Re: Re: [PATCH v3 0/6] Support akcipher for virtio-crypto

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On Wed, Mar 23, 2022 at 03:32:37PM +0800, zhenwei pi wrote:
> 
> On 3/23/22 13:17, Eric Biggers wrote:
> > On Wed, Mar 23, 2022 at 10:49:06AM +0800, zhenwei pi wrote:
> > > v2 -> v3:
> > > - Introduce akcipher types to qapi
> > > - Add test/benchmark suite for akcipher class
> > > - Seperate 'virtio_crypto: Support virtio crypto asym operation' into:
> > >    - crypto: Introduce akcipher crypto class
> > >    - virtio-crypto: Introduce RSA algorithm
> > > 
> > > v1 -> v2:
> > > - Update virtio_crypto.h from v2 version of related kernel patch.
> > > 
> > > v1:
> > > - Support akcipher for virtio-crypto.
> > > - Introduce akcipher class.
> > > - Introduce ASN1 decoder into QEMU.
> > > - Implement RSA backend by nettle/hogweed.
> > > 
> > > Lei He (3):
> > >    crypto-akcipher: Introduce akcipher types to qapi
> > >    crypto: Implement RSA algorithm by hogweed
> > >    tests/crypto: Add test suite for crypto akcipher
> > > 
> > > Zhenwei Pi (3):
> > >    virtio-crypto: header update
> > >    crypto: Introduce akcipher crypto class
> > >    virtio-crypto: Introduce RSA algorithm
> > 
> > You forgot to describe the point of this patchset and what its use case is.
> > Like any other Linux kernel patchset, that needs to be in the cover letter.
> > 
> > - Eric
> Thanks Eric for pointing this missing part.
> 
> This feature provides akcipher service offloading capability. QEMU side
> handles asymmetric requests via virtio-crypto devices from guest side, do
> encrypt/decrypt/sign/verify operations on host side, and return the result
> to guest.
> 
> This patchset implements a RSA backend by hogweed from nettle, it works
> together with guest patch:
> https://lkml.org/lkml/2022/3/1/1425

So what is the use case?

- Eric



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