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Semi-honest computation based on somewhat homomorphic encryption.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,33 @@ | ||
| /* | ||
| * soho-party.cpp | ||
| * | ||
| */ | ||
|
|
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| #include "Protocols/SohoShare.h" | ||
| #include "Math/gfp.h" | ||
| #include "Math/gf2n.h" | ||
| #include "FHE/P2Data.h" | ||
| #include "Tools/ezOptionParser.h" | ||
| #include "GC/SemiSecret.h" | ||
| #include "GC/SemiPrep.h" | ||
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|
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| #include "Player-Online.hpp" | ||
| #include "Protocols/HemiPrep.hpp" | ||
| #include "Processor/Data_Files.hpp" | ||
| #include "Processor/Instruction.hpp" | ||
| #include "Processor/Machine.hpp" | ||
| #include "Protocols/SohoPrep.hpp" | ||
| #include "Protocols/SemiInput.hpp" | ||
| #include "Protocols/MAC_Check_Base.hpp" | ||
| #include "Protocols/MAC_Check.hpp" | ||
| #include "Protocols/fake-stuff.hpp" | ||
| #include "Protocols/SemiMC.hpp" | ||
| #include "Protocols/Beaver.hpp" | ||
| #include "GC/ShareSecret.hpp" | ||
| #include "GC/SemiHonestRepPrep.h" | ||
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| int main(int argc, const char** argv) | ||
| { | ||
| ez::ezOptionParser opt; | ||
| spdz_main<SohoShare<gfp>, SohoShare<gf2n_short>>(argc, argv, opt); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,31 @@ | ||
| /* | ||
| * SohoPrep.h | ||
| * | ||
| */ | ||
|
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| #ifndef PROTOCOLS_SOHOPREP_H_ | ||
| #define PROTOCOLS_SOHOPREP_H_ | ||
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| template<class T> | ||
| class SohoPrep : public SemiHonestRingPrep<T> | ||
| { | ||
| typedef typename T::clear::FD FD; | ||
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| static PartSetup<FD>* setup; | ||
| static Lock lock; | ||
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| public: | ||
| static void basic_setup(Player& P); | ||
| static void teardown(); | ||
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| SohoPrep(SubProcessor<T>* proc, DataPositions& usage) : | ||
| BufferPrep<T>(usage), | ||
| RingPrep<T>(proc, usage), SemiHonestRingPrep<T>(proc, usage) | ||
| { | ||
| } | ||
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| void buffer_triples(); | ||
| void buffer_inverses(); | ||
| }; | ||
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| #endif /* PROTOCOLS_SOHOPREP_H_ */ |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,78 @@ | ||
| /* | ||
| * SohoPrep.cpp | ||
| * | ||
| */ | ||
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| #include "SohoPrep.h" | ||
| #include "FHEOffline/DataSetup.h" | ||
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| template<class T> | ||
| PartSetup<typename SohoPrep<T>::FD>* SohoPrep<T>::setup = 0; | ||
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| template<class T> | ||
| Lock SohoPrep<T>::lock; | ||
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| template<class T> | ||
| void SohoPrep<T>::basic_setup(Player& P) | ||
| { | ||
| assert(not setup); | ||
| setup = new PartSetup<FD>; | ||
| MachineBase machine; | ||
| setup->secure_init(P, machine, T::clear::length(), 0); | ||
| setup->covert_secrets_generation(P, machine, 1); | ||
| } | ||
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| template<class T> | ||
| void SohoPrep<T>::teardown() | ||
| { | ||
| if (setup) | ||
| delete setup; | ||
| } | ||
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| template<class T> | ||
| void SohoPrep<T>::buffer_triples() | ||
| { | ||
| auto& proc = this->proc; | ||
| assert(proc != 0); | ||
| lock.lock(); | ||
| if (not setup) | ||
| { | ||
| PlainPlayer P(proc->P.N, T::clear::type_char()); | ||
| basic_setup(P); | ||
| } | ||
| lock.unlock(); | ||
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| Plaintext_<FD> ai(setup->FieldD), bi(setup->FieldD); | ||
| SeededPRNG G; | ||
| ai.randomize(G); | ||
| bi.randomize(G); | ||
| Ciphertext Ca = setup->pk.encrypt(ai); | ||
| Ciphertext Cb = setup->pk.encrypt(bi); | ||
| octetStream os; | ||
| Ca.pack(os); | ||
| Cb.pack(os); | ||
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| for (int i = 1; i < proc->P.num_players(); i++) | ||
| { | ||
| proc->P.pass_around(os); | ||
| Ca.add<0>(os); | ||
| Cb.add<0>(os); | ||
| } | ||
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| Ciphertext Cc = Ca.mul(setup->pk, Cb); | ||
| Plaintext_<FD> ci(setup->FieldD); | ||
| SimpleDistDecrypt<FD> dd(proc->P, *setup); | ||
| EncCommitBase_<FD> EC; | ||
| dd.reshare(ci, Cc, EC); | ||
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| for (unsigned i = 0; i < ai.num_slots(); i++) | ||
| this->triples.push_back({{ai.element(i), bi.element(i), | ||
| ci.element(i)}}); | ||
| } | ||
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| template<class T> | ||
| void SohoPrep<T>::buffer_inverses() | ||
| { | ||
| assert(this->proc != 0); | ||
| ::buffer_inverses(this->inverses, *this, this->proc->MC, this->proc->P); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,40 @@ | ||
| /* | ||
| * SohoShare.h | ||
| * | ||
| */ | ||
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| #ifndef PROTOCOLS_SOHOSHARE_H_ | ||
| #define PROTOCOLS_SOHOSHARE_H_ | ||
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| #include "SemiShare.h" | ||
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| template<class T> class SohoPrep; | ||
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| template<class T> | ||
| class SohoShare : public SemiShare<T> | ||
| { | ||
| typedef SohoShare This; | ||
| typedef SemiShare<T> super; | ||
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| public: | ||
| typedef SemiMC<This> MAC_Check; | ||
| typedef DirectSemiMC<This> Direct_MC; | ||
| typedef SemiInput<This> Input; | ||
| typedef ::PrivateOutput<This> PrivateOutput; | ||
| typedef SPDZ<This> Protocol; | ||
| typedef SohoPrep<This> LivePrep; | ||
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| static const bool needs_ot = false; | ||
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| SohoShare() | ||
| { | ||
| } | ||
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| template<class U> | ||
| SohoShare(const U& other) : | ||
| super(other) | ||
| { | ||
| } | ||
| }; | ||
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| #endif /* PROTOCOLS_SOHOSHARE_H_ */ |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,8 @@ | ||
| #!/bin/bash | ||
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| HERE=$(cd `dirname $0`; pwd) | ||
| SPDZROOT=$HERE/.. | ||
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| . $HERE/run-common.sh | ||
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| run_player soho-party.x $* || exit 1 |
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