Safety multicast source authentication method based on group data packet coupling

An authentication method and secure multicast technology, applied in the field of network communication, can solve problems such as information redundancy

Active Publication Date: 2014-07-30
SOUTHWEAT UNIV OF SCI & TECH
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Problems solved by technology

[0006] Communication cost: that is, each packet ...

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  • Safety multicast source authentication method based on group data packet coupling
  • Safety multicast source authentication method based on group data packet coupling
  • Safety multicast source authentication method based on group data packet coupling

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Embodiment Construction

[0041] Specific embodiments of the present invention will be described below in conjunction with the accompanying drawings, so that those skilled in the art can better understand the present invention. It should be noted that in the following description, when detailed descriptions of known functions and designs may dilute the main content of the present invention, these descriptions will be omitted here.

[0042] figure 1 It is a schematic diagram of the security multicast source authentication method based on packet data packet matching in the present invention.

[0043] In this example, if figure 1 As shown, all data packets and their groups are used as nodes to carry out hash calculations. In this embodiment, MD5 is used to obtain the corresponding summary value and joint summary value H mi 、H 5 , sign the node at the root of the tree to get the root signature S sig . The root signature of the tree chain is performed using 128-byte RSA (RSA: public key encryption algo...

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Abstract

The invention provides a safety multicast source authentication method based on group data packet coupling for solving the disadvantages of overlarge communication cost of a basic Merkle Hash tree source authentication mode. Through dividing a data packet into four groups, intergroup data packets are attached to Hash values, i.e., digest values, and bit packets are arranged. The method provided by the invention can effectively reduce the communication cost and calculation cost which are based on a tree chain source authentication method and ensures that a verification ratio is not greatly decreased. Though an authentication delay which changes correspondingly is generated at a receiving end, multiple threads and multiple data packet can be employed, and at the same time, transmission and authentication are carried out in an orderly mode. Generally speaking, under the condition that a transceiving end channel satisfies a corresponding actual environment and server configuration, the method provided by the invention has the advantages of quite good packet loss resistance robustness and quite low communication cost.

Description

technical field [0001] The invention belongs to the technical field of network communication, and more specifically relates to a method for authenticating a secure multicast source based on packet data packet matching, which is mainly applied to multicast streaming media, such as P2P streaming media networks, video conferencing, and network voice broadcasting etc. source certification. Background technique [0002] Multicast (multicast) is an information dissemination mode for multi-point transmission and reception applied to the Internet. Multicast can effectively improve the efficiency and accuracy of sending and receiving information between users, and transmit a larger amount of data with less bandwidth loss. For example, it has a wide range of applications in video conferencing and stock real-time information release. [0003] Multicast currently mainly includes two major issues: group key management and multicast source authentication. Group key management is mainly ...

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Application Information

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IPC IPC(8): H04L9/32H04L12/761H04L45/16
Inventor 邢玲马强何燕玲黄河
Owner SOUTHWEAT UNIV OF SCI & TECH
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