user95571: I am trying to create a cold wallet using SBC such as raspberry pi (not raspberry pi).
I wonder if the random generator is secure enough to generate random wallet address, for both BTC and ETH.
I heard there were fatal flaw in Android random number generator before. Is it possible that SBC can have the same issue?

user132451: The TRNG in every modern rPi is indeed quality high entropy
/dev/hwrng "seeds" (feed extra entropy to) the /dev/urandom device
Take a look in the /var/log/syslog file
need rng-tools.service running
apt policy rng-tools
Also check haveged is in the kernel.
Good overview here
https://hackaday.com/2017/11/02/what-is-entropy-and-how-do-i-get-more-of-it
Also check out Easyseed https://github.com/nym-zone/easyseed
Use an rPi with no networking hardware, ideally wipe it securely between sessions.

95571: <p>I am trying to create a cold wallet using SBC such as raspberry pi (not raspberry pi).</p>
<p>I wonder if the random generator is secure enough to generate random wallet address, for both BTC and ETH.</p>
<p>I heard there were fatal flaw in Android random number generator before. Is it possible that SBC can have the same issue?</p>
 132451: <p>The TRNG in every modern rPi is indeed quality high entropy</p>
<p>/dev/hwrng &quot;seeds&quot; (feed extra entropy to) the /dev/urandom device</p>
<p>Take a look in the /var/log/syslog file</p>
<p>need rng-tools.service running</p>
<p>apt policy rng-tools</p>
<p>Also check haveged is in the kernel.</p>
<p>Good overview here</p>
<p><a href="https://hackaday.com/2017/11/02/what-is-entropy-and-how-do-i-get-more-of-it" rel="nofollow noreferrer">https://hackaday.com/2017/11/02/what-is-entropy-and-how-do-i-get-more-of-it</a></p>
<p>Also check out Easyseed <a href="https://github.com/nym-zone/easyseed" rel="nofollow noreferrer">https://github.com/nym-zone/easyseed</a></p>
<p>Use an rPi with no networking hardware, ideally wipe it securely between sessions.</p>
