can we mask CPQ data table column to keep data confidential from other user who has access to table

We have requirement for Federal customer we wanted to mask the data from CPQ transaction, to do that we have suggested to maintain the federal account details with mask info in data table and using mass update we will update or mask the transaction data. But we wanted to understand how can we keep data table value confidential, can we ask data table columns so that other users who has data table access cannot recognise the Federal accounts.