A Comparative Study of Symmetric Key Algorithm DES, AES and Blowfish for Video Encryption and Decryption

Abstract

Cryptography is “The science of protecting data” & Network security “Keeping information private and
secure from unauthorized users”. In cryptography encryption decryption of data is done by using secret key provide data
confidentiality, data integrity and authentication[3]. The process of transforming plaintext into ciphertext is called
encipherment or encryption; the reverse process of transforming ciphertext into plaintext is called decipherment or
decryption. Both encipherment and decipherment are controlled by a cryptographic key.This paper performs
comparative analysis of three Algorithms like DES, AES and BLOWFISH for video encryption and decryption
considering certain parameters such as time and file size.