> On Jun 7, 2018, at 1:40 PM, Ryan Sleevi via Public <[email protected]> 
> wrote:
> 
> In the pursuit of a definition, we tried to work backwards - what are 
> situations we think are misuse.

The dictionary definition of ‘misuse’ is:

use (something) in the wrong way or for the wrong purpose

> Another suggestion was that it involved scenarios where the Subscriber 
> private key was in an HSM, and itself was not compromised, but had signed 
> things it was not expected to. This wasn't elaborated on further - so I'm 
> uncertain if this meant things other than the TLS handshake transcript - but 
> this is already met by our definition of Key Compromise in 1.6.1, that is:
> ""A Private Key is said to be compromised if its value has been disclosed to 
> an
>    unauthorized person, an unauthorized person has had access to it, or there 
> exists a
>    practical technique by which an unauthorized person may discover its 
> value. “""

If a key is in a HSM and not exportable, then its value is not disclosed, nor 
does an unauthorized person have access *to the key*.  Dictionary definition of 
‘access’ is 'obtain, examine, or retrieve’ none of which apply here.  So it is 
not covered by Key Compromise.

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