WO2016161717A1

WO2016161717A1 - Data processing method and terminal

Info

Publication number: WO2016161717A1
Application number: PCT/CN2015/084834
Authority: WO
Inventors: 魏明业
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-04-09
Filing date: 2015-07-22
Publication date: 2016-10-13
Also published as: CN106162622A

Abstract

A data processing method and terminal. The method comprises: performing differentiated encryption, via differentiated identifiers, by a terminal, on obtained communication information; when the communication information is displayed, performing differentiated decryption. The terminal employs differentiated identifiers to perform differentiated encryption, and the information is displayed only after differentiated decryption; in this way, the present invention enables privacy protection of communication information.

Description

Method and terminal for realizing data processing

Technical field

This document relates to data communication technology, especially a method and terminal for implementing data processing.

Background technique

With the continuous development of wireless communication application technology, users have higher and higher protection requirements for personal privacy. In order to protect the privacy of users, data processing related to privacy is generally performed; among them, the privacy of communication applications applied to user communication Of particular interest are communication information related to personal privacy in instant messaging applications.

Taking instant communication as an example, the general encryption of the communication information realized by the current encryption method is performed. After the general encrypted communication information is stored at the transmitting end, the communication information is obtained through general decryption; after receiving the universal encrypted communication information, the receiving end adopts the universal Decryption implements decryption. The communication information is encrypted by means of universal encryption, and the communication information is decrypted when the universally encrypted communication information is copied to any terminal capable of general decryption. Although such encryption satisfies the requirements of privacy protection to a certain extent, any decryptable terminal can be decrypted, which seriously affects the security protection of privacy. Therefore, there is a need for a way to handle user privacy more securely.

Summary of the invention

The embodiments of the present invention provide a method and a terminal for implementing data processing, which can truly meet the requirements for security protection of a terminal for privacy.

An embodiment of the present invention provides a method for implementing data processing, including:

The terminal performs differential encryption on the obtained communication information by using the differentiated identifier;

Differentiated decryption is performed when communication information is displayed.

Optionally, performing differential encryption to encrypt the differentiated identifier of the terminal as an encryption parameter;

The differentiated identifier is a unique identifier of the terminal or a unique identifier of the SIM card of the customer identification module carried by the terminal.

Optionally, when the differentiated identifier is a unique identifier of the terminal, the terminal unique identifier is: a mobile device international identity code IMEI or a physical address MAC address;

When the differentiated identifier is a unique identifier of the subscriber identity module SIM card loaded by the terminal, the terminal unique identifier is: an international mobile subscriber identity IMSI number of the SIM card.

Optionally, the method further includes: saving the communication information that completes the differential encryption in a secure storage space of the terminal.

Optionally, the secure storage control is unmountable as a readable and writable storage space.

Optionally, when the terminal is a sending end,

The performing the differentiated encryption specifically includes:

After the transmitting end performs general encryption on the input communication information, the transmitting end performs differential encryption.

Optionally, when the terminal is a receiving end, the performing the differentiated encryption specifically includes:

The receiving end performs differential encryption on the receiving end of the received universally encrypted communication information.

After the receiving end decrypts the communication information differentiated and encrypted by the transmitting end, the receiving end performs differential encryption on the decrypted communication information.

Optionally, before the receiving end decrypts the differentially encrypted communication information of the sending end, the method further includes:

Receiving, by the receiving end, the decryption information used for decrypting the differential encryption of the transmitting end, when receiving the communication information differentiated and encrypted by the transmitting end, to perform differentially encrypted communication on the transmitting end according to the decrypted information encrypted by the decrypting transmitting end. Information decryption.

Optionally, the method further includes deleting the universally encrypted communication information after completing the differential encryption of the universally encrypted communication information.

Optionally, the method further includes: after the receiving end decrypts the communication information that is differentially encrypted by the transmitting end, deleting the decryption information used to decrypt the differential encryption of the transmitting end.

