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Worldwide, the certificate authority business is fragmented, with national or regional providers dominating their home market. This is because many uses of digital certificates, such as for legally binding digital signatures, are linked to local law, regulations, and accreditation schemes for certificate authorities.
For instance, the PKIs supporting HTTPS [2] for secure web browsing and electronic signature schemes depend on a set of root certificates. A certificate authority can issue multiple certificates in the form of a tree structure. A root certificate is the top-most certificate of the tree, the private key which is used to "sign" other certificates.
Pages in category "Certificate authorities" The following 17 pages are in this category, out of 17 total. This list may not reflect recent changes. ...
A certificate authority (CA) that stores, issues and signs the digital certificates; A registration authority (RA) which verifies the identity of entities requesting their digital certificates to be stored at the CA; A central directory—i.e., a secure location in which keys are stored and indexed; A certificate management system managing ...
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, [3] used by more than 400 million websites, [4] with the goal of all websites being secure and using HTTPS.
Role-based certificate: Defined in the X.509 Certificate Policy for the Federal Bridge Certification Authority (FBCA), role-based certificates "identify a specific role on behalf of which the subscriber is authorized to act rather than the subscriber’s name and are issued in the interest of supporting accepted business practices." [26]
An example of IdenTrust certificate. IdenTrust, part of HID Global and headquartered in Salt Lake City, Utah, is a public key certificate authority that provides digital certificates to financial institutions, healthcare providers, government agencies and enterprises. [1]
In 2007, DigiCert partnered with Microsoft to develop the industry's first multi-domain (SAN) certificate. [10] In 2015, DigiCert acquired the CyberTrust Enterprise SSL business from Verizon Enterprise Solutions, becoming the world's second-largest certificate authority for high-assurance or extended validation (EV) TLS/SSL certificates. [11]