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1. A newer certificate has been issued to the user or computer 2. The private key has become known to someone other than the holder 3. The user or computer is no longer employed by the company
A Digital Signature Certificate, is a digital identity of the sender filing the documents through internet .Digital Signature Certificate is a digital equivalent of a hand written signature which has an extra data attached electronically to any message or a document.
Digital Certificate
digital certificate (aka digital ID, digital signature)
Extended Validation Certificate.
A digital certificate confirms the information has come from the source it's claimed to be, and that the site is encrypted for transactions to be exchanged.
A bail bondsman can ask the court to revoke a bond, but the judge alone has the final say whether a bail bond may be revoked.
Certificate in digital applications CiDA
Its used to prove you are who you say you are.
Digital certificates are verified through the use of another certificate, creating a chain of certificates that ends with the root certificate The issuer of a certificate is called a certification authority (CA). The owner of the root certificate is the root certification authority.
Certification Authority example: Verisign
the web site's Digital Certificate