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1. How can public-key encryption be used to distribute a secret key? What is the benefit...

1. How can public-key encryption be used to distribute a secret key? What is the benefit of doing this?

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Answer #1

In Public Key Encryption two keys are used for message encryption and decryption.

Keys used in is Public Key Encryption are Public and Private key.

Public Key-: It is the key that is known by everyone in the network. It is common to all. This key is share by your computer to other computers or system in the network who wants to communicate with them.

Private Key-: This key also known by your computer. This key is private for every user. Every Sender or receiver or computers sharing message to a network is having one private key that is known by only them.

How Public Key Encryption Works -: When Sender wants to send the message, sender use receiver public key to encrypt the message and send the message over the network. All User in the network can receive the message but cannot read it. Because the message can be decrypt by only receiver private key. hence for others computer those are in network for that message don’t have any meaning as they don’t have key to decrypt the message.

What is the benefit of doing this?

  1. Public Key Encryption is more secure than passwords. Hacker must obtain Private key of the user to destroy the message or use that message for wrong things.
  2. Provide Strong authentication because message can be decrypt only by the receiver private key that is known by receiver only.
  3. In this non- interactive login is also possible.
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