FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -A public key is a cryptographic key that can be used by any person to encrypt a message so that it can only be decrypted by the intended recipient with their private key. A private key–also known as a secret key–is shared only with key’s initiator.

Detailed explanation-2: -Public key cryptography is a method of encrypting or signing data with two different keys and making one of the keys, the public key, available for anyone to use. The other key is known as the private key. Data encrypted with the public key can only be decrypted with the private key.

Detailed explanation-3: -Public key encryption Each participant in a public key system has a pair of keys. One key is nominated as the private key and is kept secret. The other key is distributed to anyone who wants it; this key is the public key. Anyone can encrypt a message by using your public key, but only you can read it.

Detailed explanation-4: -The private key is used to decrypt, as well as to encrypt, so using it for symmetric encryption requires a key exchange to share that key securely with trusted parties authorized to exchange secured data. Cryptographic software is usually used to automate this process.

Detailed explanation-5: -Symmetric encryption uses a single key that needs to be shared among the people who need to receive the message while asymmetric encryption uses a pair of public key and a private key to encrypt and decrypt messages when communicating.