Digital Signature: The Autograph of Cyberspace

Imagine you've signed a poster of your fav Bollywood star, Shah Rukh Khan, at a mall. Now, you want to sell that poster to someone, but you don't want to give them the original signing pen used by SRK. That pen is like the private key in a digital signing process. Just as your autograph on the poster is your unique signature, a digital signature is a unique digital footprint that verifies the authenticity of a message or document. But, just as someone can fake SRK's autograph, hackers can try to replicate a digital signature. That's why India's IT Act, 2000, defines digital signatures and their importance in online transactions. The Indian government has also issued a set of rules under the IT Act, 2008, called the Information Technology (Certifying Authorities and Digital Signature) Rules, 2013. Now, can someone explain why we need all these rules...