Let me try this on you again. A typical disc drive will have media rotating over an active head at 7,000 to 20,000 revolutions a minute. Error is constantly collected at gigabit rates. No, these devices are not like a person moving a mouse with his hand.
More important to your thinking, I think, is that a fair amount of the disc's storage capacity is devoted to what is termed "system areas" which are areas where no user data exists (seen by any file system, and protected by security measures). A typical 512 GB drive may have thirty or forty GB of such system storage that is completely secure and which only the internal drive controller can see or use through it's wall on the storage interface(s). So, it is further trivial to specially write some system area tracks specifically devoted to creating opportunities for clean reads of ambient noise (e.g., including amperage manipulation to make sure the data has very high noise content).
That same technique also works on flash. More commonly in flash there are 'bad cells' owing to imperfections which are random. Again, in the millions.
Flash writes are generally very slow so there is a lot of parallel processing in flash to make them appear to be fast. For computer memory these also provide very fast, large scale, random number opportunities. All these devices are fundamentally using magnetism for storage and electromagnetism for reading and writing.
Every drive manufacturer in the world (of any size, and there only a few) knows this because we brought them all together in TCG and they have all built the devices (this includes Chinese variants).
The ones that are FIPS or Common Criteria certified are certified for their random number quality as well as the other features described in the CC documents and so forth. These are publicly available documents. I Chaired the TCG Storage Industry workgroup for something like 6 years getting all this done.
There are a flurry of patents you can read from any number of companies that are storage OEMS. Don't be confused, a system OEM (like RAID makers) are not storage device OEMS.
For example, Seagate has an entire Government division for both disc and flash memory which have these security features with the necessary security certifications. Just to mention one.
If you read my work in the early 2000s it is explicitly designed for one-time pad creation and use. There are of course lots of details. I am giving an invited keynote at the flashmemorysummit.com the week of August 3, 2022 where you can hear more about this and will be in Santa Clara County at that time. I think free attendance will get you access to my keynote.
My topic will be on cryptocurrency and NFT security management (based on options available or which could be available on TCG standards for all storage devices).
So yes. If you order 1,000,000 pci/E-VMe pairs in one order to a OEM like Seagate, they could quote you on one time pad one time use pci drive pairs. It ain't that hard if somebody wants them and can buy enough of them. All the basic stuff needed, including the PuK technology is already there.
