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A source authentication method applied in multicast communication system

A communication system and source authentication technology, applied in the field of source authentication, can solve the problem of source authentication that cannot achieve multicast, and achieve the effects of resisting man-in-the-middle attacks, good loss resistance, and good scalability

Inactive Publication Date: 2008-06-04
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Purely using symmetric key technology, such as only using symmetric key information authentication codes to authenticate information sources, is currently impossible to achieve multicast source authentication

Method used

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  • A source authentication method applied in multicast communication system
  • A source authentication method applied in multicast communication system
  • A source authentication method applied in multicast communication system

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Embodiment Construction

[0018] The source authentication method applied in the multicast communication system disclosed by the present invention is a source authentication method based on asymmetric key technology, and integrates some existing technical means, such as: Diffie-Hellman key exchange algorithm, a single Hash algorithm, RSA public key algorithm, etc.

[0019] The present invention will be described in detail below in conjunction with the accompanying drawings and examples.

[0020] The source authentication method applied in the multicast communication system provided by the present invention includes two steps:

[0021] 1. Provide an identification number for each member participating in the multicast communication, and perform two-way authentication between the multicast client and the authentication center during the multicast communication process;

[0022] 2. When the multicast information is transmitted, the source authentication scheme based on the event sequence is used to perfor...

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Abstract

The invention discloses a source attesting method used in multicast communication system. The technical project: providing an ID for each member taking part in multicast communication to make two-way attestation between multicast client and attestation center, and determining transmission secret key and client public and secret keys of each communication part; as transmitting multicast information, adopting source attestation solution based on event sequence to make signature attestation on the transmitted information, and assuring the transmitter of the multicast information is its declared transmitter. The technical project of the invention has the character of low cost, good extendability, fast attestation, good loss preventing property, etc, and can effectively raise the efficiency of low-end receiver in multicast application.

Description

technical field [0001] The invention relates to a source authentication method applied in a multicast communication system, which belongs to the technical field of computer security. Background technique [0002] The existing multicast communication system is an open communication system, which is characterized by: the information source is determined, and the information destination is clear but not specific, that is, at any time, there must be an information source among the hosts participating in a multicast system, but the It is usually not fixed, or even has zero destinations; moreover, the multicast communication system does not provide a data source identification service mechanism, so that any host can send data to any multicast group. This means that any host can mix the multicast data of the source host or pretend to be the multicast data of the source host, which is an extremely serious problem in the multicast security of the current multicast communication syste...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/32
Inventor 吴威李肖坚沈玲
Owner BEIHANG UNIV
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