PKI or Public Key Infrastructure
The certificate for Public enemies is 12a
Public authorities have more flexibility to operate like a business.
I'm not certain of the intent of the question but it sounds like what is being asked is how you can know the actual identity of someone from their public key - i.e. how you can know that the public key really belongs to the person it purports to belong to. PKI (public key infrastructure) is one way to establish with reasonable certainty that a key really belongs to the entity that is claimed. PKI uses a system of Certificate Authorities (CA) and Registration Authorities (RA). At the top of the chain is the Registration Authority that everyone trusts. Users register their public keys with the RA. CA's also register their certificates withe the RA along with proof that they are who they say they are. CA's are repositories of public keys that the public can access. They sign the keys with their own certificates vouching for the identity of the public key owner. The identity of the CA may, in turn, be vouched for by an RA or higher CA who sign the certificate of that particular CA.
Public authorities have more flexibility to operate like a business.
Either "John Q. Public, A.A." or "John Q. Public, A.S.", depending upon whether you have an Associate in Arts degree or an Associate in Science degree.
One can receive a PKI certificate, or a public-key infrastructure certificate, is by digitally signing and publishing the public key bound to a given user.
associate of public service degree!
Police power
An argument against public authorities is that they can be easily influenced by powerful interests, leading to corruption and the prioritization of private gain over public welfare. Furthermore, public authorities may lack transparency and accountability, making it difficult for citizens to hold them responsible for their actions.
In most places, hawkers do need a peddler's certificate or license to legally sell goods or services in public spaces. This is typically required by local government authorities to regulate and monitor street vendors. The specific requirements and processes for obtaining a peddler's certificate may vary depending on the location.
No, a death certificate is a public certification that someone has died. Some information on a death certificate may be kept private.
Embedding the public key in a digital certificate protects it from impersonators by associating and binding a user's identity to the public key. A digital certificate is the user's public key that has been "digitally signed" by a trustworthy source trusted to sign it. And, instead of "trustworthy" you could use the word: reputable.