IDENTITY AUTHENTICATION METHOD, IDENTITY AUTHENTICATION SYSTEM, TERMINAL AND SERVER

摘要

Proposed are an identity authentication method, an identity authentication system, a terminal and a server. The identity authentication method comprises: acquiring first biological characteristic information about a pre-set user; and expressing at least one piece of first attribute information of the first biological characteristic information in a vector form and carrying out homomorphic encryption processing on the at least one piece of first attribute information, which is expressed in the vector form, according to a pre-set key pair, so as to generate a first biological characteristic vector; and sending the first biological characteristic vector to the server and storing the first biological characteristic vector as a first biological characteristic template vector by the server. The solution realizes safety storage and efficient authentication of biological characteristic information about a user.