Attestation

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In the Trusted Computing Group community, a trusted-platform device is said to attest to its state - that is, it reports its integrity state, for example the values inside the registers inside the TPM (Trusted Platform Module) chip.

The idea is that the other party in a two-party transaction has to verify/evaluate that attestation from the first party. This may be done with or without the assistance of a trusted third party - an entity which assists or enables the verification of attestations by the second party but does not actually produce attestations. It is up to the second party whether or not they accept that attestation from the first party.


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