Method for acquiring application sharing key of non-SIM terminal

Abstract

The invention discloses a method for acquiring an application shared key of a non-SIM terminal, relates to the technical field of communication security, and solves the technical problem of communication between the non-SIM terminal and an application server. According to the method, a secret key generator with an SIM card is used for communicating with a security server to generate a shared secret key Ks and a secret key index Ks _ ID of the secret key generator and the security server; then, the key generator and the security server generate a secret key Ka and a secret key index Ka _ ID forthe non-SIM terminal, and the non-SIM terminal obtains a Ka ciphertext from the key generator and decrypts the Ka ciphertext to obtain a key secret Ka and a key secret index Ka _ ID; and the non-SIMterminal sends the plaintext secret key index Ka _ ID to the application server; the application server queries the security server through the secret key index Ka _ ID to obtain the secret key Ka; and the non-SIM terminal and the application server can perform data communication by using the secret key Ka. According to the method provided by the invention, the M2M terminal without the SIM card can communicate with the application server through the application layer shared secret key.

Description

technical field [0001] The present invention relates to communication security technology, in particular to a non-SIM terminal application shared key acquisition method. Background technique [0002] Authentication and communication privacy between the terminal and the application server often rely on the existence of a shared key between the two. For mobile terminals, since the SIM card and HLR / HSS have built in the same key in advance, there are corresponding methods (such as the GBA mechanism of 3GPP) to generate the above-mentioned application layer shared key based on this key. [0003] However, M2M (Machine-to-Machine) terminals without a SIM card have no way to communicate with the application server through the application layer shared key. exposed to installers) to communicate with the application server. Contents of the invention [0004] In view of the above-mentioned defects in the prior art, the technical problem to be solved by the present invention is to p...

AI Technical Summary

Problems solved by technology

[0003] However, M2M (Machine-to-Machine) terminals without a SIM card have no way to communicate with the application server through the application layer shared key. exposed to the installer) to communicate with the application server