WO2018113756A1

WO2018113756A1 - Sending method, control method, sending end and receiving end in instant messaging

Info

Publication number: WO2018113756A1
Application number: PCT/CN2017/117842
Authority: WO
Inventors: 陈耀攀
Original assignee: 北京奇虎科技有限公司
Priority date: 2016-12-21
Filing date: 2017-12-21
Publication date: 2018-06-28

Abstract

Disclosed in the present invention discloses a sending method, control method, sending end and receiving end in instant messaging. The method comprises: an instant messaging sending end obtains an instant message; the instant messaging sending end adds first extension information to the instant message, so as to obtain the processed instant message; and the instant messaging sending end sends the processed instant message to an instant messaging receiving end, so that the instant messaging receiving end controls, according to the first extension information, an operation permission of the instant message. In addition, the present invention also relates a sending method, a viewing method and a viewing control method and a device thereof for instant messaging. Negative effects such that instant message is propagated willfully and chat records are stolen caused when the instant message is processed at will by an instant message receiver can be avoided, and accordingly, the technical effects for improving the security of an instant messaging process are achieved.

Description

Instant communication sending method, control method, transmitting end and receiving end

Technical field

The present invention relates to the field of communications technologies, and in particular, to an instant communication sending method, an instant communication control method, a transmitting end and a receiving end, and an instant messaging message sending, viewing, viewing control method and device thereof.

Background technique

At present, with the continuous development of the Internet, instant communication tools such as WeChat and Fetion have become the communication tools frequently used by Internet users in their lives and work. However, with the popularization of instant messaging tools, various security issues have also arisen, such as: instant messaging is arbitrarily spread, chat records, audio and video are easily stolen by third parties, etc., resulting in the privacy of instant information is not protected, Security is very low. Therefore, the security issue of instant messaging has become an important issue that needs to be solved urgently.

At the same time, with the development of communication technology, the function of instant communication software is continuously strengthened. Because it can realize online chat and communication, it is convenient and fast, so it has been widely used. Through instant messaging software, not only can instant messages such as text, pictures, and expressions be transmitted, but also audio and video can be transmitted on the fly. Therefore, instant messaging software, as a communication platform, has the characteristics of large amount of information storage and high privacy.

In the process of use, due to the immediacy of instant communication, the sending message is usually displayed directly on the other party's communication platform, the privacy is not well protected, the security is very low, and the historical message stored on the instant message and the platform is It can be easily stolen, but usually the message on the platform is private and does not want to be seen by a third person, or stolen. However, the current usage status is as long as the login password is used to log in to the personal instant messaging software, the communication The historical chat records on the software will be easily browsed, copied, forwarded, etc., and the privacy of the information will not be guaranteed. Therefore, how to improve the security performance of instant messaging and ensure the privacy of instant information is the current instant communication. The problem that the field needs to solve.

Summary of the invention

In view of the above problems, the present invention provides an instant communication transmitting method, an instant communication control method, a transmitting end, and a receiving end that overcome the above problems or at least partially solve the above problems.

In a first aspect, an embodiment of the present invention provides an instant messaging sending method, including: an instant messaging sender acquires an instant message; and the instant messaging sender adds first extension information to the instant message, thereby obtaining the processed The instant messaging sender sends the processed instant message to the instant messaging receiving end, so that the instant messaging receiving end implements the operation authority on the instant message based on the first extended information. control.

In a second aspect, an embodiment of the present invention provides an instant communication control method, including: an instant communication receiving end receives a message sent by an instant communication sending end; and the instant communication receiving end reads the message by the instant communication sending end The first extension information is added; the instant communication receiving end controls the operation authority of the message according to the first extension information.

In a third aspect, an embodiment of the present invention provides an instant messaging transmitting end, including: at least one processor; and at least one memory communicably connected to the at least one processor; the at least one memory includes a processor An executable instruction, when the processor-executable instructions are executed by the at least one processor, causing the instant messaging sender to perform at least the following operations: obtaining an instant message; adding first extended information to the instant message And obtaining the processed instant message; sending the processed instant message to an instant messaging receiving end, where the instant messaging receiving end implements the instant message based on the first extended information Control of operational permissions.

In a fourth aspect, an embodiment of the present invention provides an instant messaging receiving end, including: at least one processor; and at least one memory communicably connected to the at least one processor; the at least one memory includes a processor An executable instruction, when the processor-executable instructions are executed by the at least one processor, causing the instant messaging receiver to perform at least the following operations: receiving an instant message sent by a sender; reading the instant message The first extension information added by the instant messaging sender; the control of the operation authority of the instant message is implemented according to the first extension information.

In a fifth aspect, a computer program, including computer readable code, is provided in an embodiment of the present invention. When the instant messaging sender runs the computer readable code, the method described in the first aspect is caused to be performed.

In a sixth aspect, a computer program is provided in the embodiment of the present invention, comprising computer readable code, when the instant communication receiving end runs the computer readable code, causing the method described in the second aspect to be performed.

In a seventh aspect, the embodiment of the present invention provides a computer readable medium, wherein the computer program according to the fifth aspect or the sixth aspect is stored.

In an eighth aspect, an embodiment of the present application provides a method for sending an instant messaging message, where the method includes: obtaining a time key of an instant message to be sent, where the time key is used to limit that the to-be-sent instant message can be viewed. Time period; encrypting the to-be-sent instant message according to the time key to generate an encrypted message; sending the encrypted message to a receiver, transmitting the time key to a server, and using the server according to the time-dense The key controls whether the recipient can view the encrypted message.

According to a ninth aspect, the present invention provides an instant messaging message viewing method, which is applied to an instant messaging receiving end, the method comprising: receiving an encrypted message encrypted according to a time key, wherein the time key is used to limit the encrypted message a time period that can be viewed; in response to viewing the viewing operation of the encrypted message, generating and transmitting a key request to the server, the key requesting to obtain the time key of the encrypted message; receiving the server response The feedback information of the key request, the feedback information is generated by the server according to the request time of the key request and the time key sent by the instant communication sending end, when the request time exceeds the time secret The feedback information is information indicating that the encrypted message is invalid, and the feedback information is the time key when the request time is within a time range corresponding to the time key; The feedback information is responsive to the viewing operation according to the parsing result.

According to a tenth aspect, the present invention provides an instant messaging message viewing control method, which is applied to a server, and the method includes: receiving a key request for acquiring an encrypted message time key sent by an instant communication receiving end;

And comparing, by the instant messaging receiver, the request time of the time key to the time range corresponding to the time key; if the request time exceeds the time range, rejecting the instant messaging The time receiving key is issued by the receiving end, so that the instant communication receiving end cannot decrypt and view the encrypted message; if the request time does not exceed the time range, the time key is issued to the instant communication receiving end, so that the instant The communication receiving end decrypts and views the encrypted message according to the time key.

In an eleventh aspect, the present invention provides an instant messaging transmitting end, comprising: at least one processor; and at least one memory communicably coupled to the at least one processor; the at least one memory comprising a processor Executing instructions, when the processor-executable instructions are executed by the at least one processor, causing the instant messaging sender to perform at least the following operations: obtaining a time key of an instant message to be sent, the time key The time limit for limiting the to-be-sent instant message can be viewed; the instant message to be sent is encrypted according to the time key to generate an encrypted message; the encrypted message is sent to the receiver, and the time key is sent to The server controls, by the server, whether the recipient can view the encrypted message according to the time key.

According to a twelfth aspect, the present invention provides an instant messaging receiving end, comprising: at least one processor; and at least one memory communicably connected to the at least one processor; the at least one memory comprising a processor Executing instructions, when the processor-executable instructions are executed by the at least one processor, causing the instant messaging receiver to perform at least the following: receiving an encrypted message encrypted according to a time key, the time secret a key for limiting a time period during which the encrypted message can be viewed; in response to viewing a viewing operation of the encrypted message, generating and transmitting a key request to a server, the key requesting the time for acquiring the encrypted message Receiving, by the server, feedback information in response to the key request, the feedback information being generated by the server according to the request time of the key request and the time key sent by the sending end, when the request is When the time exceeds the time range corresponding to the time key, the feedback information is information indicating that the encrypted message is invalid. The feedback information is the time key when the request time is within a time range corresponding to the time key; the feedback information is parsed, and the viewing operation is responded according to the parsing result.

In a thirteenth aspect, the present invention provides a server comprising: at least one processor; and at least one memory communicably coupled to the at least one processor; the at least one memory comprising processor executable instructions An instruction executable by the processor by the at least one processor When executed, causing the server to perform at least the following operations: receiving a key request for acquiring an encrypted message time key sent by the instant messaging receiving end; and requesting the instant communication receiving end to request the time key and the time The time range corresponding to the key is compared; when the request time exceeds the time range, the time key is denied to be issued to the instant communication receiving end, so that the instant communication receiving end cannot decrypt and view the encrypted message; When the request time does not exceed the time range, the time key is issued to the instant communication receiving end, so that the instant communication receiving end decrypts and views the encrypted message according to the time key.

In a fourteenth aspect, a computer program is provided in an embodiment of the present invention, comprising computer readable code, when the instant communication transmitting end runs the computer readable code, causing the method described in the eighth aspect to be performed.

In a fifteenth aspect, a computer program is provided in the embodiment of the present invention, comprising computer readable code, when the instant communication receiving end runs the computer readable code, causing the method described in the ninth aspect to be performed.

In a sixteenth aspect, a computer program is provided in an embodiment of the present invention, comprising computer readable code, when the server runs the computer readable code, causing the method described in the tenth aspect to be performed.

In a seventeenth aspect, the invention provides a computer readable medium storing the computer program as described in the fourteenth, fifteenth and sixteenth aspects.

The technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

According to the instant messaging method of the present invention, before the instant messaging sender sends the instant message, the first extended information needs to be added to the instant message, and then sent to the instant messaging receiving end, so that the instant communication receiving end receives the instant communication. After the message sent by the sender, the operation authority of the instant message can be controlled based on the first extension information included in the message, thereby controlling the operation authority of the message receiver to the received message, thereby avoiding instant message reception. The party can freely deal with the adverse consequences of instant messaging, such as the instant message being spread and the chat record being stolen, so as to achieve the technical effect of improving the security of the instant communication process.

