From 174d070a1a51cd9d3956f5a1a7e6f83c7d9d1b68 Mon Sep 17 00:00:00 2001
From: Dmitry Belyavskiy <beldmit@gmail.com>
Date: Fri, 17 Nov 2023 16:36:18 +0100
Subject: [PATCH] Big-Endian platforms magma-mgm fix

---
 gost_gost2015.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/gost_gost2015.c b/gost_gost2015.c
index 7d207d0..8989ab1 100644
--- a/gost_gost2015.c
+++ b/gost_gost2015.c
@@ -465,8 +465,11 @@ int gost_mgm128_finish(mgm128_context *ctx, const unsigned char *tag,
         ctx->len.u[0] = alen;
         ctx->len.u[1] = clen;
     } else {
-        // TODO: check for big-endian
+#ifdef L_ENDIAN
         ctx->len.u[0] = (alen >> 32) | clen;
+#else
+        ctx->len.u[0] = (alen << 32) | clen;
+#endif
         ctx->len.u[1] = 0;
     }
 
-- 
2.39.5