+using std::vector;
+
+// helper class that contains hash function name
+// and hash
+class HashString
+{
+ protected:
+ string Type;
+ string Hash;
+ static const char * _SupportedHashes[10];
+
+ public:
+ HashString(string Type, string Hash);
+ HashString(string StringedHashString); // init from str as "type:hash"
+ HashString();
+
+ // get hash type used
+ string HashType() { return Type; };
+
+ // verify the given filename against the currently loaded hash
+ bool VerifyFile(string filename) const;
+
+ // helper
+ string toStr() const; // convert to str as "type:hash"
+ bool empty() const;
+
+ // return the list of hashes we support
+ static const char** SupportedHashes();
+};