1. Which of the following description regarding the 1–2 oblivious transfer are correct?
Alice, the sender, has two messages m0 and m1; she knows exactly which one will be received by Bob the receiver.
The sender and receiver do not need to exchange secret messages during the information transfer.
The sender and receiver need to exchange secret messages during the information transfer.
2. Suppose assume cloud provider is (potentially) malicious. We can take the following ways to protect users' privacy and enhance the system's security.
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