Trusted Computing Platforms: TCPA Technology in Context
by Siani Pearson, Boris Balacheff, Liqun Chen, David Plaquin, Graeme Proudler
Multiple Smart Cards
Different smart cards can be used for different purposes, so more than one smart card may be presented to a platform during a single work session. The need to use multiple smart cards may benefit from a TP because:
A TPM can protect (and the TP can use) session authorization information on behalf of cards, while another card is connected to the platform
A TPM can protect (and the TP can use) authorization data to automatically activate cards
A smart card can transfer credits to a TPM, for use by the TPM on behalf of other cards when they are connected to the platform.
Suppose that a user has a number of smart cards and, in each session, one of these cards (a logon card) is used for authentication of the user to a host platform ...
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