Fix corner case.

relic-toolkit · Oct 9, 2024 · f12f285 · f12f285
1 parent ac2aac6
commit f12f285
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/bn/relic_bn_inv.c b/src/bn/relic_bn_inv.c
@@ -46,8 +46,9 @@ void bn_mod_inv(bn_t c, const bn_t a, const bn_t b) {
 		bn_new(t);
 		bn_new(u);
 
+		bn_mod(t, a, b);
 		bn_copy(u, b);
-		bn_gcd_ext(t, c, NULL, a, b);
+		bn_gcd_ext(t, c, NULL, t, b);
 
 		if (bn_sign(c) == RLC_NEG) {
 			bn_add(c, c, u);