WO2018059303A1

WO2018059303A1 - Method and device for encrypting and decrypting information in short message

Info

Publication number: WO2018059303A1
Application number: PCT/CN2017/102768
Authority: WO
Inventors: 张勇
Original assignee: 中兴通讯股份有限公司
Priority date: 2016-09-30
Filing date: 2017-09-21
Publication date: 2018-04-05
Also published as: CN107889102A; CN107889102B

Abstract

A method and device for encrypting and decrypting information in a short message. The method comprises: a lower layer of a mobile terminal receives at least one original short message comprising private information; when the original short message satisfies an encryption criterion, the lower layer of the mobile terminal encrypts the private information in the original short message to generate an encrypted short message, transmits to a short message application of the mobile terminal the encrypted short message; and upon receiving the encrypted short message, the short message application of the mobile terminal decrypts the encrypted short message.

Description

Method and device for information encryption and decryption in short message

Technical field

The present disclosure relates to, but is not limited to, the field of communication technologies, and in particular, to a method and apparatus for encrypting and decrypting information in a short message.

Background technique

With the increasing popularity of mobile terminals, such as mobile phones, tablets, smart watches, etc., mobile terminals have become portable mobile electronic devices commonly used in people's lives. As a basic communication service in mobile terminals, the short message function has already been used. Become one of the essential features of mobile terminals. With the emergence of various third-party applications in mobile terminals, many third-party applications have applied for permission to read short messages. Some malicious third-party applications may steal the user's text messages to gain the user's personal privacy and threaten the user's information security. In order to avoid user information leakage, the mobile terminal short message encryption method is often used, and only the preset short message application provided by the mobile terminal manufacturer is allowed to view the real short message content, and other third party applications cannot obtain the real short message content, thereby realizing the information about the user mobile terminal. protection of.

Summary of the invention

The following is an overview of the topics detailed in this document. This Summary is not intended to limit the scope of the claims.

The short message encryption method may include: the first method, the sender mobile terminal encrypts the original short message text, and after transmitting the encrypted short message text to the receiving mobile terminal, the receiving mobile terminal decrypts the encrypted short message text, and The decrypted text message is displayed. In the second method, after receiving the short message, the receiving party displays the encrypted short message text, and the receiving party can display the original short message text after the user inputs the password.

However, for the first method, the mobile terminal of the sender and the receiver is required to cooperate. If the sender and the receiver use different types of mobile terminals, at least one of the mobile terminals does not have an encryption function, or both mobile terminals. With different encryption mechanisms, this method cannot be implemented. Now, therefore, the first method has great limitations in terms of practicality.

For the second method, it is roughly to prevent other people from viewing the short message after receiving the mobile terminal, so the operation of inputting the password is added when viewing the short message. However, many third-party applications installed on mobile terminals can bypass this encryption mechanism and directly receive or read short messages. Therefore, the second method is also insufficient in practicality.

This paper provides a method and device for encrypting and decrypting information in a short message, which realizes the protection of important private information in the short message of the user, reduces the risk of leakage of important private information of the user, ensures the security of the user information, and improves the user experience.

An embodiment of the present disclosure provides a method for encrypting and decrypting information in a short message, including:

The bottom layer of the mobile terminal receives at least one original short message containing private information;

When the original short message satisfies the encryption condition, the mobile terminal bottom layer encrypts the private information in the original short message to generate an encrypted short message, and sends the encrypted short message to the short message application of the mobile terminal;

After receiving the encrypted short message, the short message application of the mobile terminal decrypts the encrypted short message.

In an exemplary embodiment, the privacy information includes at least one of the following: digital combination information, and character combination information that is not all numbers.

In an exemplary embodiment, when the private information includes digital combination information, the encryption condition includes that the length of the digital combination information included in the original short message is greater than or equal to a length threshold;

When the private information includes character combination information that is not all digits, the encryption condition includes that the original short message includes a character string that satisfies the setting condition.

In an exemplary embodiment, the encryption condition further includes: the mobile terminal short message encryption control switch is turned on.

In an exemplary embodiment, the method further includes: the mobile terminal bottom layer transmitting the original short message to a third party application in a preset third party application list.

In an exemplary embodiment, the preset third-party application list includes: a third-party application trusted by the user in the mobile terminal.

