Question: Robert and Stephanie are using public key cryptography to exchange signed messages. Robert plans to send a signed message to Stephanie, and she will then

Robert and Stephanie are using public key cryptography to exchange signed messages. Robert plans to send a signed message to Stephanie, and she will then verify that the message indeed came from Robert. Which keys will be involved in this process?

Group of answer choices

Robert's private key and Stephanie's private key

Robert's private key and Stephanie's public key

Robert's private key and Robert's public key

Stephanie's private key and Stephanie's public key

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