The encryption method of the present invention consists in encrypting an instant message to be sent by using a time key, when The inter-key is used to limit the time limit for the instant message to be sent to be viewed. After the time limit expires, the instant message can no longer be viewed, ensuring the timeliness of the instant message; and the time key used to encrypt the message It is sent to the server, and the server manages the issuance of the key, thereby controlling whether the encrypted message can be viewed, ensuring the high security of the information in the instant communication process and the timeliness of the message, and solving the instant communication in the prior art. The security performance is not high, the privacy of the instant information is poor, and the technical problem is easy to be leaked.

The above description is only an overview of the technical solutions of the present invention, and the above-described and other objects, features and advantages of the present invention can be more clearly understood. Specific embodiments of the invention are set forth below.

DRAWINGS

Various other advantages and benefits will become apparent to those skilled in the art from a The drawings are only for the purpose of illustrating the preferred embodiments and are not to be construed as limiting. Throughout the drawings, the same reference numerals are used to refer to the same parts. In the drawing:

1 is a flow chart of a method for instant messaging transmission according to an embodiment of the present invention;

2 is a flow chart showing an instant communication control method according to a second embodiment of the present invention;

3 is a schematic diagram of an instant messaging transmitting end according to a third embodiment of the present invention;

4 is a schematic diagram of an instant messaging receiving end according to a fourth embodiment of the present invention;

Figure 5 shows a block diagram of an instant messaging sender or instant messaging receiver for performing the method according to the invention;

6 shows a schematic diagram of a storage unit for maintaining or carrying program code implementing a method in accordance with Embodiment 1 or Embodiment 2 of the present invention;

FIG. 7 is a flowchart of a method for sending an instant messaging message according to a fifth embodiment of the present invention; FIG.

FIG. 8 is a flowchart of a method for viewing an instant messaging message according to an embodiment 6 of the present invention; FIG.

FIG. 9 is a flowchart showing an instant messaging message viewing control method according to a seventh embodiment of the present invention. Cheng Tu

FIG. 10 is a schematic diagram showing an instant messaging transmitting end according to an embodiment 8 of the present invention; FIG.

11 is a schematic diagram of an instant messaging receiving end according to an embodiment 9 of the present invention;

Figure 12 is a diagram showing a server according to an embodiment 10 of the present invention;

Figure 13 shows a block diagram of an instant messaging sender or instant messaging receiver or server for performing the method according to the invention;

Figure 14 shows a schematic diagram of a memory unit for holding or carrying program code implementing one of the methods according to embodiments 5 through 7 of the present invention.

detailed description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While the embodiments of the present invention have been shown in the drawings, the embodiments Rather, these embodiments are provided so that this disclosure will be more fully understood and the scope of the disclosure will be fully disclosed.

The term "and/or" in this context is merely an association describing the associated object, indicating that there may be three relationships, for example, A and / or B, which may indicate that A exists separately, and both A and B exist, respectively. B these three situations. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.

The embodiments of the present invention provide an instant messaging sending method, an instant messaging control method, and a device, which are used to solve the technical problems in the prior art that instant messages are easily propagated and chat records are stolen.

Embodiment 1

Referring to FIG. 1 , an instant messaging sending method provided by an embodiment of the present application includes:

S101: The instant messaging sender obtains an instant message;

S102: The instant messaging sending end adds first extended information to the instant message, thereby obtaining the processed instant message.

S103: The instant messaging sender sends the processed instant message to the instant communication And a receiving end, wherein the instant messaging receiving end controls the operation authority of the instant message based on the first extended information.

It should be noted that, in the specific implementation process, it should be noted that the instant messaging method according to the embodiment of the present invention can be applied to various instant messaging softwares such as Weibo, QQ, Fetion, WeChat, etc., and the instant messaging software can be Used in terminals such as mobile phones or computers. And, it can be applied to one-on-one chat, and can also be applied to group chat.

The specific implementation steps of the instant messaging sending method are described in detail below with reference to FIG. 1 :

Step S101: The instant messaging sender acquires an instant message.

The content of the instant message may include text, pictures, sounds, videos, and the like.

Step S102: The instant messaging sender adds first extension information to the instant message, thereby obtaining the processed instant message. In the embodiment of the present application, the first extended information is used to control the operation permission of the instant communication receiving end to forward and/or copy the instant message, for example, the first extended information is used to control the instant communication receiving end to prohibit the forwarding of the instant message. , prohibit copying, prohibit forwarding, copy prohibition, and so on. It should be noted that the first extended information may also be used to limit the operation permission that the instant communication receiving end has visible to the daily instant communication client, such as collecting the received message, which is not limited in the present invention.

As an optional embodiment, if the first extension information includes the first preset content, the operation permission of the instant messaging receiver to the instant message is prohibition of forwarding; and/or, if The first extension information includes the second preset content, and the operation permission of the instant communication receiving end to the instant message is prohibition of copying.

The first extended information may include a plurality of extended information, for example, a first function field, a first function tag, and the like, and the first preset content (or the second preset content) is different according to the first extended information. What content is for the first preset content (or the second preset content) will be introduced later. After receiving the processed instant message, the instant messaging receiving end may determine whether the first extended information is included in the instant message, and if the first extended information is included, may control whether the first extended information controls the operating right of the instant message. .

As an optional embodiment, the instant messaging sender adds the first extended information to the instant message. The specific steps include: the instant messaging sender implants the first function field in the instant message; the instant messaging sender assigns a value to the first function field, wherein the first function field is assigned a different value, and the instant messaging receiver is configured for the instant message. The operating permissions will be different.

Specifically, if the assignment of the first function field is the first preset value, the operation permission of the instant messaging receiver to the instant message is prohibition of forwarding; and/or, if the assignment of the first function field is the second preset value, Then, the operation permission of the instant messaging receiving end to the instant message is prohibition of copying.

Specifically, in this embodiment, the first functional field implanted in the instant message is XX-CanNotXX, and if the XX-CanNotXX value is 0 (of course, other values, for example, 00, 10, etc.), The operation permission of the instant communication receiving end to the instant message is prohibitive forwarding, and the instant communication receiving end does not provide the forwarding operation right for the instant message. At this time, the first preset content in the first extended information is the first function field is given First preset value (for example: 0, 00, 10, etc.); if the XX-CanNotXX value is 1 (of course, other values, such as 01, 11, etc.), the instant messaging receiver The operation permission of the instant message is that the copying is prohibited, so that the instant communication receiving end does not provide the copying operation function for the instant message, and the first preset content in the first extended information is the second preset value that the first function field is given. (Example: 1, 01, 11, etc.); if the XX-CanNotXX value is 0/1 (of course, other values, such as 00/01, 10/11, etc.), the instant messaging receiver is on the instant message. The operation permission is to prohibit copying and prohibit forwarding, from The instant messaging receiver does not provide forwarding and copying operations for instant messaging.

As another optional embodiment, the instant messaging sender adds the first extended information to the instant message, and the specific steps include: the instant messaging sender adds the first function tag to the instant message, based on the instant received by the instant messaging receiver. Whether the first function tag exists in the message, and the instant messaging receiver has different operation rights to the instant message.

Specifically, in this embodiment, the instant messaging sender adds a first function tag to the instant message, and the first function tag is, for example, XX-CanNotFW, XX-CanNotCO (of course, may also be other function identifiers), and the like. After receiving the instant message, the communication receiving end may determine whether the first function tag is included in the instant message, thereby determining the operation authority for the instant message.

Further, according to whether a specific first function tag exists in the instant message, the operation permission of the instant communication receiving end to the instant message is controlled to prohibit forwarding, and/or copying is prohibited.

Specifically, in this embodiment, for example, different first function fields may be set for forwarding rights and copy rights. For example, the first function added by the instant messaging sender to the instant message is marked as: XX-CanNotFW, and the instant communication is received. The operation right of the instant message is forbidden to forward, and the instant communication receiving end does not provide the forwarding operation function; if the first function added by the instant messaging sender to the instant message is marked as: XX-CanNotCO, the instant communication receiving end is immediately The operation permission of the message is prohibition of copying, so that the instant messaging receiving end does not provide the copying operation function; if the first function added by the instant messaging sender to the instant message is marked as: XX-CanNotRE&CO, the instant messaging receiving end operates on the instant message The permission is to prohibit copying and prohibiting forwarding, so that the instant messaging receiving end does not provide the forwarding and copying operation functions. Of course, the correspondence between the first function field and the operation authority is merely an example and is not a limitation. In the above solution, the first preset content (or the second preset content) is the first function field.

In the above solution, only the first function field needs to be assigned to the instant message, so that the instant communication receiving end can control the operation authority of the instant message without multiple operations, thereby reducing the processing load of the instant messaging sender.

Further, if the operation permission of the instant communication receiving end to the instant message is prohibition of forwarding, the first prompt information for prompting the prohibition of forwarding is given at the instant communication receiving end; and/or,

If the operation permission of the instant communication receiving end to the instant message is prohibition of copying, the second prompt information for prompting the copy prohibition is given at the instant communication receiving end.

Specifically, in this embodiment, the first prompt information (or the second prompt information) is, for example, text, a picture, a voice, and the like, and the instant communication receiving end can determine that the instant communication receiving end operates the instant message as After the forwarding is prohibited, the first prompt information (or the second prompt information) is directly added to the instant message, and the instant communication receiving end directly reads the first prompt information (or the second prompt information) in the processed instant message and outputs the first prompt information (or the second prompt information). The first prompt information (or the second prompt information); or, the instant communication receiving end only adds the corresponding first extended information to the instant message, and the instant communication After receiving the processed instant message, the receiving end generates the first prompt information and outputs if the operation permission for the instant message is parsed, and generates the first prompt information if the operation permission for the instant message is parsed. Two prompt information and output and so on.

