CN105141984A - Network video obtaining system and network video obtaining method - Google Patents
Network video obtaining system and network video obtaining method Download PDFInfo
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- CN105141984A CN105141984A CN201510518670.7A CN201510518670A CN105141984A CN 105141984 A CN105141984 A CN 105141984A CN 201510518670 A CN201510518670 A CN 201510518670A CN 105141984 A CN105141984 A CN 105141984A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
- H04N21/26613—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel for generating or managing keys in general
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/235—Processing of additional data, e.g. scrambling of additional data or processing content descriptors
- H04N21/2351—Processing of additional data, e.g. scrambling of additional data or processing content descriptors involving encryption of additional data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/85—Assembly of content; Generation of multimedia applications
- H04N21/854—Content authoring
- H04N21/8547—Content authoring involving timestamps for synchronizing content
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Databases & Information Systems (AREA)
- Theoretical Computer Science (AREA)
- Storage Device Security (AREA)
Abstract
The invention provides a network video obtaining system and a network video obtaining method. The network video obtaining system comprises a player and a server. The network video obtaining method comprises the following steps that: the player sends a video obtaining request to the server; the server adds a timestamp to a video resource address according to the video obtaining request, and encrypts and sends the video resource address and the timestamp to the player; and the player decrypts the encrypted video resource address and time stamp to obtain the video resource address, and accesses the server through the video resource address to obtain a video resource. According to the network video obtaining method disclosed by the invention, the timestamp is added to the video resource address, so that the video obtaining request is established and sent again after being transferred every time, instead of being cached after being sent for the first time; therefore, the video resource cannot be cached; and furthermore, the video resource and the address are encrypted, so that the safety of the video resource address is high.
Description
Technical field
The present invention relates to network communication technology field, particularly relate to a kind of Internet video and obtain system and method thereof.
Background technology
At present, increasing the network teaching platform provides e-Learning, the mode of student by paying, and the URL (UniformResourceLocator, URL(uniform resource locator)) obtaining teaching resource watches instructional video online and learns.Instructional video is as a kind of teaching resource of paying, if the URL address of instructional video is obtained by other people mode to illegally, then downloaded by instrument and propagate this instructional video, then this instructional video can be caused arbitrarily to reveal, damaging the interests of instructional video producer and teaching platform.
The existing URL address of instructional video that prevents is be encrypted this URL address by the method revealed; general employing third party software provides protection for Internet video; but third party software protecting network video implementation procedure is comparatively complicated; first then must pass through clear digital decoding engine decrypted video by digital encryption engine to video-encryption; this method is difficult to the website being directly dissolved into oneself, and namely allowing to incorporate website also needs dependence third party software technology to realize video-encryption protection.The method of another video-encryption protection is embodied as directly packs video file; and embed in player; input during broadcasting to be discharged by former video file after password and play, but adopt the video encrypted in this way and be easy to be cracked, fail safe is not high.
Summary of the invention
Based on this, providing of being necessary is a kind of simple and the Internet video that fail safe is high obtains system and method thereof.
A kind of Internet video obtains system, comprises player and server, player and server communication connection;
Player, for receiving the playing request of user and sending video acquisition request according to playing request to server;
Server, obtains request for receiver, video, shakes hands connect according to video acquisition request and player;
Server, also for according to video acquisition request, adds timestamp to the video resource address of request, by video resource address and timestamp encryption, and the video resource address of encryption and timestamp is returned to player;
Player, also for receiving video resource address and the timestamp of encryption, is decrypted to obtain video resource address to the video resource address of encrypting and timestamp; Player obtains video resource according to video resource address access services device.
Wherein in a kind of execution mode, server, obtains request specifically for receiver, video, uses cryptographic algorithm determination encryption key according to video acquisition request, and shakes hands with player and connect, and server uses encryption key to communicate with player.
Wherein in a kind of execution mode, player, specifically for sending video acquisition request according to the cipher mode pre-set to server, when the cipher mode that player pre-sets is dynamic encryption, player sends cipher key acquisition request according to playing request to server; Server, for sending key according to cipher key acquisition request to player; Player, after receiving key, sends video acquisition request to server, server, also for according to video acquisition request, uses dynamic encryption to be encrypted the video resource address of request and timestamp.
Wherein in a kind of execution mode, when the cipher mode that player pre-sets is static encryption, server, specifically for according to video acquisition request, uses static encryption to be encrypted the video resource address of request and timestamp.
