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Obliv C
MPC-SoK edited this page Jul 27, 2018
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Obliv-C is an extension of C that implements and executes a garbled circuit protocol.
It produces a single independent executable that can be used anywhere, which is convenient.
Some annoyances:
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There's some boiler-plate code needed to call the oblivious part.
- remote host should be set to NULL if you are not the remote host
- The examples implicitly cast remote host to a boolean to determine which party is acting.
- The function ocTestTcpOrDie is not included in obliv-c proper, but is included in
util.h, which causes namespace problems - There is a method
cleanupProtocol. It is not clear why this is needed. Would you ever re-use a ProtocolDesc object?
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It's possible during the online phase to check which party you are and to do conditional execution based on this fact.
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It is not clear whether locations in the IO object should be “reused”, or whether some should be allocated for Alice and some to Bob.