On Wed, Dec 3, 2014 at 10:12 AM, Andy Polyakov via RT <r...@openssl.org> wrote:
> Oops! Wrong patch! Correct one attached. If you feel like testing the
> wrong one, go ahead, but there are some later non-essential adjustments.
>
> diff --git a/crypto/ec/ecp_nistz256.c b/crypto/ec/ecp_nistz256.c
> index bf3fcc6..33b07ce 100644
> --- a/crypto/ec/ecp_nistz256.c
> +++ b/crypto/ec/ecp_nistz256.c
> @@ -637,7 +637,7 @@ static void ecp_nistz256_windowed_mul(const EC_GROUP * 
> group,
>          ecp_nistz256_point_double(&row[10 - 1], &row[ 5 - 1]);
>          ecp_nistz256_point_add   (&row[15 - 1], &row[14 - 1], &row[1 - 1]);
>          ecp_nistz256_point_add   (&row[11 - 1], &row[10 - 1], &row[1 - 1]);
> -        ecp_nistz256_point_add   (&row[16 - 1], &row[15 - 1], &row[1 - 1]);
> +        ecp_nistz256_point_double(&row[16 - 1], &row[ 8 - 1]);
>      }
>
>      index = 255;

I can believe that this fixes the issue, but it's just masking it, no?
I'll see if I can track it down more precisely tomorrow.


Cheers

AGL


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