Method for producing shared secrete between nodes in H.323 multimedia communications system
A multimedia communication, H.323 technology, applied to the usage of multiple keys/algorithms, etc., can solve the problems of frequent encryption/decryption, and achieve the effect of reducing the processing load
Inactive Publication Date: 2010-12-01
ZTE CORP
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The purpose of the present invention is to provide a kind of method that produces shared secret among the nodes of H.323 multimedia communication system, in order to overcome above-mentioned existing 3rd kind of method that the shared secret produced in different nodes needs to be frequently added / The shortcomings of decryption, a new method of generating shared secrets between non-adjacent nodes in the H.323 system is proposed
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A method for generating shared secret among nodes of the H.323 multimedia communication system includes: a first node generates several first private values and a first public value, a second node generates several second private values and a second public value, if the first node can find out the first function, the second node can find out the second function to make the first function with thesecond public value and the first private value as the parameters the same with the second function with the first public value and the second private value as the parameters, then the first node gets the second public value of the second node and the second node gets the first public value of the first node then to compute that the shared secrete between the first and the second nodes is the first function value with the second public value and the first private value as the parameters.
Description
Method of Generating Shared Secret among Nodes of H.323 Multimedia Communication System technical field The invention relates to a method for generating a shared secret in a communication system, in particular to a method for generating a shared secret between two non-directly adjacent nodes in the field of ITU-TH.323 multimedia communication systems. Background technique The H.323 multimedia communication system is composed of gatekeepers, terminals, gateways, multipoint control units and other nodes. In order to guarantee the security of the H.323 multimedia communication system, ITU-T has formulated the H.235 standard. The H.235 standard requires authentication or integrity protection for RAS (registration, access, and status), Q.931 (call), and H.245 (call control) signaling in the H.323 system, and encrypted transmission of media streams , which requires a shared secret between nodes for authentication or integrity protection. Figure 1 shows the logical networking ...
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IPC IPC(8): H04L9/14
Inventor 李远威陈剑勇丁鹏
Owner ZTE CORP