Re: [Qemu-devel] [PATCH v4 04/26] crypto: add support for anti-forensic split algorithm

[Eric Blake]

On 02/29/2016 05:00 AM, Daniel P. Berrange wrote:
> The LUKS format specifies an anti-forensic split algorithm which
> is used to artificially expand the size of the key material on
> disk. This is an implementation of that algorithm.
> 
> Signed-off-by: Daniel P. Berrange <address@hidden>
> ---
> +static void qcrypto_afsplit_xor(size_t blocklen,
> +                                const uint8_t *in1,
> +                                const uint8_t *in2,
> +                                uint8_t *out)
> +{
> +    size_t i;
> +    for (i = 0; i < blocklen; i++) {
> +        out[i] = in1[i] ^ in2[i];
> +    }
> +}

I hope the compiler can optimize this into vectored operation.  But no
need to change your code.

Reviewed-by: Eric Blake <address@hidden>

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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