An embodiment of the present disclosure further provides an apparatus for encrypting and decrypting information in a short message, where the apparatus includes a bottom message of a mobile terminal and a short message application of the mobile terminal;

The bottom layer of the mobile terminal is configured to: receive at least one original short message including the private information; and when the original short message satisfies the encryption condition, encrypt the private information in the original short message to generate an encrypted short message, to the mobile terminal The short message application sends the encrypted short message;

The short message application of the mobile terminal is configured to: after receiving the encrypted short message, decrypt the encrypted short message.

In an exemplary embodiment, the mobile terminal bottom layer is further configured to: send the original short message to a third-party application in a preset third-party application list.

Embodiments of the present disclosure also provide a computer readable storage medium storing computer executable instructions, the method of implementing encryption and decryption of information in the short message when the computer executable instructions are executed.

In the embodiment of the present disclosure, the mobile terminal bottom layer receives at least one original short message including the private information; when the original short message satisfies the encryption condition, the mobile terminal bottom layer encrypts the private information in the original short message to generate an encrypted short message. Sending the encrypted short message to the short message application of the mobile terminal; after receiving the encrypted short message, the short message application of the mobile terminal decrypts the encrypted short message; thus, the sender and the receiver of the mobile terminal may not be needed. Cooperate with each other to realize the encryption protection of important private information in the user's short message, reduce the risk of leakage of important private information of the user, ensure the security of the user information, and enhance the user experience.

Other aspects will be apparent upon reading and understanding the drawings and detailed description.

BRIEF abstract

1 is a flow chart of a method for encrypting and decrypting information in a short message;

2 is a flow chart of another method for encrypting and decrypting information in a short message;

3 is a flow chart of another method for encrypting and decrypting information in a short message;

FIG. 4 is a schematic structural diagram of an apparatus for encrypting and decrypting information in a short message.

Preferred embodiment of the present disclosure

Embodiments of the present disclosure will be described below with reference to the accompanying drawings.

FIG. 1 is a flowchart of a method for encrypting and decrypting information in a short message. As shown in FIG. 1, the method includes:

Step 100: The mobile terminal bottom layer receives at least one original short message including private information.

Here, the mobile terminal may be a mobile phone, a tablet computer, a smart watch, etc., and the bottom layer of the mobile terminal may be a telecommunication framework layer of an Android mobile phone, an operating system (OS) layer, a driver layer, and the like.

The privacy information may include at least one of the following: digital information, character combination information. Optionally, the private information may include at least one of the following: a bank card number, a password, a mobile phone number, an email address, a web address, and the like.

Step 101: When the original short message satisfies the encryption condition, the mobile terminal bottom layer encrypts the private information in the original short message to generate an encrypted short message, and sends the encrypted short message to the short message application of the mobile terminal.

Optionally, when the private information includes the digital combination information, the encryption condition may include that the length of the digital combination information included in the original short message is greater than or equal to a length threshold; for example, the original short message includes a digital combination information of 2,563,689. The set length threshold is 4. When the length 7 of the digital combination information is greater than the length threshold 4, the original short message needs to be encrypted.

When the private information includes the character combination information that is not all digits, the encryption condition may include: the original short message includes a character string that satisfies the setting condition; and the setting condition may be that the original short message includes the specified string identifier. Here, the specified string identifier may be a special string identifier in a mailbox, a web address, etc., for example, .com, .net, .org, @163.com, @gmail.com, etc.; When the original short message contains a web address information www.un.org, the specified string identifier .org is detected at this time, and it can be determined that the original short message needs to be encrypted.

Optionally, the encryption condition may further include: the mobile terminal short message encryption control switch is turned on.

It can be understood that, when the SMS encryption control switch is set in the mobile terminal, the user can select to enable or disable the SMS encryption control switch to implement whether the mobile terminal uses the privacy information encryption function in the short message.

Optionally, after the mobile terminal bottom layer encrypts the private information in the original short message to generate an encrypted short message, the short message encryption flag bit may be set at the same time and the short message encryption flag bit is sent to the short message application of the mobile terminal; for example, When the SMS encryption flag is set to '1', the original SMS has been encrypted. When the SMS encryption flag is set to '0', the original SMS is not encrypted.

It can be noted that when the original short message does not satisfy the encryption condition, the mobile terminal bottom layer can send the original short message to the short message application of the mobile terminal.

