Import code from previous AssetBuilder version

src/Crypto/IHashFunction.h

@@ -0,0 +1,12 @@
+#pragma once
+
+class IHashFunction
+{
+public:
+    virtual ~IHashFunction() = default;
+
+    virtual size_t GetHashSize() = 0;
+    virtual void Init() = 0;
+    virtual void Process(const void* input, size_t inputSize) = 0;
+    virtual void Finish(void* hashBuffer) = 0;
+};