Computer Science for IGCSE & O level - Data Transmission (Section 13 - No. 27)
Which of the following is the correct name for a form of encryption in which both the sender and the recipient use the same key to encrypt and decrypt?
Symmetric key encryption
Asymmetric key encryption
Public key encryption
Block cipher encryption
Explanation
Symmetric key encryption uses the same secret key for both encryption and decryption.
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