Question

To ask the Secretary of State for Digital, Culture, Media and Sport, whether she has made an estimate of the cost of migrating government systems to post-quantum cryptography.

There is not yet a central estimate of the total cost of migrating government systems to post-quantum cryptography. Costs will vary according to departments’ technology estates and supplier. In line with the National Cyber Security Centre’s guidance, departments will conduct a discovery to identify their cryptographic assets by 2028. Departments will be expected to incorporate costs of migration using the established spending processes.