Final answer:
Symmetric key encryption or secret key encryption is the term used to describe the same pre-shared key or secret key known by both the sender and receiver to encrypt and decrypt data.
Step-by-step explanation:
The term used to describe the same pre-shared key or secret key, known by both the sender and receiver to encrypt and decrypt data, is symmetric key encryption. It is also known as secret key encryption. In symmetric key encryption, the same key is used for both encryption and decryption. This key is known only to the sender and receiver, ensuring secure communication.
The term used to describe the same pre-shared key or secret key, known by both the sender and receiver to encrypt and decrypt data, is a Symmetric Key. In symmetric key encryption, the same key is used for both encryption of plaintext and decryption of ciphertext. This method relies on both parties having access to the secret key, which must be kept confidential to maintain the security of the communication. Examples of symmetric key algorithms include Advanced Encryption Standard (AES) and Data Encryption Standard (DES).