SSL certificate

SSL certificate is used to encrypt the data and tell web client with whom secure channel is established.

If information of domain name in SSL certificate does not match domain name of the website that is visited then most web browsers will stop loading that web site data and present this data to a visitor.

SSL certificate is issued by well trusted SSL authorities, and a number of these authorities are added to a browser.

However SSL certificate can be self-signed. It will provide encryption, but it cannot be trusted by browsers.

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