Re: [RFC 2/7] crypto: Use GHASH digest algorithm in GCM

[Huang Ying]

On Sun, 2009-06-21 at 21:46 +0800, Herbert Xu wrote:
> Huang Ying <ying.huang@xxxxxxxxx> wrote:
> >
> > +       ghash = crypto_alloc_ahash("ghash", 0, 0);
> > +       if (IS_ERR(ghash))
> > +               return PTR_ERR(ghash);
> 
> We should add this as an extra parameter to gcm_base.  This is
> so that the user can select an alternative ghash implementation.

Can crypto_alloc_ahash("ghash",...) select among different ghash
implementation automatically based on priority? I think
crypto_alloc_ablkcipher("cbc(aes)",...) can select among different AES
implementation automatically. They are different?

Best Regards,
Huang Ying


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