Illustratively, when the private information to be encrypted in the short message is digital information, after the mobile terminal short message encryption control switch is turned on, it can be determined whether the digital information in the original short message needs to be encrypted; when the original short message contains digital information length greater than When the length is equal to the length threshold, the digital information in the original short message may be encrypted to generate an encrypted short message, and the mobile terminal may send the encrypted short message; when the length of the digital information included in the original short message is less than a length threshold, The original message can be sent by the bottom layer of the mobile terminal.

Here, the length threshold of the above digital information can be set by the user. When the length of the digital information in the original short message is less than the length threshold, the private information may not be a number that the user needs to keep secret. For example, the number of digits less than 4 digits is generally the date, time, amount of money, number of people, and the like. The digital information that the user needs to protect can be long, such as the ID number, the mobile phone number, the bank card number, etc., and the password information important to the user, such as the bank card password, the terminal application login password, the payment password, etc., has the shortest length when set. limit. Therefore, the mobile terminal can selectively encrypt the received digital short message and improve the information encryption protection efficiency in the short message.

Step 102: After receiving the encrypted short message, the short message application of the mobile terminal decrypts the encrypted short message.

It can be understood that the short message application of the mobile terminal can also determine whether the currently received short message is an encrypted short message before displaying the currently received short message.

Optionally, it is determined whether the short message encryption flag is 1, and if yes, it may continue to determine that the currently received short message is the encrypted short message, and the short message application of the mobile terminal may decrypt the encrypted short message and display the decrypted short message text. If not, the short message application of the mobile terminal can directly display the original short message.

Optionally, after receiving the encrypted short message, the short message application of the mobile terminal may determine whether the short message encryption flag is 1, and if yes, determine that the currently received short message is the encrypted short message, and then the decrypted message may be decrypted. Encrypt the short message and display the decrypted short message text; if not, it can be determined that the currently received short message is an unencrypted original short message, and then the original short message can be directly displayed.

Optionally, if the selected encryption and decryption algorithm does not change the length of the encrypted content or does not change the specified string identifier, it may be determined whether the currently received short message is an encrypted short message by determining whether the currently received short message satisfies the encryption condition.

Here, the mobile terminal may further save the currently received short message to the mobile terminal short message database, and the currently received short message may include the encrypted short message, and may also include the original short message.

It can be understood that, after encrypting the original short message, in addition to the short message application of the mobile terminal, the short message text obtained by other third party applications is the encrypted short message. When other third-party applications monitor the mobile terminal short message database to steal the short message content, only the encrypted short message or the original short message that does not need to be encrypted can be obtained; thus, the third party application cannot obtain the real short message content, thereby realizing the user. Protection of mobile terminal information.

Optionally, the mobile terminal may also preset a third-party application list, where the third-party application list includes a trusted third-party application in the mobile terminal specified by the user, so that the trusted third-party application can extract the private information in the short message. After receiving the original short message, the mobile terminal may send the original short message to a third-party application in the preset third-party application list.

Illustratively, many third-party applications play an increasingly important role in electronic transactions such as daily payments, transfers, etc. These highly secure third-party applications are greatly trusted by users. When the third-party applications trusted by these users are used, it is sometimes necessary to extract the digital verification information in the short message received by the mobile terminal to complete the operation, and therefore, in order to facilitate the third-party application trusted by the user. Reading the correct digital verification information in the short message can allow the third-party application trusted by the user to directly obtain the original short message, and automatically extract the correct digital verification information, which is convenient for the user to use.

The following uses the mobile terminal as a mobile phone as an example to describe the encryption and decryption of digital information in the mobile phone in detail. 2 is a flow chart of another method for encrypting and decrypting information in a short message, and the method may include:

Step 200: A new short message is received at the bottom of the mobile phone.

Step 201: Determine whether the SMS encryption control switch is enabled. If yes, go to step 202; if no, go to step 204.

Here, if the SMS encryption control switch is not enabled, the bottom layer of the mobile phone can directly send the received new SMS to the SMS application of the mobile phone.

Step 202: Determine whether the length of the digit in the new short message is greater than or equal to the length threshold. If yes, go to step 203; if no, go to step 204.

In the embodiment of the present disclosure, the bottom layer of the mobile phone may sequentially detect the received new short message text from the start character to the end character, and record the length of the digital string of the detected continuous digital information. Among them, when there are common space symbols such as spaces, commas, commas, and connectors "-" in the numeric string, it can be considered that the user inputs the data in order to facilitate accurate reading or recording. Therefore, the numeric string can be excluded. The calculation of the length.

