TY  - JOUR
T1  - A Hybrid RBAC and Chaos Access (HRCA) Control Mechanism for
Cloud Computing Environment
AU - Venifa Mini, G. AU - Angel Viji, K.S. 
JO  - Journal of Engineering and Applied Sciences
VL  - 12
IS  - 24
SP  - 7619
EP  - 7632
PY  - 2017
DA  - 2001/08/19
SN  - 1816-949x
DO  - jeasci.2017.7619.7632
UR  - https://makhillpublications.co/view-article.php?doi=jeasci.2017.7619.7632
KW  - Access control
KW  -cloud
KW  -chaos
KW  -privacy
KW  -expression
KW  -flexibility
AB  - Access control techniques are the very important aspect of cloud architecture, through which data
publishing can be regulated to the legitimate users. But at the same time it should not consume huge
computational load which may burden the user. In the conventional approach, the data is encrypted as per the
access structure and the user able to decrypt only the attribute set matches. However, they require huge
computational requirement in terms of space and processing capability. Problem such as preventing cloud
server from learning user access privilege related information is also important. Providing support to a
continuously varying user dynamics with dynamic user grant and revocation is essential. In Hybrid RBAC and
Chaos Access (HRCA) control mechanism, the control is employed over an already encrypted data. Also, the
user is allowed to access the data based on the access structure assigned to his role at the server itself. It will
warrant security from non-trustable servers. This scheme is implemented on a three layered approach by
separating key manager from cloud server, in order to remove key escrow and arbitrary-state attribute
expression parities in existing methods. To ensure greater flexibility in case of emergency, a break-the-glass data
access approach also included for data availability without any denial of service. Simulation result shows that
the approach derive minimal disk space, processing time, access delay time, energy expenditure and cost than
RBAC, MAC, DAC.
ER  -