From ec7c05f94ea4c7a7e1e4eb79a9eddcc6d7f6be17 Mon Sep 17 00:00:00 2001
From: Karel Miko <karel.miko@gmail.com>
Date: Mon, 25 May 2026 14:00:31 +0200
Subject: [PATCH] fix issue #764 as suggested by @yaotushaozhu

---
 src/pk/ecc/ltc_ecc_verify_key.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/pk/ecc/ltc_ecc_verify_key.c b/src/pk/ecc/ltc_ecc_verify_key.c
index 7c83d6a8..d196a1df 100644
--- a/src/pk/ecc/ltc_ecc_verify_key.c
+++ b/src/pk/ecc/ltc_ecc_verify_key.c
@@ -40,10 +40,10 @@ int ltc_ecc_verify_key(const ecc_key *key)
 
    /* Test 3: does nG = O? (n = order, O = point at infinity, G = public key) */
    point = ltc_ecc_new_point();
-   if ((err = ltc_ecc_mulmod(order, &(key->pubkey), point, a, prime, 1)) != CRYPT_OK)     { goto done1; }
+   if ((err = ltc_ecc_mulmod(order, &(key->pubkey), point, a, prime, 0)) != CRYPT_OK)     { goto done1; }
 
    err = ltc_ecc_is_point_at_infinity(point, prime, &inf);
-   if (err != CRYPT_OK || inf) {
+   if (err != CRYPT_OK || !inf) {
       err = CRYPT_ERROR;
    }
    else {