WO2010025638A1 - Procédé, dispositif et système de transmission d’une diffusion en flux en direct poste à poste - Google Patents

Procédé, dispositif et système de transmission d’une diffusion en flux en direct poste à poste Download PDF

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Publication number
WO2010025638A1
WO2010025638A1 PCT/CN2009/072786 CN2009072786W WO2010025638A1 WO 2010025638 A1 WO2010025638 A1 WO 2010025638A1 CN 2009072786 W CN2009072786 W CN 2009072786W WO 2010025638 A1 WO2010025638 A1 WO 2010025638A1
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WO
WIPO (PCT)
Prior art keywords
peer
key
live stream
information
digital signature
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PCT/CN2009/072786
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English (en)
Chinese (zh)
Inventor
王志兵
姜海军
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华为技术有限公司
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Publication of WO2010025638A1 publication Critical patent/WO2010025638A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/104—Peer-to-peer [P2P] networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60—Network streaming of media packets

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a peer-to-peer (P2P, Peer to Peer) live stream delivery method, apparatus, and system.
  • P2P peer-to-peer
  • Peer to Peer live stream delivery method, apparatus, and system.
  • Data encryption technology can be divided into data transmission, data storage, data integrity authentication and key management technology.
  • Two encryption algorithms are generally used in network applications: symmetric key algorithm and asymmetric key algorithm.
  • the so-called symmetric key algorithm means that the encryption key and the decryption key of one encryption algorithm are the same, or although they are not the same, one can easily derive another one, that is, the key is shared by both parties.
  • the so-called asymmetric key algorithm means that the encryption key and the decryption key of one encryption algorithm are different, or another key cannot be derived from one of the keys.
  • One of the two keys is called a public key. , used for decryption, is public, and the other is called private key, used for encryption, is confidential, and it is computationally infeasible to calculate the private key from the public key.
  • the message-digest algorithm refers to generating a message-digest for a piece of information to prevent tampering. MD5 treats the entire file as a large text message, and through its irreversible string transformation algorithm, produces a unique MD5 message digest. MD5 belongs to a symmetric key algorithm.
  • the commonly used asymmetric key algorithm is the RSA algorithm, which has high encryption strength and does not require the communication parties to establish some trust relationship or share some secret in advance.
  • Digital Signature technology is a typical application of asymmetric key algorithms.
  • the so-called digital signature is some data attached to the data unit, or a password conversion to the data unit. These data or transformations allow the recipient of the data unit to confirm the integrity of the source and data unit of the data unit and to protect the data from counterfeiting by a person (e.g., a recipient). It is a method of signing messages in electronic form, a signed message can be transmitted in a communication network.
  • the main functions of digital signature are: to ensure the integrity of information transmission, sender identity authentication, to prevent the occurrence of repudiation in transactions.
  • the application of the digital signature (e.g., RSA algorithm) based on the MD5 algorithm is to encrypt the summary information using the sender's private key and transmit it to the recipient along with the original text.
  • the receiver can decrypt the encrypted digest information only by using the transmitted public key, and use the HASH function to generate a summary information of the received original text, which is compared with the decrypted digest information. If they are the same, the received information is complete and has not been modified during the transmission. Otherwise, the information has been modified. Therefore, the digital signature based on the MD5 algorithm can verify the integrity of the information.
  • a typical feature of P2P is content sharing between user nodes (Peer).
  • the content data of the child nodes is provided by the parent node.
  • one child node may only obtain content from one parent node.
  • the prior art uses the information-digest algorithm MD5.
  • MD5 information-digest algorithm
  • the user obtains the MD5 check code before downloading, and then performs verification during the download process, so that the content can be found in the download process in time. Whether it is maliciously tampering, and does not need to complete the MD5 verification after downloading the complete content.
  • the embodiment of the invention provides a method, a device and a system for transmitting P2P live stream, which can prevent the P2P live stream from being maliciously falsified during the transmission process, and avoids a big impact on the performance of the P2P system.
  • a method for delivering a peer-to-peer live stream includes:
  • the public key is sent to the peer-to-peer client, so that the peer-to-peer client uses the public key to perform signature verification on the received peer-to-peer live stream.
  • a digital signature device comprising:
  • a signature key generating unit configured to generate a public key and a private key pair of the digital signature algorithm
  • a signature key issuing unit configured to send the private key to the content publishing server, so that the content publishing server uses The private key is used to sign the source live stream, and the signed source live stream is sliced; and the public key is sent to the resource management server, so that the point-to-point client obtains the public on the resource management server.