Optionally, the method further includes: before performing differential decryption:

The differential decryption matching instruction is preset, and when the input differentiated decryption matching instruction is the same as the preset differential decryption matching instruction, the differential information is allowed to be decrypted when the communication information is displayed; when the input differential decryption matching instruction is preset When the differential decryption matching instruction is different, the differential decryption is performed when the communication information is rejected.

In another aspect, the application further provides a terminal for implementing data processing, including a differentiated encryption unit and a decryption display unit; wherein

a differentiated encryption unit, configured to perform differential encryption on the obtained communication information by using a differentiated identifier;

The decryption display unit performs differential decryption when displaying communication information.

Optionally, the differentiated encryption unit is specifically configured to encrypt, by using the differentiated identifier of the terminal as the encryption parameter, the obtained communication information;

Optionally, the differentiated encryption unit is specifically configured to: use the IMEI or MAC address of the terminal, or the IMSI number of the SIM card loaded by the terminal as the differentiated identifier for the obtained communication information, and encrypt the differential identifier as an encryption parameter. .

Optionally, the terminal further includes an information storage unit, configured to save the differentiated encrypted communication information completed by the differentiated decryption unit in a secure storage space.

Optionally, when the terminal is a sending end, the differentiated encryption unit is specifically configured to:

After the input communication information is generally encrypted, the sender is differentiated and encrypted.

Optionally, when the terminal is a receiving end, the differentiated encryption unit is specifically configured to:

The received universally encrypted communication information is differentially encrypted at the receiving end.

After decrypting the communication information differentiated and encrypted by the transmitting end, the decrypted communication information is differentially encrypted at the receiving end.

Optionally, when the terminal is a receiving end, the terminal further includes a receiving unit,

And receiving, for receiving the differentially encrypted communication information sent by the sending end, receiving the decryption information for decrypting the differential encryption of the transmitting end, so that the differentiated encryption unit sends the decrypted information that is differentially encrypted according to the decrypting transmitting end. Differentiated encrypted communication information is decrypted.

Optionally, when the terminal further includes a first deleting unit, the universally encrypted communication information is deleted after the differential encryption of the universally encrypted communication information is completed.

Optionally, when the terminal is a receiving end, the terminal further includes a second deleting unit, configured to delete the used to decrypt the sending end after the differentiated encryption unit decrypts the differentially encrypted communication information of the sending end. Differentiate encrypted decryption information.

Optionally, the terminal further includes a setting unit, configured to preset a differential decryption matching instruction, and before the differential decryption is performed, when the input differentiated decryption matching instruction is the same as the preset differential decryption matching instruction, the display is allowed to be displayed. Differentiated decryption is performed when the communication information is different; when the input differentiated decryption matching instruction is different from the previously set differentiated decryption matching instruction, the differential decryption is performed when the communication information is refused to be displayed.

A computer readable storage medium storing program instructions that, when executed, implement the methods described above.

In the embodiment of the present invention, the terminal uses the differentiated identifier to perform differential encryption, and only displays through differential decryption, thereby implementing privacy protection of the communication information; in addition, storing the differentiated encrypted communication information in the secure storage space of the terminal. The security of communication information is further improved.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

1 is a flow chart of a method for implementing data processing according to the present invention;

2 is a structural block diagram of a terminal for implementing data processing according to the present invention;

3 is a flow chart of a method according to a first embodiment of the present invention;

4 is a flow chart of a method according to a second embodiment of the present invention;

Figure 5 is a block diagram showing the structure of a system according to a second embodiment of the present invention;

6 is a flow chart of a method according to a third embodiment of the present invention;

Figure 7 is a flowchart of a method according to a fourth embodiment of the present invention;

Figure 8 is a block diagram showing the structure of a system according to a fourth embodiment of the present invention.

detailed description

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments in the present application may be arbitrarily combined with each other.

