fix the fingerprint generation (#1432)

centrifuge · Aug 20, 2020 · b0073bd · b0073bd
1 parent 59b182b
commit b0073bd
Showing 1 changed file with 7 additions and 1 deletion.
diff --git a/documents/coredocument.go b/documents/coredocument.go
@@ -512,7 +512,13 @@ func generateTransitionRulesFingerprintHash(fingerprint coredocumentpb.Transitio
 		return nil, err
 	}
 
-	return sha3.NewLegacyKeccak256().Sum(fm), nil
+	s := sha3.NewLegacyKeccak256()
+	_, err = s.Write(fm)
+	if err != nil {
+		return nil, err
+	}
+
+	return s.Sum(nil), nil
 }
 
 // TODO remove as soon as we have a public method that retrieves the parent prefix