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  2. Self-signed certificate - Wikipedia

    en.wikipedia.org/wiki/Self-signed_certificate

    RFC 5280 defines self-signed certificates as "self-issued certificates where the digital signature may be verified by the public key bound into the certificate" [7] whereas a self-issued certificate is a certificate "in which the issuer and subject are the same entity". While in the strict sense the RFC makes this definition only for CA ...

  3. Certificate revocation - Wikipedia

    en.wikipedia.org/wiki/Certificate_revocation

    Certificate revocation is "an important tool" for dealing with attacks and accidental compromises. RFC 9325 places a normative requirement on TLS implementations to have some means of distrusting certificates. [9]

  4. 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 ...

  5. Fix security certificate error messages in Internet Explorer

    help.aol.com/articles/message-the-security...

    Seeing security certificate errors when visiting certain websites? Learn how to remedy this issue in Internet Explorer.

  6. Root certificate - Wikipedia

    en.wikipedia.org/wiki/Root_certificate

    A root certificate is the top-most certificate of the tree, the private key which is used to "sign" other certificates. All certificates signed by the root certificate, with the "CA" field set to true, inherit the trustworthiness of the root certificate—a signature by a root certificate is somewhat analogous to "notarizing" identity in the ...

  7. Cancel or reactivate your AOL account

    help.aol.com/articles/account-management-cancel...

    Sign into MyAccount.; If you aren't already on your Subscriptions page, click My Services | My Subscriptions.; Click Manage next to the plan you'd like to change.; Under products, click Change Plan.

  8. Certificate authority - Wikipedia

    en.wikipedia.org/wiki/Certificate_authority

    Any site using self-signed certificates acts as its own CA. Commercial banks that issue EMV payment cards are governed by the EMV Certificate Authority, [ 5 ] payment schemes that route payment transactions initiated at Point of Sale Terminals ( POS ) to a Card Issuing Bank to transfer the funds from the card holder's bank account to the ...

  9. Public key certificate - Wikipedia

    en.wikipedia.org/wiki/Public_key_certificate

    The digital certificate chain of trust starts with a self-signed certificate, called a root certificate, trust anchor, or trust root. A certificate authority self-signs a root certificate to be able to sign other certificates. An intermediate certificate has a similar purpose to the root certificate – its only use is to sign other certificates.