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In cryptography, a PKI is an arrangement that binds public keys with respective identities of entities (like people and organizations). [1] [2] The binding is established through a process of registration and issuance of certificates at and by a certificate authority (CA). Depending on the assurance level of the binding, this may be carried out ...
Registration authority. For the concept in cryptography, see Public key infrastructure. Registration authorities (RAs) exist for many standards organizations, such as ANNA (Association of National Numbering Agencies for ISIN), the Object Management Group, W3C, and others. In general, registration authorities all perform a similar function, in ...
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 ...
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 ...
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 ...
The roles registration authority and certification authority are usually separate business units under separation of duties to reduce the risk of fraud. An organization's trusted root certificates can be distributed to all employees so that they can use the company PKI system.
The Certificate Management Protocol (CMP) is an Internet protocol standardized by the IETF used for obtaining X.509 digital certificates in a public key infrastructure (PKI). CMP is a very feature-rich and flexible protocol, supporting many types of cryptography. CMP messages are self-contained, which, as opposed to EST, makes the protocol ...
In cryptography, a certificate revocation list (CRL) is "a list of digital certificates that have been revoked by the issuing certificate authority (CA) before their scheduled expiration date and should no longer be trusted". [1]