WO2017054480A1

WO2017054480A1 - Multimedia data encryption method and apparatus

Info

Publication number: WO2017054480A1
Application number: PCT/CN2016/083713
Authority: WO
Inventors: 赵化强; 章勋; 田晓川
Original assignee: 北京奇虎科技有限公司; 奇智软件（北京）有限公司
Priority date: 2015-09-30
Filing date: 2016-05-27
Publication date: 2017-04-06
Also published as: CN105337963A

Abstract

The present invention relates to the technical field of information, and disclosed are a multimedia data encryption method and apparatus. The method comprises: firstly acquiring multimedia data to be transmitted; then dividing the multimedia data into a plurality of multimedia data units; then respectively encrypting the plurality of multimedia data units through pre-set encryption rules; and finally sending the encrypted plurality of multimedia data units to a client. According to the above-mentioned method and apparatus, the transmission security of the multimedia data can be guaranteed, and network system resources occupied by the encrypted multimedia data in the transmission process can be reduced.

Description

Multimedia data encryption method and device

Technical field

The present invention relates to the field of information technology, and in particular, to a multimedia data encryption method and apparatus.

Background technique

With the continuous development of information technology, network cameras have emerged and are becoming more and more popular. Among them, the network camera is a new generation camera combined with the traditional camera and network technology, which can transmit the recorded multimedia data to the server through the network, and then transmit it to the client through the network server. Network cameras can be used to monitor children, elderly people living alone, their homes, and more. In order to prevent multimedia data from being hacked during transmission to reveal user privacy and ensure the security of multimedia data, multimedia data is usually encrypted.

At present, the multimedia data is encrypted by the traditional SSL (Secure Sockets Layer) protocol, that is, the multimedia data needs to be encrypted as a whole, and the multimedia data is encrypted by the traditional SSL protocol to generate additional data. The extra data will occupy additional network resources when transmitting, and the traditional SSL protocol encrypts the multimedia data is more complicated and occupies more network system resources.

Summary of the invention

In view of the above problems, the present invention has been made in order to provide a multimedia data encryption method and apparatus that overcomes the above problems or at least partially solves the above problems, and the main purpose is to solve the problem that the encrypted multimedia data is occupied during the transmission process. The problem of resources.

According to an aspect of the present invention, a multimedia data encryption method is provided, including:

Obtaining multimedia data to be transmitted;

Dividing the multimedia data into a plurality of multimedia data units;

Encrypting the plurality of multimedia data units separately by using a preset encryption rule;

The encrypted plurality of multimedia data units are sent to the client.

According to another aspect of the present invention, a multimedia data encryption apparatus is provided, including:

An acquiring unit, configured to acquire multimedia data to be transmitted;

a dividing unit, configured to divide the multimedia data acquired by the acquiring unit into a plurality of multimedia data units;

An encryption unit, configured to encrypt, by using a preset encryption rule, a plurality of multimedia data units divided by the dividing unit;

And a sending unit, configured to send the encrypted plurality of multimedia data units to the client.

According to still another aspect of the present invention, a computer program is provided, comprising computer readable code, when the computer readable code is run on a computing device, causing the computing device to perform according to the above Multimedia data encryption method.

According to still another aspect of the present invention, a computer readable medium storing the above computer program is provided.

With the above technical solution, the technical solution provided by the embodiment of the present invention has at least the following advantages:

An embodiment of the present invention provides a multimedia data encryption method and device, which first acquires multimedia data to be transmitted; then divides the multimedia data into multiple multimedia data units; and then pairs the multimedia data by using preset encryption rules. The unit performs encryption separately; finally, the encrypted plurality of multimedia data units are sent to the client. Compared with the current encryption of multimedia data by conventional SSL, the embodiment of the present invention first divides the multimedia data into multiple multimedia data units, and then separately encrypts the plurality of multimedia data units, and finally outputs the encrypted multimedia data unit. , thereby reducing the waste of network system resources.

