@@ -23,10 +23,14 @@
 @interface OFHash: OFObject
 {
 	BOOL	 calculated;
 }
 
+#ifdef OF_HAVE_PROPERTIES
+@property (readonly) BOOL calculated;
+#endif
+
 /**
  * Adds a buffer to the hash to be calculated.
  *
  * \param buf The buffer which should be included into the calculation.
  * \param size The size of the buffer
@@ -37,10 +41,15 @@
 /**
  * \return A buffer containing the hash. The size of the buffer is depending
  *	   on the hash used. The buffer is part of object's memory pool.
  */
 - (uint8_t*)digest;
+
+/**
+ * \return A boolean whether the hash has already been calculated
+ */
+- (BOOL)calculated;
 @end
 
 /**
  * \brief A class which provides functions to create an MD5 hash.
  */