Q). When a person wishes to transmit an encrypted message whose key is used?

A. The sender's public key is used to encrypt the message.
B. The recipient's public key is used to encrypt the message.
C. The sender's private key is used to encrypt the message.
D. The recipient's private key is used to encrypt the message.

Answer: The correct answer is "B". Access to private key is available only to its owner. Thus, if one wishes to send an encrypted message, he should encrypt it with the receipient's public key so that only the
receipient can decrypt it with his private key.

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