A certificate authority is a trusted entity that issues digital certificates that are verifiable small data files that contain identity credentials to help websites, people, and devices represent their authentic online identity. Certificate authorities are a critical part of the Internet's Public Key Infrastructure (PKI), and they play a major role in Internet operations by issuing Secure Sockets Layer (SSL) certificates. The certificate authority market includes players offering various types of certificates, such as SSL certificates, secure email certificates, code signing certificates, and authentication certificates. Additionally, it includes government entities and non-profit organizations.
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