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  2. Certificate authority - Wikipedia

    en.wikipedia.org/wiki/Certificate_authority

    Certificate authority. In cryptography, a certificate authority or certification authority (CA) is an entity that stores, signs, and issues digital certificates. A digital certificate certifies the ownership of a public key by the named subject of the certificate. This allows others (relying parties) to rely upon signatures or on assertions ...

  3. Root certificate - Wikipedia

    en.wikipedia.org/wiki/Root_certificate

    The role of root certificate as in the chain of trust. 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 ...

  4. DNS Certification Authority Authorization - Wikipedia

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

    Jacob Hoffman-Andrews. DNS Certification Authority Authorization (CAA) is an Internet security policy mechanism that allows domain name holders to indicate to certificate authorities whether they are authorized to issue digital certificates for a particular domain name. It does this by means of a "CAA" Domain Name System (DNS) resource record.

  5. Public key infrastructure - Wikipedia

    en.wikipedia.org/wiki/Public_key_infrastructure

    Public key infrastructure. A public key infrastructure (PKI) is a set of roles, policies, hardware, software and procedures needed to create, manage, distribute, use, store and revoke digital certificates and manage public-key encryption. The purpose of a PKI is to facilitate the secure electronic transfer of information for a range of network ...

  6. Public key certificate - Wikipedia

    en.wikipedia.org/wiki/Public_key_certificate

    In a typical public-key infrastructure (PKI) scheme, the certificate issuer is a certificate authority (CA), [3] usually a company that charges customers a fee to issue certificates for them. By contrast, in a web of trust scheme, individuals sign each other's keys directly, in a format that performs a similar function to a public key certificate.

  7. Certificate signing request - Wikipedia

    en.wikipedia.org/wiki/Certificate_signing_request

    Certificate signing request. In public key infrastructure (PKI) systems, a certificate signing request (CSR or certification request) is a message sent from an applicant to a certificate authority of the public key infrastructure (PKI) in order to apply for a digital identity certificate. The CSR usually contains the public key for which the ...

  8. Certificate Transparency - Wikipedia

    en.wikipedia.org/wiki/Certificate_Transparency

    Certificate Transparency (CT) is an Internet security standard for monitoring and auditing the issuance of digital certificates. [1] When an internet user interacts with a website, a trusted third party is needed for assurance that the website is legitimate and that the website's encryption key is valid. This third party, called a certificate ...

  9. X.509 - Wikipedia

    en.wikipedia.org/wiki/X.509

    An EV certificate means a certificate was issued for a domain like example.com, and a company like Example, LLC is the owner of the domain, and the owner was verified by Articles of Incorporation. Extended validation does not add any additional security controls, so the secure channel setup using an EV certificate is not "stronger" than a ...