CN106161383A - A kind of multimedia data encryption, the method and device of deciphering - Google Patents
A kind of multimedia data encryption, the method and device of deciphering Download PDFInfo
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Abstract
The invention provides the method and device of a kind of multimedia data encryption, deciphering, encryption method therein specifically includes: uses secondary key to be encrypted multi-medium data, is encrypted close stream accordingly；Use this secondary key of one-level double secret key to be encrypted, transmitted key accordingly；It is the close stream of this encryption and this transmission key due to be transmitted in a network, and this one-level key as decruption key is transmitted the most in a network, it is thus able to guarantee the safety that multi-medium data transmits in a network, and then solves the problem that multi-medium data is stolen or distorts；Further, the present invention uses secondary key to be encrypted multi-medium data and uses one-level double secret key secondary key to be encrypted, by increasing capacitance it is possible to increase encrypt the difficulty that close stream is cracked, therefore, it is possible to improve the safety of multi-medium data transmission further.
Description
Technical field
The present embodiments relate to networking technology area, particularly relate to a kind of multimedia data encryption, solution
Close method and device.
Background technology
In the modern life, network technology brings serious threat, a lot of security information quilts to the secrecy of the network information
Other people utilize network to steal so that country and personal information security take a bath, and therefore, it is right to use
The encrypted work of network traffic is the most increasingly valued by the people.
The encryption method generally used in prior art is: secure cryptographic algorithm, it uses DES (data
Encryption standard, Data Encryption Standard) etc. cipher mode multi-medium data is encrypted,
Video file is regarded as common data file by this secure cryptographic algorithm, does not consider the form of video file,
Change original information data by DES algorithm, there is the advantage that safety is higher.
But, the encryption key that above-mentioned secure cryptographic algorithm obtains directly have in the transmitting procedure of network by
The possibility of hacker attacks (as implanted wooden horse), causes this secure cryptographic algorithm to be cracked, and then causes many
The encryption key of media data is tampered or steals.
Summary of the invention
The embodiment of the invention discloses the method and device of a kind of multimedia data encryption, deciphering, to solve
The problem that in existing encryption method, encryption key may be tampered or steal.
In order to solve the problems referred to above, a kind of method that the invention provides multimedia data encryption, described side
Method includes:
Use secondary key that multi-medium data is encrypted, encrypted close stream accordingly；
Use secondary key described in one-level double secret key to be encrypted, transmitted key accordingly；
The close stream of described encryption and described transmission key is sent to receiving terminal；
Preferably, at described employing secondary key, multi-medium data is encrypted, is encrypted accordingly
Secondary key described in the step of close stream and described employing one-level double secret key is encrypted, and is transmitted accordingly
Before the step of key, described method also includes:
Described secondary key is timed renewal；
Multi-medium data is encrypted by described employing secondary key, is encrypted the step of close stream accordingly
Suddenly, specially use up-to-date secondary key that multi-medium data is encrypted, encrypted close accordingly
Stream；
Secondary key described in described employing one-level double secret key is encrypted, and is transmitted key step accordingly
Suddenly, specifically, use up-to-date secondary key described in one-level double secret key to be encrypted, passed accordingly
Defeated key；
Preferably, described send the close stream of described encryption and the step of described transmission key to receiving terminal, including:
Sending multi-medium data bag to described receiving terminal, wherein, described multi-medium data bag includes: described
Encrypt close stream and described transmission key；
Preferably, described one-level key is the key inputted by serial ports.
On the other hand, present invention also offers the decryption method of a kind of multi-medium data, described method includes:
Receive and encrypt close stream and transmission key；
Use transmission key described in local one-level double secret key to be decrypted, obtain decruption key；
Use described decruption key stream close to described encryption to be decrypted, obtain described multi-medium data；
Preferably, described reception encrypts close stream and the step of transmission key, including:
Receiving multi-medium data bag, wherein, described multi-medium data bag includes: the close stream of described encryption and institute
State transmission key；
Preferably, the one-level key of described this locality is the key inputted by serial ports.
Another further aspect, present invention also offers the encryption device of a kind of multi-medium data, and described device includes:
Close stream encryption module, is used for using secondary key to be encrypted multi-medium data, obtains corresponding
Encrypt close stream；
Cipher key encryption block, is used for using secondary key described in one-level double secret key to be encrypted, and obtains corresponding
Transmission key；And
Sending module, for sending the close stream of described encryption and described transmission key to receiving terminal；
Preferably, described device also includes:
More new module, for using secondary key to add multi-medium data in described close stream encryption module
Close, encrypted the operation of close stream accordingly and described cipher key encryption block is used described in one-level double secret key two
Level key is encrypted, and before being transmitted the operation of key accordingly, it is fixed to carry out described secondary key
Shi Gengxin；
The most described close stream encryption module, specifically for using up-to-date secondary key to carry out multi-medium data
Encryption, is encrypted close stream accordingly；
Described cipher key encryption block, specifically for using up-to-date secondary key described in one-level double secret key to carry out
Encryption, is transmitted key accordingly.
Another aspect, present invention also offers the deciphering device of a kind of multi-medium data, and described device includes:
Receiver module, is used for receiving the close stream of encryption and transmission key；
Cipher key decryption block, for using transmission key described in local one-level double secret key to be decrypted,
To decruption key；And
Close stream deciphering module, is used for using described decruption key stream close to described encryption to be decrypted, obtains
Described multi-medium data.