FIG. 1 is a flowchart of a method for implementing data processing according to an embodiment of the present invention. As shown in FIG. 1 , the method includes:

Step 100: The terminal performs differential encryption on the obtained communication information by using a differentiated identifier.

Only the terminal has differentially decrypted decryption information. In this step, the differentiated encryption is performed by using the differentiated identifier of the terminal as the encryption parameter for encryption;

The differentiated identifier can be a unique identifier of the terminal or a unique identifier of a Subscriber Identity Module (SIM) card loaded by the terminal.

Optionally, when the differentiated identifier is a unique identifier of the terminal, the terminal unique identifier is: a mobile device international identity code (IMEI) or a physical address (MAC) address;

When the differentiated identifier is a unique identifier of the subscriber identity module SIM card loaded by the terminal, the terminal unique identifier is: an International Mobile Subscriber Identity (IMSI) number of the SIM card.

The method of the embodiment of the present invention further includes: saving the communication information that completes the differential encryption in a secure storage space of the terminal. among them,

The secure storage space is unmountable as a readable and writable storage space. For example, the Qualcomm chip itself has a Secure File System (SFS) area, which is a portion of the inaccessible memory that is partitioned from the Embedded File System (EFS) area. If the terminal is the terminal of the system, a small area is defined in the memory area of the terminal as the unmount file system (umount) area. As the security domain of the terminal, the security domain of the terminal cannot be mounted, that is, it cannot be mounted. Read and write. The dual system terminal has two independent memory spaces, and one of the memory spaces is selected as the secure storage space. The secure storage space is used to store communication information for differential encryption, which ensures the security of differentiated encrypted communication information.

The differential encryption of the obtained communication information in step 100 includes:

Solution 1. When the terminal is the transmitting end, the transmitting end performs general encryption on the input communication information, and then performs differential authentication on the transmitting end. Universal encryption is performed by using an encryption method shared by a plurality of terminals, and each of the terminals has the decryption information of the universal encryption.

When the terminal is the receiving end, performing differentiated encryption includes:

The receiving end performs differential encryption on the receiving end of the received universal encrypted communication information.

It should be noted that the terminal can simultaneously perform differential encryption of the communication information as the transmitting end and the receiving end, or can perform differential encryption only as the transmitting end or the receiving end.

When the solution 1 is adopted, the method of the embodiment of the present invention further includes: deleting the universally encrypted communication information after completing the differential encryption of the universally encrypted communication information.

It should be noted that, in the actual application terminal, the transmitting end performs differential encryption, and the receiving end still uses only the general encryption method for encryption.

Solution 2: When the terminal is the transmitting end, the transmitting end directly performs differential authentication and encryption on the input communication information.

When the terminal is the receiving end, the receiving end decrypts the communication information differentiated and encrypted by the transmitting end, and performs differential authentication and encryption on the decrypted communication information.

Optionally, before the decryption of the communication information that is differentiated and encrypted by the sending end, the solution 2 includes:

When receiving the communication information differentiated and encrypted by the transmitting end, the receiving end receives the decryption information for decrypting the differential encryption of the transmitting end, and decrypts the communication information differentiated and encrypted by the transmitting end according to the decrypted information encrypted by the decrypting transmitting end.

After the receiving end decrypts the communication information differentiated and encrypted by the transmitting end, the method further includes: deleting the decrypting information used to decrypt the differential encryption of the transmitting end.

It should be noted that, in the scheme 1 and the scheme 2, after the universally encrypted communication information or the decryption information used for decrypting the differential encryption of the sender is deleted, whether it is the sender or the receiver, only the terminal is uniquely saved. The identifier or the unique identifier of the SIM card of the customer identification module loaded by the terminal is used as the encryption parameter to encrypt the encrypted information. After the communication information is differentiated and encrypted, the terminal that conforms to the unique identifier can only adopt the unique identifier as the encryption parameter. Decrypting the information to decrypt the communication information. Therefore, the privacy of the communication information is guaranteed.

In step 101, when the communication information is displayed, differential decryption is performed.