The instant messaging receiving end may output the first prompting information (or the second prompting information) in the form of a pop-up prompting window, and may also adopt other prompting manners. The specific display manner is not specifically limited in the present invention.

In the above solution, the instant messaging receiving end can generate prompt information (first prompt information or second prompt information) for the corresponding operation authority, thereby preventing the user of the instant communication receiving end from generating useless operations.

As another optional embodiment, the instant messaging sender adds the first extended information to the instant message, so as to obtain the processed instant message, which specifically includes:

The instant messaging sender packetizes the instant message into a new message; the instant messaging sender adds the first extension information to the new message, and further obtains the processed instant message. Specifically, the new message is a message generated by the encryption and packing method, and the encryption algorithm used includes: a data encryption algorithm DES, a triple data encryption algorithm TDEA, a block cipher algorithm RC5, and an international data encryption algorithm IDEA.

As an optional embodiment, the packaged new message includes the message content, the encryption key, and the identifier information of the instant messaging receiving end; the identifier information of the instant messaging receiving end includes the username information or the physical address information of the instant messaging receiving end. . After the instant communication sender sends the packaged new message to the instant communication receiving end, the instant communication receiving end parses the encrypted message, and the parsing method is: if the instant communication receiving end identification information and the instant communication sending end send the instant communication receiving The matching information of the identification information of the terminal is 1, the instant communication receiving end can obtain the encryption key, and the instant communication receiving end can use the encryption key to parse the original content of the message generated by the encryption and packaging mode; if the identification information of the instant communication receiving end is sent by instant communication The matching degree of the identity information of the instant messaging receiving end sent by the terminal is not 1, and the instant messaging receiving end cannot obtain the encryption key, and cannot parse the original content of the message generated by the encrypted packing mode, and then the encrypted message cannot be read normally.

At the same time, the instant messaging receiver will provide a third prompt message, and the third prompt message is used to prompt the recipient. The message is an encrypted message. Specifically, in this embodiment, the following third prompt information “the message is an encrypted message” may be generated through a pop-up window. Of course, the specific display manner of the third prompt information is not specifically limited in the present invention.

Further, in the step S102, the processed instant message further includes: second extension information, where the second extension information is used to control an expiration time of the instant message.

Specifically, in this embodiment, the second extended information may be added to the message header, the message body, and the like of the instant message.

Through the above solution, the invalidation time of the instant message can be effectively controlled, thereby further improving the security of instant message propagation.

In an optional embodiment, the second extended information is a second function field, and if the value of the second function field includes a time point, the instant message expires after the time point; If the value of the two-function field does not include the point in time, the instant message will not expire. For example, in a specific embodiment, the second function field is XX-LoseEfficacy, and the value is: Tue, 10Feb 2015 15:36:57+0800, which means that the expiration time of the instant message is February 10, 2015. :36:57, if the current time to view the message has exceeded the expiration time of 15:36:57 on February 10, 2015, the instant message will be invalid and will not be viewed properly. Otherwise, if the value of the second function field is empty, it means that the instant message is not controlled by the expiration time, and the instant message can be viewed indefinitely.

In another optional embodiment, the second extended information is a second function tag, and if the instant message obtained by the instant messaging receiver includes the second function tag, the instant message is at a preset time. After the segment expires; if the instant message obtained by the instant messaging receiver does not include the second function tag, the instant message does not expire. The preset time period may be manually set by the user when sending an instant message, or may be automatically set by the system, for example, the system is set to the expiration time after 2 months from the start of the instant message sending time, where the preset time is The specific implementation form is not limited. For example, in a specific embodiment, if the second function is added to the instant message as XX-LoseEfficacy, and the system sets the expiration time to be 1 month after the start of the transmission time, and the sending time is 10:00 on January 1, 2016. 1 point, then it will be instant until 10:1 on February 1, 2016. At the expiration point of the message, if the current viewing time has exceeded the expiration time, the instant message has expired and will no longer be viewed.

Through the above scheme, the expiration time can be set in batches for the instant message, thereby improving the efficiency of the failure time setting.

Next, the step S103 is performed, the instant messaging sending end sends the processed instant message to the instant messaging receiving end, so that the instant messaging receiving end implements the instant message based on the first extended information. Control of operational permissions. Specifically, after the instant messaging terminal sends the processed instant message, that is, the instant message to which the first extended information is added, to the instant messaging receiving end, the instant messaging receiving end implements the instant message based on the specific situation of the first extended information. The control of the operation authority, the specific implementation method will be described in detail later.

Embodiment 2

Referring to FIG. 2, according to another aspect of the present invention, an instant communication control method is further provided, including:

S201: The instant messaging receiving end receives the message sent by the instant messaging sender;

S202: The instant messaging receiving end reads the first extended information added by the instant messaging sending end in the message;

S203: The instant messaging receiving end controls the operation authority of the message according to the first extended information.

The specific implementation steps of the instant messaging control method are described in detail below with reference to FIG. 2:

Step S201: The instant messaging receiving end receives the message sent by the instant messaging sender; wherein the content of the instant message may include text, a picture, a voice, a video, and the like.

Then, in step S202, the instant communication receiving end reads the first extended information added by the instant messaging sending end in the message; wherein, in the embodiment of the present application, the instant messaging receiving end reads the instant message The first extended information added by the instant messaging sending end is used to control the operation permission of the instant messaging receiving end to forward and/or copy the instant message, for example, controlling the instant messaging receiving end to prohibit the instant message by using the first extended information Forward, prohibit copying, prohibit forwarding, copy prohibition, etc. Wait. It should be noted that the first extended information may also be used to limit the operation permission that the instant communication receiving end has visible to the daily instant communication client, such as collecting the received message, which is not limited in the present invention.

As an optional embodiment, the instant messaging receiving end reads the first extended field that the instant messaging sending end adds the first extended information to the instant messaging for the instant messaging sending end to be embedded in the instant message; the first functional field The instant messaging sender assigns a value, wherein the first function field is assigned a different value, and the instant messaging receiver has different operating rights for the instant message.

Specifically, in this embodiment, the first functional field implanted in the instant message is XX-CanNotXX, and if the XX-CanNotXX value is 0 (of course, other values, for example, 00, 10, etc.), The operation permission of the instant communication receiving end to the instant message is prohibitive forwarding, and the instant communication receiving end does not provide the forwarding operation right for the instant message. At this time, the first preset content in the first extended information is the first function field is given First preset value (for example: 0, 00, 10, etc.); if the XX-CanNotXX value is 1 (of course, other values, such as 01, 11, etc.), the instant messaging receiver The operation permission of the instant message is prohibition of copying, so that the instant communication receiving end is targeted The message does not provide the copied operation function. The first preset content in the first extended information is the second preset value (eg, 1, 01, 11, etc.) to which the first function field is assigned; if XX- The value of CanNotXX is 0/1 (of course, it can also be other values, for example, 00/01, 10/11, etc.), then the operation permission of the instant messaging receiver to the instant message is prohibition of copying and prohibition of forwarding, so that the instant communication receiving end The operation function of forwarding and copying is not provided for instant messaging.

As another optional embodiment, the instant communication receiving end reads the first extended information added by the instant messaging sending end to the instant message, and the instant communication sending end adds the first function flag to the instant message, and is received by the instant messaging receiving end. Whether the first function tag exists in the incoming instant message, and the instant communication receiving end has different operation rights to the instant message.

Specifically, in this embodiment, the instant messaging sender adds a first function identifier to the instant message, for example, XX-CanNotFW, XX-CanNotCO (of course, may also be other function identifiers), and the like, and the instant communication receiving end is receiving. After the instant message, it can be determined whether the first function tag is included in the instant message, thereby determining the operation authority for the instant message.

Specifically, in this embodiment, for example, different first function fields may be set for forwarding rights and copy rights. For example, the first function added by the instant messaging sender to the instant message is marked as: XX-CanNotFW, and the instant communication is received. The operation right of the instant message is forbidden to forward, and the instant communication receiving end does not provide the forwarding operation function; if the first function added by the instant messaging sender to the instant message is marked as: XX-CanNotCO, the instant communication receiving end is immediately The operation permission of the message is prohibition of copying, so that the instant messaging receiving end does not provide the copying operation function; if the first function added by the instant messaging sender to the instant message is marked as: XX-CanNotCO&FW, the instant messaging receiving end operates on the instant message The permission is to prohibit copying and prohibiting forwarding, so that the instant messaging receiving end does not provide the forwarding and copying operation functions. Of course, the correspondence between the first function field and the operation authority is merely an example and is not a limitation. In the above solution, the first preset content (or the second preset content) is the first function field.

Specifically, in this embodiment, the first prompt information (or the second prompt information) is, for example, text, a picture, a voice, and the like, and the instant communication receiving end can determine that the instant communication receiving end operates the instant message as After the forwarding is prohibited, the first prompt information (or the second prompt information) is directly added to the instant message, and the instant communication receiving end directly reads the first prompt information (or the second prompt information) in the processed instant communication and outputs the same. The first prompt information (or the second prompt information); or, the instant communication receiving end only adds the corresponding first extended information to the instant message, and the instant communication receiving end parses the pair after receiving the processed instant message If the operation permission of the instant message is prohibition of forwarding, the first prompt information is generated and output; if the operation permission for the instant message is resolved to prohibit copying, the second prompt information is generated and outputted.

As another optional embodiment, the instant messaging receiving end reads a new message that the instant messaging sender packs the instant message, and the first extended information that the instant messaging sender adds to the new message. Specifically, the new message is a message generated by the encryption and packing method, and the encryption algorithm used includes: a data encryption algorithm DES, a triple data encryption algorithm TDEA, a block cipher algorithm RC5, and an international data encryption algorithm IDEA.

