func CalcHash(data []byte, hasher hash.Hash) []byte {
	hasher.Write(data)
	return hasher.Sum(nil)
}
func CalcHash(data []byte, hasher hash.Hash) []byte {
	hasher.Write(data)
	return hasher.Sum(nil)
}
func CalcHash ( data [ ] byte , hasher hash . Hash ) [ ] byte { hasher . Write ( data ) return hasher . Sum ( nil ) }
//--------------------------------------------------------------
// CalcHash returns the hash of data using hasher.
-------------------------------------------------------------- CalcHash returns the hash of data using hasher .