WO2018072261A1

WO2018072261A1 - Information encryption method and device, information decryption method and device, and terminal

Info

Publication number: WO2018072261A1
Application number: PCT/CN2016/108024
Authority: WO
Inventors: 邹家须; 叶瑞权
Original assignee: 宇龙计算机通信科技(深圳)有限公司
Priority date: 2016-10-20
Filing date: 2016-11-30
Publication date: 2018-04-26
Also published as: CN106487659B; CN106487659A

Abstract

Disclosed are an information encryption method and device, an information decryption method and device, and a terminal. The information encryption method comprises: when an operation of sending instant communication information to a target receiving terminal is detected, encrypting the instant communication information so as to obtain a ciphertext data packet, wherein the ciphertext data packet comprises random numbers used for encryption processing, and ciphertext data obtained through encryption processing (102); and sending the ciphertext data packet to the target receiving terminal (104). By means of the technical solution, instant communication information can be transmitted after encryption, so that it is difficult for others to steal relevant information, thereby ensuring the security of transmission of the instant communication information and effectively guaranteeing the privacy of a user.

Description

Information encryption method and device, information decryption method and device, and terminal

This application claims priority to Chinese Patent Application No. 201610919705.2, entitled "Information Encryption Method and Apparatus, Information Decryption Method and Apparatus and Terminal", which was submitted to the Chinese Patent Office on October 20, 2016. The citations are incorporated herein by reference.

Technical field

The present invention relates to the field of information security technologies, and in particular, to an information encryption method, an information decryption method, an information encryption device, an information decryption device, and a terminal.

Background technique

With the continuous expansion of intelligent terminal functions and the diversification of its applications, smart terminals have become the norm for people's work and life. Instant messaging such as WeChat and QQ have become the main tools for people to communicate, but the existing ones. This kind of communication is carried out in the public network provided by the operator. The communication method is transmitted in clear text, and the chat record is also saved in clear text, which can be easily stolen by others, which brings great security risks to the user. In particular, for certain specific groups, such as government, institutions, scientific research and other classified units, the consequences of confidential information disclosure are unimaginable.

Therefore, how to ensure the security of information transmission has become a technical problem to be solved.

Summary of the invention

The invention is based on at least one of the above technical problems, and proposes a new information encryption scheme, which can encrypt and transmit instant communication information, making it difficult for others to steal relevant information, and ensuring the security of instant communication information transmission. , effectively protect user privacy.

The invention also proposes a new information decryption scheme, which can decrypt the received ciphertext data packet instantaneously, display it instantly, and instantly delete the read instant communication information, thereby effectively avoiding the leakage of the instant communication information.

In view of the above, the present invention provides an information encryption method, including: when detecting an operation of transmitting instant communication information to a target receiving end, encrypting the instant communication information to obtain a ciphertext data packet, where The ciphertext data packet includes a random number used by the encryption process and ciphertext data obtained by the encryption process; and the ciphertext data packet is sent to the target receiving end.

In the technical solution, when the operation of transmitting the instant communication information to the target receiving end is detected, the instant communication information is encrypted to obtain the ciphertext data packet, and the ciphertext data packet is sent to the target receiving end, where The ciphertext data packet includes the random number used in the encryption process and the ciphertext data obtained by the encryption process, so that it is difficult for others to decrypt the ciphertext data packet to steal relevant information, thereby ensuring the security of the instant communication information transmission, and effectively securing the data. User privacy.

In the above technical solution, preferably, the step of performing encryption processing on the instant communication information specifically includes: generating the random number, and calculating an encryption key of the instant communication information based on the random number; The encryption key encrypts the instant communication information by a symmetric encryption algorithm.

In the technical solution, by generating a random number and calculating an encryption key of the instant communication information based on the random number, the instant communication information is encrypted by the symmetric encryption algorithm using the encryption key, and the random number generated during the encryption is different, The obtained encryption keys are also different, so that the encryption key used when encrypting the instant communication information is different, which ensures the security of the instant communication information transmission to a greater extent, and the encryption key is randomly generated, without Both parties to the communication share the key in advance.

