Data Security in a Network by Using Advanced Encryption Standard

Abstract

Security of data is considered as most important task in any network where data is to be passed between two terminals or ports. Advanced Encryption Standard cryptography technique is used for security of data that convert the plain text to the encrypted text by using symmetric key cryptographic method where same associated key is used for both encryption and decryption. In this article 128-bit block as well as 128-bit key size is used and in Add Round Key step, two XOR operations on state and sub key with some scope are performed to encode the data more so that it will become more secure and takes more time to decode by any wrong method or by means of hacking. AES can be used for both hardware and software so this method can be used for both but performance is done for the software part only. This implementation works more efficiently for the military purposes, private investigations and for securing online data from attacks because it is related with data security related terms such as data confidentiality, integrity etc. One may need to work more if there is a need of getting data through unauthorized way. There are three other byte-oriented approaches used before this implementation such as Sub Bytes, Shift Rows and Mix Columns.