Quote from: ETFbitcoin on Today at 08:50:26 AM

Quote from: NinjaBitcoiner on November 17, 2022, 12:31:07 PM

Quote from: ETFbitcoin on November 17, 2022, 12:22:17 PM

--snip--

so using CSPRNG on new OS installation and just after reboot is not secure enough?

An expert say it's not secure enough only when your device has very little activity (such as headless or embedded device)[1]. But his research was performed a decade ago, so i don't know if it's applicable in 2022. Besides, average customer PC have lots activity including mouse movement, keyboard input and various application which opened on background after you login. So i wouldn't worry about insufficient entropy.

Quote from: NinjaBitcoiner on November 17, 2022, 12:31:07 PM

So what time should i wait before booting system to make sure there's enough entropy?

According to research i mentioned earlier, at least 1 minute. Although i'd recommend to do some activity (such as checking system log, perform internet speed test or use file explorer) to increase the entropy instead.

Quote from: NinjaBitcoiner on November 17, 2022, 12:31:07 PM

Also i guess on live machine/VM it's not safe to use CSPRNG?

If both live machine and VM has lots of activity and you wait few minutes, i don't see reason why it's not safe.

[1] https://dl.acm.org/doi/10.5555/2362793.2362828

The same applies to offline cold storage PC as well? If the system is not connected to internet. Then also there will be enough sources of entropy right?