In any one of the foregoing technical solutions, preferably, before the step of performing the encryption processing on the instant messaging information, the method further includes: detecting whether the target receiving end has the decryption authority for the instant messaging information; The step of performing the encryption processing on the instant communication information when the target receiving end has the decryption authority; and outputting the prompt information when determining that the target receiving end does not have the decryption authority.

In the technical solution, by detecting whether the target receiving end has the decryption authority for the instant communication information, determining the target receiving end has the decryption authority, and then performing encryption processing to ensure the security of the instant communication information transmission while ensuring the security of the instant communication information transmission. The target receiving end can decrypt it to timely deliver the instant communication information, and avoid the embarrassing situation that the target receiving end receives the encrypted data packet but cannot decrypt. When determining that the target receiving end does not have the decrypting authority, the prompt information is output and sent. End users can timely understand the situation and handle it accordingly.

In any one of the above aspects, preferably, the step of detecting whether the target receiving end has the decrypting right of the instant messaging information comprises: acquiring the identifier information of the target receiving end; determining the identifier Whether the information matches the pre-stored identification information; when the identification information matches the pre-stored identification information, determining that the target receiving end has the decryption authority; and when the identifier information and the pre-storage When the identification information does not match, it is determined that the target receiving end does not have the decryption authority.

In the technical solution, it is determined whether the target receiving end has the decryption right for the instant communication information according to the identification information of the target receiving end, and the accuracy of the determination result of whether the target receiving end has the decrypting authority is ensured. The identification information and the pre-stored identification information may include a name of the target receiving end, an encryption and decryption capability parameter, and the like.

In any of the above technical solutions, preferably, the instant messaging information includes any one of the following: WeChat information, QQ information, MSN information.

According to a second aspect of the present invention, an information decryption method is provided, comprising: receiving a ciphertext data packet sent by a transmitting end, wherein the ciphertext data packet is an operation of the sending end detecting the sending of the instant messaging information And obtaining, by the encryption processing of the instant messaging information, the ciphertext data includes a random number used in the encryption process and ciphertext data obtained by the encryption process; and when receiving the view instruction of the ciphertext packet, the decryption station Determining the ciphertext data packet to obtain the instant messaging information corresponding to the ciphertext data packet, and displaying the instant messaging information corresponding to the ciphertext data packet, and deleting the instant when the instant messaging information is viewed Communication information.

In the technical solution, when receiving the ciphertext data packet sent by the transmitting end, when receiving the viewing instruction for the ciphertext data packet, decrypting the ciphertext data packet to obtain the instant communication information corresponding to the ciphertext data packet, and displaying The instant messaging information corresponding to the ciphertext data packet, and the instant messaging information is deleted when the instant messaging information is viewed, so that the received ciphertext data packet can be decrypted instantly, displayed instantly, and the read instant communication information is deleted immediately. , effectively avoiding the leakage of instant communication information.

In the above technical solution, preferably, the step of decrypting the ciphertext data packet specifically includes: extracting the random number from the ciphertext data packet, and calculating the ciphertext data based on the random number a decryption key of the packet; using the decryption key, decrypting the ciphertext data by a symmetric decryption algorithm.

In the technical solution, the ciphertext data packet decryption key is calculated based on the random number by extracting the random number from the ciphertext data packet, and the ciphertext data is decrypted by the symmetric decryption algorithm using the decryption key, without The shared key can decrypt the ciphertext packet.

In any one of the above aspects, preferably, the method further includes: storing the received ciphertext data packet to re-decrypt the secret when the viewing command of the ciphertext data packet is received again Text packet.

In the technical solution, by storing the ciphertext data packet, the instant communication information in the communication record is displayed in the form of a ciphertext data packet, and then decrypted in real time when needed for viewing, and the instant display ensures the instant communication information. Security to avoid user privacy leaks.

