Non-Trivial Witness Encryption and Null-iO from Standard Assumptions

SCN, pp. 425-441, 2018.

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Abstract:

A witness encryption (WE) scheme can take any ({{textsf {NP}}}) statement as a public-key and use it to encrypt a message. If the statement is true then it is possible to decrypt the message given a corresponding witness, but if the statement is false then the message is computationally hidden. Ideally, the encryption procedure should run...More

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