Hi, new to GnuTLS
Using GnuTLS 3.6.5 (built on CentOS 7.6)
What I am looking for is a simple utility program to generate public key
from private key *without* needing to generate a x.509 certificate.
Use case is OpenDKIM on mail servers
I figured out easy enough how to use certtool to generate ed25519
private key, but I need to generate public key to stick in the DKIM DNS
record.
I am guessing there is probably simple C code out there somewhere that
can do it, but I didn't see public key export options in certtool man
page to do it.
RSA private to public would be nice too, I can do that conversion w/
openssl but my openssl is too old for ed25519.
I know it probably is too early to use ed25519 dkim signing in the wild,
but I want to set up signing from a web host that only ever e-mails me
so that I can test validation and make sure my OpenDKIM (built against
GnuTLS) validates it properly.
Thank you for any suggestions.
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