removed 'protected' context, should be private

Author: Shai Halevi

src/FHE.cpp

@@ -925,7 +925,7 @@ void readSecKeyBinary(istream& str, FHESecKey& sk)
 // N.B. This does not read the public key part as the ASCII version does!!!
 #error This is a bug, needs to read also the public key part
 
-  DoubleCRT blankDCRT(sk.context, IndexSet::emptySet());
+    DoubleCRT blankDCRT(sk.getContext(), IndexSet::emptySet());
   read_raw_vector<DoubleCRT>(str, sk.sKeys, blankDCRT);
 
   readEyeCatcher(str, BINIO_EYE_SK_END);

src/FHE.h

@@ -137,9 +137,6 @@ ostream& operator<<(ostream& str, const KeySwitch& matrix);
  * @brief The public key
  ********************************************************************/
 class FHEPubKey { // The public key
-
-protected:
-
   const FHEcontext& context; // The context
 
 private: