scepclient tool is a client implementation of the Simple Certificate
Enrollment Protocol (SCEP).
This tool was written in 2005 and only got marginal updates since then.
Hence it implements an old version of the SCEP Internet Draft (version
10/11 of draft-nourse-scep). The new SCEP RFC 8894 was
released in September 2020, so the tool might not be compatible with newer
SCEP servers. It also uses default algorithms that are really not
state-of-the-art anymore (e.g.