From 296148b4e63b0bf5419e82aeaa5eb273b80d3c42 Mon Sep 17 00:00:00 2001
From: Daniel Pouzzner <douzzer@wolfssl.com>
Date: Tue, 7 Apr 2026 15:39:31 -0500
Subject: [PATCH] wolfcrypt/src/sha3.c: fix Load64Unaligned() implementation
 with unaligned integer access when WC_SHA3_FAULT_HARDEN && !BIG_ENDIAN_ORDER.

---
 wolfcrypt/src/sha3.c | 15 ++-------------
 1 file changed, 2 insertions(+), 13 deletions(-)

diff --git a/wolfcrypt/src/sha3.c b/wolfcrypt/src/sha3.c
index 7c4558313f..7a6faffe56 100644
--- a/wolfcrypt/src/sha3.c
+++ b/wolfcrypt/src/sha3.c
@@ -615,19 +615,8 @@ static word64 Load64BitLittleEndian(const byte* a)
     return n;
 }
 #elif defined(WC_SHA3_FAULT_HARDEN)
-static WC_INLINE word64 Load64Unaligned(const unsigned char *a)
-{
-#ifdef WC_64BIT_CPU
-    return *(word64*)a;
-#elif defined(WC_32BIT_CPU)
-    return (((word64)((word32*)a)[1]) << 32) |
-                     ((word32*)a)[0];
-#else
-    return (((word64)((word16*)a)[3]) << 48) |
-           (((word64)((word16*)a)[2]) << 32) |
-           (((word64)((word16*)a)[1]) << 16) |
-                     ((word16*)a)[0];
-#endif
+static WC_INLINE word64 Load64Unaligned(const unsigned char *a) {
+    return readUnalignedWord64(a);
 }
 
 /* Convert the array of bytes, in little-endian order, to a 64-bit integer.