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

DRAWINGS

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

FIG. 1 is a flowchart of a multimedia data encryption method according to an embodiment of the present invention;

FIG. 2 is a flowchart of another multimedia data encryption method according to an embodiment of the present invention;

FIG. 3 is a structural block diagram of a multimedia data encryption apparatus according to an embodiment of the present invention;

FIG. 4 is a structural block diagram of another multimedia data encryption apparatus according to an embodiment of the present invention;

Figure 5 is a schematic block diagram showing a computing device for performing a multimedia data encryption method in accordance with the present invention;

Fig. 6 schematically shows a storage unit for holding or carrying program code implementing the multimedia data encryption method according to the present invention.

detailed description

The invention is further described below in conjunction with the drawings and specific embodiments.

An embodiment of the present invention provides a multimedia data encryption method. As shown in FIG. 1 , the method may be applied to a relay server, a network camera, etc., and the method includes:

101. Acquire multimedia data to be transmitted.

The multimedia data may be video data or audio data, which is not in the embodiment of the present invention. Make specific limits. The video data may be video data that is captured by the network camera and needs to be transmitted to the client, and the video data may be AVI (Audio Video Interleaved), RM (remove, streaming video file format), WMV (Windows Media). Video, streaming media format), FLV (FlashVideo, streaming media format), DV-AVI (Digital Video Format), MPEG (Moving Pictures Experts Group/Motion Pictures Experts Group), MOV (QuickTime) The video data in the format of the video format, the ASF (Advanced Streaming format), and the like are not specifically limited in the embodiment of the present invention. The audio data may be audio data that is recorded by the network camera and needs to be transmitted to the client. The audio data may be audio data in the format of MP3, AVI, CD, WMA, RealAudio, etc., which is not specifically limited in the embodiment of the present invention. In the embodiment of the present invention, the multimedia data to be transmitted is obtained by forwarding the multimedia data to be transmitted to the client, so that the multimedia data recorded by the network camera is transmitted to the client through the network.

102. Divide the multimedia data into multiple multimedia data units.

The multimedia data unit is obtained by dividing multimedia data. In the embodiment of the present invention, the multimedia data may be equally divided into a plurality of multimedia data units according to a multimedia frame in a multimedia data or a time point in a multimedia playing process, or may be according to a multimedia frame or a multimedia playing process in the multimedia data. The time point is to divide the multimedia data into a plurality of multimedia data units in a non-uniform manner, which is not specifically limited in the embodiment of the present invention. For the embodiment of the present invention, the number of the multimedia frames in the multimedia data or the length of the time in the multimedia playing process may be set according to actual requirements, or may be configured by default by the system, which is not specifically limited in the embodiment of the present invention.

For example, the video data to be transmitted includes 300 video frames. If the number of video frames in each video data unit is required to be 30, the video data to be transmitted may be divided into one data unit every 30 frames. The average is divided into 10 video data units, and each video data unit includes 30 video frames; if the number of video frames in each video data unit is not required, the number of video data units is required to be 10, the video data to be transmitted may be divided into 10 video data units on average or non-average; if the number of video frames in each video data unit is not required, the number of video data units is not If the request is made, the video data to be transmitted may be arbitrarily divided, and the video data to be transmitted may be divided into 300 video data units, and each video data unit corresponds to one video frame.

103. Encrypt the plurality of multimedia data units separately by using a preset encryption rule.

The preset encryption rule may be set according to the requirements of the user, or may be configured by default by the system, which is not specifically limited in the embodiment of the present invention. The plurality of multimedia data units are encrypted by the preset encryption rule, and the storage space occupied by the encrypted multimedia data is the same as the storage space occupied by the original multimedia data. For the embodiment of the present invention, the preset encryption rule may be an asymmetric encryption rule with a simple encryption algorithm, or a symmetric encryption rule with a complicated encryption algorithm. The symmetric encryption rule is that both the encryption and the decryption use the same key. The encryption and decryption algorithm, and the encryption speed of the symmetric encryption rule is fast, and the symmetric encryption rule is generally applicable when the message sender needs to encrypt a large amount of data. The symmetric encryption rule may specifically DES (Data Encryption Algorithm) algorithm, 3DES (Triple DES, triple data encryption algorithm) algorithm, RC5 (block cipher algorithm) algorithm, IDEA (IntelliJ IDEA, data block encryption algorithm) algorithm, etc. No specific restrictions.

In the embodiment of the present invention, in order to meet the security requirement of the multimedia data encryption, the multimedia data may be encrypted by using an asymmetric encryption rule with a simple encryption algorithm, and the multimedia data is encrypted by a simple asymmetric encryption rule. Encryption, the size of the encrypted multimedia data storage space can be slightly larger than the original multimedia data storage space, thereby further improving the security of the multimedia data encryption while ensuring that the storage space occupied by the encrypted multimedia data is relatively small. Sex.