Compared with prior art, the present invention includes advantages below:
The present invention uses secondary key to be encrypted multi-medium data, is encrypted close stream accordingly；Adopt
It is encrypted with this secondary key of one-level double secret key, is transmitted key accordingly；Owing to entering in a network
Row transmission is the close stream of this encryption and this transmission key, and this one-level key as decruption key does not exist
Network is transmitted, therefore, it is possible to guarantee the safety that multi-medium data transmits in a network, and then solves
The problem that multi-medium data of having determined is stolen or distorts；Further, the present invention uses secondary key to multimedia
Data are encrypted and use one-level double secret key secondary key to be encrypted, by increasing capacitance it is possible to increase encrypt close stream and broken
The difficulty solved, therefore, it is possible to improve the safety of multi-medium data transmission further.
Accompanying drawing explanation
Fig. 1 is the steps flow chart of the embodiment of the method one of a kind of multimedia data encryption that the present invention provides
Figure；
Fig. 2 is the steps flow chart of the embodiment of the method three of a kind of multi-medium data deciphering that the present invention provides
Figure；
Fig. 3 is that a kind of multimedia data encryption of providing of the present invention, the principle of decryption method embodiment four are shown
It is intended to；
Fig. 4 is multimedia data encryption, the method for deciphering during a kind of video conference that the present invention provides
The flow chart of embodiment five；
Fig. 5 is the structural representation of the device embodiment one of a kind of multimedia data encryption that the present invention provides
Figure；
Fig. 6 is that the structure of the device embodiment two of a kind of multi-medium data key updating that the present invention provides is shown
It is intended to；And
Fig. 7 is the structural representation of the device embodiment three of a kind of multi-medium data deciphering that the present invention provides
Figure.
Detailed description of the invention
Understandable for enabling the above-mentioned purpose of the present invention, feature and advantage to become apparent from, below in conjunction with attached
The present invention is further detailed explanation with detailed description of the invention for figure.
Under internet environment, multi-medium data likely can be intercepted and captured by hacker in network transmission process,
Thus cause being stolen or distorting of this multi-medium data, such as, in video conference, audio/video flow exists
Network may be intercepted and captured by hacker thus be reduced out conference content, particularly with for concerning security matters meeting this
The safety of its conference content transmission will be had a strong impact on.
A kind of method that the invention provides multimedia data encryption, uses secondary key to multi-medium data
It is encrypted, is encrypted close stream accordingly；The one-level double secret key inputted by RS232 serial ports by outside
This secondary key is encrypted, and is transmitted key accordingly；It is this due to be transmitted in a network
Encrypt close stream and this transmission key, and this one-level key as decruption key passes the most in a network
Defeated, therefore, it is possible to guarantee the safety that multi-medium data transmits in a network, and then solve multimedia number
According to the problem being stolen or distort；Further, the present invention uses secondary key to be encrypted multi-medium data
It is encrypted with using one-level double secret key secondary key, by increasing capacitance it is possible to increase encrypt the difficulty that close stream is cracked, because of
This can improve the safety of multi-medium data transmission further.
With reference to Fig. 1, it is shown that the step of the embodiment of the method one of a kind of multimedia data encryption of the present invention
Flow chart, specifically may include steps of:
Multi-medium data is encrypted by step 101, employing secondary key, is encrypted close stream accordingly；
Before multi-medium data transmits in a network, can use secondary key that described multi-medium data is entered
Row encryption, is encrypted close stream accordingly, and wherein, the close stream of described encryption refers specifically to through described two grades
Multi-medium data after key encryption.
In implementing, described secondary key can by FPGA (field programmable gate array,
Filed-Programmable Gate Array) individually randomly generate inside encrypting module.
The mode that described multi-medium data is encrypted by described secondary key specifically may include that 3DES
Encryption or AES encryption etc..
Wherein, des encryption algorithm is a kind of block algorithm using key to encrypt, and they can be by 64 (8
Byte) plaintext input block become the ciphertext IOB of 64, the key of use is also 64.3DES
Also known as Triple DES, it is the common name of triple DEA block encryption, is the one of des encryption algorithm
Kind, it is with DES as basic module, designs block encryption algorithm by combination group technology, use
The data key of 3 56 (7 bytes) carries out Tertiary infilling.
AES (Advanced Encryption Standard, AdcancedEncryptionStandard) AES is a kind of district
Block encryption standard, use symmetric block ciphers system, AES encryption algorithm based on arrangement and in-place computation,
Can use 128,192 and 256 is key, and 128 (16 byte) block encryption data.
It is appreciated that above-mentioned 3DES encryption or AES encryption are intended only as example, it practice, this area
Technical staff can use arbitrary AES according to actual needs, and the embodiment of the present invention is to using two grades
The concrete cipher mode that double secret key multi-medium data is encrypted is not any limitation as.
Secondary key described in step 102, employing one-level double secret key is encrypted, and is transmitted close accordingly
Key；
In implementing, can use outside by RS232 serial ports or the one of the input of RS485 serial ports
Secondary key described in level double secret key is encrypted, and is transmitted key accordingly, and wherein, described transmission is close
Key refers specifically to the secondary key after one-level key is encrypted.
It is appreciated that above-mentioned RS232 serial ports or RS485 serial ports are intended only as example, it practice, this
Skilled person can use the serial ports of any kind according to actual needs, and the embodiment of the present invention is to outside
The concrete serial ports that the one-level double secret key secondary key inputted by serial ports is encrypted is not any limitation as.
