CN117155601B - Calling method, device, electronic device and storage medium - Google Patents

Abstract

The present disclosure proposes a calling method, device, electronic device and storage medium, which relates to the field of communication security technology. The method includes: obtaining calling user information, and generating a call flash message based on the calling user information; in response to identifying a V call request based on the call flash message, generating a first public key, a first private key, a second public key and a second private key, and randomly dividing the call flash message into a preset number of flash message texts; performing a first encryption on the flash message text by homomorphic encryption to generate a flash message ciphertext; performing a second encryption on the flash message ciphertext based on the first public key to generate a signature text segment, and sending the signature text segment, the flash message ciphertext, the first private key, the second public key and the second private key to a cloud server through a V call. By dividing the flash message into multiple flash message texts for encrypted transmission, the complexity of encryption can be increased. At the same time, this method of using encrypted transmission and digital signature verification can improve the confidentiality of flash message transmission.

Description

Calling method, device, electronic device and storage medium

Technical Field

The present disclosure relates to the field of communication security technology, and in particular to a calling method, device, electronic device and storage medium.

Background technique

With the popularization of mobile terminals and the development of Internet technology, various advertisements, intermediary calls and fraudulent calls are increasingly interfering with users' lives. The commonly used technology at present is the caller ID function provided by operators, but it cannot identify unfamiliar calls. Secondly, although some operators will provide users with called or calling information, the display content and pop-up/display duration of such information are not smart enough. In addition, since a large amount of user privacy information exists in the prompted information, the security of such information during transmission is also one of the issues that cannot be ignored.

Summary of the invention

The present disclosure aims to solve one of the technical problems in the related art at least to some extent.

To this end, an object of the present disclosure is to provide a calling method, which is applied to a calling client.

The second objective of the present disclosure is to provide a calling method applied to a cloud server.

The third object of the present disclosure is to provide a calling method, which is applied to a called client.

The fourth objective of the present disclosure is to provide a calling device, which is applied to a calling client.

The fifth objective of the present disclosure is to provide a calling device for application in a cloud server.

The sixth objective of the present disclosure is to provide a calling device, which is applied to a called client.

A seventh objective of the present disclosure is to provide an electronic device.

An eighth object of the present disclosure is to provide a non-transitory computer-readable storage medium.

A ninth objective of the present disclosure is to provide a computer program product.

To achieve the above-mentioned purpose, the first aspect of the present disclosure proposes a calling method, which is applied to a calling client, including: obtaining calling user information and generating a call flash message based on the calling user information; in response to identifying a request for a V call based on the call flash message, generating a first public key, a first private key, a second public key and a second private key, and randomly dividing the call flash message into a preset number of flash message text segments; performing a first encryption on the flash message text by homomorphic encryption to generate a flash message ciphertext; performing a second encryption on the flash message ciphertext based on the first public key to generate a signature text segment, and sending the signature text segment, the flash message ciphertext, the first private key, the second public key and the second private key to a cloud server via a V call.

According to one embodiment of the present disclosure, generating the first public key and the first private key includes: randomly obtaining two different first prime numbers and second prime numbers, and randomly obtaining two mutually prime first and second mutually prime numbers, and obtaining a random matrix of random length; constructing the first public key based on the first prime number, the second prime number, the first mutually prime number, the second mutually prime number, the random length and the random matrix; and constructing the first private key based on the first prime number.

According to one embodiment of the present disclosure, the forming of the first public key based on the first prime number, the second prime number, the first coprime number, the second coprime number, the random length and the random matrix includes: generating a first element based on the second coprime number and the second prime number, and taking the product of the first prime number and the second prime number as the second element; forming the first public key based on the first element, the second element, the random length, the random matrix and the first coprime number.

According to one embodiment of the present disclosure, the flash message text is first encrypted by homomorphic encryption to generate flash message ciphertext, including: assigning a first confidential parameter to all flash message texts respectively, wherein the first confidential parameter is a random positive integer; for any flash message text, based on the first prime number and the first confidential parameter corresponding to the flash message text, determining the second confidential parameter of the flash message text; and encrypting the flash message text based on the first confidential parameter and the second confidential parameter to generate the flash message ciphertext.

According to one embodiment of the present disclosure, determining the second confidential parameter of the flash message text based on the first prime number and the first confidential parameter corresponding to the flash message text includes: dividing the remainder of 1 and the first prime number by the sum of all the first confidential parameters, and taking the quotient as the second confidential parameter of the flash message text.

According to one embodiment of the present disclosure, encrypting the flash message text based on the first confidential parameter and the second confidential parameter includes: encrypting the flash message text based on the first element, the first coprime number, the first confidential parameter, and the second confidential parameter.

According to one embodiment of the present disclosure, the second encryption of the flash message ciphertext based on the first public key to generate a signature text segment includes: for any flash message ciphertext, assigning a timestamp to the flash message ciphertext; generating a signature text segment based on the timestamp, the first public key and the flash message ciphertext.

According to one embodiment of the present disclosure, generating a signature text segment based on the timestamp, the first public key and the flash message ciphertext includes: performing a hash operation on the timestamp and the flash message ciphertext, and multiplying the operation result with the first public key to generate the signature text segment.

According to one embodiment of the present disclosure, generating the second public key and the second private key includes: randomly obtaining two different third prime numbers and fourth prime numbers, and randomly obtaining two third coprime numbers and fourth coprime numbers that are mutually prime, and obtaining a random matrix of random length; constructing the second public key based on the third prime number, the fourth prime number, the third coprime number, the fourth coprime number, the random length and the random matrix; and constructing the second private key based on the third prime number.

According to an embodiment of the present disclosure, the acquiring of the calling user information further includes: detecting whether the calling user has been registered; and in response to detecting the registration information, determining the calling user information based on the registration information.

According to an embodiment of the present disclosure, the method further includes: in response to failure to detect registration information, generating prompt information, wherein the prompt information is used to remind the calling user to register.

To achieve the above-mentioned purpose, the second aspect of the present disclosure proposes a calling method, which is applied to a cloud server, including: detecting a V-call sent by a calling client, obtaining a signature text segment, a flash message ciphertext, a first private key, a second public key, and a second private key in the V-call; performing signature authentication on the signature text segment based on the first private key and the flash message ciphertext; rearranging the flash message ciphertext based on the authentication result to obtain a target flash message ciphertext; encrypting the target flash message ciphertext based on the second public key to generate a flash message full-text signature, and sending the flash message full-text signature, the second private key, and the target flash message ciphertext to the called client.

