CN102014122B - IP Camera service system of point-to-point protocol based on two-way safety authentication - Google Patents
IP Camera service system of point-to-point protocol based on two-way safety authentication Download PDFInfo
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Abstract
The invention discloses an IP Camera service system of a point-to-point protocol based on two-way safety authentication, which comprises a network camera terminal, a client and a service platform. The network camera terminal is used for acquiring and transmitting images and audios of a monitored object; the client is used for controlling and adjusting an operation state of a network shooting terminal; and the service platform is used for assisting the network camera terminal and the client to establish communication connection, wherein the network camera terminal acquires configuration from the service platform and carries out two-way safety authentication along with the service platform; heartbeat connection is kept to wait the access of the client; the client assesses a portal and logs on to the service platform; the client sends signaling for accessing and controlling the network camera terminal to the service platform, and the service platform forwards the control signaling according to the client at the same time; and the client and the network camera terminal establish point-to-point audio/video connection under the assistance of the service platform.
Description
Technical field:
The present invention relates to multi-media information communication technology in the Internet, particularly a kind of IP Camera service system of the point-to-point protocol based on bidirectional safe certification.
Background technology:
Along with the progress of technology, web camera (also referred to as IPCAM or IP camera) technology is widely used now.
And this wherein, many application is consumer product at present, and namely ordinary consumer is without the need to passing through telecom operators, the IPCAM that can be able to buy in electronics sales field or security protection sales field.Consumer IPCAM is mainly used in supervising to old man or child in family, and household safety-protection etc.
And these consumer IPCAM major defects are: arrange loaded down with trivial details, success rate is very low.Whole process, except will arranging IPCAM internetwork connection mode and address, also relates to following setting up procedure in use procedure:
1. the first step: offer dynamic domain name service (DDNS) account number.Such as peanut shell or the DDNS service suppliers such as 3322 there registered user, and under user, offer corresponding domain name, and need the set-up mode knowing DDNS service.
2. second step: DDNS account number is set on IPCAM.Need to log in the administration interface of IPCAM, find DDNS to arrange, arrange the username and password registered in the first step wherein and offer domain name, the set-up mode that different DDNS serves and content can be different.
3. the 3rd step: enable NAT strategy on the router.Certain fixed port is mapped on IPCAM internal address.
Only when guaranteeing that above-mentioned three steps are all correct, consumer IPCAM could use smoothly.Overall process arranges loaded down with trivial details, very low for the ordinary consumer success rate being unfamiliar with IT technology.
Certainly, the web camera service of goods that except the IPCAM of above-mentioned routine, China Telecom is also proposed at present " family's global eyes ", its function is identical with consumer product, and difference is:
1. user participates in telecom service plan or buys product separately, and telecommunications service personnel on-site install terminal;
2. all terminals are connected to the network service platform that telecommunications oneself is built, and user carries out video access by access services platform;
3. video code flow is all forwarded by service platform, and namely code stream is issued service platform by terminal, and service platform is distributed to each connection user again.
This pattern major defect is that video code flow is all forwarded by service platform, and the terminal quantity that every station server can carry is less, causes average operation cost higher.
Summary of the invention:
In order to simplify the in use loaded down with trivial details setting up procedure of consumer, simultaneously reduce provide the server of the operator of service owing to being responsible in whole communication process the immense pressure transmitting data code flow and carry, the present invention proposes a kind of on the basis of guaranteeing communication security the IPCamera service system based on the point-to-point protocol of bidirectional safe certification.
The IP Camera service system of this point-to-point protocol based on bidirectional safe certification, comprising:
One for gathering and transmit the network shooting terminal of monitored object images and audio frequency;
One for the client of controlling and adjustment network shooting terminal running state; And
One service platform established a communications link for assisted network camera shooting terminal and client;
It is characterized in that,
Described network shooting terminal obtains configuration from service platform, with the certification of service platform bidirectional safe, then keeps heartbeat to connect and waits for client-access; Described client is to service platform access door or logged in by routine access service platform; Described client sends the signaling of access and net control camera shooting terminal to service platform, and service platform forwards control signal according to client simultaneously; Described client and network shooting terminal are set up point-to-point audio frequency and video and are connected under the assistance of service platform.
