CN113595877B - Instant communication method based on block chain - Google Patents
Instant communication method based on block chain Download PDFInfo
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- CN113595877B CN113595877B CN202110837520.8A CN202110837520A CN113595877B CN 113595877 B CN113595877 B CN 113595877B CN 202110837520 A CN202110837520 A CN 202110837520A CN 113595877 B CN113595877 B CN 113595877B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L51/00—User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail
- H04L51/04—Real-time or near real-time messaging, e.g. instant messaging [IM]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1402—Saving, restoring, recovering or retrying
- G06F11/1446—Point-in-time backing up or restoration of persistent data
- G06F11/1448—Management of the data involved in backup or backup restore
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/602—Providing cryptographic facilities or services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1073—Registration or de-registration
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/50—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols using hash chains, e.g. blockchains or hash trees
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Abstract
The invention provides an instant messaging method based on a block chain, which comprises the following steps: the method comprises the steps that a user registers at a management node for subsequent communication, a sending user generates communication information and sends the communication information to the management node, the management node obtains an identification of a receiving user, whether the receiving user is a registered user is judged according to the identification of the receiving user, if the receiving user is not the registered user, the operation is stopped, if the receiving user is the registered user, whether instant communication applications of the sending user and the receiving user are the same is judged, if the instant communication applications are the same, communication information is encrypted, the communication information is sent to the receiving user through a domain instant communication server, if the instant communication applications are different, the communication information is sent to the receiving user through the domain instant communication server of the receiving user, and the encrypted communication information is decrypted by the receiving user. The instant messaging method based on the block chain can solve the problem that personal information of a user is leaked by a traditional instant messaging method, and can realize interaction among different instant messaging applications.
Description
Technical Field
The present invention relates to the field of block chain technology, and in particular, to an instant messaging method based on a block chain.
Background
With the continuous development of internet technology, instant messaging through the internet becomes an essential important part in daily life of people. The method has the advantages that characters, documents, voice and videos can be transmitted in real time to communicate among a plurality of users through the Internet, and the real-time communication provides great convenience for daily life, work and study. The existing instant messaging tools have serious defects though having huge user groups, and as the instant messaging tools are widely applied, the danger that personal privacy or information is leaked exists, the existing instant messaging tools mainly use a centralized platform, the situations that the information is tampered, deleted and maliciously attacked exist, and the personal privacy and the communication information safety of users are seriously threatened. Moreover, in the existing life, users using different instant messaging applications cannot communicate with each other, and in order to realize interaction through the instant messaging applications, both users have to download and use the same instant messaging application, which is very inconvenient and causes poor user experience. Therefore, it is necessary to design an instant messaging method based on block chains.
Disclosure of Invention
The invention aims to provide an instant messaging method based on a block chain, which can solve the problem that personal information of a user is leaked by a traditional instant messaging method, improve the safety of instant messaging, realize interaction among different instant messaging applications and facilitate the use of the user.
In order to achieve the purpose, the invention provides the following scheme:
an instant messaging method based on a block chain is applied to an instant messaging system based on the block chain, the system comprises a management node and a plurality of domain instant messaging servers, the plurality of domain instant messaging servers correspond to a plurality of instant messaging applications, and the management node is used for receiving and processing information of the domain instant messaging servers;
the method comprises the following steps:
step 1: a user sends a registration request to a management node through a domain instant messaging server, the management node responds to the registration request to execute registration processing aiming at the user, registers the user as a registered user, records relevant information of the user and writes the information into a block chain;
and 2, step: a sending user generates communication information, encrypts the communication information, sends the encrypted communication information to a management node through a domain instant communication server, the management node acquires the encrypted communication information and decrypts the encrypted communication information, acquires an identifier of a receiving user according to the decrypted communication information, judges whether the receiving user is a registered user according to the identifier of the receiving user, cancels the transmission of the communication information if the receiving user is not the registered user, and feeds back communication failure to the sending user;
and 3, step 3: if the receiving user is a registered user, judging whether the instant messaging application of the sending user is the same as the instant messaging application of the receiving user according to the communication information, if so, encrypting the decrypted communication information, and sending the encrypted communication information to the receiving user through a domain instant messaging server;
and 4, step 4: if the instant messaging application of the sending user is different from the instant messaging application of the receiving user, the management node encrypts the communication information and sends the encrypted communication information to the receiving user through a domain instant messaging server corresponding to the instant messaging application of the receiving user;
and 5: and the receiving user decrypts the encrypted communication information.
