A Note On The And Cryptography Essay

Ever since the earliest days of writing, people have had reasons to limit their information to a restricted group of people. Because of this, these people have had to develop ideas of making their information unable to be read by unwanted people. The general techniques used to hide the meaning of messages constitute the study known as cryptography. "Ciphers, in general fall into three major classifications: 1. Concealment Cipher, 2. Transposition Cipher, and 3. Substitution Cipher" (4). Cryptography protects information by altering its form, making it unreadable to unwanted people or groups of people.

Two set of text images and one true sample image is taken for cryptography. In this proposed work these three images are encrypted into various shares through MATLAB, so that after compiling specific number of share the original image is visible. After encryption the performance analysis is done with the help of PSNR and MSE values.

There are many aspects to security and applications, from secure commerce and payment to private communications and protecting passwords. Cryptography, is the practice and study in securing communication between parties in the presence of potential adversaries (Yousuf, N.D.). This report focuses on modern methods of cryptography its operation, strengths and weaknesses, its application techniques in computing and some other aspects where cryptography deemed essential as discussed in this report.

1 Assistant Professor, Department of Information Technology B. K. Birla Institute of Engineering & Technology, Pilani 333031, India

By Tribuvan Kumar Prakash Bachelor of Engineering in Electronics and Communication Engineering Visveswaraiah Technological University, Karnataka, 2004. August 2007

Conklin, W. A., White, G., Williams, D., Davis, R., & Cothren, C. (2012). Principles of computer security: CompTIA Security+™ and beyond (3rd ed.). New York, NY: McGraw Hill.

Kim, D., & Solomon, M. G. (2012). Fundamentals of Information Systems SecuritY. Sudbury: Jones & Bartlett Learning.

I am Professor Kirk Mooring and I will be your instructor for this class. In this class, you will learn the fundamental core theories of information and network security. In this course, you will learn and use technology skills that are in demand in today’s job market. With so many threats and vulnerabilities created daily that we have to learn to work as a team in order to protect our data with the appropriate security safeguards. You will study the concepts that will help you evaluate and mitigate risk by selecting the appropriate security controls and technologies.

            In the past decade, rapid advances have been made in the field of cryptography.  These advances have brought considerable

*Virendra Kumar Maurya1, Rituraj Jalan1, H. P. Agarwal1, S. H. Abdi2, Dharmendra Pal2, G. Tripathi2 and S. Jagan Raj3 1 Department of Electrical Engineering, Shekhawati Engineering College, Dundlod, Rajasthan, India 2 Department of Physics, BBD National Institute of Technology & Management, BBD University Campus, Lucknow, Uttar Pradesh, India 3 Department of Electrical Engineering, BBD National Institute of Technology & Management, BBD University Campus, Lucknow, Uttar

Mr. R. K. Somani HOD(CE & IT) ITM,Bhilwara(Raj.)311001 Under the guidance of: Mr.Vijay Prakash Sharma Lecturer(CE)

Hausman, K., Weiss, M., & Barrett, D. (2011). Comptia security sy0-301. (3rd ed.). Pearson Education, Inc.

The aim of this document is to provide an overview on the various cryptographic technologies in use today and what the future might hold. The document will cover the following subjects:

Before approaching Claude Shannon’s contribution to Cryptography, one must look at his prior work in particular in the field of information theory, a field he theorized in his 1948 paper A Mathematical Theory of Information. Shannon introduced a lot of the ideas that were mentioned and developed in this revolutionary paper to the scientific community in his 1945 paper entitled A Mathematical Theory of Cryptography.

Submitted in partial fulfillment of the requirements for the degree of Bachelor of Engineering in Computer Engineering