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A Practical Guide to TPM 2.0: Using the New Trusted Platform Module in the New Age of Security Will Arthur & David Challener by Will Arthur, David Challener, Kenneth Goldman

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CHAPTER 8

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TPM Entities

A TPM 2.0 entity is an item in the TPM that can be directly referenced with a handle. The term encompasses more than objects because the specification uses the word object to identify a very specific subset of entities. This can be confusing, so this chapter briefly describes all of the entity types: permanent entities (hierarchies, the dictionary attack lockout mechanism, and PCRs); nonvolatile entities (NVRAM indexes), which are similar to permanent entities; objects (keys and data); and volatile entities (sessions of various types).

After this introduction, the following chapters discuss each entity and its uses in more ...

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