)

	var objectSize int64
	for _, partInfo := range objInfo.Parts {
		if isSSEC {
			hr, err = hash.NewReader(ctx, io.LimitReader(r, partInfo.Size), partInfo.Size, "", "", partInfo.ActualSize)
		} else {
			hr, err = hash.NewReader(ctx, io.LimitReader(r, partInfo.ActualSize), partInfo.ActualSize, "", "", partInfo.ActualSize)
		}
		if err != nil {
			return err
		}