104. Send the encrypted plurality of multimedia data units to the client.

The plurality of multimedia data units are used for displaying/outputting by the client, and sending the encrypted plurality of multimedia data units refers to transmitting the encrypted plurality of multimedia data units to the network camera through the network. Client device. For the embodiment of the present invention, the multimedia data to be transmitted is divided into a plurality of multimedia data units, and then the plurality of multimedia data units are separately encrypted according to the preset encryption rule, and finally the encrypted plurality of multimedia data units are sent to the client. end. Thereby, the additional data generated by the traditional SSL encryption of the multimedia data is solved, thereby reducing the waste of the network system resources. At the same time, separately encrypting multiple multimedia data units in the multimedia data does not reduce security.

For the embodiment of the present invention, the scenario that can be applied is as follows, but is not limited thereto, including: the number of multimedia frames to be transmitted by the relay server to be transmitted is 400, if the multimedia frame in each multimedia data unit is required The number of the multimedia data to be transmitted is divided into four multimedia data units, and each multimedia data unit includes 100 multimedia frames. Then, the plurality of multimedia data units are respectively encrypted by using a preset encryption rule, and the preset encryption rule may be an asymmetric encryption rule with a simple encryption algorithm, or a symmetric encryption rule with a relatively complicated encryption algorithm, and specific encryption. The rules may be encryption algorithms such as DES, DES, and RC5, and then multiple multimedia data units are separately encrypted by corresponding encryption keys in the symmetric encryption rules, and finally the encrypted multiple multimedia data units are sent to the network camera through the network. Corresponding client device. In the embodiment of the present invention, the multimedia data to be transmitted is divided into a plurality of multimedia data units, and then the plurality of multimedia data units are separately encrypted according to the preset encryption rule, and finally the encrypted plurality of multimedia data units are sent. To the client. Thereby, the additional data generated by the traditional SSL encryption of the multimedia data is solved, thereby reducing the waste of the network system resources.

An embodiment of the present invention provides a multimedia data encryption method, which first acquires multimedia data to be transmitted; then divides the multimedia data into multiple multimedia data units; and then separately sets the multiple multimedia data units by using preset encryption rules. Encrypting is performed; finally, the encrypted plurality of multimedia data units are sent to the client, and the plurality of multimedia data units are used for display/output by the client. Compared with the current encryption of multimedia data by conventional SSL, the embodiment of the present invention first divides the multimedia data into a plurality of multimedia data units, and then separately encrypts the plurality of multimedia data units, and finally outputs the encrypted data. Multimedia data units, thereby reducing the waste of network system resources.

An embodiment of the present invention provides another multimedia data encryption method. As shown in FIG. 2, the method includes:

201. Acquire multimedia data to be transmitted.

For the embodiment of the present invention, the multimedia data is video data or audio data. The video data may be video data that is captured by the network camera and needs to be transmitted to the client, and the video data may be AVI (Audio Video Interleaved), RM (remove, streaming video file format), WMV (Windows Media). Video, streaming media format), FLV (FlashVideo, streaming media format), DV-AVI (Digital Video Format), MPEG (Moving Pictures Experts Group/Motion Pictures Experts Group), MOV (QuickTime) The video data in the format of the video format, the ASF (Advanced Streaming format), and the like are not specifically limited in the embodiment of the present invention. The audio data may be audio data that is recorded by the network camera and needs to be transmitted to the client. The audio data may be audio data in the format of MP3, AVI, CD, WMA, RealAudio, etc., which is not specifically limited in the embodiment of the present invention. In the embodiment of the present invention, the multimedia data to be transmitted is obtained by forwarding the multimedia data to be transmitted to the client, so that the multimedia data recorded by the network camera is transmitted to the client through the network.