According to one embodiment of the present disclosure, the signature authentication of the signature text segment based on the first private key and the flash message ciphertext includes: decoding the flash message ciphertext based on the first private key to obtain a decoded text segment; matching the decoded text segment with the corresponding signature text segment, that is, performing signature authentication.

According to one embodiment of the present disclosure, decoding the flash message ciphertext based on the first private key to obtain a decoded text segment includes: obtaining the timestamp of the flash message ciphertext; performing a hash operation on the timestamp and the flash message ciphertext, and multiplying the operation result with the first private key to obtain the decoded text segment.

According to one embodiment of the present disclosure, the flash message ciphertext is rearranged based on the authentication result to obtain the target flash message ciphertext, including: the candidate flash message ciphertext corresponding to the signature text segment whose authentication result is verified is arranged and combined in the order of the timestamps to generate the target flash message ciphertext.

According to one embodiment of the present disclosure, the candidate flash message ciphertexts corresponding to the signature text segment with the authentication result of passed verification are arranged and combined in the order of the timestamps, including: judging whether the current communication network environment is safe; in response to the current communication network environment being safe, the candidate flash message ciphertexts are arranged and combined in the order of the timestamps based on a first combination method; in response to the current communication network environment being unsafe, the candidate flash message ciphertexts are arranged and combined in the order of the timestamps based on a second combination method.

To achieve the above-mentioned purpose, the third aspect of the present disclosure proposes a calling method, which is applied to the called client, including: detecting a V-call sent by the calling cloud server, obtaining the full-text signature of the flash message, the second private key and the target flash message ciphertext in the V-call; performing signature authentication on the target flash message ciphertext based on the second private key and the full-text signature of the flash message; in response to the signature authentication being passed, decrypting the target flash message ciphertext to generate a flash message, and displaying the flash message.

According to one embodiment of the present disclosure, the signature authentication of the target flash message ciphertext based on the second private key and the full-text signature of the flash message includes: decoding the target flash message ciphertext based on the second private key to obtain the target flash message ciphertext signature; matching the target flash message ciphertext signature with the full-text signature of the flash message, i.e., performing signature authentication.

According to an embodiment of the present disclosure, the method further includes: obtaining an operation instruction generated by the user based on the flash message; generating feedback information based on the operation instruction, and sending it to the cloud server.

To achieve the above-mentioned purpose, the fourth aspect embodiment of the present disclosure proposes a calling device, which is applied to a calling client, including: an acquisition module, which is used to acquire calling user information and generate a call flash message based on the calling user information; a division module, which is used to generate a first public key, a first private key, a second public key and a second private key in response to identifying a request for a V call based on the call flash message, and randomly divide the call flash message into a preset number of flash message texts; a first encryption module, which is used to perform a first encryption on the flash message text through a homomorphic encryption method to generate a flash message ciphertext; a second encryption module, which is used to perform a second encryption on the flash message ciphertext based on the first public key to generate a signature text segment, and send the signature text segment, the flash message ciphertext, the first private key, the second public key and the second private key to the cloud server through a V call.

To achieve the above-mentioned purpose, the fifth aspect embodiment of the present disclosure proposes a calling device, which is applied to a cloud server, including: a detection module, which is used to detect a V-call sent by a calling client, and obtain a signature text segment, a flash message ciphertext, a first private key, a second public key, and a second private key in the V-call; an authentication module, which is used to perform signature authentication on the signature text segment based on the first private key and the flash message ciphertext; an arrangement module, which is used to rearrange the flash message ciphertext based on the authentication result to obtain a target flash message ciphertext; a sending module, which is used to encrypt the target flash message ciphertext based on the second public key to generate a full-text signature of the flash message, and send the full-text signature of the flash message, the second private key and the target flash message ciphertext to the called client.

To achieve the above-mentioned purpose, the sixth aspect embodiment of the present disclosure proposes a calling device, which is applied to the called client, including: a monitoring module, which is used to detect the V call sent by the calling cloud server, and obtain the full-text signature of the flash message, the second private key and the target flash message ciphertext in the V call; an identification module, which is used to perform signature authentication on the target flash message ciphertext based on the second private key and the full-text signature of the flash message; a display module, which is used to decrypt the target flash message ciphertext in response to the signature authentication being passed to generate a flash message, and display the flash message.

To achieve the above-mentioned purpose, the seventh aspect embodiment of the present disclosure proposes an electronic device, comprising: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to implement the calling method as described in the first aspect embodiment, the second aspect embodiment and the third aspect embodiment of the present disclosure.

To achieve the above-mentioned objectives, the fourth aspect embodiment of the present disclosure proposes a non-transitory computer-readable storage medium storing computer instructions, wherein the computer instructions are used to implement the calling method as described in the first aspect embodiment, the second aspect embodiment and the third aspect embodiment of the present disclosure.

To achieve the above-mentioned objectives, the fifth aspect embodiment of the present disclosure proposes a computer program product, including a computer program, which, when executed by a processor, is used to implement the calling method as described in the first aspect embodiment, the second aspect embodiment and the third aspect embodiment of the present disclosure.

By dividing the flash message into multiple flash message texts for encrypted transmission, the complexity of encryption can be increased. At the same time, this method of using encrypted transmission and digital signature verification can improve the confidentiality of flash message transmission.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of a calling method according to an embodiment of the present disclosure;

FIG2 is a schematic diagram of another calling method according to an embodiment of the present disclosure;

FIG3 is a schematic diagram of another calling method according to an embodiment of the present disclosure;

FIG4 is a schematic diagram of another calling method according to an embodiment of the present disclosure;

FIG5 is a schematic diagram of another calling method according to an embodiment of the present disclosure;

FIG6 is a schematic diagram of another calling method according to an embodiment of the present disclosure;

FIG7 is a schematic diagram of another calling method according to an embodiment of the present disclosure;

FIG8 is a schematic diagram of a calling device according to an embodiment of the present disclosure;

FIG9 is a schematic diagram of another calling device according to an embodiment of the present disclosure;

FIG10 is a schematic diagram of another calling device according to an embodiment of the present disclosure;

FIG. 11 is a schematic diagram of an electronic device according to an embodiment of the present disclosure.

