certificate

1. In cryptography, the public key and the identity of an entity, with other information, rendered unforgeable by digitally signing the entire information with the private key of the issuing certification authority. [After X9.42] Synonym digital certificate.
2. [A] record holding security information about an information-system (IS) user and vouches to the truth and accuracy of the information it contains. [INFOSEC-99]
3. Security data sealed by an Authority. The certificate contains the security data and the seal [ECMA138].