Skip to content

reduce the number of DoubleCRT constants in unpack function #231

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Draft
wants to merge 1 commit into
base: master
Choose a base branch
from
Draft

reduce the number of DoubleCRT constants in unpack function #231

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
26 changes: 22 additions & 4 deletions src/intraSlot.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -69,10 +69,27 @@ class unpack_pa_impl {
static void apply(const EncryptedArrayDerived<type>& ea, const CtPtrs& unpacked,
const Ctxt&ctxt,const std::vector<zzX>& unpackSlotEncoding)
{
long d = ea.getDegree(); // size of each slot

//ctxt.cleanUp();

const long d = ea.getDegree(); // size of each slot
const long t = ea.getPAlgebra().getP();
const long m = ea.getPAlgebra().getM();
DoubleCRT coeff(unpackSlotEncoding.front(), ctxt.getContext(), ctxt.getPrimeSet());
Ctxt tmp1(ZeroCtxtLike, ctxt);
for (long i = 0; i < unpacked.size(); i++) {
/// accumulative frobenius: frobenius(v, 2) = frobenius(frobenius(v, 1), 1)
if (i > 0)
coeff.automorph(t % m);
*(unpacked[i]) = ctxt;
unpacked[i]->multByConstant(coeff);
Ctxt origin(*unpacked[i]);
/// TODO use hoisting here
for (long j = 1; j < d; j++) {
tmp1 = origin;
tmp1.frobeniusAutomorph(j);
tmp1.cleanUp();
*(unpacked[i]) += tmp1;
}
}
#if 0
// Convert the unpack constants to doubleCRT
std::vector< std::shared_ptr<DoubleCRT> > coeff_vector(d);
for (long i = 0; i < d; i++) {
Expand Down Expand Up @@ -102,6 +119,7 @@ class unpack_pa_impl {
*(unpacked[i]) += tmp1;
}
} // NOTE: why aren't we using multi-threading here?
#endif
}
};
//! \endcond
Expand Down