In actual applications, the cipher mode that secondary key described in described one-level double secret key is encrypted is concrete
3DES encryption can be included or use AES encryption etc..
Step 103, send the close stream of described encryption and described transmission key to receiving terminal.
At described employing secondary key, multi-medium data is encrypted, obtains encrypting close stream and described employing
One-level double secret key secondary key is encrypted, and after obtaining transmitting key, sends described encryption to receiving terminal
Key and described transmission key.
The present invention have employed twice 3DES or AES encryption, i.e. use secondary key to multi-medium data
It is encrypted and uses one-level double secret key secondary key to be encrypted, drastically increase current multimedia number
According to the safety transmitted in a network, need about 232 groups according to being currently known the optimal attack to 3DES
Known 2113,290 des encryptions and 288 internal memories can crack in plain text, need
Expending huge operand, namely add the difficulty that the close stream of encryption is cracked, therefore the present invention uses two
Level double secret key multi-medium data is encrypted and uses one-level double secret key secondary key to be encrypted, it is possible to enter
One step improves the safety of multi-medium data transmission.
In sum, use secondary key that multi-medium data is encrypted, encrypted close stream accordingly；
Use one-level double secret key secondary key to be encrypted, transmitted key accordingly；Send to receiving terminal and add
Close stream and transmission key.The present invention by transmit in a network be encrypted after the close stream of encryption that obtains
With transmission key, and one-level key can be inputted by RS232 serial ports or RS485 serial ports by outside,
Be transmitted the most in a network, then hacker encrypts close stream and the transmission deciphering that obtains of key is close by cracking
Key, can not crack this multi-medium data, because being unable to steal or distort correct multi-medium data,
Thus the present invention is able to ensure that multi-medium data safe transmission in a network.
Specifically discuss with embodiment below and secondary key be timed update method:
For the renewal of key in prior art, it is based on the ciphering multimedia suspecting certain logic channel
In the case of data are given away secrets, any receiving terminal receiving this multi-medium data all can pass through Encryption
Update Request (the encrypting more newly requested) key that command request is new；Transmitting terminal receives encryption more
After newly requested, more new information can be encrypted to the receiving terminal transmission sending encryption more newly requested
(EncryptionUpdate), this encryption more new information comprises H.235 key, be to use ASN.1 to compile
Code, for opaque byte information string, have employed new password and AES, and (real by RTP
Time host-host protocol, Real-time Transport Protocol) notice receiving terminal newly-installed for key reconsul
Password and data type；Sending should be as early as possible after the more newly requested terminal of encryption receives this encryption more new information
Use new key on logical channels.In the process, key is new password and algorithm are in the mistake sent
Journey may be intercepted and captured by hacker and cause this multi-medium data to be tampered or steal, and if receiving terminal do not have
Have and use new key the most on logical channels, may result in original multi-medium data by
Distort or steal.
For this kind of situation, the embodiment of the present invention two have employed the method for timing renewal secondary key and prevents
Multi-medium data is tampered or steals, and is specifically as follows:
At described employing secondary key, multi-medium data is encrypted, is encrypted the step of close stream accordingly
Rapid and described employing one-level double secret key secondary key is encrypted, transmitted accordingly key step it
Before, described method can also include:
Described secondary key is timed renewal；
Once updating described secondary key section at set intervals, described one-level double secret key is up-to-date
Secondary key is encrypted, and the described secondary key being encrypted described multi-medium data is also described
Up-to-date secondary key；
Then step 101 is specifically as follows, and uses up-to-date secondary key to be encrypted multi-medium data,
Encrypted close stream accordingly；
Accordingly, step 102 is specifically as follows, and uses up-to-date secondary key described in one-level double secret key to enter
Row encryption, is transmitted key accordingly.
The present invention is timed renewal to secondary key, it is ensured that enter using one-level double secret key secondary key
During multi-medium data is encrypted by row encryption and employing secondary key, it is ensured that secondary key
Safety, has further assured that the safe transmission of multi-medium data.
The decryption method of multi-medium data is specifically discussed below with embodiment:
With reference to Fig. 2, it is shown that the step of the embodiment of the method three of a kind of multi-medium data deciphering of the present invention
Flow chart, specifically may include steps of:
Step 201, reception encrypt close stream and transmission key；
The close stream of encryption of receiving terminal receiving end/sending end transmission and transmission key.
Step 202, use and transmit key described in local one-level double secret key and be decrypted, obtain deciphering close
Key；
Use and transmit described in the one-level double secret key of RS232 serial ports or RS485 input locally by outside
Key is decrypted, and obtains described decruption key, wherein, described decruption key refer to in ciphering process
Corresponding described up-to-date secondary key.
Described in the described one-level double secret key passing through RS232 serial ports or the input of RS485 serial ports locally by outside
The mode that transmission key is decrypted, can be based on secondary key described in above-mentioned employing described one-level double secret key
The cipher mode used when being encrypted is all 3DES or AES encryption etc..
Step 203, use described decruption key stream close to described encryption to be decrypted, obtain described many matchmakers
Volume data.
When the described one-level double secret key institute inputted by RS232 serial ports or RS485 serial ports locally by outside
State transmission key to be decrypted, after obtaining described decruption key, use described decruption key to add described
Close stream is decrypted, and then obtains corresponding multi-medium data.
The mode that described decruption key stream close to described encryption is decrypted, is based on above-mentioned employing described two
The cipher mode that multi-medium data described in level double secret key is used when being encrypted is all 3DES or AES
Encryption etc..
