Wax C++ core extended by ability to convert raw private key into WIF format

core/foundation.cpp

@@ -269,6 +269,16 @@ private_key_data foundation::cpp_generate_private_key(const std::string& account
   );
 }
 
+std::string foundation::cpp_convert_raw_private_key_to_wif(const std::string& hexData)
+{
+  FC_ASSERT(hexData.size() == 64 && "Expected hex string pointing 32 byte buffer");
+
+  fc::sha256 sharedSecret(hexData);
+
+  return fc::ecc::private_key::regenerate(sharedSecret).key_to_wif();
+}
+
+
 brain_key_data foundation::cpp_suggest_brain_key()
 {
   return cpp::safe_exception_wrapper(

core/foundation.hpp

@@ -15,8 +15,11 @@ public:
 
   result cpp_calculate_public_key(const std::string& wif);
   result cpp_generate_private_key();
-
   private_key_data cpp_generate_private_key(const std::string& account, const std::string& role, const std::string& password);
+  /** Allows to convert 32 bytes data buffer expressed as hex string (pointing private key secret) into private key encoded as WIF format.
+  */
+  std::string cpp_convert_raw_private_key_to_wif(const std::string& hexData);
+
   brain_key_data cpp_suggest_brain_key();
 
   /** Returns map of hive::protocol constants in form: