Open AccessSecure File Storage On Cloud Using Hybrid Cryptography
Author(s) -
Aishwarya Nawal,
Harish Soni,
Shweta Arewar,
Varshita Gangadhara
Publication year - 2021
Publication title -
international journal of advanced research in science, communication and technology
Language(s) - English
Resource type - Journals
ISSN - 2581-9429
DOI - 10.48175/ijarsct-1101
Subject(s) - computer science , cryptography , cloud computing , ciphertext , cloud storage , computer security , server , encryption , symmetric key algorithm , key (lock) , id based cryptography , data security , backup , file server , public key cryptography , computer network , database , key distribution , operating system
The servers that are accessed over the web and the software and databases that run on those servers are together known as "The Cloud". The amount of data needing storage is increasing every day and thus, there is a requirement for increased storage space. Cloud allows us to do the same. Storage of data on the cloud is done for various companies, colleges, for military purposes, etc. The data on the cloud is susceptible to various risks such as lack of backup services, data leakage, lack of control over your data being stored, etc. To provide a solution to these risks over cloud storage there are several ways, which include Cryptography and Steganography. Cryptography is quite popular for data security. The Cryptography technique translates original data into an unreadable form known as ciphertext. Text is converted into an unreadable form using keys. This ensures that only an authorized entity with the right key, can access the data from the cloud server. Ciphertext data is visible for everyone. There are two types of cryptography algorithms namely Symmetric Key cryptography and Asymmetric Key Cryptography. The use of a single cryptography algorithm provides basic security. In this paper, we have suggested the use of a combination of symmetric key cryptography algorithms namely: AES-GCM, Fernet, AES-CCM, CHACHA20_POLY1305 algorithm, which help to provide high-level security to the data. Here, the key is also secured using the Fernet algorithm. The file is split into N parts. Each part is encrypted simultaneously. For the file decryption purpose reverse process of encryption is applied.