202. Divide the multimedia data into multiple multimedia frame data according to a preset rule.

The preset rule may be set according to actual requirements, or may be configured by default by the system, which is not specifically limited in the embodiment of the present invention. The preset rule may specifically divide the multimedia data into multiple multimedia frame data according to the multimedia frame in the multimedia data. For example, the multimedia data may be divided into multiple groups according to a set of each multimedia frame, each set of two multimedia frames, and the like. Multimedia frame data; or a point in time during multimedia playback to divide multimedia data into multiple multimedia frame data. It should be noted that the time point in the multimedia playing process of the preset rule may be set according to the actual needs of the user, or may be configured by default by the system, which is not specifically limited in the embodiment of the present invention. For the embodiment of the present invention, the multiple multimedia data division rules configured in the preset rule can flexibly divide the multimedia data into multiple multimedia frame data according to actual requirements, thereby improving the efficiency of dividing the multimedia data.

For example, if the video data to be transmitted acquired by the relay server includes 80 video frames, the video data may be divided into 80 video frame data according to the video frame. For example, the playback time of the video data to be transmitted acquired by the relay server is 30 minutes, and the time point of the video playback process configured in the preset rule is 3 minutes, and the video data is 3 minutes according to the time point during the video playback process. The data is divided into 10 video data units with a duration of 3 minutes, and each video data unit contains one or more video frames.

For the embodiment of the present invention, after the multimedia data is divided into multiple multimedia frame data according to a preset rule, the method further includes: adjusting, according to a preset sorting rule, where the plurality of multimedia frame data is located in the multimedia data. Position order. For the embodiment of the present invention, the position order of the plurality of multimedia frame data in the multimedia data is adjusted according to a preset sorting rule, and the security of subsequent multimedia frame data encryption may be further improved. The preset sorting rule may be sorted according to the original serial number of the multimedia frame data, and It can be sorted according to the storage space size of the multimedia frame data, and can also be sorted according to the play duration of the multimedia frame data, which is not specifically limited in the embodiment of the present invention.

For example, after dividing the video data into five video frame data, if the original video numbers corresponding to the five video frame data in the original video data are 1, 2, 3, 4, and 5 respectively, the preset collation is The position sequence of the video frame data is adjusted according to the original sequence number of the video frame data, and the original sequence number of the corresponding position of the adjusted plurality of video frame data may be 5, 4, 3, 2, 1. For the embodiment of the present invention, the position order of the plurality of multimedia frame data in the multimedia data is adjusted according to a preset sorting rule, and the security of subsequent multimedia frame data encryption may be further improved.

203. Encrypt the plurality of multimedia frame data separately by using a preset symmetric encryption rule and the encryption key.

For the embodiment of the present invention, the method further includes: generating an encryption key corresponding to the preset encryption rule; or receiving an encryption key corresponding to the preset encryption rule sent by the external device. The symmetric encryption rule is an encryption method of a single key system, and the encryption key in the symmetric encryption rule can simultaneously serve as encryption and decryption of information. The preset symmetric encryption rule may be set according to the actual needs of the user, or may be configured by default by the system, which is not specifically limited in the embodiment of the present invention.

In the embodiment of the present invention, the encryption key corresponding to the preset symmetric encryption rule may be generated by the data sender, that is, may be generated by a network camera or a relay server corresponding to the network camera; or the preset symmetric encryption may be performed. The encryption key corresponding to the rule is configured in the external device, and each time before the multimedia data is transmitted, an encryption key is dynamically generated according to a preset symmetric encryption rule in the external device, and then the encryption key is HTTPS ( The Hyper Text Transfer Protocol over Secure Socket Layer (network protocol) transmission mode is respectively transmitted to the data sending end and the client end, and the data transmitting end and the client receive the encryption key and perform data transmission. It should be noted that when the external device transmits the encryption key to the data transmitting end and the client, since the encryption key is transmitted through HTTPS, the encryption key can be securely transmitted to the data transmitting end and the client, and externally. The device only transmits the encryption key through HTTPS, instead of transmitting the encrypted multimedia data itself, so this encryption method does not occupy more network system resources.

For the embodiment of the present invention, the plurality of multimedia frame data is encrypted by the preset symmetric encryption rule, and the storage space occupied by the encrypted multimedia data is the same as the storage space occupied by the original multimedia data. In the embodiment of the present invention, the preset symmetric encryption rule may be a DES (Data Encryption Algorithm) algorithm, a 3DES (Triple DES) algorithm, an RC5 (block cipher algorithm) algorithm, and an IDEA. The (IntelliJ IDEA, Data Block Encryption Algorithm) algorithm and the like are not specifically limited in the embodiment of the present invention. For the embodiment of the present invention, since the symmetric encryption rule has the advantages of small calculation amount, fast encryption speed, high encryption efficiency, etc., the plurality of multimedia frame data are separately encrypted by using a preset symmetric encryption rule, thereby improving the efficiency of multimedia data encryption. . At the same time, encrypting multiple multimedia frame data divided by multimedia data separately does not reduce security.