As an optional embodiment, the packaged new message includes the message content, the encryption key, and the identifier information of the instant messaging receiving end; the identifier information of the instant messaging receiving end includes the username information or the physical address information of the instant messaging receiving end. . After receiving the packetized new message, the instant messaging terminal first parses the encrypted message, and the parsing method is: if the identifier information of the instant communication receiving end and the identification information of the instant communication receiving end sent by the instant communication sending end are 1, The instant communication receiving end can obtain the encryption key, and the instant communication receiving end can use the encryption key to parse the original content of the message generated by the encryption and packaging method; if the identification information of the instant communication receiving end and the identifier of the instant communication receiving end sent by the instant communication sending end If the information matching degree is not 1, the instant communication receiving end cannot obtain the encryption key, and the original content of the message generated by the encryption and packaging method cannot be parsed, and then the encrypted message cannot be read normally.

At the same time, the instant messaging receiving end provides a third prompting information, and the third prompting information is used to prompt the receiving party that the message is an encrypted message. Specifically, in this embodiment, the following third prompt information “the message is an encrypted message” may be generated through a pop-up window. Of course, the specific display manner of the third prompt information is not specifically limited in the present invention.

Further, in step S202, the instant messaging receiving end reads information from the instant message further includes second extended information, where the second extended information is used to control an expiration time of the instant message.

In an optional embodiment, the second extended information is a second function field, and if the value of the second function field includes a time point, the instant message expires after the time point; If the value of the two-function field does not include the point in time, the instant message will not expire. For example, in a specific embodiment, the second function field is XX-LoseEfficacy, and the value is: Tue, 10Feb 2015 15:36:57+0800, which means that the expiration time of the instant message is February 10, 2015. :36:57, if the current time to view the message has exceeded the expiration time described on February 10, 2015 at 15:36:57, then The instant message will be invalid and will not be viewed properly. Otherwise, if the value of the second function field is empty, it means that the instant message is not controlled by the expiration time, and the instant message can be viewed indefinitely.

In another optional embodiment, the second extended information is a second function tag, and if the instant message obtained by the instant messaging receiver includes the second function tag, the instant message is at a preset time. After the segment expires; if the instant message obtained by the instant messaging receiver does not include the second function tag, the instant message does not expire. The preset time period may be manually set by the user when sending an instant message, or may be automatically set by the system, for example, the system is set to the expiration time after 2 months from the start of the instant message sending time, where the preset time is The specific implementation form is not limited. For example, in a specific embodiment, if the second function is added to the instant message as XX-LoseEfficacy, and the system sets the expiration time to be 1 month after the start of the transmission time, and the sending time is 10:00 on January 1, 2016. 1 point, then 10:1 on February 1, 2016 is the expiration time point of the instant message. If the current viewing time has exceeded the expiration time, the instant message has expired and will no longer be viewed.

Next, in step S203, the instant communication receiving end implements control of the operation authority of the instant message according to the first extended information.

Specifically, after the instant communication receiving end reads the first extended information, the instant communication receiving end controls the operation authority of the instant message based on the specific situation of the first extended information.

Embodiment 3

Referring to FIG. 3, according to another aspect of the present invention, an instant messaging sender is further provided, including:

The obtaining unit 31 is configured to obtain an instant message.

Adding unit 32: for adding first extended information to the instant message, thereby obtaining the processed instant message;

The sending unit 33 is configured to send the processed instant message to the instant messaging receiving end, And controlling, by the instant messaging receiving end, the operation authority of the instant message based on the first extended information.

Optionally, the adding unit includes:

The implanting module 321 is configured to: implant a first function field in the instant message;

The assignment module 322 is configured to assign a value to the first function field, wherein the first function field is assigned a different value, and the instant communication receiving end has different operation rights to the instant message.

Optionally, the adding unit 32 further includes:

a first adding module 323, configured to add a first function tag to the instant message, and based on whether the first function tag exists in the instant message received by the instant messaging receiving end, the instant messaging receiving end The operation rights to the instant message are different.

Optionally, the first extended information is used to control an operation permission of the instant messaging receiving end to forward and/or copy the instant message.

Optionally, if the first extension information includes the first preset content, the operation permission of the instant messaging receiver to the instant message is prohibition of forwarding; and/or,

If the first extension information includes the second preset content, the operation permission of the instant communication receiving end to the instant message is prohibition of copying.

Optionally, if the operation permission of the instant messaging receiving end to the instant message is prohibitive forwarding, the first prompt information for prompting the prohibition of forwarding is given at the instant messaging receiving end; and/or,

And if the operation permission of the instant messaging receiving end to the instant message is prohibition of copying, the second prompting information for prompting for prohibiting copying is given at the instant messaging receiving end.

Optionally, the adding unit 32 further includes:

a packaging module 325: configured to package the instant message into a new message;

The second adding module 324 is configured to add the first extended information to the new message, and obtain the processed instant message.

Optionally, the new message is a message generated by an encryption and packaging method.

Optionally, the processed instant message further includes: second extension information, the second extension The information is used to control the expiration time of the instant message.

Optionally, the second extended information is a second function field, and if the value of the second function field includes a time point, the instant message expires after the time point; if the second function field is If the value does not include the time point, the instant message does not expire; or,

The second extension information is a second function identifier. If the instant message obtained by the instant messaging receiver includes the second function identifier, the instant message expires after a preset time period; if the receiving end is If the obtained second message is not included in the obtained instant message, the instant message does not expire.

Optionally, the adding unit 32 is further configured to:

The first extended information is implanted in a message header of the instant message.

Embodiment 4

Referring to FIG. 4, according to another aspect of the present invention, an instant messaging receiving end is further provided, including:

The receiving unit 41 is configured to receive an instant message sent by the sending end.

The reading unit 42 is configured to read the first extended information added by the instant messaging sending end in the instant message;

The control unit 43 is configured to implement control of the operation authority of the instant message according to the first extended information.

Optionally, the reading unit 41 includes:

The first reading module 421 is configured to: read an assignment of the first function field in the instant message; and implement control on the operation authority of the instant message according to the first extension information, including:

The instant messaging receiver has different operating rights to the instant message based on the assignment of the first function field.

Optionally, the reading unit further includes:

The second reading module 422 is configured to read a first function tag in the instant message, where different operating rights to the instant message are implemented according to whether the first function tag exists.

Optionally, the control unit is configured to:

Controlling the operation authority of forwarding and/or copying of the instant message is implemented according to the first extended information.

Optionally, the control unit 43 is configured to:

If the first extended content includes the first preset content, the operation permission for the instant message is prohibition of forwarding; and/or,

If the first extension information includes the second preset content, the operation authority for the instant message is prohibition of copying.

Optionally, the instant messaging receiving end further includes: an information prompting unit, configured to:

If the operation permission of the instant messaging receiving end to the instant message is prohibitive forwarding, the instant messaging receiving end gives first prompt information for prompting to prohibit forwarding; and/or,

And if the operation permission of the instant communication receiving end to the instant message is prohibition of copying, the instant communication receiving end gives second prompt information for prompting to prohibit copying.

Optionally, the instant message is a message generated by the instant messaging sender by encrypting and packaging.

Optionally, the reading unit further includes:

The third reading module 423 is configured to: read the second extended information from the instant message; and the control unit is further configured to control, according to the second extended information, a dead time of the instant message.

Optionally, controlling the expiration time of the instant message based on the second extended information, including:

If the second extended information is a second functional field, and the value of the second functional field includes a time point, the instant message expires after the time point; if the read second function field The value does not include the point in time, then the instant message does not expire; or,

If the second extended information is a second function tag, the instant message expires after a preset time period; if the second function tag is not included in the instant message, the instant message does not expire.

Optionally, the reading unit is further configured to: read the first extended information from a message header of the instant message.

Fig. 5 shows an instant communication receiving end (hereinafter referred to as an instant communication transmitting end or an instant communication receiving end collectively referred to as a device) of an instant communication transmitting end or an instant communication control method which can implement the instant messaging method according to the present invention. The device conventionally includes a processor 1010 and a computer program product or computer readable medium in the form of a memory 1020. The memory 1020 may be an electronic memory such as a flash memory, an EEPROM (Electrically Erasable Programmable Read Only Memory), an EPROM, a hard disk, or a ROM. The memory 1020 has a memory space 1030 for executing program code 1031 of any of the above method steps. For example, storage space 1030 for program code may include various program code 1031 for implementing various steps in the above methods, respectively. The program code can be read from or written to one or more computer program products. These computer program products include program code carriers such as hard disks, compact disks (CDs), memory cards or floppy disks. Such computer program products are typically portable or fixed storage units as described with reference to FIG. The storage unit may have a storage section or a storage space or the like arranged similarly to the storage 1020 in FIG. The program code can be compressed, for example, in an appropriate form. Typically, the storage unit comprises program code 1031' for performing the steps of the method according to the invention, ie code that can be read by, for example, a processor such as 1010, which when executed by the device causes the device to perform the above Each step in the described method.

Embodiment 5

Referring to FIG. 7, a method for instant messaging transmission provided by an embodiment of the present application includes the following steps:

S51: Obtain a time key of an instant message to be sent, where the time key is used to limit a time limit during which the instant message to be sent can be viewed;

S52: Encrypt the to-be-sent instant message according to the time key to generate an encrypted message.

S52: Send the encrypted message to the receiver, send the time key to the server, and control, by the server, whether the receiver can view the encrypted message according to the time key.

It should be noted that, in the specific implementation process, the foregoing instant messaging message sending method provided by the present application may be applied to various instant messaging clients, such as commonly used QQ, WeChat or Weibo, etc. Wide range and easy to operate.

The specific implementation steps of the instant messaging message sending method are described in detail below with reference to FIG. 7:

Step S51: Obtain a time key of an instant message to be sent, where the time key is used to limit a time limit during which the instant message to be sent can be viewed.

Specifically include:

S511: Obtain an expiration time of an instant message to be sent, where the expiration time is an expiration time after the instant message is sent;

S512: Obtain a time key according to the expiration time;

Step S511, obtaining an expiration time of the instant message to be sent, where the expiration time can be generated in the following manner:

The first way: the expiration time is set by the sender.

The specific method is: the instant messaging sender sets the entry of the input invalidation time command before the sender sends the new message, for example, the sender can manually enter or manually select the expiration time through the portal, such as manual entry or selection. The time is “2016-8-1 11:30”, and the expiration time of the instant message is “2016-8-1 11:30”.

