From d82d8a53ef1a1758c60ae97b8a4fc2bb027cce68 Mon Sep 17 00:00:00 2001
From: Juliusz Sosinowicz <juliusz@wolfssl.com>
Date: Tue, 6 May 2025 13:47:54 +0200
Subject: [PATCH] wc_HKDF_Expand_ex: correctly advance the index

---
 wolfcrypt/src/hmac.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/wolfcrypt/src/hmac.c b/wolfcrypt/src/hmac.c
index 912b26dc1..c6a214edb 100644
--- a/wolfcrypt/src/hmac.c
+++ b/wolfcrypt/src/hmac.c
@@ -1581,7 +1581,7 @@ int wolfSSL_GetHmacMaxSize(void)
             left = min(left, hashSz);
             XMEMCPY(out+outIdx, tmp, left);
 
-            outIdx += hashSz;
+            outIdx += left;
             n++;
         }