Question: 1. Alice has a paper saved on a third-party computer (such as in the cloud). (answer all these in 2 sentences or less) How can

1. Alice has a paper saved on a third-party computer (such as in the cloud). (answer all these in 2 sentences or less)

How can she prevent anyone except herself from reading the content of the paper beside herself?

How can she allow other people to view the paper but she can detect whether the paper has been modified?

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