Before performing the differential decryption, the method of the embodiment of the present invention further includes:

Presetting the differential decryption matching instruction, when the input differentiated decryption matching instruction is the same as the pre-set differential decryption matching instruction, allowing differential information decryption when displaying the communication information; When the input differentiated decryption matching command is different from the previously set differentiated decryption matching command, the differential decryption is performed when the communication information is refused to be displayed.

It should be noted that the differential decryption matching instruction is similarly set to the unlocking instruction of the terminal, and the terminal is differentiated and decrypted and matched with the matching command to ensure the privacy of the terminal communication information.

2 is a structural block diagram of a terminal for implementing data processing according to an embodiment of the present invention. As shown in FIG. 2, the method includes: a differentiated encryption unit and a decryption display unit;

The differentiated encryption unit is configured to perform differential encryption on the obtained communication information by using the differentiated identifier;

The decryption display unit is set to display the communication information and perform differential decryption.

The differentiated encryption unit is configured to encrypt the obtained communication information by using the differentiated identifier of the terminal as an encryption parameter;

Optionally, the differentiated encryption unit is configured to use the IMEI or MAC address of the terminal or the IMSI number of the SIM card loaded by the terminal as the differentiated identifier for the obtained communication information, and encrypt the differential identifier as an encryption parameter. .

The terminal of the embodiment of the present invention may further include an information storage unit configured to save the differentiated encrypted communication information completed by the differentiated decryption unit in a secure storage space.

When the terminal is the sender, the differentiated encryption unit is set to,

When the terminal is the receiving end, the differentiated encryption unit is set to,

Optionally, the terminal may further include a first deleting unit, configured to delete the universally encrypted communication information after completing the differential encryption of the universally encrypted communication information.

After decrypting the communication information differentiated and encrypted by the sender, performing the decrypted communication information Receiver differentiated encryption.

When the terminal is a receiving end, the terminal further includes a receiving unit,

Set to receive the differentially encrypted communication information sent by the transmitting end, and receive the decryption information used to decrypt the differential encryption of the transmitting end, so that the differentiated encryption unit sends the decrypted information encrypted according to the decrypted transmitting end to the decrypted information. Differentiated encrypted communication information is decrypted.

When the terminal is the receiving end, the terminal in the embodiment of the present invention may further include a second deleting unit, configured to delete the differential information used for decrypting the sending end after the differentiated encryption unit decrypts the communication information differentiated and encrypted by the sending end. Encrypted decryption information.

The terminal of the embodiment of the present invention may further include a setting unit configured to preset a differential decryption matching instruction, and before the differential decryption is performed, when the input differentiated decryption matching instruction is the same as the preset differential decryption matching instruction, the display is allowed to be displayed. Differentiated decryption is performed when the communication information is different; when the input differentiated decryption matching instruction is different from the previously set differentiated decryption matching instruction, the differential decryption is performed when the communication information is refused to be displayed.

For example, before the communication information is viewed and differentiated, if the terminal sets the differential decryption matching instruction in advance, when the terminal views the signal of the communication information, the terminal first performs verification of the differential decryption matching instruction (for example, password) when inputting The differentiated decryption matching instruction is the same as the pre-set differential decryption matching instruction, and allows differential decryption when the communication information is displayed; when the input differentiated decryption matching instruction is different from the preset differential decryption matching instruction, the display is rejected Differentiate decryption when communicating information.

It should be noted that, in the embodiment of the present invention, the unit at the transmitting end and the unit at the receiving end may be integrated into the same terminal to form a terminal that performs differential encryption on both the transmitted communication information and the received communication information.

The method of the present invention is described in detail below by way of specific examples, which are merely used to illustrate the invention and are not intended to limit the scope of the method of the invention.

Example 1

FIG. 3 is a flowchart of a method according to a first embodiment of the present invention. As shown in FIG. 3, the method includes:

Step 300: The terminal acquires communication information input by the user, and performs general encryption on the communication information to obtain universally encrypted communication information.

