 1 in the embodiment of the present application, and achieve the same beneficial effect, and to avoid repetition, details are not repeated here.

The early warning message output device 500 can implement each process of the method embodiment of FIG. 1 in the embodiment of the present application, and achieve the same beneficial effect, and to avoid repetition, details are not repeated here.

Referring to FIG. 6, FIG. 6 is one of the structural diagrams of an early warning message distribution apparatus provided by an embodiment of the present application. As shown in FIG. 6 , the warning message distribution apparatus 600 includes:

A signature module 601, used to sign the warning message with a private key;

a distribution module 602, configured to distribute the signed warning message;

Wherein, the public key corresponding to the private key is included in the alliance chain.

Optionally, the early warning message includes the name of the early warning message issuing department corresponding to the early warning message issuing device.

Optionally, as shown in FIG. 7 , the early warning message distribution apparatus 600 may further include:

The generating module 603 is configured to generate a blockchain certificate and publish the blockchain certificate to the alliance chain, wherein the blockchain certificate includes the name and public key of the warning message issuing department corresponding to the warning message issuing device .

Optionally, the early warning message may further include a message sending count and a message sending time stamp.

The early warning message distribution apparatus 600 can implement each process of the method embodiment of FIG. 2 in the embodiment of the present application, and achieve the same beneficial effect. To avoid repetition, details are not described here.

The embodiments of the present application also provide a communication device. Referring to FIG. 8 , the communication device may include a processor 801 , a memory 802 , and a program 8021 stored on the memory 802 and executable on the processor 801 .

In the case where the communication device is a terminal, when the program 8021 is executed by the processor 801, any steps in the method embodiment corresponding to FIG. 1 can be implemented and the same beneficial effects can be achieved, which will not be repeated here.

When the communication device is an early warning message issuing device, when the program 8021 is executed by the processor 801, any steps in the method embodiment corresponding to FIG. 2 can be implemented and the same beneficial effects can be achieved, which will not be repeated here.

Those of ordinary skill in the art can understand that all or part of the steps of implementing the methods of the above embodiments can be completed by program instructions related to hardware, and the program can be stored in a readable medium. Embodiments of the present application further provide a readable storage medium, where a computer program is stored on the readable storage medium, and when the computer program is executed by a processor, any one of the method embodiments corresponding to FIG. 1 or FIG. 2 can be implemented. steps, and can achieve the same technical effect, in order to avoid repetition, it is not repeated here.

The storage medium is, for example, a read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a magnetic disk or an optical disk, and the like.

The above are the preferred implementations of the embodiments of the present application. It should be pointed out that for those skilled in the art, without departing from the principles described in the present application, several improvements and modifications can also be made. These improvements and Retouching should also be considered within the scope of protection of this application.

Claims (12)

1. A method for outputting an early warning message, executed by a terminal, is characterized in that, comprising: Receive an early warning message sent by a network device, where the early warning message is an early warning message signed by an early warning message issuing device using a private key; Obtain the blockchain certificate of the early warning message issuing device from the alliance chain, and obtain the public key of the early warning message issuing device based on the blockchain certificate; Using the public key to perform signature verification on the warning message; If the signature verification is passed, the warning message is output. 2. The method according to claim 1, wherein the warning message comprises the name of the warning message issuing department corresponding to the warning message issuing device; The obtaining the blockchain certificate of the early warning message issuing device from the alliance chain, and obtaining the public key of the early warning message issuing device based on the blockchain certificate, includes: Obtain the blockchain certificate of the early warning message issuing device in the alliance chain according to the name, and obtain the public key of the early warning message issuing device based on the blockchain certificate. 3. The method according to claim 2, wherein the block chain certificate of the early warning message issuing device is obtained in a consortium chain according to the name, and the early warning message is obtained based on the block chain certificate Publish the device's public key, including: From the multiple blockchain certificates included in the alliance chain, look up the blockchain certificate of the warning message issuing device, where the blockchain certificate includes the name and public key of the warning message issuing department. 4. The method of claim 2, wherein the early warning message further comprises a count of message sending and a time stamp of message sending; Before performing signature verification on the warning message using the public key, the method further includes: In the case that the time stamp conforms to the preset range and the count is greater than the count of the warning message last output by the terminal, the name of the warning message issuing department corresponding to the warning message issuing device is acquired. 5. A method for distributing an early warning message, executed by an early warning message issuing device, comprising: Sign the alert message with the private key; distributing said warning message of said signature; Wherein, the public key corresponding to the private key is included in the blockchain certificate, and the blockchain certificate is managed by a consortium chain composed of the warning message issuing device and the supervision device corresponding to the supervision department. 6 . The method of claim 5 , wherein the early warning message includes the name of an early warning message issuing department corresponding to the early warning message issuing device. 7 . 7. The method of claim 6, wherein the method further comprises: A blockchain certificate is generated, and the blockchain certificate is published to the alliance chain, wherein the blockchain certificate includes the name and public key of the warning message issuing department corresponding to the warning message issuing device. 8. The method of claim 6, wherein the early warning message further comprises a count of message sending and a time stamp of message sending. 9. An early warning message output device, characterized in that, comprising: a receiving module, configured to receive an early warning message sent by a network device, where the early warning message is an early warning message signed by an early warning message issuing device using a private key; a first obtaining module, configured to obtain the blockchain certificate of the early warning message issuing device from the alliance chain, and obtain the public key of the early warning message issuing device based on the blockchain certificate; a verification module, configured to perform signature verification on the warning message using the public key; The output module is configured to output the warning message when the signature verification is passed. 10. An early warning message distribution device, characterized in that, comprising: The signature module is used to sign the warning message with the private key; a distribution module for distributing the signed warning message; Wherein, the public key corresponding to the private key is included in the alliance chain. 11. A communication device, comprising: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; characterized in that, the processor is configured to read data stored in the memory The program implements the steps in the early warning message output method according to any one of claims 1 to 4, or the steps in the early warning message distribution method according to any one of claims 5 to 8. 12. A readable storage medium for storing a program, wherein, when the program is executed by a processor, the steps in the method for outputting an early warning message as claimed in any one of claims 1 to 4 are realized, or, Steps in the early warning message distribution method as claimed in any one of claims 5 to 8 are implemented.

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