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Intro: Describe how authValues are proved

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Nicolas Williams 2021-08-26 10:41:50 -05:00
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Intro/README.md
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@ -856,6 +856,15 @@ session.
> sessions as inputs to any TPM command (some TPM commands have no input > sessions as inputs to any TPM command (some TPM commands have no input
> handle parameters, some have one, and some have two). > handle parameters, some have one, and some have two).
### Proving Knowledge of a Shared `authValue`
Each session used in a command can prove the caller's (and TPM's)
knowledge of the session's `bind` object's `authValue`. As well, the
`TPM2_PolicySecret()` command can be used to inject the `authValue` of
arbitrary objects into the session's state computations, once again
having the caller prove its knowledge of the `authValue`, and the TPM
will prove its knowledge of it back to the caller on its response.
## Restricted Cryptographic Keys ## Restricted Cryptographic Keys
Cryptographic keys can either be unrestricted or restricted. Cryptographic keys can either be unrestricted or restricted.