The second way: the expiration time is automatically generated by the instant messaging sender system.

The specific method is that the expiration time is automatically generated by the time when the instant messaging sender sends the message plus a fixed period. For example, the time for sending the message is “2016-8-1 11:30”, and the fixed period is 30 days, then the expiration time is "2016-8-31 11:30". The setting of the fixed term is a function integration at the time of development of the instant messaging system. Regarding the manner in which the failure time is generated, the present invention is not limited.

Step S512: Obtain a time key according to the expiration time.

The specific time key may be a time public key ID calculated by using an identification cryptographic algorithm, and at least the following two methods are:

The first method: the original message data can be encrypted by using a symmetric encryption method. The principle of the symmetric encryption algorithm is that the data sender processes the plaintext (raw data) together with the encryption key through an encryption algorithm. After that, it becomes a complex encrypted ciphertext sent out. After receiving the ciphertext, if the receiver wants to interpret the original data, it needs to decrypt the ciphertext by using the encrypted key and the inverse algorithm of the same encryption algorithm, so that it can be restored to a readable plaintext. In the symmetric encryption algorithm, there is only one key used, and both the transmitting and receiving parties use this key to encrypt and decrypt the data. The advantages of the symmetric encryption algorithm are the high speed of encryption and decryption and the difficulty of using long keys.

The second method: the time key can also be obtained by an asymmetric encryption algorithm. The asymmetric encryption algorithm requires two keys: a public key (publickey) and a private key (privatekey). The public key and the private key are a pair. If the data is encrypted with the public key, only the corresponding private key can be used for decryption; if the data is encrypted with the private key, only the corresponding public key can be used. Decrypt. The characteristic of the asymmetric cryptosystem is that the encryption and decryption speed is slower than the symmetric encryption, but the encryption algorithm has complex strength and high security.

Step S52: Encrypt the to-be-sent instant message according to the time key to generate an encrypted message.

Step S52 may be implemented by using the first method: encrypting the to-be-sent instant message by using the time key to generate the encrypted message;

Specifically, in this embodiment, the original message data may be encrypted by using a symmetric encryption method, and the specific encrypted content is as follows:

EncrpytBySym (instant message data ciphertext) = fx_encryptBySym (ori (instant message content), ID (time key)), ori is all content of instant message, using binary data format, EncrpytBySym is the message data density obtained by encryption The encryption strength used for encryption is AES256.

Step S52 may be implemented by using the method 2: generating a session key, and encrypting the to-be-sent instant message by using the combination of the time key and the session key to generate the encrypted message;

Specifically, in this embodiment, the algorithm for generating a session key is to generate a session key according to a random number, such as SessionPassword=fx_randomSession ("1234567890"), SessionPassword=session key, and 1234567890 is a random number. The algorithm that generates the session key generates a session key. Then, using the session key to send an instant message to add The secret is generated, and the message data ciphertext in the encrypted message is generated, and the specific method is:

EncrpytBySym (message data ciphertext)=fx_encryptBySym (ori (message content), SessionPassword, ID), EncrpytBySym is a message generated by encrypting the to-be-sent instant message with the combination of the time key and the session key Data ciphertext.

Next, the session key is encrypted by using the time key to generate a session key ciphertext in the encrypted message; the specific method may be:

Session key ciphertext id1_encryptdata=fx_encryptByIBC (SessionPassword, ID (time key)), this encryption algorithm uses sm9 encryption algorithm, the encryption strength is RSA3072.

Further, the encrypted message may be an encapsulated packet generated by the message data ciphertext and the session key ciphertext before being sent; and the message data ciphertext and the session key ciphertext are encapsulated in a P7 format, In combination with the embodiment, the specific encapsulation format of the XXX instant messaging system is as follows:

P7Data=SEQUENCE{

Encryption type = XXXIm

Encryption algorithm = id-ibc-enc-kem-sok-esbdh

Summary type=aes256

Encoding type = dem-dem3, hmacSHA

Decryptible time information = {

Decryptable time stamp = yyyymmddhhnnsszzz

Domain=360jiamiyou_olym

Version=1

Session key ciphertext (id1_encryptdata)

}

Data ciphertext (EncryptBySym)

}

After the foregoing work is completed, step S52 may be performed: sending the encrypted message to the receiver, sending the time key to the server, and controlling, by the server, whether the receiver can view the encryption according to the time key. Message. How the server controls the receipt according to the time key The method of whether the party can view the encrypted message will be described in detail later.

Embodiment 6

Please refer to FIG. 8 : an instant messaging message viewing method provided by an embodiment of the present application is applied to a message receiving end, and the method includes:

S61: Receive an encrypted message that is encrypted according to a time key, where the time key is used to limit a time limit during which the encrypted message can be viewed;

S62: Respond to the viewing operation of viewing the encrypted message, generate and send a key request to the server, where the key request is used to obtain the time key of the encrypted message;

S63: Receive feedback information that the server responds to the key request, where the feedback information is generated by the server according to the request time of the key request and the time key sent by the sending end, when the request time is The feedback information is information indicating that the encrypted message is invalid when the time range corresponding to the time key is exceeded, and the feedback information is the time when the request time is within a time range corresponding to the time key. Key

S64: Parse the feedback information, and respond to the viewing operation according to the parsing result;

The responding to the viewing operation according to the parsing result includes:

When the parsing result is invalid for the encrypted message, step S641 is performed: in response to the viewing operation, prompting the user that the encrypted message has expired and cannot be viewed;

When the parsing result is the time key, step S642 is performed: in response to the viewing operation, decrypting the encrypted message according to the time key, obtaining message data and displaying;

In step S642, the decrypting the encrypted message according to the time key may be performed in two ways:

Method 1: decrypting the encrypted message with the time key to obtain message data;

Or method 2: parsing the encapsulated packet of the encrypted message to obtain a session key ciphertext in the encrypted message; decrypting the session key ciphertext with the time key to obtain a session key; using the session secret The key decrypts the message data ciphertext in the encrypted message to obtain the message data.

The specific implementation of the instant messaging message viewing method in the embodiment of the present application is described in detail below with reference to FIG. Now steps:

The time key can be the time public key ID calculated by the identification cryptographic algorithm, and there are at least two methods:

The first method: the original message data can be encrypted by using a symmetric encryption method. The principle of the symmetric encryption algorithm is that the data sender converts the plaintext (original data) together with the encryption key through the encryption algorithm to make it complex. The encrypted ciphertext is sent out. After receiving the ciphertext, if the receiver wants to interpret the original data, it needs to decrypt the ciphertext by using the encrypted key and the inverse algorithm of the same encryption algorithm, so that it can be restored to a readable plaintext. In the symmetric encryption algorithm, there is only one key used. Both parties of the sending and receiving message use this key to encrypt and decrypt the data. The advantages of the symmetric encryption algorithm are the high speed of encryption and decryption and the difficulty of using long keys. .

The instant message receiving end sends a key request to the server to obtain a time key, where the time key is issued by the server by verifying whether the time when the instant message receiving end applies for the time key is within a time range corresponding to the time key. The server here is generally a CA server; the so-called CA, which is a digital certificate authentication center (CertficateAuthority, CA), is a key link in the security of the entire online electronic transaction. It is primarily responsible for generating, distributing, and managing the identity authentication digital certificates required by all entities involved in online transactions.

S63: Receive feedback information that the server responds to the key request, where the feedback information is generated by the server according to the request time of the key request and the time key sent by the sending end, when the request time is The feedback information is information indicating that the encrypted message is invalid when the time range corresponding to the time key is exceeded, and the feedback information is the time when the request time is within a time range corresponding to the time key. Key.

Specifically, in this embodiment, an example is as follows:

The request time for the instant messaging receiver to send a key request to the server is 2016-8-20 10:10:10, and the time key sent by the instant messaging sender is 2016-8-10 10:10:10. The request time exceeds the time range corresponding to the time key, and the feedback information sent by the server to the instant communication receiving end is invalid, and the time key sent by the instant communication sending end is 2016-8-30 10:10: 10: The request time is within a time range corresponding to the time key, and the feedback information sent by the server to the instant communication receiving end is a time key.

When the parsing result is invalid, the step S641 is performed: the instant communication receiving end responds to the viewing operation, prompting the user that the encrypted message has expired and cannot be viewed;

When the parsing result is the time key, step S642 is performed: the instant communication receiving end responds to the viewing operation, decrypts the encrypted message according to the time key, obtains message data, and displays;

Or method 2: parsing the encapsulated packet of the encrypted message to obtain a session key ciphertext in the encrypted message; decrypting the session key ciphertext with the time key to obtain a session key; using the session secret Key decrypting the message data ciphertext in the encrypted message to obtain message data;

Specifically, after obtaining the time key, the instant messaging receiving end parses the session key ciphertext with the time key to obtain the session key. In this embodiment, by parsing the session key ciphertext (id1_encryptdata), get the session key SessionPassword as "1234567890", and then parse the message data ciphertext through the session key SessionPassword, such as EncrpytBySym (message data ciphertext) = fx_encryptBySym (ori (message content), SessionPassword (in encryption) Session key)), after decryption, finally get the message data ORI.

The package package here is the P7 format package data generated in the foregoing instant messaging message sending method, and the specific package data is as follows:

P7Data=SEQUENCE{

Encryption type = XXXsIm

Encryption algorithm = id-ibc-enc-kem-sok-esbdh

Summary type=aes256

Encoding type = dem-dem3, hmacSHA

Decryptible time information = {

Decryptable time stamp = yyyymmddhhnnsszzz

Domain=XXXjiamiyou_olym

Version=1

Session key ciphertext (id1_encryptdata)

}

Data ciphertext (EncryptBySym)

}.

By parsing the P7 format encapsulation packet, the session key ciphertext id1_encryptdata and the expiration time yyyymmddhhnnsszzz can be obtained therefrom.

