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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. Public key certificate - Wikipedia

   en.wikipedia.org/wiki/Public_key_certificate

   Public key certificate. In cryptography, a public key certificate, also known as a digital certificate or identity certificate, is an electronic document used to prove the validity of a public key. [ 1][ 2] The certificate includes the public key and information about it, information about the identity of its owner (called the subject), and the ...

4. 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 ...

5. 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 ...

6. Certificate-based encryption - Wikipedia

   en.wikipedia.org/wiki/Certificate-based_encryption

   Certificate-based encryption is a system in which a certificate authority uses ID-based cryptography to produce a certificate.This system gives the users both implicit and explicit certification, the certificate can be used as a conventional certificate (for signatures, etc.), but also implicitly for the purpose of encryption.

7. Root certificate - Wikipedia

   en.wikipedia.org/wiki/Root_certificate

   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 ...