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Novice here. Is there a MPC function where no information is leaked even if all parties are not trustworthy ?

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  • $\begingroup$ If you are a novice, may I suggest you read some books on the subject, which will answer this question and many more? $\endgroup$
    – fkraiem
    Commented Dec 31, 2015 at 15:38
  • $\begingroup$ The basic answer is yes, by the way, in suitable models and under suitable assumptions. $\endgroup$
    – fkraiem
    Commented Dec 31, 2015 at 15:40

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Yes there are. The search term you are looking for is either "dishonest majority" (which doesn't necessarily mean n-1, but often that is the case) or "full-threshold". The SPDZ protocol is one that works in the malicious model that would meet your description.

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