Optionally, in step 1, the user sends a registration request to the management node through the domain instant messaging server, and the management node executes registration processing for the user in response to the registration request, registers the user as a registered user, records relevant information of the user, and writes the relevant information into the block chain, specifically:
the user sends a registration request to a management node through a domain instant messaging server, wherein the registration request comprises identity information of the user, the management node generates a unique identifier and an asymmetric key pair for the user according to the identity information of the user, the asymmetric key pair comprises a public key and a private key, the identifier and the asymmetric key are sent to the user, the management node records a server identifier of the domain instant messaging server, the server identifier corresponds to the domain instant messaging server and an instant messaging application, the identity information, the identifier and the server identifier of the user are encrypted through the symmetric key of the management node, and the encrypted server identifier and the server identifier are written into a block chain to complete the registration of the user.
Optionally, in step 2, the sending user generates and encrypts communication information, sends the encrypted communication information to the management node through the domain instant messaging server, the management node obtains and decrypts the encrypted communication information, obtains an identifier of the receiving user according to the decrypted communication information, determines whether the receiving user is a registered user according to the identifier of the receiving user, and cancels the transmission of the communication information if the receiving user is not a registered user, and feeds back a communication failure to the sending user, specifically:
the method comprises the steps that a sending user generates communication information according to requirements, a public key of the sending user is obtained, the communication information is encrypted through the public key, the encrypted communication information and the public key of the sending user are sent to a management node through a domain instant messaging server, the management node obtains a private key of the sending user according to the public key of the sending user, the encrypted communication information is decrypted through the private key of the sending user, the communication information comprises an identification of a receiving user, an identification of the sending user and communication content, the management node judges whether the receiving user is a registered user or not according to the identification of the receiving user, if the receiving user is not the registered user, transmission of the communication information is stopped, and communication failure is fed back to the sending user.
Optionally, in step 3, if the receiving user is a registered user, determining whether the instant messaging application of the sending user is the same as the instant messaging application of the receiving user according to the communication information, if so, encrypting the decrypted communication information, and sending the encrypted communication information to the receiving user through the domain instant messaging server, specifically:
if the receiving user is judged to be the registered user, acquiring a public key of the receiving user and a server identification of the receiving user according to the identification of the receiving user, acquiring a server identification of the sending user according to the identification of the sending user, judging whether the server identification of the receiving user is the same as the server identification of the sending user or not, if so, judging that the instant messaging application of the sending user is the same as the instant messaging application of the receiving user, encrypting the communication content through the public key of the receiving user, sending the encrypted communication content to the instant messaging application of the receiving user through a domain instant messaging server corresponding to the server identification, encrypting the encrypted communication content, the public key of the receiving user and the server identifications of the receiving user and the sending user through a symmetric key, and writing the encrypted communication content, the public key of the receiving user and the server identifications of the receiving user and the sending user into a block chain as a backup record.
Optionally, in step 4, if the instant messaging application of the sending user is different from the instant messaging application of the receiving user, the management node sends the encrypted communication information to the receiving user through the domain instant messaging server corresponding to the instant messaging application of the receiving user, which specifically includes:
if the instant messaging application of the sending user is judged to be different from the instant messaging application of the receiving user, the communication content is encrypted through the public key of the receiving user, the management node sends the encrypted communication content to the instant messaging application of the receiving user through the domain instant messaging server corresponding to the server identification of the receiving user, the encrypted communication content, the public key of the receiving user, the server identification of the receiving user and the server identification of the sending user are encrypted through the symmetric key, and the encrypted communication content, the public key of the receiving user, the server identification of the receiving user and the server identification of the sending user are written into the block chain as backup records.
