Final answer:
Symmetric and asymmetric key cryptography are two different methods used in encryption and decryption. In symmetric key cryptography, the same key is used for both the encryption and decryption processes. Asymmetric key cryptography, also known as public key cryptography, uses two separate keys - a public key and a private key. This allows for secure communication without the need for both parties to share the same key.
Step-by-step explanation:
Symmetric and asymmetric key cryptography are two different methods used in encryption and decryption. In symmetric key cryptography, the same key is used for both the encryption and decryption processes. This means that the sender and the receiver of the encrypted data must share the same key.
Asymmetric key cryptography, also known as public key cryptography, uses two separate keys - a public key and a private key. The public key is used for encryption, while the private key is used for decryption. This allows for secure communication without the need for both parties to share the same key.
In practice, symmetric key cryptography is often used for encrypting large amounts of data efficiently, while asymmetric key cryptography is used for secure key exchange and digital signatures.