The principle of multimedia data encryption, decryption method is specifically discussed below with embodiment:
With reference to Fig. 3, it is shown that a kind of multimedia data encryption of the present invention, decryption method embodiment four
Principle schematic, specifically may include that
Send to receiving terminal to encrypt close stream and transmit key and specifically include:
Sending multi-medium data bag to described receiving terminal, wherein, described multi-medium data bag includes: described
Encrypt close stream and described transmission key.
At the close stream of described encryption and described transmission key during sending to described receiving terminal, it is by institute
State and encrypt close stream and the described transmission key form as an overall multi-medium data bag to described reception
End send, wherein, described transmission key may be located in the packet header of described multi-medium data bag, described in add
Close stream may be located in the inclusion of described multi-medium data bag.
Such as, E K1 (E K2 (1)) be in first multi-medium data bag with k1 to K2 (1)
Carry out 3DES or AES encryption, transmitted key accordingly；Wherein, k1 refers to be passed through by outside
The one-level key of RS232 serial ports input, K2 (1) refers to be encrypted mould in the T1 moment by each FPGA
The up-to-date secondary key individually randomly generated inside block；
E K2 (1) (code stream) be the T1 moment with k2 to first multimedia volume data bag in corresponding
Multi-medium data is encrypted, and is encrypted close stream accordingly.
……
E K1 (E K2 (n)) is to carry out K2 (n) with k1 in the n-th multi-medium data bag
3DES or AES encryption, transmitted key accordingly, and K2 (n) refers in the Tn moment by each
The internal up-to-date secondary key individually produced at any time of FPGA encrypting module；
EK2 (n) (code stream) be in the Tn moment with the k2 in the n-th multi-medium data bag to accordingly
Multi-medium data is encrypted, and is encrypted close stream accordingly.
Transmitting terminal can send multiple multi-medium data bags to receiving terminal, in each multi-medium data bag simultaneously
Comprise the close stream of respective encryption and transmission key.
Described receiving terminal receives described transmitting terminal and sends the plurality of multi-medium data bag of coming, described reception
Stream close to described encryption and described transmission key is held to be decrypted.
Described multi-medium data bag includes and encrypts close stream and the corresponding transmission of stream close with described encryption
Key, first, uses local outside RS232 serial ports or the input of RS485 serial ports to described transmission key
One-level key be decrypted, obtain corresponding decruption key, described decruption key correspond to encryption time
Used described up-to-date secondary key；Then use described decruption key to same multi-medium data
The close stream of encryption in bag is decrypted, and then obtains corresponding multi-medium data.
Such as, Dk1 (Ek1 (k2 (1))) is close to transmission for using k1 in first multi-medium data bag
Key Ek1 (k2 (1)) is decrypted, and obtains corresponding decruption key k2 (1)；Herein, k1 refers to
The outside one-level key inputted by RS232 serial ports in receiving terminal this locality；
Dk2 (code stream) is for using k2 to be decrypted encrypting close stream in first multi-medium data bag,
Obtain corresponding multi-medium data.
……
Dk1 (Ek1 (k2 (n))) is for using k1 to carry out transmission key in the n-th multi-medium data bag
Deciphering, obtains corresponding decruption key；
Dk2 (code stream) is to be decrypted encrypting close stream for the n-th multi-medium data bag k2,
To corresponding multi-medium data.
In sum, the present invention uses secondary key to be encrypted multi-medium data, uses one-level key
Described secondary key is encrypted, have employed twice 3DES or AES encryption；And described one-level is close
Key is obtained by RS232 serial ports or the input of RS485 serial ports by outside, carries out the most in a network
Transmission such that it is able to ensure multi-medium data safe transmission in a network；Further, the present invention is directed to one
Individual multi-medium data bag is transmitted in a network, includes corresponding multi-medium data and transmission key
(i.e. decruption key), even if the breaking cryptographic keys obtained by hack, can not obtain this multimedia number
According to, further ensure the safe transmission of multi-medium data.
Below by concrete illustrating the multimedia data encryption of the present invention, the reality of decryption method should
With:
With reference to Fig. 4, it is shown that multimedia data encryption, deciphering during a kind of video conference of the present invention
The flow chart of embodiment of the method five, specifically may include that
Regarding in networking conference system at one, Set Top Box (i.e. terminal) first should be built with depending on networked server
Vertical network connects, and then receives the audio, video data of its other Set Top Boxes forwarded from server, and to sound
Video data carries out encoding and decoding, also sends local photographic head and mic (mike, Microphone) simultaneously
Gather the coding audio/video data of image；The audio, video data sent depending on networked server receiving set up box,
And this audio, video data is carried out mixed processing, obtain corresponding network flow, and this regards connection to be sent to access
All Set Top Boxes of network server；Set Top Box receives and regards the network flow that networked server sends, and by this net
Network stream is processed into corresponding audio frequency and video, and then shows on the display screen of terminal.
In actual applications, audio, video data is encrypted, the idiographic flow of deciphering is:
Step S1, audio, video data is encrypted；
In regarding networking conference system, secondary key can be carried out by the encryption equipment that transmitting terminal Set Top Box above connects
The renewal of timing, and the audio, video data gathering the local photographic head sent and mic is used up-to-date
Secondary key is encrypted, and obtains corresponding audio, video data source, and this encryption equipment uses outside passing through
Up-to-date secondary key described in the one-level double secret key of RS232 serial ports or the input of RS485 serial ports is encrypted,
Obtain corresponding transmitting terminal transmission key；Described transmitting terminal Set Top Box is by described audio, video data source and described
Transmitting terminal transmission key is integrated and is obtained an audio, video data bag, and is sent to regarding networked server.
