In the US, insults are not something for which you can be prosecuted. Calling someone a son of a bitch is not defamatory. No one believes you are really the child of a dog. So that is an opinion. Defamation requires a false factual statement. Truth is a complete defense.
What is Public Key Infrastructure (PKI)? Public Key Infrastructure (PKI) is a set of hardware, software, people, policies, and procedures needed to create, manage, distribute, use, store, and revoke digital certificates. In cryptography, a PKI is an arrangement that binds public keys with respective user identities by means of a certificate authority (CA). Wikipedia.org
If you use a computer at work, you can use the. PKI certificates on your Common Access Card. (CAC) to log on to your computer, digitally sign. and encrypt e-mail and other documents, and. establish secure Internet sessions. This guide will take you through the steps. necessary to use PKI certificates to perform these. functions.