Here, all terminals with universal decryption function can decrypt the universally encrypted communication information.

Step 301: Perform differential encryption on the universally encrypted communication information. Optionally, the unique identifier of the terminal or the unique identifier of the SIM card loaded by the terminal is used as an encryption parameter for encryption, that is, only a terminal with the same unique identifier can be set. The decryption process.

It should be noted that, in the actual application, the unique identification information is generally encoded and decoded, that is, the plain text display is not used.

Step 302: After the differential encryption is completed, the terminal deletes the universally encrypted communication information; that is, only the differentially encrypted communication information is saved on the terminal at this time, and the other terminal cannot obtain the decrypted unique identifier, and therefore cannot decrypt. The communication information is guaranteed to be secure.

Step 303: The differentially encrypted communication information is saved in a secure storage space of the terminal. Optionally, the secure storage space is a storage space that cannot be mounted as a readable and writable storage. For example, the Qualcomm chip itself has an SFS area, which is a portion of the inaccessible memory that is partitioned from the Encrypting File System (EFS) area. A mobile phone with a security domain divides a small area on the memory area as an unmount file system (umount) area. The area cannot be mounted, that is, it cannot be mounted as readable and writable. In dual systems, there are two separate memory spaces, and the secure storage space will occupy dedicated memory.

Step 304: When displaying the communication information, the terminal performs differential decryption and display by using the decryption information corresponding to the differentiated encryption; that is, decryption is performed by using the decrypted information including the differentiated decryption with the same unique identifier.

The terminals of steps 300-304 serve as the sender to perform privacy protection of the communication information.

Example 2

This embodiment describes a process of differential encryption and decryption of communication information from the receiving end.

4 is a flowchart of a method according to a second embodiment of the present invention. As shown in FIG. 4, the method includes:

Step 400: The receiving end receives the communication information from the transmitting end and uses universal encryption.

It should be noted that if the receiving end is a terminal that does not use differential encryption to process the communication information, the communication information may be decrypted and displayed in accordance with the general encryption processing procedure.

Step 401: The receiving end performs differential encryption on the receiving end for the received universal encrypted communication information.

Step 402: After completing the differential encryption, deleting the received universal encrypted communication information.

Step 403: Save the differentiated and encrypted communication information in a secure storage space of the terminal.

Step 404: When displaying the communication information, the terminal performs differential decryption and display by using the decryption information corresponding to the differentiated encryption.

FIG. 5 is a structural block diagram of a system according to a second embodiment of the present invention. As shown in FIG. 5, after the transmitting end encrypts the input communication information, the transmitting end performs differential encryption processing on the transmitting end, and differentiates encryption at the transmitting end. The processing flow refers to the description of Embodiment 1. The receiving end performs differential encryption on the receiving end according to steps 400-404 to ensure the privacy of the communication information.

Example 3

FIG. 6 is a flowchart of a method according to a third embodiment of the present invention. As shown in FIG. 6, the method includes:

Step 600: Acquire communication information, and add a random number to the header or the tail of the communication information for general encryption. Here, different random numbers can be used each time to ensure the security of the communication information during transmission. In addition, when the universal encrypted communication information is sent to the receiving end, the decrypted public key of the universal encryption is carried in the sending process.

Step 601: The transmitting end performs differential encryption on the universally encrypted communication information, and the encryption algorithm encrypts the unique identifier sent by the encryption algorithm as a parameter; for example, the IMEI number or the MEID number is used as a parameter for encryption, and the encrypted file is added to the message file after encryption. The information is decrypted and used as identification during the decryption process. It should be noted that, for the decryption process, it is completely corresponding to the encryption process, and the encryption parameter is encrypted by the unique identifier, and the decryption information is decrypted in the decryption information for the terminal that allows the decryption to be decrypted by the unique identifier. For differential decryption.

Step 602: After decrypting and decrypting the information, the communication information is obtained and displayed.