Described audio, video data bag is processed by step S2, videoconference server, obtains corresponding
Network flow；
Described regarding the networked server described audio, video data bag of reception, the encryption above connect depending on networked server
Chance is decrypted process to this audio, video data bag, by depending on passing through outside networked server this locality
The described transmitting terminal transmission key that the one-level double secret key of RS232 serial ports or the input of RS485 serial ports receives enters
Row deciphering, obtains corresponding decruption key, and described decruption key is for entering described up-to-date secondary key
Row deciphering, obtains corresponding audio, video data source；
Depending on networked server, the described audio, video data source obtained after deciphering is carried out mixed processing, obtain phase
The network flow answered；
After obtaining described network flow, the encryption equipment above accessed depending on networked server is again to described network
Stream is encrypted, and uses up-to-date secondary key to be encrypted described network flow, obtains corresponding
Encrypt close stream, use to regard and gone here and there by RS232 serial ports or RS485 by outside outside networked server this locality
Up-to-date secondary key described in the one-level double secret key of mouth input is encrypted, and obtains regarding accordingly the Internet services
Device transmission key；Depending on networked server, close for described encryption stream is whole regarding networked server transmission key with described
The network flow bag being integrated, and described network flow bag is sent to the Set Top Box of described receiving terminal.
Step S3, described network flow bag is decrypted.
The Set Top Box of described receiving terminal receives described network flow bag, and passes through by outside receiving terminal this locality
It is described regarding networked server transmission that the one-level double secret key of RS232 serial ports or the input of RS485 serial ports receives
Key is decrypted, and obtains corresponding decruption key, and described decruption key is for flowing to described encryption is close
Row deciphering, and then obtain the corresponding audio, video data sent with transmitting terminal.
Such as, holding the video conference of 8 terminals in depending on networking, these 8 terminals all access and regard
Networked server, connects an encryption equipment before each terminal, the encryption equipment of each terminal can to video bag and
Audio packet data field carries out encryption and decryption.
Present invention employs the mode of twice 3DES or AES encryption, it is ensured that multi-medium data is at network
In the safety that is transmitted.
The structure of multimedia data encryption device is specifically discussed below with embodiment:
With reference to Fig. 5, it is shown that the structure of the device embodiment one of a kind of multimedia data encryption of the present invention
Schematic diagram, specifically may include that
Close stream encryption module 501, is used for using secondary key to be encrypted multi-medium data, obtains phase
The close stream of encryption answered；
Cipher key encryption block 502, is used for using secondary key described in one-level double secret key to be encrypted, obtains
Transmit key accordingly；
Sending module 503, for sending the close stream of described encryption and described transmission key to receiving terminal.
This embodiment describes multimedia data encryption device, transmit it in a network at multi-medium data
Before, described close stream encryption module 501, state secondary key by employing and multi-medium data is encrypted,
Encrypted close stream accordingly；Described cipher key encryption block 502, outside by RS232 serial ports by using
Or RS485 serial ports input one-level double secret key described in secondary key be encrypted transmitted accordingly close
Key；Transmitting terminal using close for described encryption stream and described transmission key as the shape of an overall multi-medium data bag
Formula, wherein, described transmission key may be located in the packet header of described multi-medium data bag, and described encryption is close
Stream may be located in the inclusion of described multi-medium data bag, and by described sending module 503 to receiving terminal
Send described multi-medium data bag.
By using secondary key multi-medium data is encrypted and uses one-level double secret key in the present invention
Secondary key is encrypted, it is ensured that multi-medium data safe transmission in a network.
The description of the embodiment of the method six of a kind of multimedia data encryption that the present invention provides, with embodiment
In one, the description process for method is identical, can be specifically described by the description of preceding method,
This does not repeats, cross-referenced.
The apparatus structure of key updating is specifically discussed below with embodiment:
With reference to Fig. 6, it is shown that the device embodiment two of a kind of multi-medium data key updating of the present invention
Structural representation, specifically may include that
More new module 601, for being timed renewal to secondary key；
Close stream encryption module 602, for using up-to-date secondary key that multi-medium data is encrypted,
Encrypted close stream accordingly；
Cipher key encryption block 603, for using secondary key up-to-date described in one-level double secret key to be encrypted,
Transmitted key accordingly；
Sending module 604, for sending the close stream of described encryption and described transmission key to receiving terminal.
Before described close stream encryption module 602 and described cipher key encryption block 603, described device also wraps
Include: described more new module 601, the most described secondary key is once updated, then
That use in the most described close stream encryption module 602 and described cipher key encryption block 603 is all up-to-date two
Level key.
The present invention, by updating the timing of secondary key, has further assured that multi-medium data is at network
In safe transmission.
The description of the embodiment of the method seven of a kind of multimedia data encryption that the present invention provides, with embodiment
In two, the description process for method is identical, can be specifically described by the description of preceding method,
This does not repeats, cross-referenced.
Specifically discuss with embodiment below multi-medium data deciphering device structure:
With reference to Fig. 7, it is shown that the structure of the device embodiment three of a kind of multi-medium data deciphering of the present invention
Schematic diagram, specifically may include that
Receiver module 701, is used for receiving the close stream of encryption and transmission key；
Cipher key decryption block 702, for using transmission key described in local one-level double secret key to be decrypted,
Obtain decruption key；
Close stream deciphering module 703, is used for using described decruption key stream close to described encryption to be decrypted,
Obtain described multi-medium data.