Wherein in a kind of execution mode, player, also for whether effective according to timestamp checking video resource address, when verifying that video resource address is effective, effective for checking result is sent to server by player, server, plays to client for the video resource returned to correspondence according to the effective result of checking.
A kind of Internet video acquisition methods, comprising:
Player receives the playing request of user and sends video acquisition request according to playing request to server;
Server receiver, video obtains request, shakes hands connect according to video acquisition request and player;
Server, according to video acquisition request, adds timestamp to the video resource address of request;
By video resource address and timestamp encryption, and the video resource address of encryption and timestamp are returned to player;
Player receives video resource address and the timestamp of encryption, is decrypted to obtain video resource address to the video resource address of encrypting and timestamp; Player obtains video resource according to video resource address access services device.
Wherein in a kind of execution mode, server receiver, video obtains request, to shake hands the step connected according to video acquisition request and player, be specially: server receiver, video obtains request, cryptographic algorithm determination encryption key is used according to video acquisition request, and shake hands with player and connect, server uses encryption key to communicate with player.
Wherein in a kind of execution mode, when the cipher mode that player pre-sets is dynamic encryption, player receives the playing request of user and according to the step of playing request to the request of server transmission video acquisition, is specially: player receives the playing request of user and sends cipher key acquisition request according to playing request to server; Server sends key according to cipher key acquisition request to player; After player receives key, send video acquisition request to server;
By the step that video resource address and timestamp are encrypted, be specially: use dynamic encryption to be encrypted the video resource of request and timestamp.
Wherein in a kind of execution mode, when the cipher mode that player pre-sets is static encryption, by the step that video resource address and timestamp are encrypted, be specially: use static encryption to be encrypted the video resource address of request and timestamp.
Wherein in a kind of execution mode, according to the video resource address of encrypting and timestamp, the step of broadcasting is decrypted to video resource, be specially: whether player is effective according to timestamp checking video resource address, when verifying that video resource address is effective, effective for checking result is sent to server by player, and the video resource that server returns to correspondence according to the effective result of checking is play to client.
This Internet video obtains system, video acquisition request is sent to server by player, server adds timestamp according to this video acquisition request to video resource address, and this video resource address and timestamp encryption are sent to player, player is deciphered the video resource address of encryption and timestamp to obtain video resource address, obtains video resource by this video resource address access services device.This Internet video acquisition system, by adding timestamp to video resource address, enough ensure that video acquisition request can not be buffer memory after first time is sent out, but re-creating and retransmit after each being called, thus guaranteeing that video resource is not buffered.Further, by being encrypted video resource and address, the fail safe of video resource address is high.
Accompanying drawing explanation
Fig. 1 is a kind of working timing figure of Internet video acquisition system of execution mode;
Fig. 2 is a kind of flow chart of Internet video acquisition methods of execution mode.
Embodiment
As shown in Figure 1, Internet video obtains system and comprises player 100 and server 200, and player 100 and server 200 communicate to connect.
Player 100, for receiving the playing request of user and sending video acquisition request according to playing request to server 200.
Player 100 can adopt the player of teaching platform independent research, also can adopt third party's player.User is by clicking player, and relevant instructional video is play in request.Player 100 receives the playing request of user and sends video acquisition request according to this playing request to server 200.
Server 200, obtains request for receiver, video, shakes hands connect according to video acquisition request and player.
After server receives the video acquisition request of player, connect according to video acquisition request and player.Such as, wherein in a concrete execution mode, shake hands and SSL can be adopted to shake hands.Player 100 sends the message of Hello to server 200, and server 200 replys Hello message to guarantee to connect after receiving message.
Server 200, also for according to video acquisition request, adds timestamp to the video resource address of request, by video resource address and timestamp encryption, and the video resource address of encryption and timestamp is returned to player.
After server 200 receives video acquisition request, by adding timestamp at the end of video resource address URL, can ensure that video acquisition request can not be buffer memory after first time is sent out, but re-creating and retransmit after each being called.Therefore, the URL added after timestamp can be different due to the difference of timestamp.Server is encrypted video resource address and timestamp, the video resource address of encryption and timestamp is sent to the player of the request of sending.Such as, in teaching platform, when the user that the server of teaching platform receives player thinks the request of the teaching resource that online viewing is corresponding, timestamp is added in the teaching resource address of correspondence, and the address of adding after timestamp is encrypted.
