Two factor protection for accessing data using efficient revocation in cloud storage system
Anusha S,  Deepika N
cloud storage is similar to the model of the computer data storage in which the digital data is stored in logical pools. The cloud storage provider are responsible for keeping the data available and accessible to the authorized user and the physical environment protected and running. Attribute based encryption is one of the public key encryption in which the developed secret key of the user and the cipher text are depended upon attributes provided .In such system the decryption of the cipher text is only possible if the set of attributes of a user key matches the attributes of the cipher text.The user attributes may be issued by multiple attribute authorities because of this reason multiple authority cipher text policy attributed encryption is an upcoming cryptographic primitives for enforcing attribute based access control on the data. Now a days most of the multi authority attribute based system either insecure in attribute level revocation or lack of efficiency in communication over head and computation cost. In this paper we deal with this problem .We propose scheme which uses constant size cipher text and small computation cost. The scheme also allows the data owner to carry out the user level revocation.
Keywords- Attribute-based encryption, multi-authority cloud storage, two-factor data protection,attribute level revocation,user level revocation
Unique Identification Number - IJEDR1902040Page Number(s) - 199-200Pubished in - Volume 7 | Issue 2 | May 2019DOI (Digital Object Identifier) -    Publisher - IJEDR (ISSN - 2321-9939)
Cite this Article
Anusha S,  Deepika N,   "Two factor protection for accessing data using efficient revocation in cloud storage system"
, International Journal of Engineering Development and Research (IJEDR), ISSN:2321-9939, Volume.7, Issue 2, pp.199-200, May 2019, Available at :http://www.ijedr.org/papers/IJEDR1902040.pdf