Detailed ways

Embodiments of the present disclosure are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present disclosure, and should not be construed as limiting the present disclosure.

FIG. 1 is a schematic diagram of an exemplary implementation of a calling method proposed in the present disclosure, which is applied to a calling client. As shown in FIG. 1 , the calling method includes the following steps:

S101, obtaining calling user information, and generating a call flash message based on the calling user information.

The calling method of the embodiment of the present application can be applied to the scenario of calling an unfamiliar number. The executor of the call in the embodiment of the present application can be the calling device in the embodiment of the present application, and the calling device can be set on an electronic device.

In the disclosed embodiment, the user information may be stored in the storage space of the calling client, or may be manually input by the user, which is not limited herein.

It should be noted that Call Flash Message is a text messaging service, which means that the information sent to the user can be directly displayed on his or her mobile phone screen, and the information is not automatically saved after reading.

In the disclosed embodiment, the call flash message mainly refers to that before making a user call, the calling user will send a call flash message to the called user, so as to inform the called user of the request and information of the calling client in advance through the flash message, thereby improving the call success rate and user experience of the calling user and the called user.

After the real-name identity is verified, the calling client can dial the called client's phone number and pass the calling client's real-name call information to the called client, so that the called client can identify unfamiliar calls and know the calling client's identity information in advance. This allows users to have a basic prediction of some advertisements, intermediaries, fraud calls, etc., and reduce the interference of harassing calls on users' lives.

S102, in response to identifying a call request based on a call flash message, generating a first public key, a first private key, a second public key and a second private key, and randomly dividing the call flash message into a preset number of flash message text segments.

In the embodiment of the present disclosure, the calling user may make a V-add call request through a V-add call module. It should be noted that the V-add call module may be an application installed on the calling client.

In the disclosed embodiments, the public key and the private key are a key pair obtained through an encryption algorithm, that is, a public key and a private key, which is an asymmetric encryption method. The public key can encrypt the session and verify the digital signature. Only the corresponding private key can decrypt the session data, thereby ensuring the security of data transmission. The public key is the part of the key that is open to the public, and the private key is the non-public part, which is kept by the user.

In the embodiments of the present disclosure, there may be multiple methods for generating the first public key, the first private key, the second public key, and the second private key, which are not limited here and may be specifically set according to actual design requirements.

Optionally, the first public key, the first private key, the second public key and the second private key may be generated by a preset algorithm. The algorithm for generating the first public key and the first private key may be different from the algorithm for generating the second public key and the second private key, and no limitation is made here.

Optionally, a public key and private key generation model may be used to generate a first public key, a first private key, a second public key and a second private key. The public key and private key generation model may be trained in advance and stored in a storage space of an electronic device for easy retrieval when needed.

In the embodiment of the present disclosure, the preset number of segments can be changed according to actual design needs and is not limited here.

S103, performing a first encryption on the flash message text by homomorphic encryption to generate a flash message ciphertext.

It should be noted that homomorphic encryption is a cryptographic technology based on the computational complexity theory of mathematical problems. The data that has been homomorphically encrypted is processed to obtain an output, and the output is decrypted, and the result is the same as the output obtained by processing the unencrypted original data in the same way.

By encrypting the flash message ciphertext using homomorphic encryption, it can be ensured that the generated call flash message is not distorted when the final ciphertext is decrypted by the called client.

S104, perform a second encryption on the flash message ciphertext based on the first public key to generate a signature text segment, and send the signature text segment, the flash message ciphertext, the first private key, the second public key and the second private key to the cloud server via a V call.

In the disclosed embodiment, the signature text segment generated by the signature operation is used to subsequently verify whether the flash message ciphertext is damaged or maliciously modified during the transmission process.

There are many methods for performing the second encryption on the flash message ciphertext using the first public key, and no limitation is made here.

In the disclosed embodiment, the calling user information is first obtained, and a call flash message is generated based on the calling user information. In response to identifying a request for a V call based on the call flash message, a first public key, a first private key, a second public key, and a second private key are generated, and the call flash message is randomly divided into a preset number of flash message texts, and then the flash message text is first encrypted by homomorphic encryption to generate a flash message ciphertext, and finally the flash message ciphertext is second encrypted based on the first public key to generate a signature text segment, and the signature text segment, the flash message ciphertext, the first private key, the second public key, and the second private key are sent to the cloud server through the V call. By dividing the flash message into multiple flash message texts for encrypted transmission, the complexity of encryption can be increased, and at the same time, this method of using encrypted transmission and digital signature verification can improve the confidentiality of flash message transmission.

In one possible implementation, different flash messages may be generated according to the user level of the calling user.

Optionally, if the calling client is a VIP user and the called client is set to the emergency user list in the V dialing interface, after the request is sent, the call reminder displayed by the called client will remain on the mobile terminal page and will not automatically exit until the called client clicks to confirm.

Optionally, if the calling client is a VIP user and the called client is not added as an emergency user list in the V dialing interface, after the request is sent, the incoming call reminder displayed by the called client is retained for 5 minutes.

Optionally, if the calling client is not a VIP user and the called client is not added as an emergency user list in the V dialing interface, the incoming call reminder displayed by the called client when the request is sent will automatically exit after the request is completed.

It should be noted that obtaining the calling user information may also detect whether the calling user has been registered, and in response to detecting the registration information, determine the calling user information based on the registration information.

In response to not detecting the registration information, a prompt message is generated, where the prompt message is used to remind the calling user to register.

In the above embodiment, the first public key and the first private key are generated, which can be further explained by FIG. 2 . The method includes:

S201, randomly obtain two different first prime numbers and second prime numbers, and randomly obtain two mutually prime first and second mutually prime numbers, and obtain a random matrix of random length.

In the embodiment of the present disclosure, a random matrix of random length may be generated by bilinear mapping and bilinear pairing.

S202, constructing a first public key based on the first prime number, the second prime number, the first coprime number, the second coprime number, the random length and the random matrix.

In the embodiment of the present disclosure, a first element can be first generated based on a second coprime number and a second prime number, and the product of the first prime number and the second prime number can be used as the second element. Then, a first public key can be constructed based on the first element, the second element, a random length, a random matrix and the first coprime number.

