Secure File Storage using Hybrid Cryptography

Abstract

Security is a major concern in a wide range of applications, from cloud storage to messaging via chat. Many different approaches have also been proposed to provide data protection in the cloud, such as AES, DES, and RSA, but Existing systems often fail when only a certain form of encoding is utilised, either AES, OR DES, OR RSA depending on a consumer requirement. However, the major issue with this scheme is that each encryption is done with encryption keys, and if these keys are leaked in some manner, the entire data is destroyed, so we need a solution that can have additional security. As a result, hybrid cryptography is used in this project, in which current encryption techniques are combined with three new methods. When a user uploads data, it is divided into three sections, the first of which is encrypted with AES, the second with DES, and the third with RSA. LSB steganography is used to store the keys in the image, and the three encrypted files are stored in the cloud. Users must first recover the keys from the image before they can import all data from the server. These keys are then used to decrypt the data once more with AES, DES, and RSA. This approach increases the security of records.