What Is Certificate Authority (CA)?

Whether online shopping, banking, or dating, communication over the Internet has become a natural part of our everyday lives. Thanks to the critical public infrastructure that uses digital certificates to safeguard and verify the identity of participants in network-based communications. Without a doubt, the role of CA is crucial for maintaining data security and integrity. A Certificate Authority (CA) is an authoritative third party that can validate the authenticity of a certificate. These entities are trusted because they verify the information and certify digital certificates. They are part of the critical public infrastructure along with registration authorities who confirm the information provided by a requester. Certificates are the lifeblood of any business that relies on secure online communication and transactions. The certificate authority's role is to issue, manage, and maintain those certificates while meeting designated standards. They do so through their dedicated infrastructure and strict policies to protect against various forms of abuse. These assertions are bound together within their certificate/public critical infrastructure so that all parties know who received what certificate and, as such, whom to trust in the event of an authentication or connection request. CA trust is determined by the public key used to sign its certificates. To trust that a website is whom it claims to be, you must first trust the CA that issued the website's certificate. CAS are the gatekeepers of the Internet. They are responsible for administering and revoking certificates. Many people trust CAs such as Verisign, Comodo, and Symantec. They have been in business for many years and have issued millions of website certificates. You want to make sure that someone is whom they say they are. A certificate authority can help with that! It's like a bouncer for the internet age: when someone comes along and says, "Hi, it's me! Jeff," the CA checks their ID and lets them in if it checks out. The CA also provides identification information, so other parties know whom they can trust.