Example 4

FIG. 7 is a flowchart of a method according to a fourth embodiment of the present invention. As shown in FIG. 7, the method includes:

Step 700: The receiving end receives the differentiated encrypted communication information from the transmitting end and the decryption information used to decrypt the differential encryption of the sending end.

Step 701: Decrypt the differentially encrypted communication information according to the decryption information. Since the decryption information is based on the decryption information generated by the sender and the encrypted unique identifier, the decryption may be implemented. For other terminal decryption information, because it is not available The unique identifier sent, unable to generate decryption information that can decrypt the differentiated encrypted communication information.

Step 702: After decrypting the communication information of the differential encryption of the transmitting end, deleting the parsing information, performing differential encryption on the decrypted communication information; that is, using the IMEI number or MAC address of the receiving end, and the IMSI number of the SIM card as the encryption. The parameters are differentially encrypted at the receiving end.

Step 703: When displaying the communication information, the receiving end performs differential decryption and display by using the decryption information corresponding to the differentiated encryption.

8 is a structural block diagram of a system according to a fourth embodiment of the present invention. As shown in FIG. 8, the transmitting end directly performs differential encryption on the input communication information, and performs related processing of differentiated encryption; the receiving end follows steps 700-703. The communication information differentiated and encrypted by the sender sent by the sender is differentiated and decrypted by the sender according to the decryption information sent by the sender, and the decryption information is deleted after the sender differentiates and decrypts, and the receiver differentiates and decrypts the receiver. The communication information is differentially encrypted at the receiving end to ensure the privacy of the communication information.

One of ordinary skill in the art will appreciate that all or a portion of the steps of the above-described embodiments can be implemented using a computer program flow, which can be stored in a computer readable storage medium, such as on a corresponding hardware platform (eg, The system, device, device, device, etc. are executed, and when executed, include one or a combination of the steps of the method embodiments.

Alternatively, all or part of the steps of the above embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve. The devices/function modules/functional units in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.

When the device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium. The above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk, etc.

Industrial applicability

In the embodiment of the present invention, the terminal uses the differentiated identifier to perform differential encryption, and the display is performed only through differential decryption, thereby realizing the privacy protection of the communication information; in addition, the differential encryption is implemented. The communication information is stored in the secure storage space of the terminal, which further improves the security of the communication information.

Claims

A method of implementing data processing, including:

The terminal performs differential encryption on the obtained communication information by using the differentiated identifier;

When the terminal displays the communication information, differential decryption is performed.
The method according to claim 1, wherein the performing differential encryption is performed by encrypting the differentiated identifier of the terminal as an encryption parameter;

The differentiated identifier is a unique identifier of the terminal or a unique identifier of the SIM card of the customer identification module carried by the terminal.
The method of claim 2, wherein

When the differentiated identifier is a unique identifier of the terminal, the terminal unique identifier is: a mobile device international identity code IMEI or a physical address MAC address;

When the differentiated identifier is a unique identifier of the subscriber identity module SIM card loaded by the terminal, the terminal unique identifier is: an international mobile subscriber identity IMSI number of the SIM card.
The method of claim 1, further comprising: saving the communication information that completes the differential encryption in a secure storage space of the terminal.
The method of claim 4, wherein the secure storage control is unmountable as a readable and writable storage space.
The method of claim 1, wherein when the terminal is a transmitting end,

The performing differential encryption includes:

After the transmitting end performs general encryption on the input communication information, the transmitting end performs differential encryption.
The method according to claim 1, wherein when the terminal is a receiving end, the performing differential encryption comprises:

The receiving end performs differential encryption on the receiving end of the received universally encrypted communication information.
The method according to claim 1, wherein when the terminal is a receiving end, the performing differential encryption comprises:

After the receiving end decrypts the communication information differentiated and encrypted by the transmitting end, the decrypted communication The information is differentially encrypted at the receiving end.
The method according to claim 8, wherein before the receiving end decrypts the communication information differentiated and encrypted by the transmitting end, the method further comprises:

