@asimilon I’m well aware that private keys should remain private.
The code I shared is solely for the purpose of loading public openssl keys into the juce::RSAKey class, because no one has shared how to do that on the forum as of yet, and jules stated over a decade ago that supporting openssl keys in the juce RSAKey class is not on his todo list: (RSAKey and openssl compatibilities - #2 by jules).
Consider the code I shared as a starting place for supporting openssl keys in the juce::RSAKey class.
It is by no means a complete solution for us JUCE users.