Question: Please Provide Step by Step solution thank you. Explain how to protect data integrity when Alice wants to send a message to Bob by using

Please Provide Step by Step solution thank you.

Explain how to protect data integrity when Alice wants to send a message to Bob by using secret key cryptography. (e.g., what should Alice send to Bob and how does Bob verify whether the message has been modified or not during transmission). What if they want to use public key cryptography?

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