  • the key uses the public key to perform signature verification on the received peer-to-peer live stream.
  • a system for point-to-point live stream delivery including:
  • a digital signature device configured to generate a public key and a private key pair of the digital signature algorithm, and send the private key to the content distribution server, and send the public key to the resource management server;
  • a content publishing server configured to sign the source live stream by using a private key, and slice the signed source live stream
  • the resource management server is configured to maintain and deliver the peer-to-peer client-side key, so that the peer-to-peer client obtains the public key and uses the public key to perform signature verification on the received peer-to-peer live stream.
  • a peer-to-peer client including: a signature key obtaining unit, configured to acquire a digital signature algorithm public key;
  • a signature verification unit is configured to sign the received point-to-point live stream using the obtained digital signature algorithm public key.
  • the digital signature device by introducing a digital signature technology into the P2P architecture, the digital signature device generates a key pair of the digital signature algorithm, and the private key is sent to the content distribution server, and the public key is sent to the resource management server, and the content distribution server uses The private key signs the live broadcast stream, and slices the signed live broadcast stream.
  • the P2P client obtains the public key from the resource management server and uses the obtained public key to perform signature verification on the received P2P live stream to prevent P2P live broadcast.
  • the purpose of the flow is tampering; the embodiment of the present invention uses an asymmetric key algorithm to ensure that the content of the P2P live broadcast service is not maliciously falsified during the delivery process, and the P2P client does not need to go to the content publishing server in real time. Obtaining the check code can avoid a big impact on the performance of the P2P system.
  • FIG. 1 is a flowchart of a P2P live stream delivery method according to an embodiment of the present invention
  • FIG. 2 is a flowchart of another P2P live stream delivery method according to an embodiment of the present invention
  • a structural diagram of a digital signature device is provided;
  • FIG. 4 is a structural diagram of a P2P live stream delivery system according to an embodiment of the present invention
  • FIG. 5 is a structural diagram of a P2P client according to an embodiment of the present invention. detailed description
  • FIG. 1 is a schematic diagram of a P2P live stream delivery method according to an embodiment of the present invention, including: Step 101: A P2P content management system generates a public key and a private key pair of a digital signature algorithm. Step 102: The P2P content management system signs the source live stream according to the private key, and slices the signed source live stream, and sends the sliced live stream to the peer-to-peer client.
  • Step 103 The P2P content management system sends the public key to the peer-to-peer client, so that the peer-to-peer client uses the public key to perform signature verification on the received peer-to-peer live stream.
  • the P2P content management system completes the digital signature of the P2P live stream by the generation and distribution of the digital signature key, signature generation and signature verification, and prevents the P2P live stream from being transmitted.
  • the purpose of being tampered with Because the digital signature technology of the asymmetric key algorithm is used, it can ensure that the P2P live broadcast content of the P2P live broadcast service process will not be maliciously falsified during the transmission process, and the P2P client does not need to obtain the check code in the system in real time. Can avoid a big impact on the performance of P2P systems.
  • an embodiment of the present invention provides another method for transmitting a peer-to-peer live stream, including: Step 201: A digital signature device generates a key pair of a digital signature algorithm, and the private key is sent to a content publishing server, and the public key is sent to the public key. Resource management server.
  • the digital signature device Before performing the live channel distribution operation, the digital signature device can flexibly configure the digital signature type and the signature mode, wherein the types of the digital signature include: all message signatures, key frame signatures, frame header signatures or key frame header signatures; digital signatures
  • the methods include: digital signature algorithm, digital signature algorithm based on information-digest algorithm.
  • the configured digital signature type and signature method can be: Digital signature type: 0x00-no signature; 0x01-all message signature; 0x02-keyframe signature only; 0x03-frame header signature only; 0x04-keyframe only header signature .
  • a digital signature algorithm key pair is generated, such as an RSA key pair, and the private key is sent to the content distribution server, and the public key is sent to the resource management server.
  • the signature method is a digital signature algorithm based on the information-digest algorithm, an information-summary algorithm key, such as an MD5 key, is generated, and the information-summary algorithm key is simultaneously delivered to the content publishing server and the resource management server.
  • the content publishing server may be a P2P central media server CS-P, which is responsible for digital signature and slicing of the live stream.
  • the content publishing server further includes a P2P edge content server ES.
  • ES P2P edge content server
