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  2. Online Certificate Status Protocol - Wikipedia

    en.wikipedia.org/wiki/Online_Certificate_Status...

    The Online Certificate Status Protocol (OCSP) is an Internet protocol used for obtaining the revocation status of an X.509 digital certificate. [2] It is described in RFC 6960 and is on the Internet standards track.

  3. OCSP stapling - Wikipedia

    en.wikipedia.org/wiki/OCSP_stapling

    OCSP stapling is designed to reduce the cost of an OCSP validation, both for the client and the OCSP responder, especially for large sites serving many simultaneous users. However, OCSP stapling supports only one OCSP response at a time, which is insufficient for certificate chains with intermediate CA certs. [26] [27]

  4. Certificate revocation list - Wikipedia

    en.wikipedia.org/wiki/Certificate_revocation_list

    An alternative to using CRLs is the certificate validation protocol known as Online Certificate Status Protocol (OCSP). OCSP has the primary benefit of requiring less network bandwidth, enabling real-time and near real-time status checks for high volume or high-value operations.

  5. Validation authority - Wikipedia

    en.wikipedia.org/wiki/Validation_authority

    In public key infrastructure, a validation authority (VA) is an entity that provides a service used to verify the validity or revocation status of a digital certificate per the mechanisms described in the X.509 standard and RFC 5280 (page 69).

  6. Certificate revocation - Wikipedia

    en.wikipedia.org/wiki/Certificate_revocation

    The Online Certificate Status Protocol (OCSP) allows clients to interactively ask a server (an OCSP responder) about a certificate's status, receiving a response that is cryptographically authenticated by the issuing CA. [29] It was designed to address issues with CRLs. [30] A typical OCSP response is less than 1 kB. [31]

  7. Comparison of TLS implementations - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_TLS...

    Certificate verification methods. Implementation Application-defined PKIX path validation [113] CRL [114] ... OCSP DANE (DNSSEC) CT Encryption algorithms.

  8. Certificate Transparency - Wikipedia

    en.wikipedia.org/wiki/Certificate_Transparency

    A log appends new certificates to an ever-growing Merkle hash tree. [1]: §4 To be seen as behaving correctly, a log must: Verify that each submitted certificate or precertificate has a valid signature chain leading back to a trusted root certificate authority certificate. Refuse to publish certificates without this valid signature chain.

  9. SCVP - Wikipedia

    en.wikipedia.org/wiki/SCVP

    The SCVP server's response contains a set of certificates making up a valid path between the certificate in question and one of the trusted certificates. The response may also contain proof of revocation status, such as OCSP responses, for the certificates in the path. Once a certification path has been constructed, it needs to be validated.