METHOD AND APPARATUS FOR AUTHENTICATION USER IN MULTIPARTY QUANTUM COMMUNICATIONS

摘要

in the quantum communication made through the N users, a method and apparatus for performing a user on the quantum communication provided. The user authentication method in a multi-party quantum communication according to an embodiment of the present invention, N users, the user first creates a number of quantum entanglement state comprised of N particles of the user's (N is a natural number greater than 2) of transmitting a first number of particles corresponding to each of the users; The step of determining whether both the communication server based on the first error rate computed using the secret key of each user is stored in any selected second number of particles and particle groups having in the stomach of the attacker of the N users; And the quantum communication server characterized in that it comprises a step for controlling to replace the secret key to create a new private key previously stored by the user in each of the arbitrary number of particles in the particle selected third. ;