ENCRYPTION KEY NEGOTIATION METHOD, SYSTEM AND EQUIPMENT IN THE ENHANCED UNIVERSAL VERIFY FRAME

摘要

A method of Encryption key negotiation in the enhanced universal verify frame is applied in the communication derived key negotiation between the NAF and the subscriber thereof, which includes: the peripheral terminal device requests the derived key from UE, the request carries on the peripheral terminal device tag; UE computes the first derived key according to the shared key with BSF and the peripheral terminal device tag; the network side computes the second derived key according to the shared key which shared by UE and BSF and the peripheral terminal device tag obtained, and the second derived key is memorized by NAF. The encryption key negotiation system and equipment are also provided in the present invention. It can realize which the GBA subscriber side is in the UE, while NAF subscriber is in the other peripheral terminal device, NAF subscriber and NAF negotiate the key.