Poudriere 

Stable jail for poudriere-devel:

RSA signing key for cryptographic verification of the repository. Optional.

This information is largely from Glen Barber’s page https://glenbarber.us/2012/06/11/Maintaining-Your-Own-pkgng-Repository.html

Add this line to /usr/local/etc/poudriere.conf:

On any system that uses the packages you should copy the /usr/local/etc/ssl/certs/pkg.cert file over and put it in the same place (DO NOT COPY THE pkg.key file) and add these lines to /usr/local/etc/pkg/repos/myrepo.conf:

Now the downloaded packages are verified that they have the correct cryptographic signatures before installation.