RTT measurement method for inspecting the adjacency between devices, RTT measurement device, adjacency inspection method, proximity check devices, RTT measurement support method, recording medium and RTT measurement support device

摘要

A method of measuring round trip time (RTT) includes: chain-hashing at least one random number to create a plurality of hash values; (b) transmitting one of the created hash values to a device and starting to measure RTT of the device; and (c) receiving from the device a response to the transmitted hash value and ending the RTT measurement, thereby performing a more effective proximity check than a conventional proximity check requiring encryptions and decryptions of several tens of times through several thousands of times.