The receiving end receives the decryption information for decrypting the differential encryption of the transmitting end when receiving the communication information differentiated and encrypted by the transmitting end, so as to decrypt the communication information differentiated and encrypted by the transmitting end according to the decrypted information.
The method according to claim 6 or 7, further comprising deleting the universally encrypted communication information after completing the differential encryption of the universally encrypted communication information.
The method according to claim 9, further comprising: after decrypting the communication information differentiated and encrypted by the transmitting end, deleting the decryption information for decrypting the differential encryption of the transmitting end.
The method according to any one of claims 1 to 5, wherein the method further comprises: before performing differential decryption:

The differential decryption matching instruction is preset, and when the input differentiated decryption matching instruction is the same as the preset differential decryption matching instruction, the differential information is allowed to be decrypted when the communication information is displayed; when the input differential decryption matching instruction is preset When the differential decryption matching instruction is different, the differential decryption is performed when the communication information is rejected.
A terminal for implementing data processing, comprising a differentiated encryption unit and a decryption display unit; wherein

The differentiated encryption unit is configured to perform differential encryption on the obtained communication information by using the differentiated identifier;

The decryption display unit is set to display the communication information and perform differential decryption.
The terminal according to claim 13, wherein the differentiated encryption unit is configured to encrypt the obtained communication information with the differentiated identifier of the terminal as an encryption parameter;

The differentiated identifier is a unique identifier of the terminal or a unique identifier of the SIM card of the customer identification module carried by the terminal.
The terminal according to claim 14, wherein the differentiated encryption unit is configured to set the communication information to the IMEI or MAC address of the terminal, or the SIM card loaded by the terminal. The IMSI number is used as the differentiated identifier, and the differentiated identifier is used as the encryption parameter for encryption.
The terminal according to claim 13, wherein the terminal further comprises an information storage unit arranged to store the differentiated encrypted communication information completed by the differentiated decryption unit in a secure storage space.
The terminal according to claim 13, wherein when the terminal is a transmitting end, the differentiated encryption unit is set to

After the input communication information is generally encrypted, the sender is differentiated and encrypted.
The terminal according to claim 13, wherein when the terminal is a receiving end, the differentiated encryption unit is set to

The received universally encrypted communication information is differentially encrypted at the receiving end.
The terminal according to claim 13, wherein when the terminal is a receiving end, the differentiated encryption unit is set to

After decrypting the communication information differentiated and encrypted by the transmitting end, the decrypted communication information is differentially encrypted at the receiving end.
The terminal according to claim 19, wherein when the terminal is a receiving end, the terminal further includes a receiving unit,

And receiving, when receiving the differentially encrypted communication information sent by the transmitting end, receiving decryption information for decrypting the differential encryption of the transmitting end, so that the differentiated encryption unit decrypts the communication information for transmitting the differentiated encryption according to the decrypted information. .
The terminal according to claim 17 or 18, wherein when the terminal further includes a first deleting unit, the setting is to delete the universally encrypted communication information after completing the differential encryption of the universally encrypted communication information. .
The terminal according to claim 20, wherein when the end is a receiving end, the terminal further includes a second deleting unit, configured to delete after the differentiated encryption unit decrypts the communication information differentiated and encrypted by the transmitting end. The decryption information used to decrypt the differential encryption of the sender.
The terminal according to any one of claims 13 to 16, wherein the terminal further comprises a setting unit configured to preset a differential decryption matching instruction, and before inputting the differential decryption matching instruction and the prior When the set differential decryption match instruction is the same, it is allowed to display Differentiated decryption is performed when the communication information is displayed; when the input differentiated decryption matching instruction is different from the previously set differentiated decryption matching instruction, the differential decryption is performed when the communication information is rejected.
A computer readable storage medium storing program instructions that, when executed, implement the method of any of claims 1-12.