Player 100, also for receiving video resource address and the timestamp of encryption, is decrypted to obtain video resource address to the video resource address of encrypting and timestamp; Player obtains video resource according to video resource address access services device.
After the video resource address of player 100 after receiving encryption and timestamp, the video resource address of encrypting and timestamp are decrypted, by the video resource address access services device 200 after deciphering, the video stream corresponding with playing request is play to client by server 200.
This Internet video obtains system, video acquisition request is sent to server by player, server adds timestamp according to this video acquisition request to video resource address, and this video resource address and timestamp encryption are sent to player, player is deciphered the video resource address of encryption and timestamp to obtain video resource address, obtains video resource by this video resource address access services device.
This Internet video acquisition system, by adding timestamp to video resource address, enough ensure that video acquisition request can not be buffer memory after first time is sent out, but re-creating and retransmit after each being called, thus guaranteeing that video resource is not buffered.Further, by being encrypted video resource and address, the fail safe of video resource address is high.
In another embodiment, server 200 obtains request specifically for receiver, video, uses cryptographic algorithm determination encryption key according to video acquisition request, and shakes hands with player and connect, and server uses encryption key to communicate with player.
Player 100 connects according to this video acquisition request and server 200, and server 200 can use rivest, shamir, adelman determination encryption key according to this video acquisition request, uses this encryption key and player to pass through.Encryption key can exchange key and determine in employing SLL handshake procedure.By this encryption key, can secured communication channel be set up, realize the coded communication of player end and server end, guarantee the communication security of player end and server end.
In another embodiment, server support carries out dynamic encryption or static encryption to video resource address.User can pre-set at the cipher mode of player end to video resource address.
Player 100, specifically for sending video acquisition request according to the cipher mode pre-set to server, when the cipher mode that player pre-sets is static encryption, player 100, for sending video acquisition request according to playing request to server 200.Server 200, specifically for according to video acquisition request, uses static encryption to be encrypted the video resource address of request and timestamp.
And when the cipher mode that player 100 pre-sets is dynamic encryption, player 100 sends cipher key acquisition request according to playing request to server 200; Server 200, for sending key according to cipher key acquisition request to player; Player, after receiving key, sends video acquisition request to server, server, also for according to video acquisition request, uses dynamic encryption to be encrypted the video resource address of request and timestamp.
The cipher mode of Server Default is static encryption, when receiving the key request that player sends, just adopts the mode of dynamic encryption to carry out dynamic encryption to video resource address and timestamp.
In a particular embodiment, the adopted 3DES cryptographic algorithm of dynamic encryption, when the cipher mode that player pre-sets is dynamic encryption, player 100 first sends cipher key acquisition request to server according to playing request and obtains key, after obtaining the key of server transmission, send video acquisition request to server again, server, according to this video acquisition request, carries out dynamic encryption generating ciphertext to video resource address and timestamp.Player 100, after receiving ciphertext, is decrypted according to double secret key ciphertext, obtains video resource address and timestamp.
Generally speaking, the fail safe of dynamic encryption higher than the fail safe of static encryption, when user use for third party's player time, the cipher mode of the acquiescence that usual third party's player pre-sets is dynamic encryption.
In another embodiment, timestamp is also for verifying that whether video address is effective.
Player 100, whether also for effective according to timestamp checking video resource address, when verifying that video resource address is effective, effective for checking result is sent to server by player, server 200, plays to client for the video resource returned to correspondence according to the effective result of checking.
In a particular embodiment, video resource address can be set to five minutes effective time, calculates according to the timestamp that video resource address is added.In 5 minutes of timestamp generation effectively, after the term of validity more than 5 minutes, even if hacker intercepts video resource address, owing to having exceeded the effective operating period, because this address is invalid, player cannot obtain this video resource.
The present invention also provides a kind of Internet video to obtain system, comprises the following steps:
S101: player receives the playing request of user and sends video acquisition request according to playing request to server.
Player 100 can adopt the player of teaching platform independent research, also can adopt third party's player.User is by clicking player, and relevant instructional video is play in request.Player 100 receives the playing request of user and sends video acquisition request according to this playing request to server 200.
S103: server receiver, video obtains request, shakes hands connect according to video acquisition request and player.
After server receives the video acquisition request of player, connect according to video acquisition request and player.Such as, wherein in a concrete execution mode, shake hands and SSL can be adopted to shake hands.Player 100 sends the message of Hello to server 200, and server 200 replys Hello message to guarantee to connect after receiving message.
