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Trust representation needs a collection of languages to express various factors in
federated trust management, plus a set of protocols to make different languages
interoperable. Expression of trust facts such as credentials, trust intentions and trust
behaviors, which describe the identities and their attributes, willingness to act or
willingness to accept actions, and the externally observable properties of the actions
themselves, is necessary in trust representation of the network device configuration. All existing and future authentication
technologies need to be supported, and all types of policies describing all possible
trust intentions need to be accommodated in trust representation. Meanwhile
interoperable protocols need to be provided for all possible expression formats across
trust domains.
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