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OCSP suffers from scalability issues. It relies on the client having network access at the time of checking the certificate's revocation status; further, the OCSP responder must be accessible and produce usable responses, or else the check will fail and the client must choose between failing-soft and failing-hard.
Browsers and other relying parties might use CRLs, or might use alternate certificate revocation technologies (such as OCSP) [4] [5] or CRLSets (a dataset derived from CRLs [6]) to check certificate revocation status. Note that OCSP is falling out of favor due to privacy and performance concerns [7] [8] [9].
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 Online Certificate Status Protocol (OCSP) stapling, formally known as the TLS Certificate Status Request extension, is a standard for checking the revocation status of X.509 digital certificates. [1]
The last certificate in the list is a trust anchor: a certificate that you trust because it was delivered to you by some trustworthy procedure; Certificate chains are used in order to check that the public key (PK) contained in a target certificate (the first certificate in the chain) and other data contained in it effectively belongs to its ...
Without revocation, an attacker would be able to exploit such a compromised or misissued certificate until expiry. [31] Hence, revocation is an important part of a public key infrastructure. [32] Revocation is performed by the issuing CA, which produces a cryptographically authenticated statement of revocation. [33]
The DPV client must be capable of providing the validation server with useful certificates and revocation information related to each certificate being validated. This includes OCSP responses, CRLs, and delta CRLs, which are critical for checking the current status of certificates.
403.15 – Client Access Licenses exceeded; 403.16 – Client certificate is untrusted or invalid; 403.17 – Client certificate has expired or is not yet valid; 403.18 – Cannot execute request from that application pool; 403.19 – Cannot execute CGIs for the client in this application pool; 403.20 – Passport logon failed; 403.21 ...