S203, constructing a first private key based on the first prime number.

In a possible implementation, two large prime numbers, a first prime number _q1 and a second prime number _q2 , are selected to calculate the first element n= _q1.q2 ; and the second element h= _uq2 is calculated by bilinear mapping bilinear pairing e:(G*G) ^→ _G1 and two mutually prime random numbers g, u, where G is the random matrix length.

First public key is: (n,G,G ₁ ,e,g,h).

First private key is: q ₁ .

In the disclosed embodiment, firstly, two different first prime numbers and second prime numbers are randomly obtained, and two mutually prime first and second mutually prime numbers are randomly obtained, and a random matrix of random length is obtained, and then a first public key is formed based on the first prime number, the second prime number, the first mutually prime number, the second mutually prime number, the random length and the random matrix, and a first private key is formed based on the first prime number. Thus, by setting a plurality of random numbers, and then generating a first public key and a first private key, the randomness of the public key and the private key can be improved, and it is not easy to be copied and cracked.

In the above embodiment, the flash message text is first encrypted by homomorphic encryption to generate flash message ciphertext, which can be further explained by FIG. 3. The method includes:

S301, assigning a first confidential parameter to all flash message texts respectively, wherein the first confidential parameter is a random positive integer.

S302: For any flash message text, determine a second confidential parameter of the flash message text based on a first prime number and a first confidential parameter corresponding to the flash message text.

In the disclosed embodiment, the remainder obtained by dividing 1 by the first prime number can be divided by the sum of all first confidential parameters, and the quotient can be used as the second confidential parameter of the flash message text.

In one possible implementation, the flash message text is randomly divided into t segments, and a confidential parameter _si is added to each segment, where i∈[1,t], the first confidential parameter _si is a positive integer selected from a random number, and _q1 is the generated The prime number used when s ₀ is:

s ₀ ＝1 ₁ /(s ₁ + ₂ +…s _t )

S303, encrypting the flash message text based on the first confidential parameter and the second confidential parameter to generate a flash message ciphertext.

In the disclosed embodiment, the flash message text may be encrypted based on the first element, the first coprime number, the first confidential parameter, and the second confidential parameter.

It can be encrypted by the following formula:

Among them, _si is the first confidential parameter, _s0 is the second confidential parameter, r is a random number, h is the second element, mi is the i-th flash message ciphertext, t is the total number of ciphertext segments, and _ci is the i-th flash message ciphertext.

In the above embodiment, the flash message ciphertext is secondly encrypted based on the first public key to generate a signature text segment, which can be further explained by FIG. 4. The method includes:

S401, assigning a timestamp to any flash message ciphertext.

In the disclosed embodiment, different flash message ciphertexts correspond to different timestamps, which can be used to distinguish different flash message ciphertexts.

It should be noted that the timestamps are arranged in the logical order of the flash message ciphertexts, that is, in the order in which the flash message ciphertexts appear in the flash message text.

S402, generating a signature text segment based on the timestamp, the first public key and the flash message ciphertext.

In the disclosed embodiment, a signature text segment may be generated by performing a hash operation on the timestamp and the flash message ciphertext, and multiplying the operation result with the first public key.

In one possible implementation, each flash message ciphertext c _i is signed to obtain the signed text after the signature processing.

Among them, ci _is the ciphertext of the flash message text segment, is the public key, H function is the hash function using SHA-256, and _ti is the timestamp of the i-th flash message ciphertext.

In the above embodiment, the second public key and the second private key are generated, which can be further explained by FIG. 5 , and the method includes:

S501, randomly obtain two different third prime numbers and fourth prime numbers, and randomly obtain two mutually prime third coprime numbers and fourth coprime numbers, and obtain a random matrix of random length.

In the embodiment of the present disclosure, a random matrix of random length may be generated by bilinear mapping and bilinear pairing.

S502, constructing a second public key based on a third prime number, a fourth prime number, a third mutually prime number, a fourth mutually prime number, a random length, and a random matrix.

In the embodiment of the present disclosure, the third element can be first generated based on the fourth coprime number and the fourth prime number, and the product of the third prime number and the fourth prime number can be used as the fourth element, and then the second public key can be constructed based on the third element, the fourth element, the random length and the random matrix and the third coprime number.

S503, constructing a second private key based on the third prime number.

In a possible implementation, two large prime numbers, a third prime number _p1 and a fourth prime number _p2 , are selected to calculate the third element m= _p1.p2 ; and the fourth element l= _vp2 is calculated by bilinear mapping bilinear pairing f:(I*I) ^→ _I1 and two mutually prime random numbers k, v, where I is the random matrix length.

Second public key is: (m,I,I ₁ ,f,k,l).

Second private key Is: p ₁ .

FIG6 is a schematic diagram of an exemplary implementation of a calling method proposed in the present disclosure, which is applied to a cloud server. As shown in FIG6 , the calling method includes the following steps:

S601, detecting a V call sent by a calling client, and obtaining a signature text segment, a flash message ciphertext, a first private key, a second public key and a second private key in the V call.

It should be noted that the generation process of the signature text segment, the flash message ciphertext, the first private key, the second public key and the second private key can refer to the contents in the above embodiments and will not be repeated here.

S602, perform signature authentication on the signature text segment based on the first private key and the flash message ciphertext.

In the disclosed embodiment, the flash message ciphertext may first be decoded based on the first private key to obtain a decoded text segment, and then the decoded text segment may be matched with the corresponding signature text segment, ie, signature authentication may be performed.

It should be noted that, to decode the flash message ciphertext based on the first private key to obtain the decoded text segment, the timestamp of the flash message ciphertext can be first obtained, and then a hash operation is performed on the timestamp and the flash message ciphertext, and the operation result is multiplied by the first private key to obtain the decoded text segment.

In a possible implementation method, the flash message ciphertext c _i and the first private key and the signature text segment Verify the digital signature. Use the SHA-256 hash function H and the timestamp to calculate the digital signature:

In one possible implementation, after receiving multiple flash message text segment ciphertexts, the cloud server will maintain a multi-column list SMinfo for each flash message text segment ciphertext, which is used to record the signature authentication result of each flash message text segment.

