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PKI certificates issued by Dartmouth College onto eTokens are currently
valid for four years or until the owner's account expires in the DND. PKI
certificates issued onto a computer's hard drive are currently valid for two
years or until the owner's account expires in the DND. You do not need to get
another certificate until the one you have expires. You can get more than one
certificate, but having more than one may cause problems in other PKI
applications.