In such scheme, the bidirectional safe certification of described network shooting terminal and service platform is obtained for registering and the configuration information such as certification by network shooting terminal Connection Service platform, and network shooting terminal completes two-way authentication according to this configuration information then to service platform registration afterwards.
In such scheme, described network shooting terminal Connection Service platform obtains configuration informations such as being used for registration and certification and is built in network shooting terminal and service platform by cryptographic algorithm E1 (E1 can be the cryptographic algorithm such as DES, 3DES, RC2, RC4, IDEA, RSA, DSA, AES); Network shooting terminal E1 encrypted feature information, sends the request obtaining configuration information to service platform; Judge that whether network shooting terminal is legal with E1 deciphering after service platform receives request, as legal, after being encrypted by configuration information E1, send to network shooting terminal; Network shooting terminal E1 judges that whether service platform is legal after deciphering, and obtains configuration information simultaneously.
In such scheme, described network shooting terminal is built in network shooting terminal and service platform in service platform registration by cryptographic algorithm E2 (E2 can be the cryptographic algorithm such as DES, 3DES, RC2, RC4, IDEA, RSA, DSA, AES) according to this configuration information; Network shooting terminal, according to the configuration information obtained before, sends by E2 encrypting registration information to service platform; Judge that whether network shooting terminal is legal with E2 deciphering after service platform receives request, as legal, the information E2 that will succeed in registration sends to network shooting terminal after encrypting; Network shooting terminal E2 judges that whether service platform is legal after deciphering, and obtains the information that succeeds in registration simultaneously.
In such scheme, after described network shooting endpoint registration success, keep heartbeat to be connected with service platform, wait for client's side link.
In such scheme, described client is accessed door to service platform or also logged in by routine access service platform is by the login interface of client-access service platform or by installation program of client and by routine access service platform, the portal service back link information of service platform and encryption information needed; User inputs user name, password etc. in client, encrypts backward service platform and submits authentication request to; Service platform judges after receiving request to log in whether successful also response results; As logined successfully, client can carry out seeing video, control the operation such as The Cloud Terrace and adjustment parameter; Operation signaling is according to circumstances transmitted to network shooting terminal by service platform, and network shooting terminal carries out responding rear service platform customer in response end again, and namely all control signals are all via service platform intermediate treatment and forwarding.
In such scheme, described to set up that point-to-point audio frequency and video connect be from the respective public network address of the point to point connect service acquisition of service platform and port by network shooting terminal and client; In order to prevent because port is in inactive state for a long time thus cause corresponding port mapping to be closed after passing through, network shooting terminal and client periodically send to point to point connect service and keep connection packet to keep port mapping relationship; Described network shooting terminal and client comprise point-to-point parameter in registration message, comprise network type and point-to-point communication ability; When described network shooting terminal or client need to carry out point-to-point communication, judge mutual network type, point-to-point communication ability, public network IP address and port numbers by service platform; Before audio and video data streams sends, network shooting terminal and client need transmission to wear net bag to connect, both sides can enter audio/video flow transmit stage afterwards, period network shooting terminal and client all require periodically to send wear net bag to keep this connection.
In such scheme, described set up audio frequency and video connect after, network shooting terminal built-in encryption algorithm E3 (E3 can be the cryptographic algorithm such as DES, 3DES, RC2, RC4, IDEA, RSA, DSA, AES) and User Defined key (K1) encrypt audio-video code stream, the audio-video code stream of encryption to client by Internet Transmission, is inputted key by client-side program built-in encryption algorithm E3 and user and is decrypted; As user, to input key identical with encryption key K1, then can complete and decipher and watch video; As user, to input key different from encryption key K1, then cannot complete deciphering.
For above-mentioned the cryptographic algorithm E1, E2 and E3 that mention, this three of E1, E2 and E3 can be made to adopt different cryptographic algorithm respectively, maybe can make the cryptographic algorithm that in three, any two employings are identical, three maybe can be made all to adopt identical cryptographic algorithm.This is set the needs of safe class according to during practical application entirely.Network shooting terminal in system of the present invention is placed at home (medium-sized and small enterprises are also suitable for), be connected with router by wireless Wi-Fi or Ethernet, be connected with service platform by the Internet, or be directly connected with service platform by wireless communication modes such as 3G.
Client can be PC or mobile phone.PC is generally positioned at the local area network (LAN) after router, may have access to the Internet.Mobile phone is surfed the Net by modes such as GPRS, EDGE, 3G or WiFi.
