Yeah. You don't generate a list. You have make automatically dd 16 bytes from /dev/random, pipe it through hexdump, and then use that as your seed. You don't even have to check for dupes. There are 3.4 * 10^38 possible keys; You will not pick the same one twice.
That way, you can't even accidentally reuse a seed in development, or leak that list of the previously used seeds. When something compromises the system, and you don't need it any more, it should be destroyed.
That way, you can't even accidentally reuse a seed in development, or leak that list of the previously used seeds. When something compromises the system, and you don't need it any more, it should be destroyed.