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  2. Let's Encrypt - Wikipedia

    en.wikipedia.org/wiki/Let's_Encrypt

    The root certificate was used to sign two intermediate certificates, [44] which are also cross-signed by the certificate authority IdenTrust. [7] [45] One of the intermediate certificates is used to sign issued certificates, while the other is kept offline as a backup in case of problems with the first intermediate certificate. [44]

  3. Saylor Academy - Wikipedia

    en.wikipedia.org/wiki/Saylor_Academy

    On its website, the foundation offers 317 free, college-level courses, which are selected as typical courses in high enrollment majors at traditional U.S. colleges. [3] Content is accessible without needing to register or log into the website; however an account is required to gain access to final exams and a free certificate of completion. [1]

  4. Public key infrastructure - Wikipedia

    en.wikipedia.org/wiki/Public_key_infrastructure

    An alternative approach to the problem of public authentication of public key information is the web-of-trust scheme, which uses self-signed certificates and third-party attestations of those certificates. The singular term "web of trust" does not imply the existence of a single web of trust, or common point of trust, but rather one of any ...

  5. HTTPS - Wikipedia

    https://en.wikipedia.org/wiki/HTTPS

    The user trusts the certificate authority to vouch only for legitimate websites (i.e. the certificate authority is not compromised and there is no mis-issuance of certificates). The website provides a valid certificate, which means it was signed by a trusted authority. The certificate correctly identifies the website (e.g., when the browser ...

  6. View, print, and use your Restaurant.com certificates

    help.aol.com/articles/view-and-print-your...

    Once you've installed it, you can use it to view your certificates and show these at restaurants. 1. Open the Restaurant.com app on your mobile device. 2. Tap Account to sign in. 3. Tap My Certificates. 4. Find the certificate you'd like to show. 5. Tap Use Now.

  7. Thawte - Wikipedia

    en.wikipedia.org/wiki/Thawte

    Thawte used to issue free email certificates and the Thawte Web of Trust was the optional identity verification mechanism for it. To obtain a free Thawte email certificate, a person needed to sign up for a Thawte FreeMail account which allowed a person to create as many certificates as they wanted.

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