![]() ![]() Part of this process involves checking that the certificate is not listed in a CRL. When a web browser connects to a site using TLS, its digital certificate is checked for anomalies or problems. The certificate, which is signed by the issuing CA, also provides proof of the certificate owner's identity. What is a digital certificate?ĭigital certificates are used in the encryption process to secure communications and create trust in online transactions - most often, by using the Transport Layer Security/Secure Sockets Layer ( TLS/ SSL) protocol. The CRL file is signed by the CA to prevent tampering. It is a type of blocklist that includes certificates that should no longer be trusted and is used by various endpoints, including web browsers, to verify if a certificate is valid and trustworthy. A certificate revocation list (CRL) is a list of digital certificates that have been revoked by the issuing certificate authority ( CA) before their actual or assigned expiration date. ![]()
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