Certificate

As it relates to cryptography, a certificate binds a digital signature with a public key as a source of identification. It will include information, such as the name of an individual or company, contact information, and more. A certificate can verify the owner of public key as well. In the basic public key scenario, the signature on a digital certificate will be that of a CA (certificate authority). When it comes to verifying a particular site or individual, the certificate will contain the digital signature of a user, the case with a signed SLL (secure sockets layer). In both instances, the signatures attest that the names and other information correspond to the public key. Corruptions and alterations related to a private key may lead to the revoking of a certificate. This may be the case when the assigned individual changes jobs or residences. Users are able to check the validation of someone else’s certificate by referring to the Online Certificate Status Protocol. This third-party server will parse a list of revoked certificates and transfer a respond to the client in request.