Method for determining cryptographic key in network in area of mobile communication, involves determining channel information relative to transmission channel based on pilot signal and determining cryptographic key using channel information

摘要

The method involves determining a channel information in relation to a transmission channel (112,114) based on a pilot signal, which represents a signal that is transmitted by the network nodes (106) and transmitted through the transmission channel and received by a network element (102). The cryptographic key is determined using the channel information and a combined information transmitted to the network element, which represents a combination of transmission characteristics of the two transmission channels. Independent claims are included for the following: (1) a method for supporting determination of a symmetric cryptographic key in a network; (2) a device for determining a cryptographic key in a network and for supporting determination of symmetric cryptographic key; and (3) a computer program product with program code for determining a cryptographic key in a network.