Digital Certificates: PKI

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Digital Certificates: PKI:

X.509 was developed from the X.500 standard. X.500 is a directory service standard that was ratified by the International Telecommunications Union. The objective was to develop an accessible, easy-to-use electronic directory of people provided for all Internet users.

The X.500 directory standard specifies a common root of a hierarchical tree. Picture an upside down tree, the root of the tree is at the top level, and all other containers are below it. A CN= before a username represent it as a common name, a C= precedes a “country” and an O= precedes “organization.” Each X.500 local directory is considered a directory system agent. The DSA can represent either single or multiple organizations.

Each DSA connects to…

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