The close stream of described encryption of the described receiver module 701 receiving end/sending end transmission of receiving terminal and described transmission
Key；The outside being used this locality by cipher key decryption block 702 is gone here and there by RS232 serial ports or RS485
Transmit key described in the one-level double secret key of mouth input to be decrypted, obtain corresponding decruption key；And lead to
Crossing described close stream deciphering module 703 uses described decruption key stream close to described encryption to be decrypted, and obtains
Corresponding multi-medium data.
In actual applications, described cipher key decryption block 702 and described close stream deciphering module 703 are used
Manner of decryption, when being based on the described secondary key of above-mentioned employing, described multi-medium data to be encrypted and
The cipher mode using secondary key described in described one-level double secret key to be used when being encrypted is all 3DES
Or AES encryption etc..
The description of the embodiment of the method eight of a kind of multi-medium data deciphering that the present invention provides, with embodiment
In three, the description process for method is identical, can be specifically described by the description of preceding method,
This does not repeats, cross-referenced.
In sum, the embodiment of the present invention a kind of method based on multimedia data encryption, use two grades close
Multi-medium data is encrypted by key, is encrypted close stream accordingly；Defeated by RS232 serial ports by outside
This secondary key of one-level double secret key entered is encrypted, and is transmitted key accordingly；Due in a network
Be transmitted is the close stream of this encryption and this transmission key, and as decruption key this one-level key not
It is transmitted in a network, therefore, it is possible to guarantee the safety that multi-medium data transmits in a network, and then
Solve the problem that multi-medium data is stolen or distorts；Further, the present invention uses secondary key to many matchmakers
Volume data is encrypted and uses one-level double secret key secondary key to be encrypted, by increasing capacitance it is possible to increase encrypt close stream quilt
The difficulty cracked, therefore, it is possible to improve the safety of multi-medium data transmission further.
For device embodiment, due to itself and embodiment of the method basic simlarity, so the ratio described
Relatively simple, relevant part sees the part of embodiment of the method and illustrates.
Each embodiment in this specification all uses the mode gone forward one by one to describe, and each embodiment stresses
Be all the difference with other embodiments, between each embodiment, identical similar part sees mutually
?.
Those skilled in the art are it should be appreciated that the embodiment of the embodiment of the present application can be provided as method, dress
Put or computer program.Therefore, the embodiment of the present application can use complete hardware embodiment, completely
Software implementation or the form of the embodiment in terms of combining software and hardware.And, the embodiment of the present application
Can use and can be situated between with storage at one or more computers wherein including computer usable program code
The upper computer journey implemented of matter (including but not limited to disk memory, CD-ROM, optical memory etc.)
The form of sequence product.
In a typical configuration, described computer equipment includes one or more processor
(CPU), input/output interface, network interface and internal memory.Internal memory potentially includes computer-readable medium
In volatile memory, the shape such as random access memory (RAM) and/or Nonvolatile memory
Formula, such as read only memory (ROM) or flash memory (flash RAM).Internal memory is computer-readable medium
Example.Computer-readable medium includes removable media permanent and non-permanent, removable and non-
Information storage can be realized by any method or technology.Information can be computer-readable instruction,
Data structure, the module of program or other data.The example of the storage medium of computer includes, but
Be not limited to phase transition internal memory (PRAM), static RAM (SRAM), dynamic random are deposited
Access to memory (DRAM), other kinds of random access memory (RAM), read only memory
(ROM), Electrically Erasable Read Only Memory (EEPROM), fast flash memory bank or other in
Deposit technology, read-only optical disc read only memory (CD-ROM), digital versatile disc (DVD) or other
Optical storage, magnetic cassette tape, tape magnetic rigid disk storage other magnetic storage apparatus or any its
His non-transmission medium, can be used for the information that storage can be accessed by a computing device.According to herein
Defining, computer-readable medium does not include the computer readable media (transitory media) of non-standing,
Data signal and carrier wave such as modulation.
The embodiment of the present application is with reference to the method according to the embodiment of the present application, terminal unit (system) and meter
The flow chart of calculation machine program product and/or block diagram describe.It should be understood that can be by computer program instructions
Each flow process in flowchart and/or block diagram and/or square frame and flow chart and/or square frame
Flow process in figure and/or the combination of square frame.Can provide these computer program instructions to general purpose computer,
The processor of special-purpose computer, Embedded Processor or other programmable data processing terminal equipment is to produce
One machine so that performed by the processor of computer or other programmable data processing terminal equipment
Instruction produce for realizing at one flow process of flow chart or multiple flow process and/or one square frame of block diagram or
The device of the function specified in multiple square frames.
These computer program instructions may be alternatively stored in and computer or other programmable datas can be guided to process
In the computer-readable memory that terminal unit works in a specific way so that be stored in this computer-readable
Instruction in memorizer produces the manufacture including command device, and this command device realizes flow chart one
The function specified in flow process or multiple flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded into computer or other programmable data processing terminals set
Standby upper so that on computer or other programmable terminal equipment, to perform sequence of operations step in terms of producing
The process that calculation machine realizes, thus the instruction performed on computer or other programmable terminal equipment provides and uses
In realizing in one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame
The step of the function specified.
Although having been described for the preferred embodiment of the embodiment of the present application, but those skilled in the art being once
Know basic creative concept, then these embodiments can be made other change and amendment.So,
Claims are intended to be construed to include preferred embodiment and fall into the institute of the embodiment of the present application scope
There are change and amendment.
