From 7115c30f76182679c53375bd6c6717c2179943a7 Mon Sep 17 00:00:00 2001
From: Pengfei <zhupf321@gmail.com>
Date: Sat, 31 Jul 2021 17:23:33 +0800
Subject: [PATCH] Fix TMD signature validation

---
 src/core/ncch/title_metadata.cpp | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/src/core/ncch/title_metadata.cpp b/src/core/ncch/title_metadata.cpp
index 552b6b5..2fc8cd0 100644
--- a/src/core/ncch/title_metadata.cpp
+++ b/src/core/ncch/title_metadata.cpp
@@ -142,9 +142,8 @@ bool TitleMetadata::ValidateSignature() const {
     const auto issuer =
         Common::StringFromFixedZeroTerminatedBuffer(tmd_body.issuer.data(), tmd_body.issuer.size());
     return signature.Verify(issuer, [this](auto* message) {
-        message->Update(reinterpret_cast<const u8*>(&tmd_body), sizeof(tmd_body));
-        message->Update(reinterpret_cast<const u8*>(tmd_chunks.data()),
-                        tmd_chunks.size() * sizeof(ContentChunk));
+        static_assert(offsetof(Body, contentinfo) == 0xC4, "Signed data length is not correct");
+        message->Update(reinterpret_cast<const u8*>(&tmd_body), offsetof(Body, contentinfo));
     });
 }