Digital Certificate Operation in a Complex Environment
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Subject Within the context of PKI, the term 'subject' is used to refer to the entity named in the subject field of a certificate. X.509 uses distinguished names (DN) to identify subjects. A subject field in a X.509 certificate might look like this:
C=UK, O=eScience, OU=Authority, CN=CA
IETF definition: "A subject is the entity (AA, CA, or EE) named in a certificate, either a PKC or AC. Subjects can be human users, computers (as represented by Domain Name Service (DNS) names or Internet Protocol (IP) addresses), or even software agents".
http://www.ietf.org/internet-drafts/draft-ietf-pkix-roadmap-09.txt
Oxford University Computing Services Mimas Athens access management services Oxfore e-Science Centre Systems and Electronic Resources Service Joint Information Systems Committee