Optionally, in step 5, the receiving user decrypts the encrypted communication information, specifically:
and the receiving user acquires the private key of the receiving user, and the encrypted communication content is decrypted through the private key to obtain the communication content.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects: the invention provides an instant communication method based on a block chain, which comprises the steps that a user sends a registration request to a management node through a domain instant communication server, the management node responds to the registration request to execute registration processing aiming at the user, registers the user as a registered user, records relevant information of the user and writes the information into the block chain; the sending user generates communication information, encrypts the communication information, sends the encrypted communication information to a management node through a domain instant messaging server, the management node acquires the encrypted communication information and decrypts the encrypted communication information, acquires an identifier of a receiving user according to the decrypted communication information, judges whether the receiving user is a registered user or not according to the identifier of the receiving user, cancels the transmission of the communication information if the receiving user is not the registered user, and feeds back communication failure to the sending user; if the receiving user is a registered user, judging whether the instant messaging application of the sending user is the same as the instant messaging application of the receiving user according to the communication information, if so, encrypting the decrypted communication information, and sending the encrypted communication information to the receiving user through a domain instant messaging server; if the instant messaging application of the sending user is different from the instant messaging application of the receiving user, the management node encrypts the communication information and sends the encrypted communication information to the receiving user through a domain instant messaging server corresponding to the instant messaging application of the receiving user; the receiving user decrypts the encrypted communication information; the method can realize the mutual communication among different instant messaging applications through the management node, is convenient for a user to use, ensures the safety of the communication information because the communication information is in an encrypted state in the transmission process, prevents the communication information from being leaked, and can check the communication information because the transmission information of the communication information is provided with backup records and is stored in a block chain.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
Fig. 1 is a schematic flow chart of an instant messaging method based on a block chain according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide an instant messaging method based on a block chain, which can solve the problem that personal information of a user is leaked by a traditional instant messaging method, improve the safety of instant messaging, realize interaction among different instant messaging applications and facilitate the use of the user.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1, an instant messaging method based on a block chain according to an embodiment of the present invention is applied to an instant messaging system based on a block chain, where the system includes a management node and multiple domain instant messaging servers, where multiple domain instant messaging servers correspond to multiple instant messaging applications, the management node is configured to receive and process information of the domain instant messaging servers, and the system further includes a mobile terminal, where the mobile terminal is configured to set multiple instant messaging applications;
the method comprises the following steps:
step 1: a user sends a registration request to a management node through a domain instant messaging server, the management node responds to the registration request to execute registration processing aiming at the user, registers the user as a registered user, records relevant information of the user and writes the information into a block chain;
step 2: the sending user generates communication information, encrypts the communication information, sends the encrypted communication information to a management node through a domain instant messaging server, the management node acquires the encrypted communication information and decrypts the encrypted communication information, acquires an identifier of a receiving user according to the decrypted communication information, judges whether the receiving user is a registered user or not according to the identifier of the receiving user, cancels the transmission of the communication information if the receiving user is not the registered user, and feeds back communication failure to the sending user;
and step 3: if the receiving user is a registered user, judging whether the instant messaging application of the sending user is the same as the instant messaging application of the receiving user according to the communication information, if so, encrypting the decrypted communication information, and sending the encrypted communication information to the receiving user through a domain instant messaging server;
and 4, step 4: if the instant messaging application of the sending user is different from the instant messaging application of the receiving user, the management node encrypts the communication information and sends the encrypted communication information to the receiving user through a domain instant messaging server corresponding to the instant messaging application of the receiving user;
and 5: and the receiving user decrypts the encrypted communication information.
The system can also comprise a management node, a central server and a plurality of middle-domain instant messaging servers, wherein the central server can be in communication connection with the plurality of domain instant messaging servers, so that the various domain instant messaging servers can send respective corresponding data to the central server, the data sharing is realized through the central server, the interaction among the instant messaging servers in different domains is realized through the central server, and the management node can realize the communication interaction among different instant messaging applications through controlling the central server.
