Account for sp_sqr failure in _sp_exptmod_nct

ZD 12039
2021-04-06 01:34:09 +02:00
parent 6b46669641
commit 52e6ff7c56
1 changed files with 1 additions and 1 deletions
--- a/wolfcrypt/src/sp_int.c
+++ b/wolfcrypt/src/sp_int.c
@@ -8874,7 +8874,7 @@ static int _sp_exptmod_nct(sp_int* b, sp_int* e, sp_int* m, sp_int* r)
                /* Sqaure until we find bit that is 1 or there's less than a
                 * window of bits left.
                 */
-                while ((i >= 0) || (c >= winBits)) {
+                while (err == MP_OKAY && ((i >= 0) || (c >= winBits))) {
                    sp_digit n2 = n;
                    int c2 = c;
                    int i2 = i;