DISK ENCRYPTION USING PARALLELIZATION OF BLOCK CIPHER

Abstract

These days digital contents like contacts, emails, messages, images, videos, memo etc. are so important that we don‘t want to compromise those data if we lost our phone or some unauthorized access to our phone. In this paper, we will learn about Disk Encryption, why it is important, proposal of a customized block cipher and how it would be efficient Comparatively available block cipher. Disk encryption is a process where all user data on a device using an encrypted key. In a encrypted device, All data in write operation, encrypted before committing it to disk and all reads automatically decrypted before returning it to the calling process, also known as on-the-fly encryption. It means it always encrypt data in disk, just decrypt block when required and encrypt for newly requested block. ‗Data at Rest‘ refers to data stored in persistent storage like Hard disk, eMMC, NandFlash where ‗Data in Use‘ generally refers to data being processed by a CPU or in memory like DRAM. Disk Encryption is a process of DAR, where we protect data stored on disk.