[PATCH] Truncate hash values for ECDSA signature scheme

[Werner Koch]

On Mon, 16 Dec 2013 17:34, dbaryshkov at gmail.com said:

> @@ -164,6 +173,7 @@ _gcry_ecc_ecdsa_verify (gcry_mpi_t input, ECC_public_key *pkey,

> +  if (abits > nbits)
> +    {
> +      mpi_rshift (h1, input, abits - nbits);
> +      mpi_mulm (h1, h1, h, pkey->E.n);
> +    }
> +  else
> +    mpi_mulm (h1, input, h, pkey->E.n);

Either move this to ecc.c:ecc_verify or move the opaque code handling
used there to here.


Shalom-Salam,

   Werner

-- 
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