Example 7

Please refer to FIG. 9 : An instant messaging message viewing control method is applied to a server, and the method includes:

S71: Receive a key request for acquiring an encrypted message time key sent by the instant communication receiving end;

S72: Compare, by the instant messaging receiver, a request time for requesting the time key with a time range corresponding to the time key;

If the request time exceeds the time range, executing S721: refusing to issue the time key to the instant information receiving end, so that the instant information receiving end cannot decrypt and view the encrypted message;

If the request time does not exceed the time range, executing S722: issuing the time key to the instant information receiving end, so that the instant information receiving end decrypts and views the encrypted message according to the time key.

The specific principle and operation method of step S72 correspond to step S63.

The specific principles and operation methods of step S721 and step S722 correspond to S641 and S642, respectively.

As an instant messaging system corresponding to the above encryption method, the foregoing method is used to perform encrypted transmission, decryption reception, and viewing control of an instant message, and the instant communication system includes the aforementioned instant communication transmitting end, instant messaging receiving end, and server.

Example eight

Based on the foregoing method for transmitting an instant messaging message, the embodiment of the present application further provides an instant messaging sending end, as shown in FIG. 10, including:

The obtaining unit 81 is configured to obtain a time key for sending the instant information to be sent, where the time key is used to limit a time limit during which the instant information to be sent can be viewed;

The encryption unit 82 is configured to: encrypt the to-be-transmitted instant information according to the time key to generate encrypted information;

The first sending unit 83 is configured to send the encrypted information to the receiver, send the time key to the server, and control, by the server, whether the receiver can view the encrypted message according to the time key.

The obtaining unit 81 includes:

a time acquisition subunit, an optional embodiment, the time acquisition subunit is configured to obtain an expiration time of the instant information to be sent, where the expiration time is an expiration time after the message is sent;

In another optional embodiment, the time acquisition subunit is configured to obtain the expiration time by adding a sending time of the to-be-sent instant information to a fixed period.

a key acquisition subunit, configured to obtain a time key according to the expiration time.

The encryption unit 82 includes:

a first encryption subunit, configured to encrypt the to-be-transmitted instant information by using the time key to generate the encrypted information; or

a second encryption subunit;

In an optional embodiment, the second encryption subunit is configured to generate a session key, and the instant message to be sent is encrypted by using the combination of the time key and the session key to generate the encrypted instant information.

In another optional embodiment, the second encryption subunit is configured to:

And encrypting the instant information to be sent by using the session key, and generating the information data ciphertext in the encrypted message;

The session key is encrypted with the time key to generate a session key ciphertext in the encrypted message.

Example nine

Based on the method for viewing a timely communication message provided by the foregoing embodiment, the embodiment of the present application further provides an instant messaging message receiving end, as shown in FIG.

a first receiving unit 91: configured to receive an encrypted message that is encrypted according to a time key, where the time key is used to limit a time limit during which the encrypted message can be viewed;

The response requesting unit 92 is configured to generate and send a key request to the server in response to the viewing operation of viewing the encrypted message, where the key request is used to acquire the time key of the encrypted message;

The second receiving unit 93 is configured to receive feedback information that is sent by the server to the key request, where the feedback information is generated by the server according to the request time of the key request and the time key sent by the sending end. And the feedback information is information indicating that the encrypted message is invalid when the request time exceeds a time range corresponding to the time key, and when the request time is within a time range corresponding to the time key, The feedback information is the time key;

The parsing response unit 94 is configured to parse the feedback information, and respond to the viewing operation according to the parsing result.

Specifically, the parsing response unit 94 is configured to:

When the parsing result is invalid for the encrypted message, in response to the viewing operation, prompting the user that the encrypted message has expired cannot be viewed;

When the parsing result is the time key, in response to the viewing operation, decrypting the encrypted message according to the time key, obtaining message data and displaying;

The parsing response unit 94 includes:

a first parsing response subunit, configured to decrypt the encrypted message with the time key to obtain message data; or

a second parsing response subunit, configured to parse the encapsulated packet of the encrypted message to obtain a session key ciphertext in the encrypted message; decrypt the session key ciphertext with the time key to obtain a session key; Decrypting the message data ciphertext in the encrypted message with the session key to obtain message data.

Example ten

Based on the foregoing embodiment, an instant messaging message viewing control method is provided. The embodiment of the present application further provides a server, as shown in FIG. 12, including:

a third receiving unit 101: configured to receive a key request for acquiring an encrypted message time key sent by the instant information receiving end;

The verification unit 102 is configured to compare the request time of the time information receiving end requesting the time key with a time range corresponding to the time key;

The second sending unit 103 is configured to: when the request time exceeds the time range, refuse to issue the time key to the instant information receiving end, so that the instant information receiving end cannot decrypt and view the encrypted message;

And when the request time does not exceed the time range, the time key is issued to the instant information receiving end, so that the instant information receiving end decrypts and views the encrypted message according to the time key.

13 is a diagram showing a server of an instant communication receiving end or an instant communication message viewing control method of an instant messaging transmitting end or instant messaging message viewing method that can implement the instant messaging sending method according to the present invention (the instant messaging transmitting end or The instant messaging receiver or server is collectively referred to as a device). The device conventionally includes a processor 2010 and a computer program product or meter in the form of a memory 2020 Computer readable media. The memory 2020 may be an electronic memory such as a flash memory, an EEPROM (Electrically Erasable Programmable Read Only Memory), an EPROM, a hard disk, or a ROM. The memory 2020 has a memory space 2030 for executing program code 2031 of any of the above method steps. For example, the storage space 2030 for program code may include respective program codes 2031 for implementing various steps in the above methods, respectively. The program code can be read from or written to one or more computer program products. These computer program products include program code carriers such as hard disks, compact disks (CDs), memory cards or floppy disks. Such a computer program product is typically a portable or fixed storage unit as described with reference to FIG. The storage unit may have a storage section or a storage space or the like arranged similarly to the memory 2020 in FIG. The program code can be compressed, for example, in an appropriate form. Typically, the storage unit comprises program code 2031' for performing the steps of the method according to the invention, ie code that can be read by a processor such as 2010, which when executed by the device causes the device to perform the above Each step in the described method. The technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

The encryption method of the present invention is to encrypt the instant message to be sent by using the time key, and the time key is used to limit the time limit for the instant message to be sent to be viewed, that is, after the time limit expires, the instant message can no longer be viewed. The time-sensitiveness of the instant message is guaranteed; at the same time, the time key used to encrypt the message is sent to the server, and the server manages the issuance of the key, thereby controlling whether the encrypted message can be viewed, and ensuring the information in the instant communication process. The high security and the timeliness of the message solve the technical problem that the security performance of the instant communication in the prior art is not high, the privacy of the instant information is poor, and the disclosure is easy to be leaked. question.

The algorithms and displays provided herein are not inherently related to any particular computer, virtual system, or other device. Various general purpose systems can also be used with the teaching based on the teachings herein. The structure required to construct such a system is apparent from the above description. Moreover, the invention is not directed to any particular programming language. It is to be understood that the invention may be embodied in a variety of programming language, and the description of the specific language has been described above in order to disclose the preferred embodiments of the invention.

In the description provided herein, numerous specific details are set forth. However, it is understood that the embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques are not shown in detail so as not to obscure the understanding of the description.

Similarly, the various features of the invention are sometimes grouped together into a single embodiment, in the above description of the exemplary embodiments of the invention, Figure, or a description of it. However, the method disclosed is not to be interpreted as reflecting the intention that the claimed invention requires more features than those recited in the claims. Rather, as the following claims reflect, inventive aspects reside in less than all features of the single embodiments disclosed herein. Therefore, the claims following the specific embodiments are hereby explicitly incorporated into the embodiments, and each of the claims as a separate embodiment of the invention.

Those skilled in the art will appreciate that the modules in the devices of the embodiments can be adaptively changed and placed in one or more devices different from the embodiment. The modules or units or components of the embodiments may be combined into one module or unit or component, and further they may be divided into a plurality of sub-modules or sub-units or sub-components. In addition to such features and/or at least some of the processes or units being mutually exclusive, any combination of the features disclosed in the specification, including the accompanying claims, the abstract and the drawings, and any methods so disclosed, or All processes or units of the device are combined. Each feature disclosed in this specification (including the accompanying claims, the abstract and the drawings) may be replaced by alternative features that provide the same, equivalent or similar purpose.

In addition, those skilled in the art will appreciate that although some embodiments herein include certain features included in other embodiments and not other features, combinations of features of different embodiments are intended to be within the scope of the present invention. And different embodiments are formed. For example, in the following claims, any one of the claimed embodiments can be used in any combination.

The various component embodiments of the present invention may be implemented in hardware, or in a software module running on one or more processors, or in a combination thereof. Those skilled in the art will appreciate that a microprocessor or digital signal processor (DSP) may be used in practice to implement some or all of the functionality of some, or all, of the gateways, proxy servers, systems in accordance with embodiments of the present invention. The invention can also be implemented as a device or device program (e.g., a computer program and a computer program product) for performing some or all of the methods described herein. Such a program implementing the invention may be stored on a computer readable medium or may be in the form of one or more signals. Such signals may be downloaded from an Internet website, provided on a carrier signal, or provided in any other form.

It is to be noted that the above-described embodiments are illustrative of the invention and are not intended to be limiting, and that the invention may be devised without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as a limitation. The word "comprising" does not exclude the presence of the elements or steps that are not recited in the claims. The word "a" or "an" The invention can be implemented by means of hardware comprising several distinct elements and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means can be embodied by the same hardware item. The use of the words first, second, and third does not indicate any order. These words can be interpreted as names.

