What is a Substitution Cipher and is it Secure?
What will you learn? What is a Substitution Cipher Imagine you receive this message: IQL WPV WCVJQEV What does it mean? You were told it is a Substitution Cipher, but how will that help you? First of all, we need to understand what a Substitution Cipher is. Basically, it is just rearranging the characters. That … Read more
