Error message

  • Notice: Undefined offset: 223 in user_node_load() (line 3697 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Trying to get property 'name' of non-object in user_node_load() (line 3697 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Undefined offset: 223 in user_node_load() (line 3698 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Trying to get property 'picture' of non-object in user_node_load() (line 3698 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Undefined offset: 223 in user_node_load() (line 3699 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Trying to get property 'data' of non-object in user_node_load() (line 3699 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Undefined offset: 235 in user_node_load() (line 3697 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Trying to get property 'name' of non-object in user_node_load() (line 3697 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Undefined offset: 235 in user_node_load() (line 3698 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Trying to get property 'picture' of non-object in user_node_load() (line 3698 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Undefined offset: 235 in user_node_load() (line 3699 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Trying to get property 'data' of non-object in user_node_load() (line 3699 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Undefined offset: 223 in user_node_load() (line 3697 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Trying to get property 'name' of non-object in user_node_load() (line 3697 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Undefined offset: 223 in user_node_load() (line 3698 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Trying to get property 'picture' of non-object in user_node_load() (line 3698 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Undefined offset: 223 in user_node_load() (line 3699 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Trying to get property 'data' of non-object in user_node_load() (line 3699 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Undefined offset: 235 in user_node_load() (line 3697 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Trying to get property 'name' of non-object in user_node_load() (line 3697 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Undefined offset: 235 in user_node_load() (line 3698 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Trying to get property 'picture' of non-object in user_node_load() (line 3698 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Undefined offset: 235 in user_node_load() (line 3699 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Trying to get property 'data' of non-object in user_node_load() (line 3699 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Undefined offset: 223 in user_node_load() (line 3697 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Trying to get property 'name' of non-object in user_node_load() (line 3697 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Undefined offset: 223 in user_node_load() (line 3698 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Trying to get property 'picture' of non-object in user_node_load() (line 3698 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Undefined offset: 223 in user_node_load() (line 3699 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Trying to get property 'data' of non-object in user_node_load() (line 3699 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Undefined offset: 223 in user_node_load() (line 3697 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Trying to get property 'name' of non-object in user_node_load() (line 3697 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Undefined offset: 223 in user_node_load() (line 3698 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Trying to get property 'picture' of non-object in user_node_load() (line 3698 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Undefined offset: 223 in user_node_load() (line 3699 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Trying to get property 'data' of non-object in user_node_load() (line 3699 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Undefined offset: 223 in user_node_load() (line 3697 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Trying to get property 'name' of non-object in user_node_load() (line 3697 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Undefined offset: 223 in user_node_load() (line 3698 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Trying to get property 'picture' of non-object in user_node_load() (line 3698 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Undefined offset: 223 in user_node_load() (line 3699 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Trying to get property 'data' of non-object in user_node_load() (line 3699 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Undefined offset: 223 in user_node_load() (line 3697 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Trying to get property 'name' of non-object in user_node_load() (line 3697 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Undefined offset: 223 in user_node_load() (line 3698 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Trying to get property 'picture' of non-object in user_node_load() (line 3698 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Undefined offset: 223 in user_node_load() (line 3699 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Trying to get property 'data' of non-object in user_node_load() (line 3699 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Undefined offset: 223 in user_node_load() (line 3697 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Trying to get property 'name' of non-object in user_node_load() (line 3697 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Undefined offset: 223 in user_node_load() (line 3698 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Trying to get property 'picture' of non-object in user_node_load() (line 3698 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Undefined offset: 223 in user_node_load() (line 3699 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Trying to get property 'data' of non-object in user_node_load() (line 3699 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Undefined offset: 223 in user_node_load() (line 3697 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Trying to get property 'name' of non-object in user_node_load() (line 3697 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Undefined offset: 223 in user_node_load() (line 3698 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Trying to get property 'picture' of non-object in user_node_load() (line 3698 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Undefined offset: 223 in user_node_load() (line 3699 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Trying to get property 'data' of non-object in user_node_load() (line 3699 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Undefined offset: 223 in user_node_load() (line 3697 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Trying to get property 'name' of non-object in user_node_load() (line 3697 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Undefined offset: 223 in user_node_load() (line 3698 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Trying to get property 'picture' of non-object in user_node_load() (line 3698 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Undefined offset: 223 in user_node_load() (line 3699 of /home/tcipgpro/public_html/modules/user/user.module).
  • Notice: Trying to get property 'data' of non-object in user_node_load() (line 3699 of /home/tcipgpro/public_html/modules/user/user.module).

Attribute-Based Messaging: Access Control and Confidentiality

Bobba, R., Fatemieh, O., Khan, F., Khan, A., Gunter, C. A., Khurana, H., Prabhakaran, M.
Citation:

ACM Transactions on Information and System Security 13, 4, Article 31, 35 pages, December 2010.

Visit Publisher Online Entry:
Abstract:

Attribute-Based Messaging (ABM) enables messages to be addressed using attributes of recipients rather than an explicit list of recipients. Such messaging offers benefits of efficiency, exclusiveness, and intensionality, but faces challenges in access control and confidentiality. In this article we explore an approach to intraenterprise ABM based on providing access control and confidentiality using information from the same attribute database exploited by the addressing scheme. We show how to address three key challenges. First, we demonstrate a manageable access control system based on attributes. Second, we demonstrate use of attribute-based encryption to provide end-to-end confidentiality. Third, we show that such a system can be efficient enough to support ABM for mid-size enterprises. Our implementation can dispatch confidential ABM messages approved by XACML policy review for an enterprise of at least 60,000 users with only seconds of latency.

Publication Status:
Published
Publication Type:
Journal Article
Publication Date:
12/01/2010
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