Messages in this thread | | | From | David Howells <> | Subject | Re: [PATCH RFC v2 1/2] crypto: add PKE API | Date | Wed, 13 May 2015 16:03:55 +0100 |
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Herbert Xu <herbert@gondor.apana.org.au> wrote:
> > What if the fallback doesn't exist? For instance, a H/W contained key is > > specifically limited to, say, just sign/verify and the not permitted to be > > used for encrypt/decrypt. How do you provide a fallback given you can't get > > at the key? > > That's a transform with a specific key. I don't see why such a > piece of hardware would even need to be exposed through the crypto > API which is about generic implementations that can take any > arbitrary key.
So what if we want to use a key that's stored in a TPM? I presume then we can't use the crypto interface, but must rather use the *key* as the primary interface somehow.
David
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