In C (using openssl):<p>* <a href="http:&#x2F;&#x2F;blog.cros13.net&#x2F;2014&#x2F;08&#x2F;cheap-entropy-using-your-rtl-sdr-as.html" rel="nofollow">http:&#x2F;&#x2F;blog.cros13.net&#x2F;2014&#x2F;08&#x2F;cheap-entropy-using-your-rtl-...</a><p>* <a href="https:&#x2F;&#x2F;github.com&#x2F;pwarren&#x2F;rtl-entropy" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;pwarren&#x2F;rtl-entropy</a><p>In Go, potentially (using its native encryption library, possibly a worthy trade-off in terms of security and speed(0))<p>* <a href="https:&#x2F;&#x2F;github.com&#x2F;jpoirier&#x2F;gortlsdr" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;jpoirier&#x2F;gortlsdr</a><p>* <a href="https:&#x2F;&#x2F;github.com&#x2F;porjo&#x2F;hamsdr" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;porjo&#x2F;hamsdr</a><p>* <a href="https:&#x2F;&#x2F;github.com&#x2F;bemasher&#x2F;rtlamr" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;bemasher&#x2F;rtlamr</a><p>0: <a href="https:&#x2F;&#x2F;github.com&#x2F;rfjakob&#x2F;gocryptfs#performance" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;rfjakob&#x2F;gocryptfs#performance</a>