From 1d03522625f46214733e8e143a4765c01fc146f9 Mon Sep 17 00:00:00 2001
From: Steffen Jaeckel <s@jaeckel.eu>
Date: Tue, 29 Aug 2017 16:53:31 +0200
Subject: [PATCH] make sure fast_s_mp_mul_digs() doesn't BOF

This fixes #60 and #80
---
 bn_fast_s_mp_mul_digs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/bn_fast_s_mp_mul_digs.c b/bn_fast_s_mp_mul_digs.c
index 558d151..875798e 100644
--- a/bn_fast_s_mp_mul_digs.c
+++ b/bn_fast_s_mp_mul_digs.c
@@ -87,7 +87,7 @@ int fast_s_mp_mul_digs(const mp_int *a, const mp_int *b, mp_int *c, int digs)
    {
       mp_digit *tmpc;
       tmpc = c->dp;
-      for (ix = 0; ix < (pa + 1); ix++) {
+      for (ix = 0; ix < pa; ix++) {
          /* now extract the previous digit [below the carry] */
          *tmpc++ = W[ix];
       }