diff --git a/util/io/Hash.scala b/util/io/Hash.scala
index e627e16fa..fe6a47a75 100644
--- a/util/io/Hash.scala
+++ b/util/io/Hash.scala
@@ -33,6 +33,7 @@ object Hash
 		array
 	}
 	def halve(s: String): String = if(s.length > 3) s.substring(0, s.length / 2) else s
+	def halfHashString(s: String): String = halve(toHex(apply(s)))
 
 	/** Calculates the SHA-1 hash of the given String.*/
 	def apply(s: String): Array[Byte] = apply(s.getBytes("UTF-8"))