METHOD FOR AUTHENTICATING LOW EFFICIENCY DEVICE

摘要

The present invention relates to an authentication method for a low efficiency device and, more specifically, to a device authentication method capable of safely authenticating a device without a special authentication agency and capable of reducing the consumption amount consumed in the device authentication calculation by authenticating the low efficiency device such as the smart meter of the smart grid using a matrix calculation through a homomorphic hash function (HHF) of a non-square matrix (M). [Reference numerals] (AA) Authentication device;(BB) Managing server;(S1) Authentication device identifier;(S3) First random vector (C_MDMS);(S5) First group authentication request message, second random vector (C_SM);(S7) Encryption key vector (RESP_MDMS);(S9) Second group authentication request message