Information transmission method, device and terminal
A technology for information transmission and called terminals, which is applied in the field of communication, can solve the problems of large amount of calculation for mutual trust between CAs, and achieve the effects of ensuring the scope of application, reducing the amount of calculation, solving the problem of mutual trust between CAs and large amount of calculation
Pending Publication Date: 2022-04-15
CHINA MOBILE COMM LTD RES INST +1
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[0014] The purpose of the present invention is to provide an information transmission method, device and terminal to solve the problems of mutual trust between CAs and large amount of computation in the information transmission scheme for public keys in the prior art
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[0119] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.
[0120] The present invention aims at the problems of mutual trust between CAs and large amount of calculation in the information transmission scheme for the public key in the existing technology, and provides an information transmission method, which is applied to the calling terminal, such as figure 2 shown, including:
[0121] Step 21: Obtain the encrypted public key corresponding to the called terminal according to the block chain certificate corresponding to the called terminal;
[0122] Step 22: Obtain the calling message according to the encryption public key and the shared key, and send it to the called terminal.
[0123] The information transmission method provided by the embodiment of the present invention obtains the encrypted public key corr...
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The invention provides an information transmission method, device and terminal, and the method comprises the steps: obtaining an encryption public key corresponding to a called terminal according to a block chain certificate corresponding to the called terminal; and obtaining a calling message according to the encrypted public key and the shared key, and sending the calling message to the called terminal. According to the scheme, the information can be obtained according to the block chain certificate, so that the mutual trust problem among multiple CAs is avoided; in addition, according to the scheme, the calling message can be directly obtained according to the encrypted public key and the shared key, and the operation does not need to be performed by using an asymmetric key algorithm twice, so that the operation amount of public key transmission is reduced; the problems of mutual trust between CAs, large operand and the like existing in an information transmission scheme for a public key in the prior art are well solved.
Description
technical field [0001] The present invention relates to the field of communication technologies, and in particular to an information transmission method, device and terminal. Background technique [0002] IP-based multimedia communication (including IP-based voice transmission VoIP) has become the mainstream of real-time communication. Due to the connectionless and publicly accessible nature of IP networks, VoIP communications are vulnerable to various attacks, including the possibility of voice eavesdropping (breaking confidentiality) and voice data tampering (breaking integrity). For this, a series of standards have been developed to ensure the security of VoIP communication: [1] defines the SRTP (secure real-time transport protocol) to encrypt and process RTP (real-time transport protocol) or RTCP (real-time transport control protocol) packets carrying multimedia Integrity protection; [2] designed a protocol framework for VoIP communication parties to establish a shared ...
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IPC IPC(8): H04L9/32H04L9/08H04L9/40H04L67/10H04M7/00
Inventor 刘福文杨波王珂阎军智粟栗
Owner CHINA MOBILE COMM LTD RES INST