The option that best explains how symmetric encryption are typically used is; A: Symmetric encryption uses a single key that should be kept secret. The same key is used for both encryption and decryption of data.
Understanding Symmetric Encryption
Symmetric encryption is one of the oldest and best-known technique which makes use of secret key that could be a number, a word, or just a string of random letters, applied to the text of a message in order to change the content in a particular way.
Symmetric encryption involves the use of a key, which is known as the Symmetric Key which contains a series of numbers and letters.
Finally, Symmetric Key is used to encrypt a message as well as the same key is also used to decrypt it.
Looking at the given options from online, the correct option is A: Symmetric encryption uses a single key that should be kept secret. The same key is used for both encryption and decryption of data.
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