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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.
This reversible status can be used to note the temporary invalidity of the certificate (e.g., if the user is unsure if the private key has been lost). If, in this example, the private key was found and nobody had access to it, the status could be reinstated, and the certificate is valid again, thus removing the certificate from future CRLs.
If revocation status is unavailable (which may be benign or due to an attack), a client is faced with a dilemma when evaluating a certificate: it may fail-soft and assume that the certificate is still valid; or it may fail-hard and assume that the certificate has been revoked.
Checking revocation status requires an "online" check; e.g., checking a certificate revocation list or via the Online Certificate Status Protocol. [16] Very roughly this is analogous to a vendor who receives credit-cards first checking online with the credit-card issuer to find if a given card has been reported lost or stolen.
The EPFO's top decision-making body is the Central Board of Trustees (CBT), [2] [3] a statutory body established by the Employees' Provident Fund and Miscellaneous Provisions (EPF&MP) Act, 1952. [4] As of 2021, more than ₹ 15.6 lakh crore (US$209 billion) are under EPFO management.
This class of status code indicates the client must take additional action to complete the request. Many of these status codes are used in URL redirection. [2]A user agent may carry out the additional action with no user interaction only if the method used in the second request is GET or HEAD.
A request for limitation or revocation can only be filed by the proprietor(s) of the patent. [1] [9] The request may be filed at any time [1] throughout the entire term of the European patent. [10] [11] According to the Guidelines, the request can even be filed after expiry of the patent. [12]
A Notice of Intent to Revoke (NOIR) is a communication sent by the United States Citizenship and Immigration Services to a petitioner about a previously approved petition, telling him or her that the USCIS intends to revoke the petition, along with the reasons for revocation, and giving the petitioner a fixed amount of time to respond. [1]