On Thu, Sep 10, 2020 at 04:06:12PM +0100, Patrick Welche wrote: > I just upgraded to ancient boxen to -current/amd64. One has its 256 bits, > the other has none?! I have tried playing spot the difference but > haven't spotted anything:
Both machines do not have a proper hardware random number generator. One of them has been seeded before and saved the entropy in /var/db/entropy-file. On the one that has not, you can manually do it by writing 32 random bytes to /dev/random with dd(1), eg. after extracting them from some machine with newer cpu (and hardware random number support) or from the properly seeded machine by reading 32bytes from /dev/urandom. Or you attach your ualea random generator usb dongle for a short while ;-) Martin
