Secure File Storage on Cloud using Hybrid Cryptography

Abstract

In recent years, Cloud Computing has played a vital role in the field of computing. It has revolutionized how computing is used in the industry from first setting up the infrastructure and then using it to just spinning up the resources as needed from different cloud vendors. It is also used in different industries for various services and storage of data. The data stored on the cloud can be retrieved as per the user's request but the concern of many users is the security of their data. This Security issue that most of the users are concerned about can be resolved by the techniques such as steganography and cryptography. Cryptographic techniques such as DES and AES are used in order to provide Security to the data but using a single technique sometimes doesn't provide high-level security. So here we have focused on introducing a hybrid cryptographic mechanism that involves multiple techniques to encrypt and decrypt the data. In this proposed system 3DES (Triple Data Encryption Standard) and Blowfish algorithms are used to provide security. Here the encryption is divided into three parts. Each part is encrypted with different encryption algorithms and decrypted using the different keys when required. This system of encryption and decryption guarantees better security of data to the users by storing encrypted data on a single cloud server, using 3DES and Blowfish.