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X.509 certificates are used in many Internet protocols, including TLS/SSL, which is the basis for HTTPS, [2] the secure protocol for browsing the web. They are also used in offline applications, like electronic signatures. [3] An X.509 certificate binds an identity to a public key using a digital signature.
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.
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 Firefox web browser also provides its own list of trust anchors. The end-user of an operating system or web browser is implicitly trusting in the correct operation of that software, and the software manufacturer in turn is delegating trust for certain cryptographic operations to the certificate authorities responsible for the root certificates.
gnoMint is a free software tool for managing X.509 certification authorities (CAs). Its purpose is to offer an easy to use interface for creating certification authorities and all related elements including X.509 digital certificates, certificate signing requests (CSRs) and certificate revocation lists (CRLs).
To validate a specific CRL prior to relying on it, the certificate of its corresponding CA is needed. The certificates for which a CRL should be maintained are often X.509/public key certificates, as this format is commonly used by PKI schemes.
The CA issues a special precertificate, a certificate which carries a poison extension signaling that it should not be accepted by user agents. The CA sends the precertificate to logs. Logs return corresponding SCTs to the CA. The CA attaches SCTs collected from logs as an X.509 extension to the final certificate and provides it to the applicant.
PKI Resource Query Protocol (PRQP) is an Internet protocol used for obtaining information about services associated with an X.509 Certificate Authority.It is described by RFC 7030 published on October 23, 2013.