For example, if a numeric string in a new short message is "123456789", then the numeric string length is 9; a numeric string in the new short message is "123-456-789", then the numeric string length is also 9 .

Step 203: Encrypt the digital information in the new short message, generate an encrypted short message, and add the short message. The secret flag is set to 1, and the encrypted SMS and SMS encryption flag are sent to the SMS application of the mobile phone.

In the embodiment of the present disclosure, if the length of at least one string of digital information in the new short message is greater than or equal to the length threshold, the original short message may be encrypted. Here, there may be at least two strings of digital information separated by Chinese characters or other characters in a short message.

Optionally, when the bottom layer of the mobile phone encrypts the digital information in the new short message, the first few digits of the commonly used digital information that needs to be encrypted may be regular or public, such as a mobile phone number, a bank card number, an ID card number, Therefore, when encrypting digital information, the middle bit can be used as the starting encryption bit, and the initial encryption bit is encrypted to the end of the digital information. For example, the first 6 digits of the 19-digit bank card number indicate the card issuing bank information, 7th to 10th. The bit indicates the card issue area, so the last 13 bits can be encrypted or the last 9 bits can be encrypted.

Here, the encryption algorithm for encrypting digital information can adopt a classical encryption algorithm, for example, Data Encryption Standard (DES), International Data Encryption Algorithm (IDEA), and public key encryption algorithm (Ron). Rivest, Adi Shamir, Leonard Adleman, RSA), etc.

Some simple encryption algorithms may also be used. For example, a key number is preset by the mobile phone, and the key number to be encrypted in the digital information is added to the key number to modulo 10 to generate encrypted digital information. For example, the original digital information received in the new short message is 123456789, the initial encryption bit set by the mobile phone is 5, the key number is 3, the 5th digit of the digital information is 5 plus 3 equals 8, and the result of 10 is modulo 8. After encrypting the sixth, seventh, and eighth bits according to the same encryption algorithm, the obtained encrypted digital information is 123489012.

In another embodiment, a multi-bit key number may also be set, for example, three key numbers 356 are set, and the fifth digit 5 of the digital information uses the first key number 3, and the sixth digit 6 uses the first Two key numbers 5, the 7th number 7 uses the 3rd key number 6. If the number of key digits is less than the length of the digital information to be encrypted, then after using all the key digits, the first key digit can be reused for the next digit to be encrypted, such as the 8th digit 8 reused One key number 3, the ninth number 9 continues to use the second key number 5, and the resulting encrypted digital information is 123481314.

It can be seen that when the above simple encryption algorithm is used, after the digital information is encrypted, the displayed digital information is still a number, avoiding the third party application or other people knowing the obtained digital letter. The information is encrypted information.

Step 204: The short message application of the mobile phone receives the current short message.

Step 205: Determine whether the short message encryption flag is 1, if yes, go to step 206; if no, go to step 207.

Here, after receiving the current short message, the short message application of the mobile phone can determine whether the encrypted flag bit is 1. If it is 1, it indicates that the current SMS is an encrypted SMS. If it is 0, the current SMS is the original SMS.

Step 206: Decrypt the digital information in the current short message.

Here, the short message application of the mobile phone can decrypt the received encrypted short message, and the decryption algorithm can correspond to the encryption algorithm used by the underlying mobile phone.

For example, the bottom layer of the mobile phone uses the DES encryption algorithm, and the preset short message application uses the corresponding DES decryption algorithm to decrypt the encrypted short message.

If the bottom layer of the mobile phone adopts the simple encryption algorithm in step 203, that is, the key number is 3, and the initial encryption bit is 5. When the encrypted digital information received by the short message application of the mobile phone is 123489012, the opposite operation may be performed on each encrypted digital information from the 5th bit, that is, the number directly greater than or equal to 3 is directly reduced by 3, and for the number less than 3, Add 10 and then subtract 3, and the original digital information 123456789 can be displayed after decryption.

Step 207: Display the current short message.

In this step, the mobile phone can display the original received text message, or can display the decrypted encrypted text message.

The following uses the mobile terminal as a mobile phone as an example to describe the encryption and decryption of the personal mailbox in the mobile phone short message. FIG. 3 is a flowchart of still another method for encrypting and decrypting information in a short message, and the method may include:

Step 300: A new short message is received at the bottom of the mobile phone.

