Double Encrypted Key Based AES Combined Coding For Improved Cloud Security

Abstract

With the advent of the technology, documents that are being accessed on the fly are increasing, and surprisingly data that is given as input for specific applications designed for specific purpose via online are increasing exponentially. Hence, providing security to such data has become an imperative task. Cloud computing in this juncture provides access to these applications that can be remotely accessed such that necessary tasks can be completed from a remote place. Hence, it is the need of the hour to develop techniques that reduce the storage complexity and complete the task in less time. In this paper, it is proposed to use Huffman and LZMA for compression of the input media and then encrypt the data, resulting in compressed data and securing the same by AES based encryption. The keys used for encryption are further encrypted using RSA provides additional security to stored data on cloud. The proposed system automatically selects the type of compression mechanism to be applied to the media. Results show that the data is intact and the compression achieved by LZMA is about 1.98% more than that of the Huffman.