Claims

An instant communication method includes:

The instant messaging sender obtains an instant message;

The instant messaging sender adds the first extension information to the instant message, thereby obtaining the processed instant message;

The instant messaging sending end sends the processed instant message to the instant messaging receiving end, so that the instant messaging receiving end controls the operation authority of the instant message based on the first extended information.
The method of claim 1, wherein the instant messaging sender adds the first extension information to the instant message, including:

The instant messaging sender implants a first function field in the instant message;

The instant messaging sender assigns a value to the first function field, wherein the first function field is assigned a different value, and the instant messaging receiver has different operating rights to the instant message.
The method of claim 1, wherein the instant messaging sender adds the first extension information to the instant message, including:

The instant messaging sending end adds a first function tag to the instant message, and based on whether the first function tag exists in the instant message received by the instant messaging receiving end, the instant messaging receiving end is opposite The operation rights of the instant message are different.
The method according to claim 1, wherein said first extension information is used to control an operation authority of said instant messaging receiving end to forward and/or copy said instant message.
The method of claim 1 wherein the method further comprises:

If the first extended content includes the first preset content, the operation permission of the instant messaging receiving end to the instant message is prohibition of forwarding; and/or,

If the first extension information includes the second preset content, the operation permission of the instant communication receiving end to the instant message is prohibition of copying.
The method according to claim 1, wherein if the operation permission of the instant communication receiving end to the instant message is prohibition of forwarding, the first prompt information for prompting prohibition of forwarding is given at the instant communication receiving end. ;and / or,

And if the operation permission of the instant messaging receiving end to the instant message is prohibition of copying, the second prompting information for prompting for prohibiting copying is given at the instant messaging receiving end.
The method according to any one of claims 1-6, wherein the instant messaging sender adds the first extension information to the instant message, thereby obtaining the processed instant message, including:

The instant messaging sender packages the instant message into a new message;

The instant messaging sender adds the first extension information to the new message, and further obtains the processed instant message.
The method of claim 7, wherein the new message is a message generated by an encrypted packing method.
The method according to any one of claims 1-6, wherein the processed instant message further comprises: second extension information, wherein the second extension information is used to control an expiration time of the instant message.
The method according to claim 9, wherein the second extension information is a second function field, and if the value of the second function field includes a time point, the instant message expires after the time point If the value of the second function field does not include the time point, the instant message does not expire; or,

The second extension information is a second function identifier, and if the instant message obtained by the instant messaging receiver includes the second function identifier, the instant message expires after a preset time period; if the instant communication is If the second function tag is not included in the instant message obtained by the receiving end, the instant message does not expire.
The method according to any one of claims 1-6, wherein the instant messaging sender adds the first extended information to the instant messaging, including:

The instant messaging sender implants the first extended information in a message header of the instant messaging.
An instant communication control method includes:

The instant messaging receiving end receives the message sent by the instant messaging sender;

The instant messaging receiving end reads the first extended information added by the instant messaging sending end in the message;

The instant messaging receiving end implements control of the operating authority of the message according to the first extended information.
The instant messaging control method according to claim 12, wherein the instant communication receiving end reads the first extended information added by the instant messaging sending end in the message, including:

The instant messaging receiving end reads the assignment of the first function field in the message;

The instant messaging receiving end controls the operation authority of the message according to the first extended information, including:

The instant messaging receiver has different operating rights to the message based on the assignment of the first function field.
The method of claim 12, wherein the instant messaging receiving end reads the first extended information added by the instant messaging sender in the message, including:

The instant messaging receiving end reads the first function tag in the message;

The instant messaging receiving end implements different operating rights to the message according to whether the first function tag exists.
The method of claim 12, wherein the instant messaging receiving end controls the operation authority of the message according to the first extended information, including:

The instant messaging receiving end controls the operation authority of forwarding and/or copying the message according to the first extended information.
The method of claim 12, wherein the instant messaging receiving end controls the operation authority of the instant message according to the first extended information, including:

If the first extended content includes the first preset content, the operation permission of the instant messaging receiving end to the instant message is prohibition of forwarding; and/or,

If the first extension information includes the second preset content, the operation permission of the instant messaging receiving end to the instant message is prohibition of copying.
The method of claim 12, wherein the method further comprises:

If the operation permission of the instant messaging receiving end to the instant message is prohibitive forwarding, the instant messaging receiving end gives first prompt information for prompting to prohibit forwarding; and/or,

And if the operation permission of the instant communication receiving end to the instant message is prohibition of copying, the instant communication receiving end gives second prompt information for prompting to prohibit copying.
The method of claim 12 wherein said message is a message generated by an encrypted packing method.
The method of any of claims 12-17, wherein the method further comprises:

The instant messaging receiving end reads the second extended information from the message;

The instant messaging receiving end controls the expiration time of the message based on the second extended information.
The method of claim 19, wherein the instant messaging receiving end controls the expiration time of the message based on the second extended information, including:

If the second extended information is a second functional field, and the value of the second functional field includes a time point, the instant message expires after the time point; if the read second function field The value does not include the point in time, then the instant message does not expire; or,

If the second extended information is a second function tag, the message expires after a preset time period; if the second function tag is not included in the message, the instant message does not expire.
The method according to any one of claims 12-17, wherein the instant messaging receiving end reads the first extended information added by the instant messaging sending end in the message, including:

The instant messaging receiving end reads the first extended information from a message header of the message.
An instant messaging sender includes:

At least one processor;

And at least one memory communicably coupled to the at least one processor; One less memory includes processor-executable instructions that, when executed by the at least one processor, cause the instant messenger to perform at least the following operations:

Get instant messages;

Adding first extended information to the instant message, thereby obtaining the processed instant message;

And sending the processed instant message to the instant messaging receiving end, so that the instant messaging receiving end controls the operation authority of the instant message based on the first extended information.
The instant messaging sender of claim 22, wherein the adding the first extension information to the instant message, thereby obtaining the processed operation of the instant message comprises:

Implanting a first function field in the instant message;

And assigning a value to the first function field, wherein the first function field is assigned a different value, and the instant communication receiving end has different operation rights to the instant message.
The instant messaging sender of claim 22, wherein the adding the first extension information to the instant message, thereby obtaining the processed operation of the instant message comprises:

Adding a first function tag to the instant message, based on whether the first function tag exists in the instant message received by the instant communication receiving end, and the instant communication receiving end operates the instant message different.
The instant messaging sender of claim 22, wherein the first extension information is used to control an operation right of the instant messaging receiver to forward and/or copy the instant message.
The instant messaging transmitting end according to claim 22, wherein

If the first extended content includes the first preset content, the operation permission of the instant messaging receiving end to the instant message is prohibition of forwarding; and/or,

If the first extension information includes the second preset content, the operation permission of the instant communication receiving end to the instant message is prohibition of copying.
The instant messaging transmitting end according to claim 22, wherein

If the operation permission of the instant messaging receiving end to the instant message is prohibitive forwarding, then The communication receiving end gives first prompt information for prompting prohibition of forwarding; and/or,

And if the operation permission of the instant messaging receiving end to the instant message is prohibition of copying, the second prompting information for prompting for prohibiting copying is given at the instant messaging receiving end.
The instant messaging sender according to any one of claims 22-27, wherein the adding the first extension information to the instant message, so as to obtain the processed operation manner of the instant message, includes:

Packaging the instant message into a new message;

Adding the first extension information to the new message, and obtaining the processed instant message.
The instant messaging sender of claim 28, wherein the new message is a message generated by an encrypted packing method.
The instant messaging sender according to any one of claims 22-27, wherein the processed instant message further comprises: second extension information, wherein the second extension information is used to control the instant message. Dead time.
The instant messaging sender according to claim 30, wherein the second extension information is a second function field, and if the value of the second function field includes a time point, the instant message is at the time After the point expires; if the value of the second function field does not include the time point, the instant message does not expire; or,

The second extension information is a second function identifier. If the instant message obtained by the instant messaging receiver includes the second function identifier, the instant message expires after a preset time period; if the receiving end is If the obtained second message is not included in the obtained instant message, the instant message does not expire.
The instant messaging sender according to any one of claims 22-27, wherein the adding the first extension information to the instant message, so as to obtain the processed operation manner of the instant message, includes:

The first extended information is implanted in a message header of the instant message.
An instant messaging receiver includes:

At least one processor;

And at least one memory communicatively coupled to the at least one processor; the at least one memory comprising processor-executable instructions when the processor-executable instructions are executed by the at least one processor Causing the instant messaging receiver to perform at least the following operations:

Receiving an instant message sent by the sender;

Reading the first extended information added by the instant messaging sender in the instant message;

Controlling the operation authority of the instant message is implemented according to the first extension information.
The instant messaging receiving end according to claim 33, wherein the operation mode of reading the first extended information added by the instant messaging sending end in the instant message comprises:

Reading an assignment of the first function field in the instant message;

The operation rights to the instant message are different based on the assignment of the first function field.
The instant messaging receiving end according to claim 33, wherein the operation mode of reading the first extended information added by the instant messaging sending end in the instant message comprises:

Reading a first function tag in the instant message;

The operating authority for the instant message is different according to whether the first function tag exists.
The instant messaging receiving end according to claim 33, wherein the operation mode of implementing the control of the operation authority of the instant message according to the first extended information comprises:

Controlling the operation authority of forwarding and/or copying of the instant message is implemented according to the first extended information.
The instant messaging receiving end according to claim 33, wherein the operation mode of implementing the control of the operation authority of the instant message according to the first extended information comprises:

If the first extended content includes the first preset content, the operation permission for the instant message is prohibition of forwarding; and/or,

If the first extension information includes the second preset content, the operation authority for the instant message is prohibition of copying.
The instant messaging receiver of claim 33, wherein the operation further comprises:

If the operation permission of the instant messaging receiving end to the instant message is prohibitive forwarding, the instant messaging receiving end gives first prompt information for prompting to prohibit forwarding; and/or,

And if the operation permission of the instant communication receiving end to the instant message is prohibition of copying, the instant communication receiving end gives second prompt information for prompting to prohibit copying.
The instant messaging receiving end according to claim 33, wherein the instant message is a message generated by the instant messaging sender by encrypting and packaging.
The instant messaging receiving end according to any one of claims 33 to 38, wherein said reading the operation mode of the first extended information added by the instant messaging transmitting end in the instant message comprises: Reading the second extended information in the instant message;