According to a third aspect of the present invention, an information encryption apparatus is provided, comprising: an encryption unit configured to perform encryption processing on the instant communication information when detecting an operation of transmitting instant communication information to a target receiving end to obtain a ciphertext data packet, wherein the ciphertext data packet includes a random number used by the encryption process and ciphertext data obtained by the encryption process; and the sending unit is configured to send the ciphertext data packet to the target receiving end.

In any one of the foregoing technical solutions, preferably, the encryption unit is specifically configured to: generate the random number, and calculate an encryption key of the instant communication information based on the random number; using the encryption key, The instant communication information is encrypted by a symmetric encryption algorithm.

In any one of the above aspects, preferably, the method further includes: a detecting unit, configured to detect whether the target receiving end has a decrypting authority for the instant messaging information; and the encrypting unit is specifically configured to be in the detecting Determining, by the unit, the encryption processing of the instant communication information when the target receiving end has the decryption authority; and the prompting unit is configured to output the prompt information when the detecting unit determines that the target receiving end does not have the decryption authority .

In any one of the foregoing technical solutions, the detecting unit is configured to: obtain the identification information of the target receiving end; determine whether the identification information matches the pre-stored identification information; and when the identification information is When the pre-stored identification information matches, determining that the target receiving end has the decryption authority; when the identifier information does not match the pre-stored identification information, determining that the target receiving end does not have the decryption Permissions.

According to a fourth aspect of the present invention, an information decryption apparatus is provided, comprising: a receiving unit, configured to receive a ciphertext data packet sent by a transmitting end, wherein the ciphertext data packet is detected by the transmitting end The operation of the instant communication information is obtained by encrypting the instant communication information, the ciphertext data includes a random number used in the encryption process and the ciphertext data obtained by the encryption process; and the processing unit is configured to receive the pair of the secret Decrypting the ciphertext data packet to obtain instant messaging information corresponding to the ciphertext data packet, and displaying the instant messaging information corresponding to the ciphertext data packet, and displaying the instant message When the communication information is viewed, the instant communication information is deleted.

In the above technical solution, preferably, the processing unit is specifically configured to: extract the random number from the ciphertext data packet, and calculate a decryption key of the ciphertext data packet based on the random number; The decryption key decrypts the ciphertext data by a symmetric decryption algorithm.

In any one of the above aspects, preferably, the method further includes: a storage unit configured to store the received ciphertext data packet, when the viewing command for the ciphertext data packet is received again, The ciphertext packet is re-decrypted.

According to a fifth aspect of the invention, there is provided a terminal, comprising: the information encryption device according to any one of the preceding claims; and the information decryption device according to any one of the preceding claims.

Through the above technical solution, the instant communication information can be encrypted, so that it is difficult for others to steal relevant information, and the security of the instant communication information transmission is ensured, and the communication parties can be decrypted without the shared key in advance, and can be displayed instantly. Instantly delete the instant messaging information after reading, effectively avoiding the leakage of instant communication information.

DRAWINGS

FIG. 1 shows a schematic flow chart of an information encryption method according to an embodiment of the present invention;

2 shows a schematic flow chart of an information decryption method according to an embodiment of the present invention;

FIG. 3 shows a schematic block diagram of an information encryption apparatus according to an embodiment of the present invention; FIG.

FIG. 4 shows a schematic block diagram of an information decryption apparatus according to an embodiment of the present invention; FIG.

Figure 5 shows a schematic block diagram of a terminal in accordance with an embodiment of the present invention;

FIG. 6 shows a schematic block diagram of a structure of a terminal according to an embodiment of the present invention.

detailed description

The present invention will be further described in detail below with reference to the drawings and specific embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a full understanding of the invention, but the invention may be practiced otherwise than as described herein. Limitations of the embodiments.

FIG. 1 shows a schematic flow chart of an information encryption method according to an embodiment of the present invention.

As shown in FIG. 1, an information encryption method according to an embodiment of the present invention includes:

Step 102: Perform an encryption process on the instant communication information to obtain a ciphertext data packet, where the ciphertext data packet includes a random number used for encryption processing, when detecting an operation of sending the instant communication information to the target receiving end. And ciphertext data obtained by encryption processing.

