Symmetric Key encryption

• One key is used for both encryption and decryption.

• For a sender and receiver to communicate securely using Symmetric Key encryption, they must agree upon a key and keep it secret between themselves.

Asymmetric Key encryption

• It uses a pair of keys for encryption and decryption.

• A public key, which encrypts data, and a corresponding private key (secret key) for decryption.

• You publish your public key to the world while keeping your private key secret.

• Private key has mathematical relationship with public key and it is computationally infeasible to deduce the private key from the public key.

• Anyone who has a public key can encrypt information but cannot decrypt it.

• Only the person who has the corresponding private key can decrypt the information. No other key can be used for decryption.