International Conference in Distributed Computing and Internet Technology 2013 |
Foundation of Computer Science USA |
ICDCIT - Number 1 |
January 2013 |
Authors: Nishant Doshi, Devesh Jinwala |
6c5f6918-534a-4015-a1eb-b14051003e48 |
Nishant Doshi, Devesh Jinwala . Updating Attribute in CP-ABE: A New Approach. International Conference in Distributed Computing and Internet Technology 2013. ICDCIT, 1 (January 2013), 23-28.
In Ciphertext-Policy Attribute Based Encryption (CP-ABE), attributes are attached to the user's secret key and access policy is attached to the ciphertext. If attributes in the secret key of a user satisfy the policy then only the user can decrypt the ciphertext. However, such scenario also necessitates periodic updating of the secret key with the changing attributes. According to our observations, the existing attempts at doing so are not efficient. In this paper, we propose a new approach to add, update or delete the value of a particular attribute efficiently without the knowledge of the other attributes.