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  2. Certificate authority - Wikipedia

    en.wikipedia.org/wiki/Certificate_authority

    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.

  3. Root certificate - Wikipedia

    en.wikipedia.org/wiki/Root_certificate

    In cryptography and computer security, a root certificate is a public key certificate that identifies a root certificate authority (CA). [1] Root certificates are self-signed (and it is possible for a certificate to have multiple trust paths, say if the certificate was issued by a root that was cross-signed) and form the basis of an X.509-based ...

  4. DigiCert - Wikipedia

    en.wikipedia.org/wiki/DigiCert

    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]

  5. Comodo Cybersecurity - Wikipedia

    en.wikipedia.org/wiki/Comodo_Cybersecurity

    Comodo CA Limited (Sectigo): Based in the City of Salford, Greater Manchester, UK, [8] is a digital certificate authority that issues SSL and other digital certificates. In November 2018, Francisco Partners announced that Comodo Certificate Authority (Comodo CA) is rebranding as Sectigo.

  6. DNS Certification Authority Authorization - Wikipedia

    en.wikipedia.org/wiki/DNS_Certification...

    Third parties monitoring certificate authority behavior might check newly issued certificates against the domain's CAA records. RFC 8659 states; CAA records MAY be used by Certificate Evaluators as a possible indicator of a security policy violation. Such use SHOULD take into account the possibility that published CAA records changed between ...

  7. Public key infrastructure - Wikipedia

    en.wikipedia.org/wiki/Public_key_infrastructure

    An alternative approach to the problem of public authentication of public key information is the web-of-trust scheme, which uses self-signed certificates and third-party attestations of those certificates. The singular term "web of trust" does not imply the existence of a single web of trust, or common point of trust, but rather one of any ...

  8. Online Certificate Status Protocol - Wikipedia

    en.wikipedia.org/wiki/Online_Certificate_Status...

    Alice and Bob have public key certificates issued by Carol, the certificate authority (CA). Alice wishes to perform a transaction with Bob and sends him her public key certificate. Bob, concerned that Alice's private key may have been compromised, creates an 'OCSP request' that contains Alice's certificate serial number and sends it to Carol.

  9. EJBCA - Wikipedia

    en.wikipedia.org/wiki/EJBCA

    EJBCA (formerly: Enterprise JavaBeans Certificate Authority) is a free software public key infrastructure (PKI) certificate authority software package maintained and sponsored by the Swedish for-profit company PrimeKey Solutions AB, which holds the copyright to most of the codebase, being a subsidiary for Keyfactor Inc. based in United States.

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