The flash message text segment ciphertext maintains a multi-column list including the first private key, flash message ciphertext, signature text segment and flag FLAG, where the flag is the signature authentication result.

S603, rearrange the flash message ciphertext based on the authentication result to obtain the target flash message ciphertext.

In the disclosed embodiment, the candidate flash message ciphertexts corresponding to the signature text segments with the authentication results of passed verification are arranged and combined in the order of timestamps to generate the target flash message ciphertext.

S604: Encrypt the target flash message ciphertext based on the second public key to generate a flash message full text signature, and send the flash message full text signature, the second private key and the target flash message ciphertext to the called client.

In the disclosed embodiment, a V call sent by the calling client is detected, and the signature text segment, flash message ciphertext, first private key, second public key and second private key in the V call are obtained, and then the signature text segment is signed and authenticated based on the first private key and the flash message ciphertext, and then the flash message ciphertext is rearranged based on the verification result to obtain the target flash message ciphertext, and finally the target flash message ciphertext is encrypted based on the second public key to generate the full text signature of the flash message, and the full text signature of the flash message, the second private key and the target flash message ciphertext are sent to the called client. Thus, the signature text segment is signed and authenticated by the first private key and the flash message ciphertext, and the verification result can be used to determine whether the flash message ciphertext has been lost or tampered with during the transmission process, thereby ensuring the security and integrity of the flash message ciphertext transmission.

It should be noted that the candidate flash message ciphertexts corresponding to the signature text segments with authentication results being verified are arranged and combined in the order of timestamps, and network security needs to be considered.

In the embodiment of the present disclosure, it can be first determined whether the current communication network environment is safe. In response to the current communication network environment being safe, the candidate flash message ciphertexts are arranged and combined in the order of timestamps based on a first combination method. In response to the current communication network environment being unsafe, the candidate flash message ciphertexts are arranged and combined in the order of timestamps based on a second combination method.

In one possible implementation, when the network is secure, the following formula is used for permutation and combination:

When the network is insecure, use the following formula for permutation and combination:

Among them, t is the network security time, _tb is the network insecurity time, _ci is the flash message ciphertext, _Ccn is the target flash message ciphertext.

Considering t≈t _b , in the embodiment of the present disclosure,

Take the common divisor of g and h, then:

From formula (1), we can know that:

Therefore, the ciphertext C _cn of the full text of the flash message can be calculated:

FIG. 7 is a schematic diagram of an exemplary implementation of a calling method proposed in the present disclosure, which is applied to a called client. As shown in FIG. 7 , the calling method includes the following steps:

S701, detecting a V call sent by the calling cloud server, and obtaining the full text signature, the second private key and the target flash message ciphertext in the V call.

It should be noted that the generation process of the flash message full-text signature, the second private key and the target flash message ciphertext can refer to the contents in the above embodiment and will not be repeated here.

S702, perform signature authentication on the target flash message ciphertext based on the second private key and the full-text signature of the flash message.

In the disclosed embodiment, the target flash message ciphertext may be first decoded based on the second private key to obtain the target flash message ciphertext signature, and then the target flash message ciphertext signature may be matched with the flash message full text signature, i.e., signature authentication may be performed.

In the disclosed embodiment, after receiving the full text signature σ _cn of the flash message and the corresponding target flash message ciphertext C _cn , the called client verifies the full text signature C _cn of the flash message.

According to the full text signature of the flash message σ _cc , the target flash message ciphertext C _cn , and the second private key Verify the signature value, H function is the hash function using SHA-256, _ti is the timestamp:

Then compare σ _cc and σ _cn .

S703, in response to the signature authentication being passed, decrypting the target flash message ciphertext to generate a flash message, and displaying the flash message.

If σ _cc = σ _cn , the signature authentication is successful; otherwise, the authentication fails, the signature is rejected, and the target flash message ciphertext is discarded.

In the disclosed embodiment, a V call sent by the calling cloud server is detected, the full text signature of the flash message, the second private key and the target flash message ciphertext in the V call are obtained, and then the target flash message ciphertext is signed and authenticated based on the second private key and the full text signature of the flash message. In response to the signature authentication passing, the target flash message ciphertext is decrypted to generate a flash message, and the flash message is displayed. Thus, the signature authentication of the target flash message ciphertext based on the second private key and the full text signature of the flash message can prevent the cloud server from losing or being tampered with the data packet in the process of sending it to the called client, and ensure the integrity and authenticity of the flash message received by the called client.

In one possible implementation, the flash message placed by the called party can be displayed on the screen. By adopting the prompt method of the flash message on the screen, the called client clicks confirmation or the prompt retention time expires before the prompt ends. The prompt intensity is high, thereby preventing the user from missing important calls.

In the disclosed embodiment, after the flash message is displayed, the operation instruction generated by the user based on the flash message can also be obtained, and then feedback information is generated based on the operation instruction and sent to the cloud server.

It should be noted that the feedback information may include whether the called client is willing to accept the call request of the calling client. The calling client may determine whether to continue the call according to the feedback information.

In the embodiment of the present disclosure, the target flash message ciphertext can be decrypted by the following formula to generate a flash message:

Get the full text of the flash message through discrete logarithm:

In a possible implementation, after the called client receives the real-name flash message, the mobile terminal matches the flash message information with its own information to determine the matching level.

First, the matching can be performed based on the phone number and name. After the phone number and name are determined, the matching result will be returned to the calling client in the form of a flash message. After completing step 1, the matching is performed based on the geographic location information. If they are in the same city, the matching result will be returned to the calling client in the form of a flash message. If they are not in the same city, they will be confirmed based on the common contacts in the address book above. If there is a common contact, it is determined that they know each other, and the matching result will be fed back to the calling client. 3) You can also use user trajectory information. If the two people's trajectories overlap, and the overlapping time interval is short and the number of overlaps is large, then it can be determined that they may know each other. Feedback the matching result to the calling client. After the calling client and the called client view the content of the flash message, they will determine whether to continue to dial or answer the call based on the matching result prompt. (1. Prompt whether to attend the same meeting, participate in the same event, and arrive at the same place; 2. Prompt common friends in the address book; 3. Prompt the number of times you have called; 4. Prompt the purpose of calling this phone.) If the called client agrees to answer, click the confirm or cancel button in the flash message to talk to the calling client. After the called client answers the call, it receives another real-name flash message (the difference from the first flash message is that the first one only has real-name information, while the second one is a flash message business card edited by itself). The called client can check and save the identity information of the calling client at any time based on the flash message.