Finally, in addition it is also necessary to explanation, in this article, the relation art of such as first and second or the like
Language is used merely to separate an entity or operation with another entity or operating space, and not necessarily
Require or imply relation or the order that there is any this reality between these entities or operation.And
And, term " includes ", " comprising " or its any other variant are intended to comprising of nonexcludability, from
And make to include that the process of a series of key element, method, article or terminal unit not only include that those are wanted
Element, but also include other key elements being not expressly set out, or also include for this process, side
The key element that method, article or terminal unit are intrinsic.In the case of there is no more restriction, by statement
The key element that " including one ... " limits, it is not excluded that including the process of described key element, method, thing
Product or terminal unit there is also other identical element.
A kind of multimedia data encryption, the method for deciphering and the dress above embodiment of the present invention provided
Putting, be described in detail, specific case used herein is to the principle of the present invention and embodiment
Being set forth, the explanation of above example is only intended to help to understand method and the core thereof of the present invention
Thought；Simultaneously for one of ordinary skill in the art, according to the thought of the present invention, concrete real
Executing and all will change in mode and range of application, in sum, this specification content should not be understood
For limitation of the present invention.
Claims (10)
1. the encryption method of a multi-medium data, it is characterised in that including:
Use secondary key that multi-medium data is encrypted, encrypted close stream accordingly；
Use secondary key described in one-level double secret key to be encrypted, transmitted key accordingly；
The close stream of described encryption and described transmission key is sent to receiving terminal.
Method the most according to claim 1, it is characterised in that at described employing secondary key pair
Multi-medium data is encrypted, and is encrypted step and the described employing one-level double secret key institute of close stream accordingly
Stating secondary key to be encrypted, before being transmitted the step of key accordingly, described method also includes:
Described secondary key is timed renewal；
Multi-medium data is encrypted by described employing secondary key, is encrypted the step of close stream accordingly
Suddenly, specially use up-to-date secondary key that multi-medium data is encrypted, encrypted close accordingly
Stream；
Secondary key described in described employing one-level double secret key is encrypted, and is transmitted key step accordingly
Suddenly, specifically, use up-to-date secondary key described in one-level double secret key to be encrypted, passed accordingly
Defeated key.
Method the most according to claim 1, it is characterised in that described described to receiving terminal transmission
Encrypt close stream and the step of described transmission key, including:
Sending multi-medium data bag to described receiving terminal, wherein, described multi-medium data bag includes: described
Encrypt close stream and described transmission key.
Method the most according to claim 1, it is characterised in that described one-level key is by string
The key of mouth input.
5. the decryption method of a multi-medium data, it is characterised in that including:
Receive and encrypt close stream and transmission key；
Use transmission key described in local one-level double secret key to be decrypted, obtain decruption key；
Use described decruption key stream close to described encryption to be decrypted, obtain described multi-medium data.
Method the most according to claim 5, it is characterised in that close stream and biography are encrypted in described reception
The step of defeated key, including:
Receiving multi-medium data bag, wherein, described multi-medium data bag includes: the close stream of described encryption and institute
State transmission key.
Method the most according to claim 5, it is characterised in that the one-level key of described this locality is
The key inputted by serial ports.
8. the encryption device of a multi-medium data, it is characterised in that including:
Close stream encryption module, is used for using secondary key to be encrypted multi-medium data, obtains corresponding
Encrypt close stream；
Cipher key encryption block, is used for using secondary key described in one-level double secret key to be encrypted, and obtains corresponding
Transmission key；And
Sending module, for sending the close stream of described encryption and described transmission key to receiving terminal.
Device the most according to claim 8, it is characterised in that described device also includes:
More new module, for using secondary key to add multi-medium data in described close stream encryption module
Close, encrypted the operation of close stream accordingly and described cipher key encryption block is used described in one-level double secret key two
Level key is encrypted, and before being transmitted the operation of key accordingly, it is fixed to carry out described secondary key
Shi Gengxin；
The most described close stream encryption module, specifically for using up-to-date secondary key to carry out multi-medium data
Encryption, is encrypted close stream accordingly；
Described cipher key encryption block, specifically for using up-to-date secondary key described in one-level double secret key to carry out
Encryption, is transmitted key accordingly.
