A Combinational Approach for securing the data in cloud storage using HMAC-SHA512 and Information Secured Algorithm (ISA)

摘要

Cloud computing is adopting a mix of technology, infrastructure and environment to develop applications. Trust and security are the top concerns of cloud computing users. Without a doubt, they are critical in the emerging field of cloud computing. Due to many new issues surfaced from cloud computing's promise of elasticity and availability, traditional security and trust techniques may not fully resolve cloud computing's security problems. There is a need to consolidate and find solutions to the security issues in the cloud. For maintaining the data securely we have proposed a new scheme in which the data is stored in the form of files in encrypted format. Initially every 16-bit sequence is changed according to a random permutation matrix using a random sequence generator. And then HMAC-SHA512 is used to generate a hashed message authentication code to secure the data-in-transit. Later on encoding of the data is implemented using Information Secured Algorithm (ISA) in which the information is treated as sequences of elements. The message is divided into blocks and each block is labeled. For encoding, we consider 1-sequences which are the cipher blocks. The blocks are such that the message can be recovered from any in of the n blocks. The encoding is done using an n by m matrix. Decoding also involves few mathematical operations reconstructing the matrix from column vectors. The data stored as encoded data with ISA and HMAC-SHA512 generated code.