  • CS-P distributes the signed and sliced live broadcast stream to the P2P edge content server ES-P.
  • the ES P serves as the super node of the P2P network and provides service guarantee for the P2P client.
  • the resource management server is responsible for information maintenance of the Peer of the entire network node and scheduling of P2P client resources.
  • Step 202 The content distribution server performs a signature on the source live stream according to the private key, and slices the signed live broadcast stream, and delivers the sliced live stream to the peer-to-peer client.
  • the content publishing server obtains the source live stream from the live source, and signs the source live stream according to the configured digital signature type and signature mode. Signatures that can be combined according to signature type and signature method.
  • the class in the tooth can be shown in Table 1: Table 1 Combination of signature type and signature method
  • the content publishing server slices the signed source live stream and sends the sliced live stream to the peer-to-peer client.
  • Step 203 The client obtains the public account from the resource management server, and uses the obtained public key to perform signature verification on the received live stream.
  • the P2P client initiates a live broadcast request to the P2P portal
  • the P2P client requests the P2P resource list from the P2P resource management server, and the resource management server carries the public key in the response message according to the configured signature type and signature mode.
  • the signature mode is a digital signature algorithm based on the information-digest algorithm, such as the RSA over MD5 signature mode
  • the message-summary algorithm key such as the MD5 key, is also carried in the response message.
  • the P2P client receives the P2P live stream from the P2P edge content server ES-P or other P2P client according to the returned P2P resource list information.
  • the P2P client uses the obtained public key, such as the RSA public key, to perform signature verification on the received P2P live stream.
  • Step 204 If the signature verification fails, the P2P client records the parent node information of the P2P live stream, and reports it to the P2P content management system for alarm, and re-receives the P2P live stream from other parent nodes.
  • the P2P live stream delivery method generateds a digital signature by the content publishing server according to the private key to the source live stream through the generation and distribution of the digital signature key of the digital signature device, and the P2P client to the resource management server
  • the public key is obtained, and the digital signature of the received P2P live stream is signature verified to prevent the P2P live stream from being tampered with during the delivery process.
  • the digital signature technology of the asymmetric key algorithm is used, it can ensure that the P2P live broadcast content of the P2P live broadcast service process will not be maliciously falsified during the transmission process, and the P2P client does not need to obtain the verification in real time to the content publishing server.
  • the code can avoid a big impact on the performance of the P2P system.
  • the manner of digesting and re-signing the content to be encrypted may be firstly reduced, thereby reducing the performance loss caused by the introduction of the signature algorithm.
  • the P2P client may record the parent node information of the P2P live stream whose signature verification fails, and report it to the content management system for alarm, and if the signature verification fails, the P2P may be automatically received from other parent nodes. Live stream to protect user service and experience.
  • an embodiment of the present invention further provides a digital signature device, including: a signature key generation unit 301, configured to generate a public key and a private key pair of a digital signature algorithm; and a signature key issuing unit 302, And sending the private key to the content publishing server, so that the content publishing server signs the source live stream by using the private key, and slicing the signed source live stream; and placing the public key Sending to the resource management server, so that the P2P client obtains the public key from the resource management server and uses the public key to perform signature verification on the received point-to-point live stream.
  • a signature key generation unit 301 configured to generate a public key and a private key pair of a digital signature algorithm
  • a signature key issuing unit 3022 And sending the private key to the content publishing server, so that the content publishing server signs the source live stream by using the private key, and slicing the signed source live stream; and placing the public key Sending to the resource management server, so that the P2P client obtains the public key from the resource management server
  • the signature key generating unit 301 is further configured to generate an information-digest algorithm key, such as an MD5 key.
  • the signature key issuing unit 302 is further configured to send the information-summary algorithm key to the content publishing server, so that the content publishing server uses the information-summary algorithm key and the private key pair source
  • the live stream is signed; and the information-summary algorithm key is simultaneously sent to the resource management server, so that the P2P client obtains the information-summary algorithm key from the resource management server and uses the information-summary algorithm key
  • the public key performs signature verification on the received point-to-point live stream.
  • the digital signature device further includes:
  • a signature type configuration unit 303 is configured to configure a digital signature type.
  • the configured digital signature types include: All message signatures, key frame signatures, frame header signatures, or key frame header signatures.