Service platform erection on the internet, comprises following part:
1. portal service.The door of user or client-side program access, by carrying out various interactive operation after login authentication.
2. signalling service.Be responsible for the process of control signal between subscription client and terminal.
3. point to point connect service.Terminal and client is assisted to carry out gateway penetration and point to point connect.
4. code stream forwards service.Cannot point-to-point time provide audio-video code stream to forward, guarantee that 100% video can be seen.
5. configuration service.Service platform is configured terminal and client and manages.
6. database.Record data and the service condition of all terminals, client and service platform.
As can be seen here, present system by using " point-to-point " technical and accreditation cryptographic verification techniques, and will be set using mode convenience, simplicity, solve the defect that the existing IPCAM product in market exists, substantially increase the ease for use of product.
The service platform of present system can carry out safety certification to terminal and client.And service platform is checked realized good Consumer's Experience by the video of user self-help registration and 100%.User buys after terminal can log-in service platform, carries out user's registration by portal service, and adds, deletes terminal, revise and give login password etc. for change.Greatly simplify service application pattern like this.
In addition, the point to point connect service of service platform can provide very high point to point connect success rate, but in some particular network situation, also can run into obstacle cannot realize point to point connect.
In this case, the code stream of service platform forwards service and terminal audio-video code stream can be forwarded to client, namely code stream can be sent to code stream forwarding service by control terminal by service platform, then sends to client by code stream forwarding service, guarantees that the video of 100% can be seen.
On the other hand, service platform adopts P-2-P technology to realize audio-video code stream and is directly sent to client by terminal, solve telecommunications " family's global eyes " existing audio-video code stream and entirely forward caused server stress problem, substantially increase the bearing capacity of single server, thus greatly reduce the average service cost of terminal.
Accompanying drawing illustrates:
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
Fig. 1 is basic structure and the workflow block diagram of system of the present invention;
Fig. 2 is the structure principle chart of system of the present invention when embody rule;
Fig. 3 is the flow chart of network shooting terminal and the certification of service platform bidirectional safe in system of the present invention;
Fig. 4 is the workflow diagram in system of the present invention between client and service platform;
Fig. 5 is the flow chart of network shooting terminal and client point to point connect process in system of the present invention.
Embodiment:
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the present invention further.
As shown in Figure 1, the workflow of the IP Camera service system of the point-to-point protocol based on bidirectional safe certification of the present invention is as follows:
1, terminal obtains configuration from service platform, with the certification of service platform bidirectional safe, then keeps connecting waiting for client-access.
2, client-access door logging in.
3, client sends the signaling of access and control terminal to service platform, and service platform according to circumstances processes and forwards control signal.
4, client and terminal are set up point-to-point audio frequency and video and are connected under the assistance of service platform.
As shown in Figure 2, it is the typical apply case of present system shown in figure, wherein except comprising the network shooting terminal (terminal/IPCAM), client (PC, mobile phone/MID) and the service platform (service platform) that describe in scheme, also comprise for interconnection network camera shooting terminal and service platform home wireless router, be used for being connected the enterprise router of PC as client and service platform.In addition, the equipment such as mobile phone/MID can also be established a communications link by the modes such as GPRS, EDGE, 3G or Wi-Fi and service platform.
In these equipment above-mentioned, network shooting terminal is placed at home, and user accesses in unit.
In family, wireless router is by ADSL connecting Internet, and getting outer net IP address is 180.45.109.124, and the configuration Intranet network segment is 10.0.0.x.Terminal is connected with wireless router by Wi-Fi, and getting IP address is 10.0.0.2.
Unit enterprise router is by optical fiber private line access the Internet, and outer net IP address is 202.95.223.213, and the configuration Intranet network segment is 192.168.1.x.The IP address of the PC configuration of user is 192.168.1.66, and operating system is Windows XP, uses Internet Explorer 8.0 browser.
Terminal completes certification and registration by wireless router to service platform at home, and keeps heartbeat to connect.
User, sends control signaling to terminal by service platform after being verified by enterprise router access services platform in unit.As video seen by needs, judge both sides' Internet type by service platform: as can point to point connect be carried out, then send signaling according to network condition and carry out point to point connect to both sides; As cannot point to point connect be carried out, then send signaling to IPCAM terminal, allow it send video code flow to service platform, be transmitted to subscription client by service platform.
