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In-band secret key negotiation transmission method and system

A key negotiation and transmission method technology, which is applied in the field of in-band key negotiation transmission method and transmission system, can solve the problem that it is difficult to ensure that both ends of the key negotiation succeed in negotiation at the same time, affect the key negotiation success rate, and key negotiation transmission failure Steps and other issues, to achieve reliable key agreement, convenient application, and solve the effect of low efficiency

Active Publication Date: 2018-07-10
中电科网络安全科技股份有限公司
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Problems solved by technology

[0003] In the existing out-of-band key negotiation, because the key negotiation is carried in the control signaling, the transmission channel of the control signaling is a non-transparent transmission channel, and the transmission will go through multiple routing and forwarding, and many control devices pass through, resulting in the control signal The key negotiation data in the command is modified and filtered, which seriously affects the success rate of the key negotiation; when the existing in-band key negotiation technology ensures reliable transmission, it often only transmits one packet and confirms one packet. , and then transmit the next packet, the processing is relatively simple and the transmission efficiency is low. In addition, for multi-step key negotiation, there is a problem of out-of-synchronization of key negotiation and transmission, and it is difficult to ensure that both ends of the key negotiation succeed at the same time.

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Embodiment Construction

[0047] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0048] Such as figure 1 As shown, Embodiment 1 of the present invention provides an in-band key negotiation transmission method, which is applied to both the local end and the peer end. The local end and the peer end are only used to distinguish the two ends of the key negotiation. and the opposite end can be interchanged. When this method is applied to an end named opposite end, the end named opposite end is the local end referred to in the method, and the end named local end is the opposite end referred to in the method. The methods specifically include:

[0049] S1: The local end generates the No. 0 to No. N transmission packets from the key agreement message to be transmitted. Among them, No. N-1 transmission packet an...

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Abstract

The invention relates to an in-band secret key negotiation transmission method and system, and belongs to the technical field of mobile communications. A secret key negotiation message generates a transmission packet in a local end and an opposite end, the transmission packet is sent and received, and transmission packet sending, transmission packet receiving and an ending state are controlled. The problems that a present in-band secret key negotiation transmission method is low in efficiency and out of synchronism in secret key negotiation is solved, the two ends of secret key negotiation canmake secret key negotiation effectively and reliably, the synchronism of secret key negotiation is ensured, and the transmission method and system can be used more conveniently due to being dependentfrom a network access manner.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to an in-band key negotiation transmission method and a transmission system. Background technique [0002] Key negotiation refers to the negotiation between two or more entities to jointly establish a session key. Any participant can affect the result without any trusted third party. The key negotiation channel is mainly divided into out-of-band negotiation and in-band negotiation. Out-of-band negotiation means that the key negotiation data is transmitted through the control signaling channel to complete the key negotiation function; in-band negotiation means that the key negotiation data is transmitted through the media channel. Carry out transmission and complete the key negotiation function. During out-of-band negotiation, the control protocol is mainly responsible for negotiating the reliable transmission of signaling. During in-band negotiation, since there is no ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/16H04L9/08H04L29/06
CPCH04L1/1635H04L9/0838H04L63/061
Inventor 陈强陈志辉吴海波刘成王俊人古恒杏运
Owner 中电科网络安全科技股份有限公司
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