Tegrakeyhash reports 'Invalid key format'

hello chad.mcquillen,

I’m based-on Ubuntu 20.04.5, OpenSSL 1.1.1f
I do see the Invalid key format failure by using a sample key that you’ve uploaded
for instace,

 ./tegrakeyhash --pkc ~/Downloads/rsa_priv.pem 
Invalid key format

as developer guide still based-on Ubuntu 18.04 LTS, or 20.04 LTS.
here shows more details for this traditional option, i.e. /docs/man3.0/man1/openssl-genrsa.html

-traditional
Write the key using the traditional PKCS#1 format instead of the PKCS#8 format.