Intro to Cryptography? | Why we need Cryptography? | Securing Data

Cryptography provides techniques to encrypt information and send it over the internet to the supposed party and only that party can decrypt your information known as Confidentiality. Secondly, Cryptography provides digital signature. Why we should learn cryptography? 1) If we talk about the internet, almost majority of the world’s top million websites use Cryptography to keep their users data private. One must know how our data is being handled at the backend. 2) It is important to know how encryption works and how to decrypt, and more importantly which encryption mechanism to use in certain conditions. 3) How digital signatures work and how one can make sure that an online document is sent by this person. 4) By learning cryptography you can develop your own unique algorithms to secure any kind of data you want.