Step 104: Send the ciphertext data packet to the target receiving end.

FIG. 2 shows a schematic flow chart of an information decryption method in accordance with an embodiment of the present invention.

As shown in FIG. 2, an information decryption method according to an embodiment of the present invention includes:

Step 202: Receive a ciphertext data packet sent by the sending end, where the ciphertext data packet is obtained by encrypting the instant communication information when the sending end detects the operation of sending the instant communication information, where the secret is The text data includes a random number used for encryption processing and ciphertext data obtained by encryption processing.

Step 204: When receiving the viewing instruction for the ciphertext data packet, decrypt the ciphertext data packet to obtain instant communication information corresponding to the ciphertext data packet, and display the ciphertext data packet corresponding to Instant messaging information, and deleting the instant messaging information when viewing the instant messaging information ends.

FIG. 3 shows a schematic block diagram of an information encryption apparatus according to an embodiment of the present invention.

As shown in FIG. 3, an information encryption apparatus 300 according to an embodiment of the present invention includes an encryption unit 302 and a transmission unit 304.

The encryption unit 302 is configured to perform encryption processing on the instant communication information to obtain a ciphertext data packet when the operation of transmitting the instant communication information to the target receiving end is detected, wherein the ciphertext data packet includes an encryption process. The random number used and the ciphertext data obtained by the encryption process; the transmitting unit 304 is configured to transmit the ciphertext data packet to the target receiving end.

In any one of the foregoing technical solutions, preferably, the encryption unit 302 is specifically configured to: generate the random number, and calculate an encryption key of the instant communication information based on the random number; use the encryption key The instant communication information is encrypted by a symmetric encryption algorithm.

In any one of the foregoing technical solutions, the method further includes: a detecting unit 306, configured to detect whether the target receiving end has a decrypting authority for the instant messaging information; and the encrypting unit 302 is specifically configured to be in the The detecting unit determines an encryption process of the instant communication information when the target receiving end has the decryption authority; and the prompting unit 308 is configured to, when the detecting unit determines that the target receiving end does not have the decryption authority, Output prompt information.

In any one of the foregoing technical solutions, the detecting unit 306 is specifically configured to: obtain identification information of the target receiving end; determine whether the identification information matches pre-stored identification information; and when the identification information Determining, when the identifier information is matched with the pre-stored identification information, that the target receiving end has the decrypting authority; when the identifier information does not match the pre-stored identification information, determining that the target receiving end does not have the Decrypt permission.

FIG. 4 shows a schematic block diagram of an information decryption apparatus according to an embodiment of the present invention.

As shown in FIG. 4, an information decryption apparatus 400 according to an embodiment of the present invention includes a receiving unit 402 and a processing unit 404.

The receiving unit 402 is configured to receive the ciphertext data packet sent by the sending end, where the ciphertext data packet is obtained by encrypting the instant communication information when the sending end detects the operation of sending the instant communication information. The ciphertext data includes a random number used by the encryption process and ciphertext data obtained by the encryption process; the processing unit 404 is configured to decrypt the ciphertext data packet when receiving the view instruction of the ciphertext data packet, Obtaining the instant messaging information corresponding to the ciphertext data packet, displaying the instant messaging information corresponding to the ciphertext data packet, and deleting the instant messaging information when the viewing of the instant messaging information ends.

In the above technical solution, the processing unit 404 is specifically configured to: extract the random number from the ciphertext data packet, and calculate a decryption key of the ciphertext data packet based on the random number; The ciphertext data is decrypted by a symmetric decryption algorithm using the decryption key.

In any one of the foregoing technical solutions, preferably, the method further includes: a storage unit 406, configured to store the received ciphertext data packet, when the viewing command for the ciphertext data packet is received again Re-decrypting the ciphertext packet.

FIG. 5 shows a schematic block diagram of a terminal in accordance with an embodiment of the present invention.

