Switch to Ed25519 for cryptographic binding of joinsplits to transactions.

src/script/interpreter.cpp

@@ -14,8 +14,6 @@
 #include "script/script.h"
 #include "uint256.h"
 
-#include "sodium.h"
-
 using namespace std;
 
 typedef vector<unsigned char> valtype;
@@ -1085,7 +1083,8 @@ public:
             ::Serialize(s, txTo.vpour, nType, nVersion);
             if (txTo.vpour.size() > 0) {
                 ::Serialize(s, txTo.joinSplitPubKey, nType, nVersion);
-                std::vector<unsigned char> nullSig = {};
+
+                boost::array<unsigned char, 64> nullSig = {};
                 ::Serialize(s, nullSig, nType, nVersion);
             }
         }