For the embodiment of the present invention, the plurality of the symmetric encryption rules and the encryption key are used to Before the multimedia frame data is separately encrypted, the method further includes: acquiring an original serial number of each multimedia frame data; respectively generating, according to the encryption key and the original serial number of each multimedia frame data, respectively corresponding to each of the multimedia frame data Key. The original sequence number of the multimedia frame data is used to indicate the position sequence of the multimedia frame data in the multimedia data. Specifically, the original sequence number of the multimedia frame data may be represented by the data number, and the encryption key of the preset symmetric encryption rule may be obtained from Obtained in the server. For example, the original serial numbers of the acquired multimedia frame data are 5, 4, 2, 1, and 3, respectively, and the encryption key of the preset symmetric encryption rule is 123, and the private key 123 and the multimedia frame data are original according to the symmetric encryption rule. Sequence number 5, generating a key of the original frame number 5 of the multimedia frame data; generating the key of the original frame number 4 of the multimedia frame data according to the encryption key 123 of the symmetric encryption rule and the original frame number 4 of the multimedia frame data; Generating the key of the multimedia frame data with the original sequence number 2 according to the encryption key 123 of the symmetric encryption rule and the original sequence number 2 of the multimedia frame; generating the original according to the encryption key 123 of the symmetric encryption rule and the original sequence number 1 of the multimedia frame The key of the multimedia frame data of sequence number 1; the key of the multimedia frame data of the original sequence number 3 is generated according to the encryption key 123 of the symmetric encryption rule and the original sequence number 3 of the multimedia frame. In the embodiment of the present invention, the encryption key corresponding to each of the multimedia frame data generated by the encryption key of the preset symmetric encryption rule and the original serial number of each multimedia frame data may further improve the complexity of the encryption key. Sex, which improves the security of multimedia data encryption.

For the embodiment of the present invention, the encrypting the plurality of multimedia frame data by using the preset symmetric encryption rule separately includes: encrypting the plurality of multimedia frame data respectively by using a key corresponding to each of the multimedia frame data . For example, the key corresponding to the multimedia frame data with the original sequence number 1 is 145; the key corresponding to the multimedia frame data with the original sequence number 2 is 147; and the key corresponding to the multimedia frame data with the original sequence number 3 is 124. Then, the multimedia frame data with the original sequence number 1 is encrypted according to the key 145; the multimedia frame data with the original sequence number 2 is encrypted according to the key 147; and the multimedia frame data with the original serial number 3 is performed according to the key 124. encryption. In the embodiment of the present invention, according to the preset encryption key and the original serial number of each multimedia frame data, respectively generate a key corresponding to each of the multimedia frame data, and generate a generated key Encrypting multimedia frame data can further improve the security of multimedia data encryption.

204. Send the encrypted multiple multimedia frame data after the adjustment sequence to the client.

The transmitting the encrypted plurality of multimedia data units means that the encrypted plurality of multimedia data units are sent to the client device corresponding to the network camera through the network. For the embodiment of the present invention, the multimedia data to be transmitted is divided into a plurality of multimedia data units, and then the plurality of multimedia data units are separately encrypted according to the preset encryption rule, and finally the encrypted multiple multimedia frame data after the order is adjusted. Sent to the client. Thereby, the additional data generated by the traditional SSL encryption of the multimedia data is solved, thereby reducing the waste of the network system resources. At the same time, separately encrypting multiple multimedia data units in the multimedia data does not reduce security.

For the embodiment of the present invention, the encryption key is further sent to the client, and the encryption key is used by the client to decrypt the encrypted plurality of multimedia data units. Wherein the encryption The key can be sent to the client through the HTTPS transmission mode and by the intermediate server corresponding to the network camera or network camera. It should be noted that when the intermediate server corresponding to the network camera or the network camera transmits the encryption key to the client, since the encryption key is transmitted through HTTPS, the encryption key can be securely transmitted to the client.

