CompTIA Server+ Study Guide by Troy McMillan

Author:Troy McMillan
Language: eng
Format: epub
ISBN: 9781119137832
Publisher: Wiley
Published: 2016-05-25T00:00:00+00:00

Certification Authority

The certification authority (CA) is the entity that creates and signs digital certificates, generates the key pairs, maintains the certificates, and revokes them when necessary. To participate in the PKI, an entity must contact the CA and request a digital certificate. It is the ultimate authority for the authenticity for every participant in the PKI and signs each digital certificate. The certificate binds the identity of the participant to the public key.

SSL/TLS

Secure Sockets Layer (SSL) is a Transport layer protocol that provides encryption, server and client authentication, and message integrity. SSL was developed by Netscape to transmit private documents over the Internet. Transport Layer Security (TLS) is an open-community standard that provides many of the same services as SSL. TLS 1.0 is based on SSL 3.0 but is more extensible. The main goal of TLS is privacy and data integrity between two communicating applications.

SSL is related to a PKI in that a certificate is required on the server end and optionally can be used on the client end of an SSL communication. If the user verifies the server certificate and the server verifies the user certificate, the process is called mutual authentication. In the operation of SSL, the public and private keys of the server are used to encrypt the data and protect its integrity.

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