Section 03: Public Key Infrastructure
Public Key Infrastructure
PKI (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.
CA (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 made about the private key that corresponds to the certified public key.
RA (Registration authority)
Registration authorities exist for many standards organizations, such as ANNA (Association of National Numbering Agencies for ISIN), the Object Management Group, W3C, IEEE and others. In general, registration authorities all perform a similar function, in promoting the use of a particular standard through facilitating its use.
Digicert
DigiCert, Inc. is an American digital security company headquartered in Lehi, Utah, with offices in Australia, Ireland, Japan, India, France,South Africa, Switzerland and United Kingdom. As a certificate authority (CA) and trusted third party, DigiCert provides the public key infrastructure (PKI) and validation required for issuing digital certificates or TLS/SSL certificates.
Self signed certificate
In cryptography and computer security, self-signed certificates are public key certificates that are not issued by a certificate authority (CA). These self-signed certificates are easy to make and do not cost money. However, they do not provide any trust value.
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