Patent ID: 8918635
Filing Date: 2014-12-23
Classification: H04L

Abstract:
1. An apparatus for generating a key for access control of content in a distributed environment network, the apparatus comprising: a first key distributor configured to generate first encrypted keys by encrypting a first key corresponding to a key for write authorization using each public key of members having write authorization among members included in an access control list including information of at least one user and information about access authorization and distribute the access control list and the first encrypted keys to the members having write authorization; and a second key distributor configured to generate second encrypted keys by encrypting a second key corresponding to a key for read authorization, using each public key of members having read authorization among members included in the access control list and distribute the access control list and second encrypted keys to the members having read authorization, wherein the second key is generated using the first key, and the first key is neither generated nor predicted using the second key.