Implement CSecureDataStream for streaming CKeyingMaterial

src/wallet/crypter.h

@@ -7,6 +7,7 @@
 
 #include "keystore.h"
 #include "serialize.h"
+#include "streams.h"
 #include "support/allocators/secure.h"
 #include "zcash/Address.hpp"
 
@@ -67,6 +68,18 @@ public:
 
 typedef std::vector<unsigned char, secure_allocator<unsigned char> > CKeyingMaterial;
 
+class CSecureDataStream : public CBaseDataStream<CKeyingMaterial>
+{
+public:
+    explicit CSecureDataStream(int nTypeIn, int nVersionIn) : CBaseDataStream(nTypeIn, nVersionIn) { }
+
+    CSecureDataStream(const_iterator pbegin, const_iterator pend, int nTypeIn, int nVersionIn) :
+            CBaseDataStream(pbegin, pend, nTypeIn, nVersionIn) { }
+
+    CSecureDataStream(const vector_type& vchIn, int nTypeIn, int nVersionIn) :
+            CBaseDataStream(vchIn, nTypeIn, nVersionIn) { }
+};
+
 /** Encryption/decryption context with key information */
 class CCrypter
 {