As shown in FIG. 5, a terminal 500 according to an embodiment of the present invention includes: an information encryption device 300 as shown in FIG. 3; and an information decryption device 400 as shown in FIG.

The instant messaging information includes WeChat information and QQ information. The following is a description of the technical solution of the present invention by taking the WeChat information as an example.

In this embodiment, the WeChat encryption system includes: a system control module, a user input module, a data receiving module, a data sending module, a message display module, and a data storage module, and a security module.

The system control module is responsible for communication with other modules and maintains the operation of the entire application; the user input module processes input of user data; the data transmission module is responsible for transmitting data input by the user; and the data receiving module is responsible for receiving reception of message content. The message display module is responsible for displaying the content sent by the data sending module; the data storage module is responsible for saving the content sent by the data sending module; the security module is responsible for implementing the security function of WeChat, including random number generation, key generation, encryption and decryption, etc. The key generation algorithm is not disclosed to the public, and is built by the intelligent terminal manufacturer. It can be upgraded and updated later, and the encryption and decryption algorithm uses a symmetric algorithm.

The specific WeChat encryption sending process is:

(1) The system control module realizes input of sending data through a user input module;

(2) The system control module sends the user input data to the message display module for display;

(3) The system control module invokes the security module to complete the following operations: first generate a random number, generate an encryption key through a key generation algorithm, and then invoke an encryption algorithm to encrypt the data to be transmitted with the encryption key.

(4) The system control module invokes the data sending module to encapsulate the random number and the ciphertext data, and then transmits the data according to the transmission protocol, where the transmission protocol includes a TCP (Transmission Control Protocol) and a UDP (User Data Protocol). Datagram protocol);

(5) The system control module saves the sent data to the data storage module in cipher text state.

The process of receiving and decrypting WeChat encryption is:

(1) The system control module completes the reception of the message content through the data receiving module;

(2) The system control module parses the WeChat ciphertext data according to the transmission protocol, and saves the data to the data storage module;

(3) The system control module invokes the security module to perform the following operations: extracting the random number from the WeChat ciphertext data, generating the decryption key by the key generation algorithm, and then calling the decryption algorithm to decrypt the ciphertext data with the decryption key.

(4) The system control module sends the decrypted plaintext data to the message display module for display, and deletes the plaintext data when the viewing ends, so that when the chat record is viewed, the instant decryption, instant display, and burning are performed after reading.

In the above embodiment, the encryption key is randomly generated, the user does not need to manage the cumbersome key, and the communication party does not need to share the key in advance, thereby enhancing the user experience, and the key security of the secure communication and the secret storage key is based on the security module. It is built-in, can be customized and can be updated. The intelligent terminal algorithm with the same function of the same manufacturer can not be decrypted. The communication record is encrypted and stored. The smart terminal is out of the cipher text state, and the plain text cannot be obtained illegally, thus protecting the user's privacy. That is, the password update is sent once and the security is enhanced.

As shown in FIG. 6, FIG. 6 is a schematic block diagram of a structure of a mobile terminal according to an embodiment of the present invention, and the mobile terminal 600 shown in FIG. 6 can be used to implement the method implemented by the embodiments of the present invention shown in FIG. 1 and FIG. For the convenience of description, only parts related to the embodiments of the present invention are shown. Without specific details, please refer to the embodiments of the present invention shown in FIGS. 1 and 2. The mobile terminal 600 shown in FIG. 6 may include:

Processor 602 and memory 606 coupled to processor 602 via bus 604. The memory 606 is used to store program code, and the processor 602 is configured to call the program code stored in the memory 606 for performing the following operations:

When detecting an operation of transmitting the instant communication information to the target receiving end, encrypting the instant communication information to obtain a ciphertext data packet, wherein the ciphertext data packet includes a random number used for encryption processing and an encryption process Obtained ciphertext data;

Sending the ciphertext data packet to the target receiving end.

