From 302f4e67bfc07b0a2ef193a77fa42a76f62c630b Mon Sep 17 00:00:00 2001
From: Gorachya <38173958+Gorachya@users.noreply.github.com>
Date: Wed, 11 May 2022 14:49:06 +0800
Subject: [PATCH] Add files via upload

---
 src/sm9_alg.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/sm9_alg.c b/src/sm9_alg.c
index 46ff9a8a..02fef94f 100644
--- a/src/sm9_alg.c
+++ b/src/sm9_alg.c
@@ -1078,7 +1078,7 @@ void sm9_fp12_pow(sm9_fp12_t r, const sm9_fp12_t a, const sm9_bn_t k)
 
 	sm9_bn_to_bits(k, kbits);
 	sm9_fp12_set_one(t);
-	for (i = 1; i < 256; i++) {
+	for (i = 0; i < 256; i++) {
 		sm9_fp12_sqr(t, t);
 		if (kbits[i] == '1') {
 			sm9_fp12_mul(t, t, a);
@@ -1246,7 +1246,7 @@ void sm9_point_from_hex(sm9_point_t *R, const char hex[65 * 2])
 }
 
 int sm9_point_is_at_infinity(const sm9_point_t *P) {
-	return sm9_fp_is_zero(P->X);
+	return sm9_fp_is_zero(P->Z);
 }
 
 void sm9_point_set_infinity(sm9_point_t *R) {
@@ -1419,6 +1419,7 @@ void sm9_point_mul(sm9_point_t *R, const sm9_bn_t k, const sm9_point_t *P)
 	int i;
 
 	sm9_bn_to_bits(k, kbits);
+	sm9_point_set_infinity(Q);
 	for (i = 0; i < 256; i++) {
 		sm9_point_dbl(Q, Q);
 		if (kbits[i] == '1') {