In step 1, a user sends a registration request to a management node through a domain instant messaging server, the management node responds to the registration request to execute registration processing aiming at the user, registers the user as a registered user, records relevant information of the user, and writes the relevant information into a block chain, specifically:
the user sends a registration request to a management node through a domain instant messaging server, wherein the registration request comprises identity information of the user, the management node generates a unique identifier and an asymmetric key pair for the user according to the identity information of the user, the asymmetric key pair comprises a public key and a private key, the identifier and the asymmetric key are sent to the user, the management node records a server identifier of the domain instant messaging server, the server identifier corresponds to the domain instant messaging server and an instant messaging application, the identity information, the identifier and the server identifier of the user are encrypted through the symmetric key of the management node, and the encrypted server identifier and the server identifier are written into a block chain to complete the registration of the user.
When a user registers in an instant messaging server of a certain domain, the management node may allocate a unique system identifier to each user in the entire instant messaging system to represent the identity of the user in the instant messaging system, and establish a mapping relationship between the system identifier and an initial identifier that the user requests to register, and the user may have different application identifiers in different instant messaging applications, for example, the ID of the user in a first server may be aaaaaaaa, and the ID in a second server may be bbbbbbbb.
In step 2, the sending user generates communication information and encrypts the communication information, the encrypted communication information is sent to the management node through the domain instant communication server, the management node acquires the encrypted communication information and decrypts the encrypted communication information, an identifier of the receiving user is acquired according to the decrypted communication information, whether the receiving user is a registered user is judged according to the identifier of the receiving user, if not, the transmission of the communication information is cancelled, and communication failure is fed back to the sending user, specifically:
the method comprises the steps that a sending user generates communication information according to requirements, a public key of the sending user is obtained, the communication information is encrypted through the public key, the encrypted communication information and the public key of the sending user are sent to a management node through a domain instant messaging server, the management node obtains a private key of the sending user according to the public key of the sending user, the encrypted communication information is decrypted through the private key of the sending user, the communication information comprises an identification of a receiving user, an identification of the sending user and communication content, the management node judges whether the receiving user is a registered user or not according to the identification of the receiving user, if the receiving user is not the registered user, transmission of the communication information is stopped, and communication failure is fed back to the sending user.
In step 3, if the receiving user is a registered user, judging whether the instant messaging application of the sending user is the same as the instant messaging application of the receiving user according to the communication information, if so, encrypting the decrypted communication information, and sending the encrypted communication information to the receiving user through the domain instant messaging server, wherein the steps are as follows:
if the receiving user is judged to be a registered user, acquiring a public key of the receiving user and a server identification of the receiving user according to the identification of the receiving user, acquiring a server identification of the sending user according to the identification of the sending user, judging whether the server identification of the receiving user is the same as the server identification of the sending user, if so, judging that the instant messaging application of the sending user is the same as the instant messaging application of the receiving user, encrypting the communication content through the public key of the receiving user, sending the encrypted communication content to the instant messaging application of the receiving user through a domain instant messaging server corresponding to the server identification, encrypting the encrypted communication content, the public key of the receiving user and the server identifications of the receiving user and the sending user through a symmetric key, and writing the encrypted communication content, the public key of the receiving user and the server identifications of the receiving user as backup records into a block chain.
In step 4, if the instant messaging application of the sending user is different from the instant messaging application of the receiving user, the management node sends the encrypted communication information to the receiving user through a domain instant messaging server corresponding to the instant messaging application of the receiving user, specifically:
if the instant messaging application of the sending user is judged to be different from the instant messaging application of the receiving user, the communication content is encrypted through the public key of the receiving user, the management node sends the encrypted communication content to the instant messaging application of the receiving user through the domain instant messaging server corresponding to the server identification of the receiving user, the encrypted communication content, the public key of the receiving user, the server identification of the receiving user and the server identification of the sending user are encrypted through the symmetric key, and the encrypted communication content, the public key of the receiving user, the server identification of the receiving user and the server identification of the sending user are written into the block chain as backup records.
