From 1b3a8f40b80c79682ec09951a5d390c1a852c6fe Mon Sep 17 00:00:00 2001
From: Jacob Barthelmeh <jacob@wolfssl.com>
Date: Tue, 12 Sep 2017 14:57:44 -0600
Subject: [PATCH] account for 8k keys with MySQL compatibility

---
 wolfcrypt/src/integer.c     | 2 +-
 wolfssl/wolfcrypt/integer.h | 8 ++++++++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/wolfcrypt/src/integer.c b/wolfcrypt/src/integer.c
index 785493c75..3c948917e 100644
--- a/wolfcrypt/src/integer.c
+++ b/wolfcrypt/src/integer.c
@@ -1043,7 +1043,7 @@ top:
 
   /* if not zero goto step 4 */
   if (mp_iszero (&u) == MP_NO) {
-    if (++loop_check > 4096) {
+    if (++loop_check > MAX_INVMOD_SZ) {
         res = MP_VAL;
         goto LBL_ERR;
     }
diff --git a/wolfssl/wolfcrypt/integer.h b/wolfssl/wolfcrypt/integer.h
index 9c7bc01b0..de78b55bf 100644
--- a/wolfssl/wolfcrypt/integer.h
+++ b/wolfssl/wolfcrypt/integer.h
@@ -230,6 +230,14 @@ typedef int ltm_prime_callback(unsigned char *dst, int len, void *dat);
    #define PRIME_SIZE      256
 #endif
 
+#ifndef MAX_INVMOD_SZ
+    #if defined(WOLFSSL_MYSQL_COMPATIBLE)
+        #define MAX_INVMOD_SZ 8192
+    #else
+        #define MAX_INVMOD_SZ 4096
+    #endif
+#endif
+
 #define mp_prime_random(a, t, size, bbs, cb, dat) \
    mp_prime_random_ex(a, t, ((size) * 8) + 1, (bbs==1)?LTM_PRIME_BBS:0, cb, dat)