10. the deciphering device of a multi-medium data, it is characterised in that including:
Receiver module, is used for receiving the close stream of encryption and transmission key；
Cipher key decryption block, for using transmission key described in local one-level double secret key to be decrypted,
To decruption key；And
Close stream deciphering module, is used for using described decruption key stream close to described encryption to be decrypted, obtains
Described multi-medium data.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510178631.7A CN106161383A (en) | 2015-04-15 | 2015-04-15 | A kind of multimedia data encryption, the method and device of deciphering |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510178631.7A CN106161383A (en) | 2015-04-15 | 2015-04-15 | A kind of multimedia data encryption, the method and device of deciphering |
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| CN106161383A true CN106161383A (en) | 2016-11-23 |
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| CN201510178631.7A Pending CN106161383A (en) | 2015-04-15 | 2015-04-15 | A kind of multimedia data encryption, the method and device of deciphering |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106658061A (en) * | 2016-12-06 | 2017-05-10 | 讯美科技股份有限公司 | Video data security encryption transmission method and system |
| CN107172461A (en) * | 2017-06-19 | 2017-09-15 | 武汉斗鱼网络科技有限公司 | A kind of video flowing method for authenticating and device |
| CN108989837A (en) * | 2017-08-25 | 2018-12-11 | 北京视联动力国际信息技术有限公司 | A kind of method and apparatus of picture interception |
| CN109005184A (en) * | 2018-08-17 | 2018-12-14 | 上海小蚁科技有限公司 | File encrypting method and device, storage medium, terminal |
| CN109413033A (en) * | 2018-09-03 | 2019-03-01 | 视联动力信息技术股份有限公司 | A kind of data transmission method and system based on view networking |
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| CN110381021A (en) * | 2019-06-13 | 2019-10-25 | 视联动力信息技术股份有限公司 | A kind of method, apparatus, electronic equipment and the storage medium of anti-rogue attacks |
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| CN110808969A (en) * | 2019-10-28 | 2020-02-18 | 网御安全技术（深圳）有限公司 | Data transmission method and system, electronic device and storage medium |
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| CN111654731A (en) * | 2020-07-07 | 2020-09-11 | 成都卫士通信息产业股份有限公司 | Key information transmission method and device, electronic equipment and computer storage medium |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101132414A (en) * | 2007-09-28 | 2008-02-27 | 中兴通讯股份有限公司 | Encryption method and system for key transmission in mobile multimedia broadcasting service |
| CN101621390A (en) * | 2008-07-01 | 2010-01-06 | 中兴通讯股份有限公司 | Protection method and system thereof for data download service in broadcast multicast |
| CN103986723A (en) * | 2014-05-28 | 2014-08-13 | 大唐移动通信设备有限公司 | Secret communication control and secret communication method and device |
-
2015
- 2015-04-15 CN CN201510178631.7A patent/CN106161383A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101132414A (en) * | 2007-09-28 | 2008-02-27 | 中兴通讯股份有限公司 | Encryption method and system for key transmission in mobile multimedia broadcasting service |
| CN101621390A (en) * | 2008-07-01 | 2010-01-06 | 中兴通讯股份有限公司 | Protection method and system thereof for data download service in broadcast multicast |
| CN103986723A (en) * | 2014-05-28 | 2014-08-13 | 大唐移动通信设备有限公司 | Secret communication control and secret communication method and device |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106658061A (en) * | 2016-12-06 | 2017-05-10 | 讯美科技股份有限公司 | Video data security encryption transmission method and system |
| CN107172461A (en) * | 2017-06-19 | 2017-09-15 | 武汉斗鱼网络科技有限公司 | A kind of video flowing method for authenticating and device |
| CN107172461B (en) * | 2017-06-19 | 2019-12-03 | 武汉斗鱼网络科技有限公司 | A kind of video flowing method for authenticating and device |
| CN108989837A (en) * | 2017-08-25 | 2018-12-11 | 北京视联动力国际信息技术有限公司 | A kind of method and apparatus of picture interception |
| CN110636031A (en) * | 2018-06-21 | 2019-12-31 | 视联动力信息技术股份有限公司 | Video conference data processing method and device |
| CN110636031B (en) * | 2018-06-21 | 2022-05-17 | 视联动力信息技术股份有限公司 | Video conference data processing method and device |
| CN109005184A (en) * | 2018-08-17 | 2018-12-14 | 上海小蚁科技有限公司 | File encrypting method and device, storage medium, terminal |
| CN109413033A (en) * | 2018-09-03 | 2019-03-01 | 视联动力信息技术股份有限公司 | A kind of data transmission method and system based on view networking |
| CN109862014A (en) * | 2019-02-14 | 2019-06-07 | 视联动力信息技术股份有限公司 | A kind of processing method and processing device regarding networking data |
| CN110061962B (en) * | 2019-03-11 | 2021-12-17 | 视联动力信息技术股份有限公司 | Method and device for transmitting video stream data |
| CN110061962A (en) * | 2019-03-11 | 2019-07-26 | 视联动力信息技术股份有限公司 | A kind of method and apparatus of video stream data transmission |
| CN110149497A (en) * | 2019-04-09 | 2019-08-20 | 视联动力信息技术股份有限公司 | A kind of view networked data transmission method, apparatus, system and readable storage medium storing program for executing |
| CN110381021A (en) * | 2019-06-13 | 2019-10-25 | 视联动力信息技术股份有限公司 | A kind of method, apparatus, electronic equipment and the storage medium of anti-rogue attacks |
| CN110808969A (en) * | 2019-10-28 | 2020-02-18 | 网御安全技术（深圳）有限公司 | Data transmission method and system, electronic device and storage medium |
| CN111372056A (en) * | 2020-03-26 | 2020-07-03 | 浙江大华技术股份有限公司 | Video data encryption and decryption processing method and device |
| CN111654731A (en) * | 2020-07-07 | 2020-09-11 | 成都卫士通信息产业股份有限公司 | Key information transmission method and device, electronic equipment and computer storage medium |
| CN113727058A (en) * | 2021-08-31 | 2021-11-30 | 成都卫士通信息产业股份有限公司 | Multimedia conference data processing method, system, equipment and storage medium |
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Address after: 100000 Dongcheng District, Beijing, Qinglong Hutong 1, 1103 house of Ge Hua building. Applicant after: Video Link Power Information Technology Co., Ltd. Address before: 100000 Beijing Dongcheng District gogoa building A1103-1113 Applicant before: BEIJING VISIONVERA INTERNATIONAL INFORMATION TECHNOLOGY CO., LTD. |
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Application publication date: 20161123 |