The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 21, 2013
Filed:
May. 25, 2010
Jong-hyouk Noh, Daejeon, KR;
Deokjin Kim, Daejeon, KR;
Soo Hyung Kim, Daejeon, KR;
Seung-hyun Kim, Daejeon, KR;
Sang Rae Cho, Daejeon, KR;
Young Seob Cho, Daejeon, KR;
Jin-man Cho, Daejeon, KR;
Dae Seon Choi, Daejeon, KR;
Seung Hun Jin, Daejeon, KR;
Jong-Hyouk Noh, Daejeon, KR;
DeokJin Kim, Daejeon, KR;
Soo Hyung Kim, Daejeon, KR;
Seung-Hyun Kim, Daejeon, KR;
Sang Rae Cho, Daejeon, KR;
Young Seob Cho, Daejeon, KR;
Jin-Man Cho, Daejeon, KR;
Dae Seon Choi, Daejeon, KR;
Seung Hun Jin, Daejeon, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Abstract
A key tree construction and key distribution method for hierarchical role-based access control, includes: constructing a key tree including relationships between a hierarchical structure of role groups and data; performing encryption and decryption of data keys and role keys; and generating a key table, in which the data keys required to decrypt encrypted data and the role keys required to decrypt encrypted data keys are stored, with reference to the key tree. Further, the key tree construction and key distribution method for hierarchical role-based access control includes performing management such that a specific role group can obtain a data key by performing decryption based on its own role key by using both the key tree and the key table.