For the embodiment of the present invention, the scenario that can be applied is as follows, but is not limited thereto, and includes: the video data to be transmitted acquired by the relay server includes five video frames, and the video data to be transmitted is divided into 5 video frame data, and the original serial numbers occupied by the 5 video frame data in the original video data are 1, 2, 3, 4, and 5, respectively. Then, the position order of the plurality of video frame data in the video data is adjusted according to a preset sorting rule, wherein the preset sorting rule is to adjust the position of each video frame data according to the original sequence number of each video frame data in descending order. Position, the position sequence of the adjusted video frame data in the original video data is 5, 4, 3, 2, 1, respectively, and then obtain the original sequence number of each video frame data after adjustment, according to the preset symmetric encryption rule The encryption key and the original sequence number of the respective video frame data respectively generate a key corresponding to each of the video frame data, and finally pair the plurality of videos by using a key corresponding to each of the video frame data The frame data is separately encrypted, and the encrypted plurality of multimedia frame data after the adjustment order is transmitted to the client. In the embodiment of the present invention, the acquired multimedia data to be generated is divided into a plurality of multimedia data units, and then the location data of the multimedia data unit in the multimedia data is adjusted, and the plurality of preset symmetric encryption rules are used to The multimedia data units are separately encrypted, and finally the encrypted multiple multimedia frame data after the order adjustment is sent to the client. This replaces the original SSL encryption of multimedia data, solves the problem of extra data generated by SSL encryption of multimedia data, thereby reducing the waste of network system resources.

An embodiment of the present invention provides another multimedia data encryption method, which first acquires multimedia data to be transmitted; then divides the multimedia data into multiple multimedia data units; and then pairs the multiple multimedia data units by using preset encryption rules. Encryption is performed separately; the encrypted plurality of multimedia data units are sent to the client, and the plurality of multimedia data units are used for output by the client. Compared with the current encryption of multimedia data by conventional SSL, the embodiment of the present invention first divides the multimedia data into multiple multimedia data units, and then separately encrypts the plurality of multimedia data units, and finally outputs the encrypted multimedia data unit. , thereby reducing the waste of network system resources.

The embodiment of the present invention provides a multimedia data encryption apparatus. As shown in FIG. 3, the multimedia data encryption apparatus includes: an acquisition unit 31, a division unit 32, an encryption unit 33, and a transmission unit 34.

The obtaining unit 31 is configured to acquire multimedia data to be transmitted.

The dividing unit 32 is configured to divide the multimedia data acquired by the acquiring unit 31 into a plurality of multimedia data units.

The encryption unit 33 is configured to separately encrypt the plurality of multimedia data units divided by the dividing unit 32 by using a preset encryption rule.

The sending unit 34 is configured to send the encrypted plurality of multimedia data units to the client.

The plurality of multimedia data units are used for display/output by the client.

It should be noted that other corresponding descriptions of the functional units involved in the multimedia data encryption apparatus provided by the embodiment of the present invention may be referred to the corresponding description of the method shown in FIG. 1 , and details are not described herein again.

An embodiment of the present invention provides a multimedia data encryption apparatus, which first acquires multimedia data to be transmitted; then divides the multimedia data into a plurality of multimedia data units; and separately sets the multiple multimedia data units by using preset encryption rules. Encrypting is performed; finally, the encrypted plurality of multimedia data units are sent to the client, and the plurality of multimedia data units are used for display/output by the client. Compared with the current encryption of multimedia data by conventional SSL, the embodiment of the present invention first divides the multimedia data into multiple multimedia data units, and then separately encrypts the plurality of multimedia data units, and finally outputs the encrypted multimedia data unit. , thereby reducing the waste of network system resources.

An embodiment of the present invention provides another multimedia data encryption apparatus. As shown in FIG. 4, the multimedia data encryption apparatus includes an acquisition unit 41, a division unit 42, an encryption unit 43, and a transmission unit 44.

The obtaining unit 41 is configured to acquire multimedia data to be transmitted.

The dividing unit 42 is configured to divide the multimedia data acquired by the acquiring unit 41 into a plurality of multimedia data units.

The encryption unit 43 is configured to separately encrypt the plurality of multimedia data units divided by the dividing unit 42 by using a preset encryption rule.

The sending unit 44 is configured to send the multiple multimedia data units encrypted by the encryption unit to the client.

