certstrap
Tool for bootstrapping CAs, certificate requests, and signed certificates
Certstrap is a certificate manager for bootstrapping one's own certificate authority and public key infrastructure. certstrap can be used if you do not feel like dealing with openssl, its myriad of options or config files.
There is no official package available for openSUSE Leap 15.5Distributions
openSUSE Tumbleweed
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Unsupported distributions
The following distributions are not officially supported. Use these packages at your own risk.