The operating mode of implementing the control of the operation authority of the instant message according to the first extended information further includes controlling the expiration time of the instant message based on the second extended information.
The instant messaging receiving end according to claim 40, wherein the operation mode of implementing the control of the operation authority of the instant message according to the first extended information comprises:

If the second extended information is a second functional field, and the value of the second functional field includes a time point, the instant message expires after the time point; if the read second function field The value does not include the point in time, then the instant message does not expire; or,

If the second extended information is a second function tag, the instant message expires after a preset time period; if the second function tag is not included in the instant message, the instant message does not expire.
The instant messaging receiving end according to any one of claims 33 to 38, wherein the reading and reading the operation mode of the first extended information added by the instant messaging transmitting end in the instant message comprises: The header of the instant message reads the first extended information.
A computer program comprising computer readable code, when the instant messaging sender runs the computer readable code, causing the method of any of claims 1-11 to be performed.
A computer program comprising computer readable code, when the instant communication receiving end runs the computer readable code, causing the method of any one of claims 12-21 to be executed Row.
A computer readable medium storing the computer program of claim 43 or 44.
An instant messaging message sending method, the method comprising:

Obtaining a time key of an instant message to be sent, where the time key is used to limit a time limit during which the instant message to be sent can be viewed;

And encrypting the to-be-sent instant message according to the time key to generate an encrypted message;

Sending the encrypted message to the recipient, transmitting the time key to the server, and controlling, by the server, whether the recipient can view the encrypted message according to the time key.
The method of claim 46, wherein the obtaining the time key of the instant message to be sent comprises:

Obtaining an expiration time of the instant message to be sent, where the expiration time is an expiration time after the instant message is sent;

A time key is obtained according to the expiration time.
The method according to claim 46, wherein the encrypting the to-be-sent instant message according to the time key generates an encrypted message, and the specific method includes:

Encrypting the to-be-sent instant message with the time key to generate the encrypted message; or

Generating a session key, and encrypting the to-be-sent instant message with the combination of the time key and the session key to generate the encrypted message.
The method of claim 48, wherein the encrypting the to-be-sent instant message with the combination of the time key and the session key comprises:

And encrypting the instant message to be sent by using the session key, and generating a message data ciphertext in the encrypted message;

The session key is encrypted with the time key to generate a session key ciphertext in the encrypted message.
The method according to claim 49, wherein the encrypted message is specifically: an encapsulated packet generated by the message data ciphertext and the session key ciphertext before being sent.
The method according to any one of claims 46 to 50, wherein the time key is a time public key calculated by an identification cryptographic algorithm.
The method of claim 47, wherein the obtaining the expiration time of the instant message to be sent comprises:

The expiration time is generated by adding a sending time of the to-be-sent instant message to a fixed period.
An instant messaging message viewing method is applied to an instant messaging receiving end, and the method includes:

Receiving an encrypted message encrypted according to a time key, the time key being used to limit a time period during which the encrypted message can be viewed;

And generating, in response to viewing the viewing operation of the encrypted message, a key request to the server, where the key request is used to acquire the time key of the encrypted message;

Receiving feedback information of the server in response to the key request, where the feedback information is generated by the server according to the request time of the key request and the time key sent by the instant communication sending end, when the request time The feedback information is information indicating that the encrypted message is invalid when the time range corresponding to the time key is exceeded, and the feedback information is the time when the request time is within a time range corresponding to the time key. Key

Parsing the feedback information, and responding to the viewing operation according to the parsing result.
The method of claim 53 wherein said encrypted message is:

Encrypting the generated message with the time key; or

The message generated by the encryption is encrypted with the combination of the time key and the session key.
The method according to claim 53 or 54, wherein the responding to the viewing operation according to the parsing result comprises:

When the parsing result is invalid for the encrypted message, in response to the viewing operation, prompting the user that the encrypted message has expired cannot be viewed;

When the parsing result is the time key, in response to the viewing operation, the encrypted message is decrypted according to the time key, and the message data is obtained and displayed.
The method of claim 55, wherein said decrypting according to said time key The encrypted message includes:

Decrypting the encrypted message with the time key to obtain message data; or

Parsing the encapsulated packet of the encrypted message to obtain a session key ciphertext in the encrypted message; decrypting the session key ciphertext with the time key to obtain a session key; decrypting the session key by using the session key Encrypt the message data ciphertext in the message to get the message data.
An instant messaging message viewing control method is applied to a server, and the method includes:

Receiving a key request for acquiring an encrypted message time key sent by the instant communication receiving end;

Comparing, by the instant messaging receiver, a request time for requesting the time key with a time range corresponding to the time key;

If the request time exceeds the time range, the time key is refused to be issued to the instant communication receiving end, so that the instant communication receiving end cannot decrypt and view the encrypted message;

If the request time does not exceed the time range, the time key is issued to the instant messaging receiving end, so that the instant messaging receiving end decrypts and views the encrypted message according to the time key.
An instant messaging sender includes:

At least one processor;

And at least one memory communicatively coupled to the at least one processor; the at least one memory comprising processor-executable instructions when the processor-executable instructions are executed by the at least one processor Causing the instant messaging sender to perform at least the following operations:

Obtaining a time key of an instant message to be sent, where the time key is used to limit a time limit during which an instant message to be sent can be viewed;

And encrypting the to-be-sent instant message according to the time key to generate an encrypted message;

Sending the encrypted message to the recipient, transmitting the time key to the server, and controlling, by the server, whether the recipient can view the encrypted message according to the time key.
The instant messaging sender according to claim 58, wherein the obtaining a time key of the instant message to be sent, the specific operation mode of the time key for limiting the time limit in which the instant message to be sent can be viewed includes: :

Obtaining an expiration time of the instant message to be sent, where the expiration time is an expiration time after the instant message is sent;

A time key is obtained according to the expiration time.
The instant messaging sender according to claim 57, wherein the specific operation manner of encrypting the to-be-sent instant message according to the time key to generate an encrypted message comprises:

Encrypting the to-be-sent instant message with the time key to generate the encrypted message; or

Generating a session key, and encrypting the to-be-sent instant message with the combination of the time key and the session key to generate the encrypted message.
The instant messaging sender according to claim 60, wherein said generating a session key, encrypting said to-be-sent instant message with said combination of said time key and said session key to generate said encryption How messages are handled includes:

And encrypting the instant information to be sent by using the session key, and generating a message data ciphertext in the encrypted information;

The session key is encrypted with the time key to generate a session key ciphertext in the encrypted information.
The instant messaging sender of claim 61, wherein the encrypted message comprises: an encapsulated packet generated by the message data ciphertext and the session key ciphertext before being sent.
The instant messaging sender according to any one of claims 58 to 62, wherein the time key is a time public key calculated by using an identification cryptographic algorithm.
The instant messaging sender of claim 59, wherein the obtaining an expiration time of the instant message to be sent, and the operating time of the expiration time after the instant message is expired is:

The expiration time is generated by adding a sending time of the to-be-sent instant message to a fixed period.

The obtaining the expiration time of the instant message to be sent includes:

The expiration time is generated by adding a sending time of the to-be-sent instant message to a fixed period.
An instant messaging receiver includes:

At least one processor;

And at least one memory communicatively coupled to the at least one processor; the at least one memory comprising processor-executable instructions when the processor-executable instructions are executed by the at least one processor Causing the instant messaging receiver to perform at least the following operations:

Receiving an encrypted message encrypted according to a time key, the time key being used to limit a time period during which the encrypted message can be viewed;

And generating, in response to viewing the viewing operation of the encrypted message, a key request to the server, where the key request is used to acquire the time key of the encrypted message;

Receiving feedback information of the server in response to the key request, the feedback information is generated by the server according to the request time of the key request and the time key sent by the sending end, when the request time exceeds the The feedback information is information indicating that the encrypted message is invalid, and the feedback information is the time key when the request time is within a time range corresponding to the time key. ;

Parsing the feedback information, and responding to the viewing operation according to the parsing result.
The instant messaging receiver of claim 65, wherein the encrypted message is:

Encrypting the generated message with the time key; or

The message generated by the encryption is encrypted with the combination of the time key and the session key.
The instant messaging receiving end according to claim 65 or claim 66, wherein the parsing the feedback information and responding to the viewing operation according to the parsing result comprises:

When the parsing result is invalid for the encrypted message, in response to the viewing operation, prompting the user that the encrypted message has expired cannot be viewed;

When the parsing result is the time key, in response to the viewing operation, the encrypted message is decrypted according to the time key, and the message data is obtained and displayed.
The instant messaging receiving end according to claim 66, wherein the parsing the feedback information and responding to the viewing operation according to the parsing result comprises:

Decrypting the encrypted message with the time key to obtain message data; or

Parsing the encapsulated packet of the encrypted message to obtain a session key ciphertext in the encrypted message; decrypting the session key ciphertext with the time key to obtain a session key; decrypting the session key by using the session key Encrypt the message data ciphertext in the message to get the message data.
A server that includes:

At least one processor;

And at least one memory communicatively coupled to the at least one processor; the at least one memory comprising processor-executable instructions when the processor-executable instructions are executed by the at least one processor Causing the server to perform at least the following operations:

Receiving a key request for acquiring an encrypted message time key sent by the instant communication receiving end;

Comparing, by the instant messaging receiver, a request time for requesting the time key with a time range corresponding to the time key;

When the request time exceeds the time range, the time key is refused to be issued to the instant communication receiving end, so that the instant communication receiving end cannot decrypt and view the encrypted message;

And when the request time does not exceed the time range, the time key is issued to the instant communication receiving end, so that the instant communication receiving end decrypts and views the encrypted message according to the time key.
A computer program comprising computer readable code, when the instant messaging sender runs the computer readable code, causing the method of any of claims 46-52 to be performed.
A computer program comprising computer readable code, when the instant communication receiving end runs the computer readable code, causing the method of any of claims 53-56 to be performed.
A computer program comprising computer readable code, when the server runs the computer readable code, causing the method of claim 57 to be performed.
A computer readable medium storing the computer program of any of claims 70-72.