Thus , the user 's public key must be published or otherwise obtained by other users .
Meaning , the user 's public key is not discoverable from only the user 's identity string and the KGC 's public key .
The user 's public key must be published or otherwise obtained by other users .
Meaning , the user 's public key is not discoverable from only the user 's identity string and the KGC 's public key .