Further, after the call is finished, the called client receives a flash message containing the real name information of the calling client. If the called client does not answer the call, the flash message and the flash message containing the real name information of the calling client may also be received.

The called client can add the calling client as a friend based on the saved real-name information, and at the same time, feedback another message to the calling client, including the identity information of the called client and the confirmation receipt of the called client adding A as a friend. Moreover, in the subsequent friend relationship, the intimacy and level of the friend relationship can be determined by the call duration and frequency.

Corresponding to the calling methods provided in the above-mentioned embodiments, an embodiment of the present disclosure also provides a calling device. Since the calling device provided in the embodiment of the present disclosure corresponds to the calling methods provided in the above-mentioned embodiments, the implementation methods of the above-mentioned calling methods are also applicable to the calling device provided in the embodiment of the present disclosure and will not be described in detail in the following embodiments.

FIG8 is a schematic diagram of a calling device proposed in the present disclosure, which is applied to a calling client. As shown in FIG8 , the calling device 800 includes: an acquisition module 810 , a division module 820 , a first encryption module 830 and a second encryption module 840 .

The acquisition module 810 is used to acquire the calling user information and generate a call flash message based on the calling user information.

The division module 820 is used to generate a first public key, a first private key, a second public key and a second private key in response to identifying a call request based on a call flash message, and randomly divide the call flash message into a preset number of flash message texts.

The first encryption module 830 is used to perform a first encryption on the flash message text by homomorphic encryption to generate a flash message ciphertext.

The second encryption module 840 is used to perform a second encryption on the flash message ciphertext based on the first public key to generate a signature text segment, and send the signature text segment, the flash message ciphertext, the first private key, the second public key and the second private key to the cloud server via a V call.

In one embodiment of the present disclosure, the partitioning module 820 is further used to: randomly obtain two different first prime numbers and second prime numbers, and randomly obtain two mutually prime first and second mutually prime numbers, and obtain a random matrix of random length; based on the first prime number, the second prime number, the first mutually prime number, the second mutually prime number, the random length and the random matrix, form a first public key; based on the first prime number, form a first private key.

In one embodiment of the present disclosure, the division module 820 is also used to: generate a first element based on a second coprime number and a second prime number, and use the product of the first prime number and the second prime number as the second element; and construct a first public key based on the first element, the second element, the random length and the random matrix and the first coprime number.

In one embodiment of the present disclosure, the first encryption module 830 is also used to: assign a first confidential parameter to all flash message texts, wherein the first confidential parameter is a random positive integer; for any flash message text, determine a second confidential parameter of the flash message text based on a first prime number and the first confidential parameter corresponding to the flash message text; encrypt the flash message text based on the first confidential parameter and the second confidential parameter to generate a flash message ciphertext.

In one embodiment of the present disclosure, the first encryption module 830 is further used to: divide the remainder of dividing 1 by the first prime number by the sum of all first confidential parameters, and use the quotient as the second confidential parameter of the flash message text.

In one embodiment of the present disclosure, the first encryption module 830 is further used to encrypt the flash message text based on the first element, the first coprime number, the first confidential parameter, and the second confidential parameter.

In one embodiment of the present disclosure, the second encryption module 840 is further used to: assign a timestamp to any flash message ciphertext; and generate a signature text segment based on the timestamp, the first public key and the flash message ciphertext.

In one embodiment of the present disclosure, the second encryption module 840 is further used to: perform a hash operation on the timestamp and the flash message ciphertext, and multiply the operation result with the first public key to generate a signature text segment.

In one embodiment of the present disclosure, the division module 820 is also used to: randomly obtain two different third prime numbers and fourth prime numbers, and randomly obtain two mutually prime third coprime numbers and fourth coprime numbers, and obtain a random matrix of random length; based on the third prime number, the fourth prime number, the third coprime number, the fourth coprime number, the random length and the random matrix, form a second public key; based on the third prime number, form a second private key.

In one embodiment of the present disclosure, the acquisition module 810 is further used to: detect whether the calling user has been registered; and in response to detecting the registration information, determine the calling user information based on the registration information.

In one embodiment of the present disclosure, the acquisition module 810 is further used to: in response to failure to detect registration information, generate prompt information, where the prompt information is used to remind the calling user to register.

By dividing the flash message into multiple flash message texts for encrypted transmission, the complexity of encryption can be increased. At the same time, this method of using encrypted transmission and digital signature verification can improve the confidentiality of flash message transmission.

FIG9 is a schematic diagram of a calling device proposed in the present disclosure, which is applied to a cloud server. As shown in FIG9 , the calling device 900 includes: a detection module 910 , an authentication module 920 , an arrangement module 930 and a sending module 940 .

The detection module 910 is used to detect the V call sent by the calling client, and obtain the signature text segment, flash message ciphertext, first private key, second public key and second private key in the V call.

The authentication module 920 is used to perform signature authentication on the signature text segment based on the first private key and the flash message ciphertext.

The arrangement module 930 is used to rearrange the flash message ciphertext based on the authentication result to obtain the target flash message ciphertext.

The sending module 940 is used to encrypt the target flash message ciphertext based on the second public key to generate a flash message full-text signature, and send the flash message full-text signature, the second private key and the target flash message ciphertext to the called client.

In one embodiment of the present disclosure, the authentication module 920 is further used to: decode the flash message ciphertext based on the first private key to obtain a decoded text segment; match the decoded text segment with the corresponding signature text segment, that is, perform signature authentication.

In one embodiment of the present disclosure, the authentication module 920 is further used to: obtain the timestamp of the flash message ciphertext; perform a hash operation on the timestamp and the flash message ciphertext, and multiply the operation result with the first private key to obtain a decoded text segment.

In one embodiment of the present disclosure, the arrangement module 930 is further used to arrange and combine the candidate flash message ciphertexts corresponding to the signature text segments with the authentication result of passed verification in the order of timestamps to generate the target flash message ciphertext.

