Cryptography and its history

Started reading the book “Digital Fortress” by DanBrown and finished reading the first 100 pages. The first impression about the book is very interesting and realized that I am going to learn some interesting things with this book. I heard about cryptography before but was never keen about learning its roots and to find what’s new happening in that field. This book has really driven me to learn more about this interesting topic. Here is what I came to know about cryptography from various sources which include the book as well.

We all have right to keep our secrets and we do take utmost care to keep our secrets intact. In contradiction to this, we are very curious to know others secrets. And this warns us to be more careful with our confidential information. We follow lot of methods not to disclose the information to some one else. We remember the pass codes and destroy the physical copy, we keep the confidential documents in safe and again the pass code to this is also not in the form of any physical media. It works as long as the information we are trying to hide need not be passed to the second party. What if there is a scenario, where we need to convey this pass code to some one else with out letting some other one else know?? Answer is, confuse the some other one else and pass the information to the only some one else. This is the basic idea behind “Cryptography”

Ok Now I want to “Zhofrph brx wr pb eorj”. Dint understand? Just do backward shift 3 of the letters to know what it is…. Don’t want to do that? Ok I just wanted to “Welcome you to my Blog”. If you have done it then congrats you have just deciphered the “Caesar cipher” used by Julius Caesar to communicate with his generals during his military operations.