As shown in Figure 3, the bidirectional safe verification process between terminal Connection Service platform, namely terminal start after, when guarantee can connecting Internet, realize following steps:
1, Connection Service platform obtains configuration informations such as being used for registration and certification, completes two-way authentication simultaneously.Cryptographic algorithm E1 is built in terminal and service platform.Terminal E1 encrypted feature information, sends the request obtaining configuration information to service platform.Judge that whether terminal is legal with E1 deciphering after service platform receives request, as legal, after being encrypted by configuration information E1, send to terminal.Judge that whether service platform is legal after terminal E1 deciphering, obtain configuration information simultaneously.
2, terminal is registered to service platform according to configuration information, completes two-way authentication simultaneously.Cryptographic algorithm E2 is built in terminal and service platform.Terminal, according to the configuration information obtained before, sends by E2 encrypting registration information to service platform.Judge that whether terminal is legal with E2 deciphering after service platform receives request, as legal, the information E2 that will succeed in registration sends to terminal after encrypting.Judge that whether service platform is legal after terminal E2 deciphering, obtain the information that succeeds in registration simultaneously.
After endpoint registration success, keep heartbeat to link with service platform, wait for client's side link.
As shown in Figure 4, between client and service platform the communication works of user mainly user carry out client logs by PC or mobile phone/MID, complete following steps:
1, the login interface of client-access service platform, the portal service back link information of service platform and encryption information needed.
2, user inputs user name, password etc. in client, encrypts backward service platform and submits authentication request to.Service platform judges after receiving request to log in whether successful also response results.
3, as logined successfully, client can carry out various operation, as seen video, controlling The Cloud Terrace and adjustment parameter etc.Operation signaling is according to circumstances transmitted to terminal by service platform, and terminal carries out responding rear service platform customer in response end again.
As shown in Figure 5,
The NAT that terminal and client carry out router/firewall by the point to point connect service of service platform passes through, and completes the link of point-to-point audio frequency and video, completes following steps:
1, terminal and client are from the respective public network address of the point to point connect service acquisition of service platform and port.In order to prevent because port is in inactive state for a long time thus cause corresponding port mapping to be closed after passing through, terminal and client periodically send to point to point connect service and keep connection packet to keep port mapping relationship.
2, terminal and client comprise point-to-point parameter in registration message, comprise network type and point-to-point communication ability etc.
3, when terminal or client need to carry out point-to-point communication, mutual network type, point-to-point communication ability, public network IP address and port numbers is judged by service platform.Audio and video data streams send before, terminal and client need transmission wear net bag to connect, both sides can enter audio/video flow transmit stage afterwards, period terminal and client all require periodically to send wear net bag to keep this connection.
In addition, user can arrange the Crypted password of audio-video code stream in terminal.After user arranges Crypted password, sent audio-video code stream can be encrypted by terminal, and the code stream namely transmitted on network between terminal and client is encrypted transmission, and user only just can be decrypted at client input password.Safety and the confidentiality of audio video transmission can be guaranteed like this.
System can realize code stream multi-wad join.When the same terminal of multiple client-access, terminal takes video code flow multicopy (simultaneously reducing single channel code stream), the time-multiplexed mode of audio code stream.Multi-client can be realized when the Internet bandwidth is limited like this to access simultaneously, and guarantee result of use as far as possible.
When terminal and client are at same local area network (LAN), can switch to local area network (LAN) pattern by automatic or manual, namely audio-video code stream directly no longer passes through internet in local area network (LAN) internal transmission.Greatly can reduce the pressure of the Internet bandwidth and service platform like this.
More than show and describe general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection range is defined by appending claims and equivalent thereof.
