SYSTEM AND METHOD FOR SECURITY AUTHENTICATION OF POWER SYSTEM

• US 20140149736A1
• Filed: 09/27/2013
• Published: 05/29/2014
• Est. Priority Date: 11/28/2012
• Status: Active Grant

• Current Assignee: LSIS Co. Ltd. (LS Corporation)
• Original Assignee: LSIS Co. Ltd. (LS Corporation)
• Inventors: CHOI, Won Seok, PARK, Jong Ho, SHIN, Yong Hark
• Granted Patent: US 9,054,878 B2
• Time in Patent Office: Days
• US Class Current: 713/156
• CPC Class Codes: H04L 63/0428 wherein the data content is protected, e.g. by encrypting or encapsulating the payload
• CPC Class Codes: H04L 63/0823 using certificates cryptographic mechanisms or cryptographic arrangements for entity authentication involving certificates H04L9/3263
• CPC Class Codes: H04L 9/0825 using asymmetric-key encryption or public key infrastructure [PKI], e.g. key signature or public key certificates
• CPC Class Codes: H04L 9/3263 involving certificates, e.g. public key certificate [PKC] or attribute certificate [AC]; Public key infrastructure [PKI] arrangements network architectures or network communication protocols for supporting authentication of entities using certificates in a packet data network H04L63/0823

Abstract

A method for security authentication of a power system includes transmitting, by at least one power system, a signal for requesting performing authentication on at least one remote control server or an external terminal with which the power system is to perform communication, to an authentication server, receiving, by the power system, an authentication certificate generated by the authentication server, and perform authentication on the remote control server or the external terminal by using the authentication certificate, and when authentication is completed by the authentication server, performing communication, by the power system, with the authentication-completed remote control server or the external terminal through an open-type communication network.

Claims

1. A method for security authentication of a power system, the method comprising:

transmitting, by at least one power system, a signal for requesting performing authentication on at least one remote control server or an external terminal with which the power system is to perform communication, to an authentication server;

receiving, by the power system, an authentication certificate generated by the authentication server, and perform authentication on the remote control server or the external terminal by using the authentication certificate; and

when authentication is completed by the authentication server, performing communication, by the power system, with the authentication-completed remote control server or the external terminal through an open-type communication network.

2. The method of claim 1, wherein the performing of authentication by using the authentication certificate comprises:

receiving the authentication certificate generated by the authentication server;

performing communication authentication with a server of a communication target by using the authentication certificate;

sharing a symmetric key with the authentication-completed remote control server;

encrypting data desired to be transmitted by using the symmetric key;

transmitting the encrypted data; and

decrypting, by the remote control server, the received encrypted data by using the shared symmetric key to obtain the data.

3. The method of claim 2, wherein the receiving of the authentication certificate generated by the authentication server comprises:

transmitting a public key to the authentication server; and

receiving, by the authentication server, the authentication certificate generated by using the public key.

4. The method of claim 2, wherein the sharing of the symmetric key with the remote control server comprises:

receiving a public key from the remote control server;

encrypting the symmetric key by using the received public key; and

transmitting the encrypted symmetric key to the corresponding remote control server.