Abstract
Now a day's cloud computing is used in many areas such as industry, military, colleges etc to store huge amount of data. We can retrieve data from cloud on request of user. To store data on cloud we have to face many issues. To provide the solution to these issues there are n number of ways. Cryptography and steganography techniques are used now a day's for data security. Use of a single algorithm is not effective for high level security to data in cloud computing. In my project I have introduced new security mechanism using symmetric key cryptography algorithm and steganography. In this proposed system AES, DES, and RC6 algorithms are used to provide block wise security to data. All algorithm key, size is 128 bit. LSB steganography technique is introduced for key information security. Key information contains part of file is encrypted using by which algorithm and key. File is splited into three parts. Each and every part of file is encrypted using different algorithm. All parts of file are encrypted simultaneously with the help of multithreading technique. Data encryption Keys are inserted into cover image using LSB technique. Stego image is send to valid receiver using email. For file decryption purpose reverse process of encryption is applied
Highlights
Our paper introduces a new model for file security which provides an efficient solution for storing the file in the cloud environment
This model is known as Hybrid Cryptosystem model where we add double -layer security to store the file in the cloud environment
This paper presents cryptography and steganography techniques
Summary
Our paper introduces a new model for file security which provides an efficient solution for storing the file in the cloud environment. We use hybrid encryption where each file is split into three equal parts in which each part of the file is encrypted using 3 encryption algorithms which are AES, DES AND RC6 and we use image steganography method using LSB technique. AES algorithm has been embraced by the U.S government and presently utilized around the world It replaces the Data Encryption Standard (DES) algorithm which was announced in 1977. The Data Encryption Standard (DES) is a symmetric-key block cipher published by the National Institute of Standards and Technology (NIST).DES is an implementation of a Feistel Cipher. For information security and protection assurance issues, the basic test of a partition of sensitive information and access control is satisfied. [2]
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