S105: server, according to video acquisition request, adds timestamp to the video resource address of request.
After server 200 receives video acquisition request, by adding timestamp at the end of video resource address URL, can ensure that video acquisition request can not be buffer memory after first time is sent out, but re-creating and retransmit after each being called.Therefore, the URL added after timestamp can be different due to the difference of timestamp.
S107: by video resource address and timestamp encryption, and the video resource address of encryption and timestamp are returned to player.
Server is encrypted video resource address and timestamp, the video resource address of encryption and timestamp is sent to the player of the request of sending.Such as, in teaching platform, when the user that the server of teaching platform receives player thinks the request of the teaching resource that online viewing is corresponding, timestamp is added in the teaching resource address of correspondence, and the address of adding after timestamp is encrypted.
S109: player receives video resource address and the timestamp of encryption, is decrypted to obtain video resource address to the video resource address of encrypting and timestamp.
S111: player obtains video resource according to video resource address access services device.
After the video resource address of player 100 after receiving encryption and timestamp, the video resource address of encrypting and timestamp are decrypted, by the video resource address access services device 200 after deciphering, the video stream corresponding with playing request is play to client by server 200.
This Internet video acquisition methods, video acquisition request is sent to server by player, server adds timestamp according to this video acquisition request to video resource address, and this video resource address and timestamp encryption are sent to player, player is deciphered the video resource address of encryption and timestamp to obtain video resource address, obtains video resource by this video resource address access services device.
This Internet video acquisition methods, by adding timestamp to video resource address, enough ensure that video acquisition request can not be buffer memory after first time is sent out, but re-creating and retransmit after each being called, thus guaranteeing that video resource is not buffered.Further, by being encrypted video resource and address, the fail safe of video resource address is high.
In another embodiment, step S101: server receiver, video obtains request, to shake hands the step connected according to video acquisition request and player, be specially: server receiver, video obtains request, cryptographic algorithm determination encryption key is used according to video acquisition request, and shake hands with player and connect, server uses encryption key to communicate with player.
Player 100 connects according to this video acquisition request and server 200, and server 200 can use rivest, shamir, adelman determination encryption key according to this video acquisition request, uses this encryption key and player to pass through.Encryption key can exchange key and determine in employing SLL handshake procedure.By this encryption key, can secured communication channel be set up, realize the coded communication of player end and server end, guarantee the communication security of player end and server end.
In another embodiment, server support carries out dynamic encryption or static encryption to video resource address.User can pre-set at the cipher mode of player end to video resource address.
Player sends video acquisition request according to the cipher mode pre-set to server.
When the cipher mode that player pre-sets is static encryption, the step that video resource address and timestamp are encrypted by step S107, is specially: use static encryption to be encrypted the video resource address of request and timestamp.
Accordingly, when the cipher mode that player pre-sets is dynamic encryption, step S101: player receives the playing request of user and according to the step of playing request to the request of server transmission video acquisition, is specially: player sends cipher key acquisition request according to playing request to server; Server sends key according to cipher key acquisition request to player; After player receives key, send video acquisition request to server.
The step that video resource address and timestamp are encrypted by step S107, is specially: use dynamic encryption to be encrypted the video resource of request and timestamp.
The cipher mode of Server Default is static encryption, when receiving the key request that player sends, just adopts the mode of dynamic encryption to carry out dynamic encryption to video resource address and timestamp.
In a particular embodiment, the adopted 3DES cryptographic algorithm of dynamic encryption, when the cipher mode that player pre-sets is dynamic encryption, player 100 first sends cipher key acquisition request to server according to playing request and obtains key, video acquisition request is sent again to server, server, according to this video acquisition request, carries out dynamic encryption generating ciphertext to video resource address and timestamp.Player 100, after receiving ciphertext, is decrypted according to double secret key ciphertext, obtains video resource address and timestamp.
Generally speaking, the fail safe of dynamic encryption higher than the fail safe of static encryption, when user use for third party's player time, the cipher mode of the acquiescence that usual third party's player pre-sets is dynamic encryption.
In another embodiment, timestamp is also for verifying that whether video address is effective.
Step S111: player obtains the step of video resource according to video resource address access services device, specifically comprise: whether player is effective according to timestamp checking video resource address, when verifying that video resource address is effective, effective for checking result is sent to server by player, and the video resource that server returns to correspondence according to the effective result of checking is play to client.
