Security authentication method, apparatus and system for digital currency transaction

Abstract

The present application relates to the technical field of computers. A security authentication method, apparatus and system for a digital currency transaction. A specific embodiment of the method includes: a first terminal device storing a first certificate issued by a digital currency issuing end and second certificates issued by one or more digital currency operation ends; the first terminal device receiving a third certificate sent by a first digital currency operation end, and performing signature verification on the third certificate by using a second certificate, which is issued by the first digital currency operation end and passes signature verification; and after the third certificate passes the signature verification, the first terminal device performing a digital currency transaction with the first digital currency operation end and/or a second terminal device, wherein the second terminal device stores a fourth certificate sent by a second digital currency operation end. By means of the embodiment, mutual authentication and secure communication between a digital currency operation end and a terminal device and between different terminal devices can be realized, thereby avoiding potential security hazards such as information stealing, information leakage and illegitimate access.