In step 5, the receiving user decrypts the encrypted communication information, specifically:
and the receiving user acquires the private key of the receiving user, and decrypts the encrypted communication content through the private key to obtain the communication content.
Information should be hashed before it is written to the blockchain.
The communication content specifically comprises one or more of the following information: text information, audio information, and video information.
The instant communication method based on the block chain comprises the steps that a user sends a registration request to a management node through a domain instant communication server, the management node responds to the registration request to execute registration processing aiming at the user, registers the user as a registered user, records relevant information of the user and writes the information into the block chain; a sending user generates communication information, encrypts the communication information, sends the encrypted communication information to a management node through a domain instant communication server, the management node acquires the encrypted communication information and decrypts the encrypted communication information, acquires an identifier of a receiving user according to the decrypted communication information, judges whether the receiving user is a registered user according to the identifier of the receiving user, cancels the transmission of the communication information if the receiving user is not the registered user, and feeds back communication failure to the sending user; if the receiving user is a registered user, judging whether the instant messaging application of the sending user is the same as the instant messaging application of the receiving user according to the communication information, if so, encrypting the decrypted communication information, and sending the encrypted communication information to the receiving user through a domain instant messaging server; if the instant messaging application of the sending user is different from the instant messaging application of the receiving user, the management node encrypts the communication information and sends the encrypted communication information to the receiving user through a domain instant messaging server corresponding to the instant messaging application of the receiving user; the receiving user decrypts the encrypted communication information; the method can realize the mutual communication among different instant messaging applications through the management node, is convenient for a user to use, ensures the safety of the communication information because the communication information is in an encrypted state in the transmission process, prevents the communication information from being leaked, and can check the communication information because the transmission information of the communication information is provided with backup records and is stored in a block chain.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (6)
1. An instant messaging method based on a block chain is applied to an instant messaging system based on the block chain, and is characterized in that the system comprises a management node and a plurality of domain instant messaging servers, the plurality of domain instant messaging servers correspond to a plurality of instant messaging applications, and the management node is used for receiving and processing information of the domain instant messaging servers;
the method comprises the following steps:
step 1: a user sends a registration request to a management node through a domain instant messaging server, the management node responds to the registration request to execute registration processing aiming at the user, registers the user as a registered user, records relevant information of the user and writes the information into a block chain;
step 2: the sending user generates communication information, encrypts the communication information, sends the encrypted communication information to a management node through a domain instant messaging server, the management node acquires the encrypted communication information and decrypts the encrypted communication information, acquires an identifier of a receiving user according to the decrypted communication information, judges whether the receiving user is a registered user or not according to the identifier of the receiving user, cancels the transmission of the communication information if the receiving user is not the registered user, and feeds back communication failure to the sending user;
and step 3: if the receiving user is a registered user, judging whether the instant messaging application of the sending user is the same as the instant messaging application of the receiving user according to the communication information, if so, encrypting the decrypted communication information, and sending the encrypted communication information to the receiving user through a domain instant messaging server;
and 4, step 4: if the instant messaging application of the sending user is different from the instant messaging application of the receiving user, the management node encrypts the communication information and sends the encrypted communication information to the receiving user through a domain instant messaging server corresponding to the instant messaging application of the receiving user;
and 5: and the receiving user decrypts the encrypted communication information.
2. The instant messaging method according to claim 1, wherein in step 1, the user sends a registration request to the management node through the domain instant messaging server, the management node performs a registration process for the user in response to the registration request, registers the user as a registered user, records the related information of the user, and writes the information into the block chain, specifically:
the method comprises the steps that a user sends a registration request to a management node through a domain instant messaging server, wherein the registration request comprises identity information of the user, the management node generates a unique identifier and an asymmetric key pair for the user according to the identity information of the user, the asymmetric key pair comprises a public key and a private key, the identifier and the asymmetric key are sent to the user, the management node records a server identifier of the domain instant messaging server, the domain instant messaging server sends the registration request, the server identifier corresponds to the domain instant messaging server and an instant messaging application, the identity information, the identifier and the server identifier of the user are encrypted through a symmetric key of the management node, and the server identifier are written into a block chain to complete registration of the user.
