Substitution Cipher | Transposition Cipher | Product Cipher With Examples

In this lecture three different types of operation on plain text has been explained. These operations or techniques include substitution technique which is also called substitution cipher. In substitution cipher the concept of mono alphabetic and poly alphabetic has also been discussed with help of examples .Transposition technique is just the shuffling of plain text with some rules. The transposition techniques in cryptography play an important role. The basic work of transposition technique has been explained in hindi/urdu. Transposition technique is also known as transposition cipher. Product cipher is most of the most popular technique and there is prominent role of product cipher in cryptography. The basic definition of product cipher has also been covered in this lecture. #AzComputing #Substitution #Transposition ........................................................................................................................... Disclaimer__Some contents are used for educational purpose under fair use. Copyright Disclaimer Under Section 107 of the Copyright Act 1976, allowance is made for "fair use" for purposes such as criticism, comment, news reporting, teaching, scholarship, and research. Fair use is a use permitted by copyright statute that might otherwise be infringing. Non-profit, educational or personal use tips the balance in favor of fair use.