Step 301: Determine whether the SMS encryption control switch is enabled. If yes, go to step 302; if no, go to step 304.

Step 302: Determine whether the new short message includes a character string that satisfies the set condition. If yes, go to step 303; if no, go to step 304.

In the embodiment of the present disclosure, the commonly used email address may be composed of three parts, the first part, the user account; the second part, the separator @; the third part, the mail receiving server domain name of the user mailbox, used to identify the mail receiving server where the mail receiving server is located position. When the privacy information is an email address, the special string identifier can be @plus the mail receiving server domain name of the user mailbox. For example, @sina.com, @163.com, @gmail.com, @hotmail.com, etc.

Step 303: Encrypt the mailbox information in the new short message, generate an encrypted short message, and send the encrypted short message to the short message application of the mobile phone.

Illustratively, if it is detected that @163.com is included in the new short message, at least 4 characters immediately preceding @ can be encrypted, for example, the American Standard Code for Information Exchange for each character in the content to be encrypted (American Standard Code for Information Interchange (ASCII) plus 2 is displayed again. For example, the hexadecimal ASCII code corresponding to the character 'b' is '62', and the character corresponding to the hexadecimal ASCII code '64' after adding 2 is 'd'. Here, the bigbang@163.com is encrypted as bigdcpi@163.com, and can send encrypted text messages to the mobile phone's SMS application.

Step 304: The short message application of the mobile phone receives the current short message.

Step 305: Determine whether the SMS encryption control switch is enabled. If yes, go to step 306; if no, go to step 308.

Step 306: Determine whether the current short message contains a character string that satisfies the set condition. If yes, go to step 307; if no, go to step 308.

In the embodiment of the present disclosure, after the mailbox is encrypted, the string identifier '@163.com' of the setting condition may not be changed. Therefore, the current short message may be determined by detecting whether the current short message includes the string identifier '@163.com'. Whether it is encrypted SMS.

Step 307: Decrypt the mailbox information in the current short message.

Here, the encryption algorithm and the decryption algorithm respectively used in the SMS application of the mobile phone bottom layer and the mobile phone may be agreed in advance, and the encrypted short message may be decrypted by using the decryption algorithm after the encrypted short message received by the mobile phone short message application.

In this step, when the mobile phone short message application receives the current short message, the first four characters immediately adjacent to @ can be decrypted, and the ASCII code of each character in the content to be decrypted is subtracted by 2, and the correct character information is obtained.

Step 308: Display the current short message.

The embodiment of the present disclosure further provides an apparatus for encrypting and decrypting information in a short message. 4 is a schematic structural diagram of a device for encrypting and decrypting information in a short message. As shown in FIG. 4, the device may include a bottom layer 400 of the mobile terminal and a short message application 401 of the mobile terminal;

The mobile terminal bottom layer 400 is configured to: receive at least one original short message including private information; and when the original short message satisfies an encryption condition, encrypt the private information in the original short message to generate an encrypted short message to the mobile The short message application of the terminal sends the encrypted short message.

The short message application 401 of the mobile terminal is configured to: after receiving the encrypted short message, decrypt the encrypted short message.

The privacy information may include at least one of the following: digital combination information, and character combination information that is not all numbers.

When the private information includes the digital combination information, the encryption condition may include that the length of the digital combination information included in the original short message is greater than or equal to a length threshold;

When the private information includes character combination information that is not all digits, the encryption condition may include that the original short message includes a character string that satisfies the setting condition.

The encryption condition may further include: the mobile terminal short message encryption control switch is turned on.

The bottom layer 400 of the mobile terminal may be further configured to: send the original short message to a third-party application in a preset third-party application list.

The preset third-party application list may include: a trusted third-party application in the mobile terminal specified by the user.

Embodiments of the present disclosure also provide a computer readable storage medium storing a computer executable And a method of implementing encryption and decryption of information in the short message when the computer executable instruction is executed.

Those skilled in the art will appreciate that embodiments of the present disclosure can be provided as a method, system, or computer program product. Thus, embodiments of the present disclosure may take the form of a hardware embodiment, a software embodiment, or a combination of software and hardware aspects. Moreover, embodiments of the present disclosure may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.

