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  2. Server Name Indication - Wikipedia

    en.wikipedia.org/wiki/Server_Name_Indication

    In more detail, when making a TLS connection, the client requests a digital certificate from the web server. Once the server sends the certificate, the client examines it and compares the name it was trying to connect to with the name(s) included in the certificate. If a match occurs, the connection proceeds as normal.

  3. Online Certificate Status Protocol - Wikipedia

    en.wikipedia.org/wiki/Online_Certificate_Status...

    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.

  4. DNS-based Authentication of Named Entities - Wikipedia

    en.wikipedia.org/wiki/DNS-based_Authentication...

    Not all protocols handle Common Name matching the same way. HTTP requires that the Common Name in the X.509 certificate provided by the service matches regardless of the TLSA asserting its validity. SMTP does not require the Common Name matches, if the certificate usage value is 3 (DANE-EE), but otherwise does require a Common Name match.

  5. Public key infrastructure - Wikipedia

    en.wikipedia.org/wiki/Public_key_infrastructure

    A single sign-on server will issue digital certificates into the client system, but never stores them. Users can execute programs, etc. with the temporary certificate. It is common to find this solution variety with X.509-based certificates. [26] Starting Sep 2020, TLS Certificate Validity reduced to 13 Months.

  6. Transport Layer Security - Wikipedia

    en.wikipedia.org/wiki/Transport_Layer_Security

    In the name-based virtual server feature being provided by the application layer, all co-hosted virtual servers share the same certificate because the server has to select and send a certificate immediately after the ClientHello message. This is a big problem in hosting environments because it means either sharing the same certificate among all ...

  7. Certificate signing request - Wikipedia

    en.wikipedia.org/wiki/Certificate_signing_request

    In public key infrastructure (PKI) systems, a certificate signing request (CSR or certification request) is a message sent from an applicant to a certificate authority of the public key infrastructure (PKI) in order to apply for a digital identity certificate. The CSR usually contains the public key for which the certificate should be issued ...

  8. Encryption - Wikipedia

    en.wikipedia.org/wiki/Encryption

    In cryptography, encryption (more specifically, encoding) is the process of transforming information in a way that, ideally, only authorized parties can decode. This process converts the original representation of the information, known as plaintext , into an alternative form known as ciphertext .

  9. Public key certificate - Wikipedia

    en.wikipedia.org/wiki/Public_key_certificate

    Role-based certificate: Defined in the X.509 Certificate Policy for the Federal Bridge Certification Authority (FBCA), role-based certificates "identify a specific role on behalf of which the subscriber is authorized to act rather than the subscriber’s name and are issued in the interest of supporting accepted business practices."