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Check wrong values for belowLVL in packedRecrypt #338

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Check wrong values for belowLVL in packedRecrypt #338

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7 changes: 7 additions & 0 deletions src/recryption.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -713,6 +713,7 @@ void packedRecrypt(const CtPtrs& cPtrs,
const std::vector<zzX>& unpackConsts,
const EncryptedArray& ea)
{
if(cPtrs.size() == 0) return; // if there is no entry the next line will throw a exception.
FHEPubKey& pKey = (FHEPubKey&)cPtrs[0]->getPubKey();

// Allocate temporary ciphertexts for the recryption
Expand All @@ -733,6 +734,9 @@ void packedRecrypt(const CtPtrs& array,
const std::vector<zzX>& unpackConsts,
const EncryptedArray& ea, long belowLvl)
{
if(belowLvl == LONG_MAX) //default Value
belowLvl /= ea.getContext().BPL();
assertTrue(belowLvl <= (LONG_MAX / ea.getContext().BPL()),"Level to high overflow of Type LONG");
std::vector<Ctxt*> v;
for (long i=0; i<array.size(); i++)
if ( array.isSet(i) && !array[i]->isEmpty()
Expand All @@ -744,6 +748,9 @@ void packedRecrypt(const CtPtrMat& m,
const std::vector<zzX>& unpackConsts,
const EncryptedArray& ea, long belowLvl)
{
if(belowLvl == LONG_MAX) //default Value
belowLvl /= ea.getContext().BPL();
assertTrue(belowLvl <= (LONG_MAX / ea.getContext().BPL()),"Level to high overflow of Type LONG");
std::vector<Ctxt*> v;
for (long i=0; i<m.size(); i++)
for (long j=0; j<m[i].size(); j++)
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