3. The instant messaging method according to claim 2, wherein in step 2, the sending user generates and encrypts the communication information, sends the encrypted communication information to the management node through the domain instant messaging server, the management node obtains and decrypts the encrypted communication information, obtains an identifier of the receiving user according to the decrypted communication information, determines whether the receiving user is a registered user according to the identifier of the receiving user, cancels the transmission of the communication information if the receiving user is not a registered user, and feeds back a communication failure to the sending user, specifically:
the method comprises the steps that a sending user generates communication information according to requirements, a public key of the sending user is obtained, the communication information is encrypted through the public key, the encrypted communication information and the public key of the sending user are sent to a management node through a domain instant messaging server, the management node obtains a private key of the sending user according to the public key of the sending user, the encrypted communication information is decrypted through the private key of the sending user, the communication information comprises an identification of a receiving user, an identification of the sending user and communication content, the management node judges whether the receiving user is a registered user or not according to the identification of the receiving user, if the receiving user is not the registered user, transmission of the communication information is stopped, and communication failure is fed back to the sending user.
4. The instant messaging method according to claim 3, wherein in step 3, if the receiving user is a registered user, it is determined whether the instant messaging application of the sending user is the same as the instant messaging application of the receiving user according to the messaging information, and if the instant messaging application of the sending user is the same as the instant messaging application of the receiving user, the decrypted messaging information is encrypted, and the encrypted messaging information is sent to the receiving user through the domain instant messaging server, specifically:
if the receiving user is judged to be the registered user, acquiring a public key of the receiving user and a server identification of the receiving user according to the identification of the receiving user, acquiring a server identification of the sending user according to the identification of the sending user, judging whether the server identification of the receiving user is the same as the server identification of the sending user or not, if so, judging that the instant messaging application of the sending user is the same as the instant messaging application of the receiving user, encrypting the communication content through the public key of the receiving user, sending the encrypted communication content to the instant messaging application of the receiving user through a domain instant messaging server corresponding to the server identification, encrypting the encrypted communication content, the public key of the receiving user and the server identifications of the receiving user and the sending user through a symmetric key, and writing the encrypted communication content, the public key of the receiving user and the server identifications of the receiving user and the sending user into a block chain as a backup record.
5. The instant messaging method according to claim 4, wherein in step 4, if the instant messaging application of the sending user is different from the instant messaging application of the receiving user, the management node sends the encrypted messaging information to the receiving user through the domain instant messaging server corresponding to the instant messaging application of the receiving user, specifically:
if the instant messaging application of the sending user is judged to be different from the instant messaging application of the receiving user, the communication content is encrypted through the public key of the receiving user, the management node sends the encrypted communication content to the instant messaging application of the receiving user through the domain instant messaging server corresponding to the server identification of the receiving user, the encrypted communication content, the public key of the receiving user, the server identification of the receiving user and the server identification of the sending user are encrypted through the symmetric key, and the encrypted communication content, the public key of the receiving user, the server identification of the receiving user and the server identification of the sending user are written into the block chain as backup records.
6. The instant messaging method according to claim 5, wherein in step 5, the receiving user decrypts the encrypted communication information, specifically:
and the receiving user acquires the private key of the receiving user, and decrypts the encrypted communication content through the private key to obtain the communication content.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110837520.8A CN113595877B (en) | 2021-07-23 | 2021-07-23 | Instant communication method based on block chain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110837520.8A CN113595877B (en) | 2021-07-23 | 2021-07-23 | Instant communication method based on block chain |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113595877A CN113595877A (en) | 2021-11-02 |
| CN113595877B true CN113595877B (en) | 2022-08-30 |
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