office for IT security in Germany analysed the rng in linux kernel 4.9
and all changes made up to 4.17).
* [https://salsa.debian.org/tookmund-guest/pgpcr/issues/16](checking for
available entropy)
[federal office for IT security in Germany analysed the rng in linux kernel 4.9 and all changes made up to 4.17](https://www.bsi.bund.de/SharedDocs/Downloads/EN/BSI/Publications/Studies/LinuxRNG/LinuxRNG_EN.pdf?__blob=publicationFile&v=10).
* [checking for available entropy](https://salsa.debian.org/tookmund-guest/pgpcr/issues/16)