diff --git a/include/Nazara/Utility/AbstractBuffer.hpp b/include/Nazara/Utility/AbstractBuffer.hpp
new file mode 100644
index 000000000..3c33f5061
--- /dev/null
+++ b/include/Nazara/Utility/AbstractBuffer.hpp
@@ -0,0 +1,31 @@
+// Copyright (C) 2013 Jérôme Leclercq
+// This file is part of the "Nazara Engine - Utility module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#pragma once
+
+#ifndef NAZARA_ABSTRACTBUFFER_HPP
+#define NAZARA_ABSTRACTBUFFER_HPP
+
+#include <Nazara/Utility/Buffer.hpp>
+
+class NAZARA_API NzAbstractBuffer
+{
+	public:
+		NzAbstractBuffer() = default;
+		virtual ~NzAbstractBuffer();
+
+		virtual bool Create(unsigned int size, nzBufferUsage usage = nzBufferUsage_Static) = 0;
+		virtual void Destroy() = 0;
+
+		virtual bool Fill(const void* data, unsigned int offset, unsigned int size, bool forceDiscard = false) = 0;
+
+		virtual void* GetPointer() = 0;
+
+		virtual bool IsHardware() const = 0;
+
+		virtual void* Map(nzBufferAccess access, unsigned int offset = 0, unsigned int size = 0) = 0;
+		virtual bool Unmap() = 0;
+};
+
+#endif // NAZARA_ABSTRACTBUFFER_HPP
diff --git a/src/Nazara/Core/AbstractHash.cpp b/src/Nazara/Core/AbstractHash.cpp
new file mode 100644
index 000000000..2d51e257b
--- /dev/null
+++ b/src/Nazara/Core/AbstractHash.cpp
@@ -0,0 +1,8 @@
+// Copyright (C) 2013 Jérôme Leclercq
+// This file is part of the "Nazara Engine - Core module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#include <Nazara/Core/AbstractHash.hpp>
+#include <Nazara/Core/Debug.hpp>
+
+NzAbstractHash::~NzAbstractHash() = default;