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Fix bug in BMR with long secret values.

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This commit is contained in:
Marcel Keller
2024-03-14 11:45:48 +11:00
parent 93fd273fc2
commit a4f08e6ca9
2 changed files with 9 additions and 4 deletions
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5
BMR/AndJob.cpp
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@@ -20,13 +20,14 @@ int AndJob::run()
int i_gate = 0;
for (size_t i = start; i < end; i += 4)
{
GC::Secret<EvalRegister>& dest = S[args[i + 1]];
for (int j = 0; j < args[i]; j++)
{
i_gate++;
gate->init_inputs(gate_id + i_gate,
ProgramParty::s().get_n_parties());
dest.get_reg(j).eval(S[args[i + 2]].get_reg(j),
int dl = GC::Clear::N_BITS;
GC::Secret<EvalRegister>& dest = S[args[i + 1] + j / dl];
dest.get_reg(j % dl).eval(S[args[i + 2] + j / dl].get_reg(j % dl),
S[args[i + 3]].get_reg(0), *gate,
ProgramParty::s().get_id(), (char*) prf_output, 0, 0, 0);
gate++;

8
BMR/Register.cpp
View File

@@ -172,8 +172,12 @@ void EvalRegister::andrs(GC::Processor<GC::Secret<EvalRegister> >& processor,
for (size_t j = 0; j < args.size(); j += 4)
{
AndJob& and_job = party.and_jobs[i_thread];
GC::Secret<EvalRegister>& dest = processor.S[args[j + 1]];
dest.resize_regs(args[j]);
int dl = GC::Clear::N_BITS;
for (int i = 0; i < args[j]; i += dl)
{
GC::Secret<EvalRegister>& dest = processor.S[args[j + 1] + i / dl];
dest.resize_regs(min(args[j] - i, dl));
}
processor.complexity += args[j];
for (int i = 0; i < args[j]; i++)
{