Patent ID: 9042544
Filing Date: 2015-05-26
Classification: H04L

Abstract:
1. A secret key generation apparatus comprising: at least one antenna configured to receive a wireless signal from a counterpart terminal that performs wireless communication; amplification/phase controllers configured to control amplification gain and phase of the wireless signal that is received via the at least one antenna; a transceiver configured to measure status of a wireless channel using the wireless signal having the controlled amplification gain and phase, to determine parameters based on results of the measurement, and generate a secret key based on results of the determination; and a random signal controller configured to control the amplification/phase controllers so that the amplification gain and phase are adjusted whenever the transceiver generates a secret key, wherein the transceiver comprises: a transmission/reception controller configured to perform control so that the secret key generation apparatus operates in transmitter mode or receiver mode; and a key generation controller configured to control the parameters that are used to generate the secret key, and wherein the key generation controller determines whether to perform key pairing that determines whether the secret key or a hash value derived from the secret key is identical with a secret key or a hash value generated by the counterpart terminal, and controls the parameters based on results of the key pairing.