The post-quantum world is often described as a doomsday scenario. One of the biggest fears about quantum computing is its ability to break the traditional encryption algorithms that have protected our data for decades.
None of the candidate encryption algorithms to counter the threat of quantum computing are intended for the massive amounts of sensitive data stored “at rest”. Instead they are intended to replace those currently used for: (1) data in transit over the public internet; and (2) digital signatures used for authentication.