Root Authority Certificate College Park Certificate Authority

Public Key Infrastructure heirarchy

The College Park PKI Infrastructure comprises four Certificate Authorities.

	+------------- | v	<---+     | |
	Root Certificate	^ | ----+
	| | v
	Intermediate Certificate

+--- | ------- | | v	------- | ---+      | | |    +--- | v ---+	| | | |    +---   -------    +---     ---+    | v	-------   ---+    |         | | v
Identity Cert-Signing Certificate	Privacy Cert-Signing Certificate	Internet Server Cert-Signing Certificate	Object Cert-Signing Certificate
| | v	| | v	| | v	| | v
Identity Certificate John Bull	Privacy Certificate John Bull	Internet Server Certificate cert.umd.edu	Object Certificate umapplet.jar

• The Identity CA mediates email signing and SSL client authentication
• The Privacy CA mediates email encryption
• The Internet Server CA mediates SSL server authentication
• The Object Signing CA mediates the creation of trusted mobile code