Describe the steps used in creating digital signature.

Creating a Digital Signature:

1. Hashing the Message:
   • Imagine the message is like a secret recipe.
   • We use a special blender called a hash function to turn the recipe into a unique fingerprint (message digest).
2. Encrypting with Private Key:
   • Now, the sender wears a special glove called a private key.
   • They use this glove to lock the fingerprint (message digest) in a box, creating the digital signature.
3. Sending the Signature with the Message:
   • The sender sends the locked box (digital signature) along with the recipe (original message).

Verifying the Digital Signature:

1. Unlocking with Public Key:
   • The receiver has a matching glove called a public key.
   • They use this glove to unlock the box (decrypt the digital signature) and reveal the fingerprint.
2. Checking Message Integrity:
   • The revealed fingerprint (message digest) is like a secret code.
   • The receiver looks at the original recipe (message), applies the secret code (hash function), and gets their own fingerprint.
3. Comparing Fingerprints:
   • If the fingerprints match, it’s like having the same secret code on both ends.
   • This ensures that the recipe (message) wasn’t tampered with during delivery.