S.Monika,
K.Savima
1PG Student STET Women’s college, mannargudi
2Professor of IT department, STET Women’s college,
mannargudi
Privacy, trust and access control are some of
the security concepts in the Cloud systems. Access control is of vital importance
in a Cloud environment since it is concerned with allowing a user to access a
number of Cloud resources. The data access control is an effective way to
ensure the data security in the cloud. Due to data outsourcing and untrusted
cloud servers, the data access control becomes a challenging issue in cloud
storage systems. It is important to protect the data and privacy of users.
Cipher text-Policy Attribute based Encryption (CP-ABE) is regarded as one of
the most suitable technologies for data access control in cloud storage,
because it gives data owners more direct control on access policies. It is
difficult to directly apply existing CP-ABE schemes to data access control for
cloud storage systems because of the attribute revocation problem. Design an expressive, efficient and revocable
data access control scheme for multi-authority cloud storage systems, where there
The Authority in CP-ABE scheme is responsible for attribute management and key
are multiple authorities co-exist and each authority is able to issue
attributes independently. The Authority in CP-ABE scheme is responsible for
attribute management and key distribution. Propose a revocable multi-authority
CP-ABE scheme, and apply it as the underlying techniques to design the data
access control scheme. Attribute revocation method can efficiently achieve both
forward security and backward security. The analysis and simulation results
show that the proposed data access control scheme is secure in the random model
and is more efficient.
