A New Substitution Block Cipher Algorithm With It’s Efficiency Valuation

Abstract

The technological advancement, the internet and information sharing has both positive and negative impacts. One of the negative impacts was the large increase in new information threats. Many of the computer incidents exploited confidential information being stored by companies in a variety of different industries, these incidents have raised a number of concerns about how the information is being secured and maintained in a proper manner.

  One of the main techniques to fulfil security goals is cryptography which means “secret writingâ€. It is the science of using mathematics to encrypt and decrypt the data. Security mechanism generally involves much more than algorithm and protocols for encryption and decryption purpose and also for generation of sub keys. In the present work an effort has been made to generate an algorithm which provides security to data transmitted.