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However, it is possible to move certificate validation functionality into a dedicated validation authority authorized by the offline root CA. To better understand how an offline root CA can greatly improve the security and integrity of a PKI, it is important to realize that a CRL is specific to the CA which issued the certificates on the list.
In cryptography and computer security, a root certificate is a public key certificate that identifies a root certificate authority (CA). [1] Root certificates are self-signed (and it is possible for a certificate to have multiple trust paths, say if the certificate was issued by a root that was cross-signed) and form the basis of an X.509-based ...
In the X.509 system, there are two types of certificates. The first is a CA certificate. The second is an end-entity certificate. A CA certificate can issue other certificates. The top level, self-signed CA certificate is sometimes called the Root CA certificate. Other CA certificates are called intermediate CA or subordinate CA certificates.
The OCSP responder uses the certificate serial number to look up the revocation status of Alice's certificate. The OCSP responder looks in a CA database that Carol maintains. In this scenario, Carol's CA database is the only trusted location where a compromise to Alice's certificate would be recorded.
The client uses the CA certificate to authenticate the CA signature on the server certificate, as part of the authorizations before launching a secure connection. [3] Usually, client software—for example, browsers—include a set of trusted CA certificates. This makes sense, as many users need to trust their client software.
A certificate authority (CA) that stores, issues and signs the digital certificates; A registration authority (RA) which verifies the identity of entities requesting their digital certificates to be stored at the CA; A central directory—i.e., a secure location in which keys are stored and indexed;
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An applicant, "The natural person or Legal Entity that applies for (or seeks renewal of) a Certificate", [6] requests a certificate from a CA. The CA issues a special precertificate, a certificate which carries a poison extension signaling that it should not be accepted by user agents. The CA sends the precertificate to logs.