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Re: [Qemu-devel] [PATCH v4 04/26] crypto: add support for anti-forensic
From: |
Eric Blake |
Subject: |
Re: [Qemu-devel] [PATCH v4 04/26] crypto: add support for anti-forensic split algorithm |
Date: |
Wed, 2 Mar 2016 17:41:48 -0700 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0 |
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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- Re: [Qemu-devel] [PATCH v4 04/26] crypto: add support for anti-forensic split algorithm,
Eric Blake <=