Claims (8)
1., based on the IP Camera service system of the point-to-point protocol of bidirectional safe certification, comprising:
One for gathering and transmit the network shooting terminal of monitored object images and audio frequency;
One for the client of controlling and adjustment network shooting terminal running state; And
One service platform established a communications link for assisted network camera shooting terminal and client;
It is characterized in that,
Described network shooting terminal obtains configuration from service platform, with the certification of service platform bidirectional safe, then keeps heartbeat to connect and waits for client-access; Described client is to service platform access door or logged in by routine access service platform; Described client sends the signaling of access and net control camera shooting terminal to service platform, and service platform forwards control signal according to client simultaneously; Described client and network shooting terminal are set up point-to-point audio frequency and video and are connected under the assistance of service platform;
The bidirectional safe certification of described network shooting terminal and service platform is obtained for registering and the configuration information of certification by network shooting terminal Connection Service platform, and network shooting terminal completes two-way authentication according to this configuration information then to service platform registration afterwards;
Described network shooting terminal Connection Service platform obtains for be registered and the configuration information of certification is built in network shooting terminal and service platform by cryptographic algorithm E1; Network shooting terminal E1 encrypted feature information, sends the request obtaining configuration information to service platform; Judge that whether network shooting terminal is legal with E1 deciphering after service platform receives request, as legal, after being encrypted by configuration information E1, send to network shooting terminal; Network shooting terminal E1 judges that whether service platform is legal after deciphering, and obtains configuration information simultaneously.
2. the IP Camera service system of the point-to-point protocol based on bidirectional safe certification according to claim 1, it is characterized in that, described network shooting terminal is built in network shooting terminal and service platform in service platform registration by cryptographic algorithm E2 according to this configuration information; Network shooting terminal, according to the configuration information obtained before, sends by E2 encrypting registration information to service platform; Judge that whether network shooting terminal is legal with E2 deciphering after service platform receives request, as legal, the information E2 that will succeed in registration sends to network shooting terminal after encrypting; Network shooting terminal E2 judges that whether service platform is legal after deciphering, and obtains the information that succeeds in registration simultaneously.
3. the IP Camera service system of the point-to-point protocol based on bidirectional safe certification according to claim 2, is characterized in that, after described network shooting endpoint registration success, keeps heartbeat to be connected, wait for client's side link with service platform.
4. the IP Camera service system of the point-to-point protocol based on bidirectional safe certification according to claim 1, it is characterized in that, described client is accessed door to service platform or also logged in by routine access service platform is by the login interface of client-access service platform or by installation program of client and by routine access service platform, the portal service back link information of service platform and encryption information needed; User inputs user name, password in client, encrypts backward service platform and submits authentication request to; Service platform judges after receiving request to log in whether successful also response results; As logined successfully, client can carry out seeing video, control The Cloud Terrace and these operations of adjustment parameter; Operation signaling is according to circumstances transmitted to network shooting terminal by service platform, and network shooting terminal carries out responding rear service platform customer in response end again, and namely all control signals are all via service platform intermediate treatment and forwarding.
5. the IP Camera service system of the point-to-point protocol based on bidirectional safe certification according to claim 1, it is characterized in that, described to set up that point-to-point audio frequency and video connect be from the respective public network address of the point to point connect service acquisition of service platform and port by network shooting terminal and client; In order to prevent because port is in inactive state for a long time thus cause corresponding port mapping to be closed after passing through, network shooting terminal and client periodically send to point to point connect service and keep connection packet to keep port mapping relationship; Described network shooting terminal and client comprise point-to-point parameter in registration message, comprise network type and point-to-point communication ability; When described network shooting terminal or client need to carry out point-to-point communication, judge mutual network type, point-to-point communication ability, public network IP address and port numbers by service platform; Before audio and video data streams sends, network shooting terminal and client need transmission to wear net bag to connect, both sides can enter audio/video flow transmit stage afterwards, period network shooting terminal and client all require periodically to send wear net bag to keep this connection.
6. the IP Camera service system of the point-to-point protocol based on bidirectional safe certification according to claim 1, it is characterized in that, described set up audio frequency and video connect after, network shooting terminal built-in encryption algorithm E3 and User Defined key K 1 encrypt audio-video code stream, the audio-video code stream of encryption to client by Internet Transmission, is inputted key by client-side program built-in encryption algorithm E3 and user and is decrypted; As user, to input key identical with encryption key K1, then can complete and decipher and watch video; As user, to input key different from encryption key K1, then cannot complete deciphering.
7. the IP Camera service system of the point-to-point protocol based on bidirectional safe certification according to claim 1, it is characterized in that, described network shooting terminal is first connected with router by wireless Wi-Fi or Ethernet, then be connected with service platform by the Internet, or be directly connected with service platform by 3G wireless communication mode.
8. the IP Camera service system of the point-to-point protocol based on bidirectional safe certification according to claim 1, it is characterized in that, client is PC or mobile phone.
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