How to Inspire Trust Using SSL
For starters, just the simple act of encrypting your website is going to build some small level of trust between your company and your customers. People value their personal information, and knowing that you've protected it from the potentially malicious eyes of a third party is going to offer some reassurance.
But the truth is that in order for people to trust you completely, you're going to need to undergo business authentication. Business authentication is when a Certificate Authority vets your company to make sure it is a legitimate legal entity.
Bear in mind that to receive a signed certificate, the CA essentially has to vouch for your identity. The browsers, the applications that read the certificates and determine whether or not a user can trust your website, do not trust you individually. They trust the Certificate Authorities. If the CA says you're legitimate, the browser is going to essentially take them at their word.