In the above technical solution, preferably, the processor 602 is further configured to:

Generating the random number, and calculating an encryption key of the instant messaging information based on the random number;

The instant communication information is encrypted by a symmetric encryption algorithm using the encryption key.

Detecting whether the target receiving end has the decryption authority for the instant messaging information;

And performing the encryption process on the instant communication information when determining that the target receiving end has the decryption authority;

When it is determined that the target receiving end does not have the decryption authority, the prompt information is output.

Obtaining identification information of the target receiving end;

Determining whether the identification information matches the pre-stored identification information;

Determining that the target receiving end has the decryption authority when the identifier information matches the pre-stored identifier information;

When the identification information does not match the pre-stored identification information, it is determined that the target receiving end does not have the decryption authority.

And receiving the ciphertext data packet sent by the sending end, where the ciphertext data packet is obtained by encrypting the instant communication information when the sending end detects the sending of the instant communication information, where the ciphertext data includes The random number used in the encryption process and the ciphertext data obtained by the encryption process;

Decrypting the ciphertext data packet to obtain the instant messaging information corresponding to the ciphertext data packet, and displaying the instant messaging information corresponding to the ciphertext data packet, when receiving the viewing command of the ciphertext data packet And deleting the instant messaging information when the viewing of the instant messaging information ends.

Extracting the random number from the ciphertext data packet, and calculating a decryption key of the ciphertext data packet based on the random number;

The ciphertext data is decrypted by a symmetric decryption algorithm using the decryption key.

The received ciphertext data packet is stored to re-decrypt the ciphertext data packet when the viewing command for the ciphertext data packet is received again.

The steps in the method of the embodiment of the present invention may be sequentially adjusted, merged, and deleted according to actual needs.

The units in the terminal in the embodiment of the present invention may be combined, divided, and deleted according to actual needs.

One of ordinary skill in the art can understand that all or part of the various methods of the above embodiments can be completed by a program to instruct related hardware, the program can be stored in a computer readable storage medium, and the storage medium includes read only Read-Only Memory (ROM), Random Access Memory (RAM), Programmable Read-Only Memory (PROM), Erasable Programmable Read Only Memory (Erasable Programmable Read Only Memory) EPROM), One-Time Programmable Read-Only Memory (OTPROM), Electronically-Erasable Programmable Read-Only Memory (EEPROM), Read-Only Disc (Compact Disc) Read-Only Memory (CD-ROM) or other optical disc storage, disk storage, magnetic tape storage, or any other medium readable by a computer that can be used to carry or store data.

The technical solution of the present invention is described in detail above with reference to the accompanying drawings. The technical solution of the present invention proposes a new information encryption scheme, which can encrypt the instant communication information, making it difficult for others to steal relevant information and ensure instant communication information. The security of transmission also proposes a new information decryption scheme, which can be decrypted without the need for the communication parties to share the key in advance, and can display instantly, instantly delete the read instant communication information, and effectively avoid the instant communication information. leakage.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

An information encryption method, comprising:

When detecting an operation of transmitting the instant communication information to the target receiving end, encrypting the instant communication information to obtain a ciphertext data packet, wherein the ciphertext data packet includes a random number used for encryption processing and an encryption process Obtained ciphertext data;

Sending the ciphertext data packet to the target receiving end.
The information encryption method according to claim 1, wherein the step of performing the encryption processing on the instant communication information comprises:

Generating the random number, and calculating an encryption key of the instant messaging information based on the random number;

The instant communication information is encrypted by a symmetric encryption algorithm using the encryption key.
The information encryption method according to claim 1, further comprising: before the step of performing the encryption processing on the instant communication information, further comprising:

Detecting whether the target receiving end has the decryption authority for the instant messaging information;

Performing the step of encrypting the instant communication information when determining that the target receiving end has the decryption authority;

When it is determined that the target receiving end does not have the decryption authority, the prompt information is output.
The information encryption method according to claim 3, wherein the step of detecting whether the target receiving end has the decryption authority for the instant communication information comprises:

Obtaining identification information of the target receiving end;

