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CRL for a revoked cert of Verisign CA. There are two different states of revocation defined in RFC 5280: Revoked A certificate is irreversibly revoked if, for example, it is discovered that the certificate authority (CA) had improperly issued a certificate, or if a private-key is thought to have been compromised.
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]
Whether it’s done through the Illinois Department of Revenue or the state’s comptroller, a taxpayer looking to these platforms to check on the status of their refund must be ready to provide ...
Answer all digital assets questions: Every taxpayer who files Forms 1040, 1040-SR, 1040-NR, 1041, 1065, 1120 and 1120S must check one box answering either “Yes” or “No” to the digital ...
The standard U.S. individual tax return is Form 1040. There are several variations of this form, such as the 1040EZ and the 1040A, as well as many supplemental forms. U.S. citizens and residents who realize gross income in excess of a specified amount (adjusted annually for inflation) are required by law to file Federal income tax returns (and ...
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An attacker with the ability to present a compromised certificate likely also has the ability to prevent the client performing an online revocation status check; in this case, failing-soft effectively provides no protection at all. Browsers have chosen this arm of the dilemma and preferred availability over security. [19]