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2. Public key certificate - Wikipedia

   en.wikipedia.org/wiki/Public_key_certificate

   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 ...

3. How AOL uses SSL to protect your account - AOL Help

   help.aol.com/articles/how-aol-uses-ssl-to...

   Credit card security. When you make a purchase on AOL, we'll only finish the transaction if your browser supports SSL. As you enter your credit card number, SSL encodes it so it's transmitted in a format that prevents eavesdropping or data theft. When it's received by our secure server, your credit card number is never transmitted over the ...

4. HTTPS - Wikipedia

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

   To prepare a web server to accept HTTPS connections, the administrator must create a public key certificate for the web server. This certificate must be signed by a trusted certificate authority for the web browser to accept it without warning. The authority certifies that the certificate holder is the operator of the web server that presents it.

5. Let's Encrypt - Wikipedia

   en.wikipedia.org/wiki/Let's_Encrypt

   Let's Encrypt is a non-profit certificate authority run by Internet Security Research Group (ISRG) that provides X.509 certificates for Transport Layer Security (TLS) encryption at no charge. It is the world's largest certificate authority, [2] used by more than 300 million websites, [3] with the goal of all websites being secure and using HTTPS.

6. Self-signed certificate - Wikipedia

   en.wikipedia.org/wiki/Self-signed_certificate

   In cryptography and computer security, self-signed certificates are public key certificates that are not issued by a certificate authority (CA). These self-signed certificates are easy to make and do not cost money. However, they do not provide any trust value. For instance, if a website owner uses a self-signed certificate to provide HTTPS ...

7. Extended Validation Certificate - Wikipedia

   en.wikipedia.org/.../Extended_Validation_Certificate

   An Extended Validation Certificate ( EV) is a certificate conforming to X.509 that proves the legal entity of the owner and is signed by a certificate authority key that can issue EV certificates. EV certificates can be used in the same manner as any other X.509 certificates, including securing web communications with HTTPS and signing software ...