From e8dda804de2e5c87a8a95dc9e7c0bb0cbff32df5 Mon Sep 17 00:00:00 2001 From: Jeffrey Walton Date: Tue, 13 Dec 2016 20:31:28 -0500 Subject: [PATCH] Switch ECGDSA equation to slightly speed-up signing --- gfpcrypt.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/gfpcrypt.h b/gfpcrypt.h index 0d3c8393..f21363f5 100644 --- a/gfpcrypt.h +++ b/gfpcrypt.h @@ -412,7 +412,7 @@ public: // r = x(k * G) mod q r = params.ConvertElementToInteger(params.ExponentiateBase(k)) % q; // s = (k * r − h(m)) * d_A mod q - s = a_times_b_mod_c(k * r - e, x, q); + s = (k * r - e) * x % q; CRYPTOPP_ASSERT(!!r && !!s); }