In one embodiment of the present disclosure, the arrangement module 930 is also used to: determine whether the current communication network environment is safe; in response to the current communication network environment being safe, arrange and combine the candidate flash message ciphertexts in the order of timestamps based on a first combination method; in response to the current communication network environment being unsafe, arrange and combine the candidate flash message ciphertexts in the order of timestamps based on a second combination method.

The signature text segment is signed and authenticated using the first private key and the flash message ciphertext. The verification result can be used to determine whether the flash message ciphertext has been lost or tampered with during transmission, thereby ensuring the security and integrity of the flash message ciphertext transmission.

FIG10 is a schematic diagram of a calling device proposed in the present disclosure, which is applied to a called client. As shown in FIG10 , the calling device 1000 includes: a monitoring module 1010 , an identification module 1020 , and a display module 1030 .

Among them, the monitoring module 1010 is used to detect the V call sent by the calling cloud server, and obtain the full-text signature of the flash message, the second private key and the target flash message ciphertext in the V call.

The identification module 1020 is used to perform signature authentication on the target flash message ciphertext based on the second private key and the full-text signature of the flash message.

The display module 1030 is used to decrypt the target flash message ciphertext in response to the signature authentication being passed to generate a flash message, and then display the flash message.

In one embodiment of the present disclosure, the identification module 1020 is further used to: decode the target flash message ciphertext based on the second private key to obtain the target flash message ciphertext signature; match the target flash message ciphertext signature with the flash message full text signature, that is, perform signature authentication.

In one embodiment of the present disclosure, the display module 1030 is further used to: obtain the operation instruction generated by the user based on the flash message; generate feedback information based on the operation instruction, and send it to the cloud server.

The target flash message ciphertext is signed and authenticated based on the second private key and the full-text signature of the flash message, which can prevent the cloud server from losing or tampering with the data packet when sending it to the called client, and ensure the integrity and authenticity of the flash message received by the called client.

In order to implement the above-mentioned embodiments, the embodiments of the present disclosure also propose an electronic device 1100, as shown in Figure 11, the electronic device 1100 includes: a processor 1101 and a memory 1102 communicatively connected to the processor, the memory 1102 stores instructions that can be executed by at least one processor, and the instructions are executed by at least one processor 1101 to implement a calling method as an embodiment of the first aspect of the present disclosure.

In order to implement the above embodiments, the embodiments of the present disclosure further propose a non-transitory computer-readable storage medium storing computer instructions, wherein the computer instructions are used to enable a computer to implement a calling method as in the first aspect of the embodiments of the present disclosure.

In order to implement the above embodiments, the embodiments of the present disclosure further propose a computer program product, including a computer program, which implements the calling method of the first aspect of the present disclosure when executed by a processor.

In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present disclosure.

In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the feature. In the description of the present disclosure, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

Although the embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are illustrative and are not to be construed as limitations of the present disclosure. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present disclosure.

Claims (24)

