METHOD AND SYSTEM FOR UPDATING A SECRET KEY

摘要

A method for updating a secret key includes: a. the network side sets the prearranged value for the authentication management field AMF, and generates the corresponding authentication membered group, when sending the authentication requirement to the terminal, sends the corresponding parameter in the authentication membered group to the terminal, and generates a new authentication secret key to be used in the next authentication; b. when the terminal receives the authentication requirement and determines that the authentication for the network passes and the authentication management field AMF in the said corresponding parameter is the said special value, generates a new authentication secret key corresponding to the network side to be used in the next authentication. The method of updating a secret key of the invention expediently updates the secret key and advances the security of the network without adding or modifying the present signal resource or authentication parameter.