KEY VALIDITY VERIFYING METHOD AND SEVER FOR PERFORMING THE SAME
摘要
PURPOSE: A method for verifying key validity and a sever for performing the same are provided to reduce necessary operation times for verifying key validity in a signature process or a signature verification process by providing various services based on anonymous authentication. CONSTITUTION: An anonymous authentication server(110) revokes an anonymous secret key owned currently(S810). The anonymous authentication server is opened by generating a revocation list(S820). A service providing server(120) generates a LRL(Local Revocation List) by using a revocation list and its own LL secret key(S830). The service providing server calculates a virtual index of a service user through the signature of a service user(S840). The service providing server verifies the validity of a key of the service user based on the presence of the virtual index included in the local revocation list(S850).
申请公布号
KR20120069447(A)
申请公布日期
2012.06.28
申请号
KR20100131001
申请日期
2010.12.20
申请人
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
发明人
LEE, SOK JOON;HWANG, JUNG YEON;BAE, GUN TAE;CHUNG, BYUNG HO;KIM, SIN HYO;MUN, HYE RAN;LEE, SANG WOO;LEE, YUN KYUNG;CHO, HYUN SOOK