  • the types of signatures that can be performed according to the signature type and signature method can be seen in Table 1 in the above table.
  • the digital signature device can be set either on the content management system CMS in the P2P construction or independently.
  • an embodiment of the present invention provides a P2P live stream delivery system, including:
  • the digital signature device 401 is configured to generate a public key and a private key pair of the digital signature algorithm, and the private key is sent to the content distribution server 402, and the public key is sent to the resource management server 403;
  • the content publishing server 402 is configured to sign the source live stream by using a private key, and slice the signed source live stream;
  • the resource management server 403 is configured to maintain and deliver the P2P client side key, so that the P2P client obtains the public key from the resource management server 403 and uses the public key to perform signature verification on the received P2P live stream.
  • the digital signature device 401 is further configured to generate an information-summary algorithm key, and simultaneously deliver the information-summary algorithm key to the content distribution server and the resource management server;
  • the content distribution server 402 is further configured to use the information-digest algorithm key and the private key to sign the source live stream;
  • the resource management server 403 is further configured to acquire the information-digest algorithm key from the P2P client to the resource management server, and perform signature verification on the received point-to-point live stream by using the information-digest algorithm key and the public key. .
  • the digital signature device 401 is further configured to configure a digital signature type; the configured digital signature type includes: all message signature, key frame signature, frame header signature or key frame header signature;
  • the content distribution server 402 is further configured to sign the source live stream according to the configured digital signature type.
  • an embodiment of the present invention further provides a P2P client, including:
  • a signature key obtaining unit 501 configured to acquire a digital signature algorithm public key
  • the method for obtaining the public key may be: the P2P client requests the P2P resource information list from the resource management server; and receives the request response message of the P2P resource information list returned by the resource management server, where the request response message carries the public key.
  • the signature verification unit 502 is configured to sign the received P2P live stream using the obtained digital signature algorithm public key.
  • the signature key acquisition unit 501 is further configured to acquire an information-digest algorithm key;
  • the signature verification unit 502 is further configured to perform signature verification on the received point-to-point live stream by using the obtained information-summary algorithm key and the digital signature algorithm public key.
  • the P2P client in the embodiment of the present invention further includes:
  • the alarm unit 503 is configured to record the parent node information of the P2P live stream when the signature verification fails, and report the alarm. as well as,
  • the live stream re-receiving unit 504 is configured to re-receive the P2P live stream from other parent nodes when the signature verification fails.
  • the embodiment of the invention introduces a digital signature technology in the P2P architecture to prevent the P2P live stream from being maliciously falsified, thereby enhancing the security of the P2P live broadcast.
  • the digital signature key pair is generated by the digital signature device, and the private key is sent to the content distribution server, and the public key is sent to the resource management server.
  • the content distribution server digitally signs and slices the source live stream, and the P2P client goes to the resource. Obtaining the signature public key on the management server and performing signature verification on the received P2P live stream can prevent the P2P live stream from being tampered with.
  • the digital signature technology of the asymmetric key algorithm is used, it is ensured that the P2P live stream content is not maliciously falsified during the delivery process of the P2P live stream, and the P2P client does not need to obtain the check code on the content publishing server in real time. It can avoid a big impact on the performance of P2P systems.
  • the information-summary algorithm key is generated by the digital signature device, and the method for performing the abstract re-signature of the content to be encrypted may be firstly reduced to reduce the performance loss caused by the introduction of the signature algorithm.
  • the P2P client can record the parent node information of the P2P live stream whose signature verification fails, and report it to the content management system for alarm, and can automatically receive the P2P live stream from other parent nodes to ensure User service and experience.
  • the embodiments of the present invention do not need to introduce independent functional components, and can be implemented by means of software plus a necessary general hardware platform, and thus will not be existing.
  • the P2P system architecture has an architectural impact. Based on such understanding, the technical solution of the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product stored in a storage medium. A number of instructions are included to cause a P2P content management system or P2P client to perform the methods described in various embodiments of the present invention.
  • the storage medium referred to herein is, for example, a ROM/RAM, a magnetic disk, an optical disk, or the like.

