The sender is the only one who needs to know an initialization vector.

Name: The sender is the only one who needs to know an initialization vector.
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Question

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The initialization vector (IV) is used in symmetric encryption to introduce randomness into the encryption process and ensure that the same plaintext does not result in the same ciphertext. Both the sender and receiver need to know the IV for successful decryption.

The Sender Is the Only One Who Needs to Know