Further, the apparatus further includes: a generating unit 45 and/or a receiving unit 46.

The generating unit 45 is configured to generate an encryption key corresponding to the preset encryption rule.

The receiving unit 46 is configured to receive an encryption key corresponding to the preset encryption rule sent by the external device.

The dividing unit 42 is specifically configured to divide the multimedia data into multiple multimedia frame data according to a preset rule.

The encryption unit 43 is specifically configured to separately encrypt the plurality of multimedia frame data by using a preset symmetric encryption rule and the encryption key.

Further, the device further includes: an adjustment unit 47.

The adjusting unit 47 is configured to adjust a position sequence of the plurality of multimedia frame data in the multimedia data according to a preset sorting rule.

The sending unit 44 is specifically configured to send the encrypted multiple multimedia frame data after the adjustment sequence to the client.

further,

The acquiring unit 41 is further configured to acquire an original serial number of each multimedia frame data.

The generating unit 45 is further configured to: according to the encryption key and an original sequence of the multimedia frame data The column numbers respectively generate keys respectively corresponding to the respective multimedia frame data.

The encryption unit 43 is configured to separately encrypt the plurality of multimedia frame data by using a key corresponding to each of the multimedia frame data.

The sending unit 44 is further configured to send the encryption key to the client.

For the embodiment of the present invention, the multimedia data is video data or audio data.

It should be noted that other corresponding descriptions of the functional units involved in another multimedia data encryption apparatus provided by the embodiment of the present invention may be referred to the corresponding description of the method shown in FIG. 2, and details are not described herein again.

An embodiment of the present invention provides another multimedia data encryption apparatus, which first acquires multimedia data to be transmitted; then divides the multimedia data into multiple multimedia data units; and then pairs the multiple multimedia data units by using preset encryption rules. Encryption is performed separately; finally, the encrypted plurality of multimedia data units are sent to the client, and the plurality of multimedia data units are used for output by the client. Compared with the current encryption of multimedia data by conventional SSL, the embodiment of the present invention first divides the multimedia data into multiple multimedia data units, and then separately encrypts the plurality of multimedia data units, and finally outputs the encrypted multimedia data unit. , thereby reducing the waste of network system resources.

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

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

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

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

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

For example, Figure 5 illustrates a block diagram of a computing device that can implement a method of encrypting multimedia data. The computing device conventionally includes a processor 510 and a computer program product or computer readable medium in the form of a memory 520. The memory 520 may be an electronic memory such as a flash memory, an EEPROM (Electrically Erasable Programmable Read Only Memory), an EPROM, a hard disk, or a ROM. Memory 520 has a storage space 530 that stores program code 531 for performing any of the method steps described above. For example, storage space 530 storing program code may include various program code 531 for implementing various steps in the above methods, respectively. The program code can be read from or written to one or more computer program products. These computer program products include program code carriers such as hard disks, compact disks (CDs), memory cards or floppy disks. Such a computer program product is typically a portable or fixed storage unit such as that shown in FIG. The storage unit may have storage segments, storage spaces, and the like that are similarly arranged to memory 520 in the computing device of FIG. The program code can be compressed, for example, in an appropriate form. Typically, the storage unit comprises computer readable code 531 ' for performing the steps of the method according to the invention, ie code that can be read by a processor such as 510, which when executed by the computing device causes the computing device Perform the various steps in the method described above.

"an embodiment," or "an embodiment," or "an embodiment," In addition, it is noted that the phrase "in one embodiment" is not necessarily referring to the same embodiment.

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

In addition, it should be noted that the language used in this specification is primarily for the purpose of readability and teaching. It is chosen, rather than chosen to explain or define the subject matter of the invention. Therefore, many modifications and changes will be apparent to those skilled in the art without departing from the scope of the invention. The disclosure of the present invention is intended to be illustrative, and not restrictive, and the scope of the invention is defined by the appended claims.