1. A calling method, characterized in that it is applied to a calling client, comprising: Acquire calling user information, and generate a call flash message based on the calling user information; In response to identifying a call request based on the call flash message, generating a first public key, a first private key, a second public key, and a second private key, and randomly dividing the call flash message into a preset number of flash message texts; Performing a first encryption on the flash message text by homomorphic encryption to generate a flash message ciphertext; The flash message ciphertext is encrypted for the second time based on the first public key to generate a signature text segment, and the signature text segment, the flash message ciphertext, the first private key, the second public key and the second private key are sent to the cloud server via a V call. 2. The method according to claim 1, characterized in that generating the first public key and the first private key comprises: Randomly obtain two different first prime numbers and second prime numbers, and randomly obtain two mutually prime first coprime numbers and second coprime numbers, and obtain a random matrix of random length; Based on the first prime number, the second prime number, the first coprime number, the second coprime number, the random length and the random matrix, forming the first public key; Based on the first prime number, the first private key is constructed. 3. method according to claim 2, is characterized in that, described based on described first prime number, described second prime number, described first coprime number, described second coprime number, described random length and described random matrix, set up described first public key, comprising: Generate a first element based on the second coprime number and the second prime number, and use the product of the first prime number and the second prime number as the second element; The first public key is constructed based on the first element, the second element, the random length, the random matrix and the first coprime number. 4. The method according to claim 3, characterized in that the first encryption of the flash message text by homomorphic encryption method to generate the flash message ciphertext comprises: Allocate a first confidential parameter to each flash message text, wherein the first confidential parameter is a random positive integer; For any flash message text, based on the first prime number and the first confidential parameter corresponding to the flash message text, determine the second confidential parameter of the flash message text; The flash message text is encrypted based on the first confidential parameter and the second confidential parameter to generate the flash message ciphertext. 5. The method according to claim 4, characterized in that the determining the second confidentiality parameter of the flash message text based on the first prime number and the first confidentiality parameter corresponding to the flash message text comprises: The remainder obtained by dividing 1 by the first prime number is divided by the sum of all first confidential parameters, and the quotient is used as the second confidential parameter of the flash message text. 6. The method according to claim 4, characterized in that encrypting the flash message text based on the first confidentiality parameter and the second confidentiality parameter comprises: The flash message text is encrypted based on the first element, the first coprime number, the first confidential parameter, and the second confidential parameter. 7. The method according to claim 6, characterized in that the second encryption of the flash message ciphertext based on the first public key to generate a signature text segment comprises: For any flash message ciphertext, assign a timestamp to the flash message ciphertext; A signature text segment is generated based on the timestamp, the first public key and the flash message ciphertext. 8. The method according to claim 7, characterized in that the step of generating a signature text segment based on the timestamp, the first public key and the flash message ciphertext comprises: A hash operation is performed on the timestamp and the flash message ciphertext, and the operation result is multiplied by the first public key to generate the signature text segment. 9. The method according to claim 1, wherein generating the second public key and the second private key comprises: Randomly obtain two different third prime numbers and fourth prime numbers, and randomly obtain two mutually prime third and fourth coprime numbers, and obtain a random matrix of random length; Based on the third prime number, the fourth prime number, the third mutually prime number, the fourth mutually prime number, the random length and the random matrix, forming the second public key; Based on the third prime number, the second private key is constructed. 10. The method according to claim 1, wherein obtaining calling user information further comprises: Check whether the calling user has registered; In response to detecting the registration information, the caller information is determined based on the registration information. 11. The method according to claim 10, characterized in that the method further comprises: In response to not detecting the registration information, a prompt message is generated, where the prompt message is used to remind the calling user to register. 12. A calling method, characterized in that it is applied to a cloud server, comprising: Detecting a V call sent by the calling client, obtaining a signature text segment, a flash message ciphertext, a first private key, a second public key, and a second private key in the V call, wherein the signature text segment is generated by the calling client performing a second encryption on the flash message ciphertext based on the first public key; Perform signature authentication on the signature text segment based on the first private key and the flash message ciphertext; Rearranging the flash message ciphertext based on the authentication result to obtain the target flash message ciphertext; The target flash message ciphertext is encrypted based on the second public key to generate a flash message full-text signature, and the flash message full-text signature, the second private key and the target flash message ciphertext are sent to the called client. 13. The method according to claim 12, characterized in that the step of performing signature authentication on the signature text segment based on the first private key and the flash message ciphertext comprises: Decoding the flash message ciphertext based on the first private key to obtain a decoded text segment; The decoded text segment is matched with the corresponding signed text segment, that is, signature authentication is performed. 14. The method according to claim 13, characterized in that the step of decoding the flash message ciphertext based on the first private key to obtain a decoded text segment comprises: Obtaining the timestamp of the flash message ciphertext; A hash operation is performed on the timestamp and the flash message ciphertext, and the operation result is multiplied by the first private key to obtain the decoded text segment. 15. The method according to claim 14, characterized in that the step of rearranging the flash message ciphertext based on the authentication result to obtain the target flash message ciphertext comprises: The candidate flash message ciphertexts corresponding to the signature text segment whose authentication result is verified are arranged and combined in the order of the timestamps to generate the target flash message ciphertext. 16. The method according to claim 15, characterized in that the candidate flash message ciphertexts corresponding to the signature text segment with the authentication result of passed verification are arranged and combined according to the order of the timestamps, comprising: Determine whether the current communication network environment is secure; In response to the current communication network environment being secure, the candidate flash message ciphertexts are arranged and combined in the order of the timestamps based on a first combination method; In response to the current communication network environment being insecure, the candidate flash message ciphertexts are arranged and combined in the order of the timestamps based on a second combination method. 17. A calling method, characterized in that it is applied to a called client, comprising: Detecting a V call sent by the calling cloud server, obtaining the full-text signature of the flash message, the second private key and the target flash message ciphertext in the V call, wherein the target flash message ciphertext is generated by the cloud server by rearranging the flash message ciphertext based on the authentication result, the full-text signature of the flash message is generated by the cloud server encrypting the target flash message ciphertext based on the second public key, the authentication result is generated by the cloud server performing signature authentication on the signature text segment based on the first private key and the flash message ciphertext, and the signature text segment is generated by the calling client performing a second encryption on the flash message ciphertext based on the first public key; Performing signature authentication on the target flash message ciphertext based on the second private key and the flash message full-text signature; In response to the signature authentication being passed, the target flash message ciphertext is decrypted to generate a flash message, and the flash message is displayed. 18. The method according to claim 17, characterized in that the step of performing signature authentication on the target flash message ciphertext based on the second private key and the flash message full text signature comprises: Decoding the target flash message ciphertext based on the second private key to obtain the target flash message ciphertext signature; The target flash message ciphertext signature is matched with the flash message full text signature, that is, signature authentication is performed. 19. The method according to claim 17, characterized in that the method further comprises: Obtaining an operation instruction generated by the user based on the flash message; Feedback information is generated based on the operation instruction and sent to the cloud server. 20. A calling device, characterized in that it is applied to a calling client, comprising: An acquisition module, used for acquiring calling user information and generating a call flash message based on the calling user information; A division module, for generating a first public key, a first private key, a second public key, and a second private key in response to identifying a call request based on the call flash message, and randomly dividing the call flash message into flash message texts of a preset number of segments; A first encryption module, used for performing a first encryption on the flash message text by homomorphic encryption to generate a flash message ciphertext; The second encryption module is used to perform a second encryption on the flash message ciphertext based on the first public key to generate a signature text segment, and send the signature text segment, the flash message ciphertext, the first private key, the second public key and the second private key to the cloud server via a V call. 21. A calling device, characterized in that it is applied to a cloud server, comprising: A detection module, configured to detect a V call sent by a calling client, and obtain a signature text segment, a flash message ciphertext, a first private key, a second public key, and a second private key in the V call, wherein the signature text segment is generated by the calling client performing a second encryption on the flash message ciphertext based on the first public key; An authentication module, used for performing signature authentication on the signature text segment based on the first private key and the flash message ciphertext; An arrangement module, used for rearranging the flash message ciphertext based on the authentication result to obtain the target flash message ciphertext; The sending module is used to encrypt the target flash message ciphertext based on the second public key to generate a flash message full-text signature, and send the flash message full-text signature, the second private key and the target flash message ciphertext to the called client. 22. A calling device, characterized in that it is applied to a called client, comprising: A monitoring module is used to detect a V call sent by a calling cloud server, and obtain a flash message full-text signature, a second private key, and a target flash message ciphertext in the V call, wherein the target flash message ciphertext is generated by the cloud server rearranging the flash message ciphertext based on an authentication result, the flash message full-text signature is generated by the cloud server encrypting the target flash message ciphertext based on the second public key, the authentication result is generated by the cloud server performing signature authentication on a signature text segment based on the first private key and the flash message ciphertext, and the signature text segment is generated by the calling client performing a second encryption on the flash message ciphertext based on the first public key; An identification module, used for performing signature authentication on the target flash message ciphertext based on the second private key and the full-text signature of the flash message; The display module is used to decrypt the target flash message ciphertext in response to the signature authentication being passed to generate a flash message, and display the flash message. 23. An electronic device, characterized in that it comprises a memory and a processor; The processor runs a program corresponding to the executable program code by reading the executable program code stored in the memory, so as to implement the method as claimed in any one of claims 1-11, the method as claimed in any one of claims 12-16, or the method as claimed in any one of claims 17-19. 24. A computer-readable storage medium, characterized in that the computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed by a processor, they are used to implement the method according to any one of claims 1 to 11, the method according to any one of claims 12 to 16, or the method according to any one of claims 17 to 19.