ENIn public key infrastructure (PKI) systems, a certificate signing request (also CSR or certification request) is a message sent from an applicant to a certif...
ENIn the operation of some cryptosystems, usually public key infrastructures (PKIs), a certificate revocation list (CRL) is a list of certificates (or more spe...
ENAn identity document (also called a piece of identification or ID, or colloquially as papers) is any document which may be used to prove a person's identity.
certificate of lateness (issued by a railroad company, etc.)
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ENA delay certificate (遅延証明書 chien shoumei sho, "certificate of lateness") or Bescheinigung über Zugverspätung ("certificate about train delay") is a documenta...