You need to have a private key to sign, otherwise it would be useless as a “signature”.
For signing (in the non-ring case), you encrypt with your private key and they decrypt with your public key, whereas in normal encryption (again, non-ring) you encrypt with their public key and they decrypt with their private key.
You need to have a private key to sign, otherwise it would be useless as a “signature”.
For signing (in the non-ring case), you encrypt with your private key and they decrypt with your public key, whereas in normal encryption (again, non-ring) you encrypt with their public key and they decrypt with their private key.