Claims

A multimedia data encryption method includes:

Obtaining multimedia data to be transmitted;

Dividing the multimedia data into a plurality of multimedia data units;

Encrypting the plurality of multimedia data units separately by using a preset encryption rule;

The encrypted plurality of multimedia data units are sent to the client.
The multimedia data encryption method according to claim 1, wherein the method further comprises:

Generating an encryption key corresponding to the preset encryption rule; or

Receiving an encryption key corresponding to the preset encryption rule sent by the external device.
The multimedia data encryption method according to claim 2, wherein the step of dividing the multimedia data into a plurality of multimedia data units further comprises:

The multimedia data is divided into a plurality of multimedia frame data according to a preset rule.
The multimedia data encryption method according to claim 3, wherein the step of separately encrypting the plurality of multimedia data units by a preset encryption rule further comprises:

The plurality of multimedia frame data are separately encrypted by preset symmetric encryption rules and the encryption key.
The multimedia data encryption method according to claim 4, wherein after the dividing the multimedia data into a plurality of multimedia frame data according to a preset rule, the method further comprises:

And adjusting a position order of the plurality of multimedia frame data in the multimedia data according to a preset sorting rule.
The multimedia data encryption method according to claim 5, wherein the step of transmitting the encrypted plurality of multimedia data units to the client further comprises:

The encrypted plurality of multimedia frame data after the adjustment order is sent to the client.
The multimedia data encryption method according to claim 4, wherein the method further comprises: before the encrypting the plurality of multimedia frame data by using a preset symmetric encryption rule and the encryption key, the method further comprising:

Obtaining the original serial number of each multimedia frame data;

And generating, according to the encryption key and the original sequence number of each of the multimedia frame data, a key corresponding to each of the multimedia frame data.
The multimedia data encryption method according to claim 7, wherein the step of separately encrypting the plurality of multimedia frame data by using a preset symmetric encryption rule and the encryption key further comprises:

The plurality of multimedia frame data are separately encrypted by a key corresponding to each of the multimedia frame data.
The multimedia data encryption method according to claim 2, wherein after the transmitting the encrypted plurality of multimedia data units to the client, the method further comprises:

Sending the encryption key to the client, the encryption key is used by the client to decrypt the encrypted plurality of multimedia data units.
The multimedia data encryption method according to any one of claims 1 to 9, wherein the multimedia data is video data or audio data.
A multimedia data encryption device includes:

An acquiring unit, configured to acquire multimedia data to be transmitted;

a dividing unit, configured to divide the multimedia data acquired by the acquiring unit into a plurality of multimedia data units;

An encryption unit, configured to encrypt, by using a preset encryption rule, a plurality of multimedia data units divided by the dividing unit;

And a sending unit, configured to send the multiple multimedia data units encrypted by the encryption unit to the client.
The multimedia data encryption device of claim 11, wherein the device further comprises:

a generating unit, configured to generate an encryption key corresponding to the preset encryption rule;

The receiving unit is configured to receive an encryption key corresponding to the preset encryption rule sent by the external device.
The multimedia data encryption device according to claim 12, wherein

The dividing unit is specifically configured to divide the multimedia data into multiple multimedia frame data according to a preset rule.
The multimedia data encryption device according to claim 13, wherein

The encryption unit is specifically configured to separately encrypt the plurality of multimedia frame data by using a preset symmetric encryption rule and the encryption key.
The multimedia data encryption device of claim 14, wherein the device further comprises:

And an adjusting unit, configured to adjust a position sequence of the plurality of multimedia frame data in the multimedia data according to a preset sorting rule.
The multimedia data encryption device according to claim 15, wherein

The sending unit is specifically configured to send the encrypted multiple multimedia frame data after the adjustment sequence to the client.
The multimedia data encryption device according to claim 14, wherein

The acquiring unit is further configured to acquire an original serial number of each multimedia frame data;

The generating unit is further configured to respectively generate a key corresponding to each of the multimedia frame data according to the encryption key and an original sequence number of each multimedia frame data.
The multimedia data encryption device according to claim 17, wherein

The encryption unit has a function for separately encrypting the plurality of multimedia frame data by using a key corresponding to each of the multimedia frame data.
The multimedia data encryption device according to claim 12, wherein

The sending unit is further configured to send the encryption key to the client, where the encryption key is used by the client to decrypt the encrypted plurality of multimedia data units.
The multimedia data encryption device according to any one of claims 11-18, wherein the multimedia data is video data or audio data.
A computer program comprising computer readable code, when the computer readable code is run on a computing device, causing the computing device to perform the multimedia data encryption method of any one of claims 1 to 10.
A computer readable medium storing the computer program of claim 21.