Abstract

L’invention concerne un procédé, un dispositif et un système de transmission d’une diffusion en flux en direct P2P qui peuvent empêcher une détérioration malveillante lors d’une transmission d’une diffusion en flux en direct P2P et permettre d’éviter de provoquer un grand choc au niveau des performances du système P2P. Selon ledit procédé, une paire de clefs, une clef publique et une clef privée, d’un algorithme de signature numérique est générée par un dispositif (401) de signature numérique, puis la clef privée est envoyée à un serveur (402) de diffusion de contenu et la clef publique est envoyé à un serveur (403) de gestion des ressources par ledit dispositif (401) de signature numérique. La source de la diffusion en flux en direct est signée en fonction de la clef privée, puis est découpée par le serveur (402) de diffusion de contenu; la diffusion en flux en direct est envoyée à un terminal (404) client poste à poste par le serveur (402) de diffusion de contenu; ladite clef publique est envoyée au terminal (404) client poste à poste par le serveur (403) de gestion des ressources; ladite clef publique est utilisée par le terminal (404) client poste à poste pour authentifier la signature de la diffusion en flux en direct poste à poste reçue. L’invention peut être utilisée dans un réseau P2P centralisé ou dans un réseau P2P distribué basé sur une structure CDN.
PCT/CN2009/072786 2008-09-04 2009-07-16 Procédé, dispositif et système de transmission d’une diffusion en flux en direct poste à poste WO2010025638A1 (fr)

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CN 200810146670 CN101667999B (zh) 2008-09-04 2008-09-04 点对点直播流传递的方法、系统、数据签名装置及客户端

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108600776A (zh) * 2017-09-15 2018-09-28 杭州趣看科技有限公司 安全播控的系统及方法
CN112672192A (zh) * 2020-12-28 2021-04-16 上海成思信息科技有限公司 一种iptv监管方法
CN114584798A (zh) * 2022-03-02 2022-06-03 深圳禾苗通信科技有限公司 私人订制直播方法、装置、计算机设备及存储介质

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101980500B (zh) * 2010-11-08 2013-11-13 中国电信股份有限公司 基于数字签名的点对点流量控制方法与系统
CN102868912A (zh) * 2012-08-16 2013-01-09 北京视博数字电视科技有限公司 基于cdn和p2p融合架构的媒体内容传输方法及系统
CN105429960A (zh) * 2015-10-29 2016-03-23 东莞酷派软件技术有限公司 一种对智能家居终端鉴权方法及装置
CN107370712A (zh) * 2016-05-11 2017-11-21 中兴通讯股份有限公司 一种码流篡改监控方法、装置及通信系统
CN110427781A (zh) * 2019-07-16 2019-11-08 浙江大华技术股份有限公司 媒体数据的防篡改方法、终端设备及存储介质
CN113453038B (zh) * 2021-06-25 2022-03-29 桂林电子科技大学 一种cdn-p2p混合架构下效用最优协同缓存管理方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1633068A (zh) * 2004-12-31 2005-06-29 北京中星微电子有限公司 一种点到点通信中的媒体流传输方法
CN1791215A (zh) * 2005-12-29 2006-06-21 清华大学 一种网络电视内容安全监管方法
CN101018129A (zh) * 2006-12-31 2007-08-15 华东师范大学 公共安全播控媒体管理与识别其完整未被篡改的认证方法
CN101247409A (zh) * 2008-03-21 2008-08-20 中国科学院电工研究所 一种基于p2p网络的直播流媒体的鉴权方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2357407A (en) * 1999-12-17 2001-06-20 Int Computers Ltd Cryptographic key replacement using key lifetimes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1633068A (zh) * 2004-12-31 2005-06-29 北京中星微电子有限公司 一种点到点通信中的媒体流传输方法
CN1791215A (zh) * 2005-12-29 2006-06-21 清华大学 一种网络电视内容安全监管方法
CN101018129A (zh) * 2006-12-31 2007-08-15 华东师范大学 公共安全播控媒体管理与识别其完整未被篡改的认证方法
CN101247409A (zh) * 2008-03-21 2008-08-20 中国科学院电工研究所 一种基于p2p网络的直播流媒体的鉴权方法

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108600776A (zh) * 2017-09-15 2018-09-28 杭州趣看科技有限公司 安全播控的系统及方法
CN108600776B (zh) * 2017-09-15 2021-09-03 杭州趣看科技有限公司 安全播控的系统及方法
CN112672192A (zh) * 2020-12-28 2021-04-16 上海成思信息科技有限公司 一种iptv监管方法
CN114584798A (zh) * 2022-03-02 2022-06-03 深圳禾苗通信科技有限公司 私人订制直播方法、装置、计算机设备及存储介质

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