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  2. Certificate authority - Wikipedia

    en.wikipedia.org/wiki/Certificate_authority

    Worldwide, the certificate authority business is fragmented, with national or regional providers dominating their home market. This is because many uses of digital certificates, such as for legally binding digital signatures, are linked to local law, regulations, and accreditation schemes for certificate authorities.

  3. IdenTrust - Wikipedia

    en.wikipedia.org/wiki/IdenTrust

    As a certificate authority (CA), IdenTrust provides public key infrastructure (PKI) and validation for digital certificates, including TLS/SSL certificates, email security via S/MIME certificates, digital signature certificates, code signing certificates and x.509 certificates for protecting network and IoT devices.

  4. Public key certificate - Wikipedia

    en.wikipedia.org/wiki/Public_key_certificate

    In cryptography, a public key certificate, also known as a digital certificate or identity certificate, is an electronic document used to prove the validity of a public key. [ 1 ] [ 2 ] The certificate includes the public key and information about it, information about the identity of its owner (called the subject), and the digital signature of ...

  5. Public key infrastructure - Wikipedia

    en.wikipedia.org/wiki/Public_key_infrastructure

    A registration authority (RA) which verifies the identity of entities requesting their digital certificates to be stored at the CA; A central directory—i.e., a secure location in which keys are stored and indexed; A certificate management system managing things like the access to stored certificates or the delivery of the certificates to be ...

  6. Use AOL Certified Mail to confirm legitimate AOL emails

    help.aol.com/articles/what-is-aol-certified-mail

    When you open the email, you'll also see the Certified Mail banner above the message details. When you get a message that seems to be from AOL, but it doesn't have those 2 indicators, and it isn't alternatively marked as AOL Official Mail, it might be a fake email. Make sure you mark it as spam and don't click on any links in the email.

  7. Certified email - Wikipedia

    en.wikipedia.org/wiki/Certified_email

    Certified email (known as Posta elettronica certificata in Italy, or PEC in short) is a special type of email in use in Italy, [1] Switzerland, [2] Hong Kong [3] and Germany. [4] Certified email is meant to provide a legal equivalent of the traditional registered mail , where users are able to legally prove that a given email has been sent and ...