The present disclosure may be described with reference to flowchart illustrations, or block diagrams, or flowcharts and block diagrams of methods, devices (systems), and computer program products according to embodiments of the present disclosure. It will be understood that each flow in the flowcharts, or each block in the block diagram, or each of the flowcharts and block diagrams, and combinations of Combination of, or a combination of the flow in the flowchart and the blocks in the block diagram. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more flows of the flowchart, or a block or blocks of the block diagram, or at least one block of the flowchart and at least one block of the block diagram.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more flows of the flowchart, or a block or blocks of the block diagram, or at least one block of the flowchart and at least one block of the block diagram.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more flows of the flowchart, or a block or blocks of the block diagram, or at least one block of the flowchart and at least one block of the block diagram.

Those of ordinary skill in the art will appreciate that all or some of the steps, systems, and functional blocks/units of the methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description It does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed cooperatively by several physical components. Some or all of the components may be implemented as software executed by a processor, such as a digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on a computer readable medium, which may include computer storage media (or non-transitory media) and communication media (or transitory media). As is well known to those of ordinary skill in the art, the term computer storage medium includes volatile and nonvolatile, implemented in any method or technology for storing information, such as computer readable instructions, data structures, program modules or other data. Sex, removable and non-removable media. Computer storage media include, but are not limited to, Random Access Memory (RAM), Read-Only Memory (ROM), and Electrically Erasable Programmable Read-only Memory (EEPROM). Flash memory or other memory technology, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical disc storage, magnetic cassette, magnetic tape, disk storage or other magnetic storage device, or Any other medium used to store the desired information and that can be accessed by the computer. Moreover, it is well known to those skilled in the art that communication media typically includes computer readable instructions, data structures, program modules, or other data in a modulated data signal, such as a carrier wave or other transport mechanism, and can include any information delivery media. .

A person skilled in the art can understand that the technical solutions of the present disclosure may be modified or equivalent, without departing from the spirit and scope of the present disclosure, and should be included in the scope of the claims of the present disclosure.

Industrial applicability

Claims

A method for encrypting and decrypting information in a short message, the method comprising:

The bottom layer of the mobile terminal receives at least one original short message containing private information;

When the original short message satisfies the encryption condition, the mobile terminal bottom layer encrypts the private information in the original short message to generate an encrypted short message, and sends the encrypted short message to the short message application of the mobile terminal;

After receiving the encrypted short message, the short message application of the mobile terminal decrypts the encrypted short message.
The method of claim 1, wherein the privacy information comprises at least one of the following: digital combination information, and character combination information that is not all numbers.
The method according to claim 2, wherein, when the private information comprises digital combination information, the encryption condition comprises that the length of the digital combination information included in the original short message is greater than or equal to a length threshold;

When the private information includes character combination information that is not all digits, the encryption condition includes that the original short message includes a character string that satisfies the setting condition.
The method according to claim 1, wherein the encryption condition further comprises: the mobile terminal short message encryption control switch is turned on.
The method according to claim 1, further comprising: the mobile terminal bottom layer transmitting the original short message to a third party application in a preset third party application list.
The method according to claim 5, wherein the preset third-party application list comprises: a third-party application trusted by the user in the mobile terminal.
A device for encrypting and decrypting information in a short message, the device comprising a bottom message of a mobile terminal and a short message application of the mobile terminal; wherein

The bottom layer of the mobile terminal is configured to: receive at least one original short message including the private information; and when the original short message satisfies the encryption condition, encrypt the private information in the original short message to generate an encrypted short message, to the mobile terminal The short message application sends the encrypted short message;

The short message application of the mobile terminal is set to: after receiving the encrypted short message, the encryption SMS to decrypt.
The apparatus according to claim 7, wherein the privacy information comprises at least one of the following: digital combination information, and character combination information that is not all numbers.
The device according to claim 8, wherein, when the private information comprises digital combination information, the encryption condition comprises that the length of the digital combination information included in the original short message is greater than or equal to a length threshold;

When the private information includes character combination information that is not all digits, the encryption condition includes that the original short message includes a character string that satisfies the setting condition.
The apparatus according to claim 7, wherein the encryption condition further comprises: the mobile terminal short message encryption control switch is turned on.
The device of claim 7, the bottom layer of the mobile terminal is further configured to: send the original short message to a third-party application in a preset third-party application list.
The apparatus according to claim 11, wherein the preset third-party application list comprises: a third-party application trusted by the user in the mobile terminal.
A computer readable storage medium storing computer executable instructions that, when executed, implement a method of encrypting and decrypting information in a short message as claimed in any one of claims 1 to 6.