In a particular embodiment, video resource address can be set to five minutes effective time, calculates according to the timestamp that video resource address is added.In 5 minutes of timestamp generation effectively, after the term of validity more than 5 minutes, even if hacker intercepts video resource address, owing to having exceeded the effective operating period, because this address is invalid, player cannot obtain this video resource.
Each technical characteristic of above embodiment can combine arbitrarily, for making description succinct, all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this specification is recorded.
Above embodiment only have expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but can not therefore be construed as limiting the scope of the patent.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (10)
1. Internet video obtains a system, comprises player and server, described player and server communication connection;
Described player, for receiving the playing request of user and sending video acquisition request according to described playing request to described server;
Described server, for receiving described video acquisition request, shaking hands according to described video acquisition request and described player and connecting;
Described server, also for according to described video acquisition request, adds timestamp to the video resource address of request, by described video resource address and timestamp encryption, and the described video resource address of encryption and timestamp is returned to described player;
Described player, also for receiving video resource address and the timestamp of described encryption, is decrypted to obtain described video resource address to the video resource address of described encryption and timestamp; Described player is accessed described server according to described video resource address and is obtained video resource.
2. Internet video according to claim 1 obtains system, it is characterized in that, described server, specifically for receiving described video acquisition request, cryptographic algorithm determination encryption key is used according to described video acquisition request, and shake hands with described player and connect, described server uses described encryption key to communicate with described player.
3. Internet video according to claim 1 obtains system, it is characterized in that, described player, specifically for sending video acquisition request according to the cipher mode pre-set to described server, when the cipher mode that described player pre-sets is dynamic encryption, described player sends cipher key acquisition request according to described playing request to described server; Described server, for sending key according to described cipher key acquisition request to described player; Described player, after receiving described key, sends video acquisition request to described server, described server, also for according to described video acquisition request, uses dynamic encryption to be encrypted the video resource address of request and timestamp.
4. Internet video according to claim 3 obtains system, it is characterized in that, when the cipher mode that described player pre-sets is static encryption, described server, specifically for according to described video acquisition request, static encryption is used to be encrypted the video resource address of request and timestamp.
5. Internet video according to claim 4 obtains system, described player, also for verifying that according to described timestamp whether described video resource address is effective, when verifying that described video resource address is effective, effective for described checking result is sent to described server by described player, described server, plays to described client for the video resource returned to correspondence according to the effective result of described checking.
6. an Internet video acquisition methods, comprising:
Player receives the playing request of user and sends video acquisition request according to described playing request to described server;
Described server receives described video acquisition request, and shaking hands according to described video acquisition request and described player connects;
Described server, according to described video acquisition request, adds timestamp to the video resource address of request;
By described video resource address and timestamp encryption, and the described video resource address of encryption and timestamp are returned to described player;
Described player receives video resource address and the timestamp of described encryption, is decrypted to obtain described video resource address to the video resource address of described encryption and timestamp; Described player is accessed described server according to described video resource address and is obtained video resource.
7. Internet video acquisition methods according to claim 6, it is characterized in that, described server receives described video acquisition request, to shake hands the step connected according to described video acquisition request and described player, be specially: described server receives described video acquisition request, use cryptographic algorithm determination encryption key according to described video acquisition request, and shake hands with described player and connect, described server uses described encryption key to communicate with described player.
8. Internet video according to claim 6 obtains system, it is characterized in that, when the cipher mode that described player pre-sets is dynamic encryption, described player receives the playing request of user and according to the step of described playing request to the request of described server transmission video acquisition, is specially: described player receives the playing request of described user and sends cipher key acquisition request according to described playing request to described server; Described server sends key according to described cipher key acquisition request to described player; After described player receives described key, send video acquisition request to described server;
Described step of being encrypted in described video resource address and timestamp, is specially: use dynamic encryption to be encrypted the video resource of request and timestamp.
9. Internet video acquisition methods according to claim 8, it is characterized in that, when the cipher mode that described player pre-sets is static encryption, described step of being encrypted in described video resource address and timestamp, is specially: use static encryption to be encrypted the video resource address of request and timestamp.
10. Internet video according to claim 9 obtains system, the described video resource address according to described encryption and timestamp are decrypted the step of broadcasting to video resource, be specially: according to described timestamp, described player verifies that whether described video resource address is effective, when verifying that described video resource address is effective, effective for described checking result is sent to described server by described player, and the video resource that described server returns to correspondence according to the effective result of described checking is play to described client.
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