Determining whether the identification information matches the pre-stored identification information;

Determining that the target receiving end has the decryption authority when the identifier information matches the pre-stored identifier information;

When the identification information does not match the pre-stored identification information, it is determined that the target receiving end does not have the decryption authority.
The information encryption method according to any one of claims 1 to 4, wherein the instant communication information comprises any one of the following:

WeChat information, QQ information, MSN information.
An information decryption method, comprising:

And receiving the ciphertext data packet sent by the sending end, where the ciphertext data packet is obtained by encrypting the instant communication information when the sending end detects the sending of the instant communication information, where the ciphertext data includes The random number used in the encryption process and the ciphertext data obtained by the encryption process;

Decrypting the ciphertext data packet to obtain the instant messaging information corresponding to the ciphertext data packet, and displaying the instant messaging information corresponding to the ciphertext data packet, when receiving the viewing command of the ciphertext data packet And deleting the instant messaging information when the viewing of the instant messaging information ends.
The information decryption method according to claim 6, wherein the step of decrypting the ciphertext data packet specifically includes:

Extracting the random number from the ciphertext data packet, and calculating a decryption key of the ciphertext data packet based on the random number;

The ciphertext data is decrypted by a symmetric decryption algorithm using the decryption key.
The information decryption method according to claim 6 or 7, further comprising:

The received ciphertext data packet is stored to re-decrypt the ciphertext data packet when the viewing command for the ciphertext data packet is received again.
An information encryption device, comprising:

The encryption unit is configured to, when detecting an operation of sending the instant communication information to the target receiving end, encrypting the instant communication information to obtain a ciphertext data packet, where the ciphertext data packet includes an encryption processing Random number and ciphertext data obtained by encryption processing;

And a sending unit, configured to send the ciphertext data packet to the target receiving end.
The information encryption device according to claim 9, wherein the encryption unit is specifically configured to:

Generating the random number, and calculating an encryption key of the instant messaging information based on the random number;

The instant communication information is encrypted by a symmetric encryption algorithm using the encryption key.
The information encryption device according to claim 9, further comprising:

a detecting unit, configured to detect whether the target receiving end has a decryption authority for the instant messaging information;

The encryption unit is specifically configured to perform encryption processing on the instant communication information when the detecting unit determines that the target receiving end has the decryption authority;

The prompting unit is configured to output prompt information when the detecting unit determines that the target receiving end does not have the decryption authority.
The information encryption device according to claim 11, wherein the detecting unit is specifically configured to:

Obtaining identification information of the target receiving end;

Determining whether the identification information matches the pre-stored identification information;

Determining that the target receiving end has the decryption authority when the identifier information matches the pre-stored identifier information;

When the identification information does not match the pre-stored identification information, it is determined that the target receiving end does not have the decryption authority.
An information decryption device, comprising:

a receiving unit, configured to receive a ciphertext data packet sent by the sending end, where the ciphertext data packet is obtained by encrypting, by the sending end, the instant communication information when detecting an operation of sending the instant communication information, where The ciphertext data includes a random number used in the encryption process and ciphertext data obtained by the encryption process;

a processing unit, configured to decrypt the ciphertext data packet when the ciphertext data packet is received, to obtain instant messaging information corresponding to the ciphertext data packet, and display the ciphertext data packet Corresponding instant messaging information, and deleting the instant messaging information when viewing the instant messaging information ends.
The information decryption apparatus according to claim 13, wherein the processing unit is specifically configured to:

Extracting the random number from the ciphertext data packet, and calculating a decryption key of the ciphertext data packet based on the random number;

The ciphertext data is decrypted by a symmetric decryption algorithm using the decryption key.
The information decryption method according to claim 13 or 14, further comprising:

And a storage unit configured to store the received ciphertext data packet to re-decrypt the ciphertext data packet when the viewing command for the ciphertext data packet is received again.
A terminal, comprising:

The information encryption device according to any one of claims 9 to 12; and the information decryption device according to any one of claims 13 to 14.