IOSC: Add entry for the root key handle

It contains a RSA4096 public key used to validate all other
Nintendo certificates.

Source/Core/Core/IOS/IOSC.cpp

@@ -192,6 +192,43 @@ ReturnCode IOSC::SetOwnership(Handle handle, u32 new_owner, u32 pid)
   return IPC_SUCCESS;
 }
 
+constexpr std::array<u8, 512> ROOT_PUBLIC_KEY = {
+    {0xF8, 0x24, 0x6C, 0x58, 0xBA, 0xE7, 0x50, 0x03, 0x01, 0xFB, 0xB7, 0xC2, 0xEB, 0xE0, 0x01,
+     0x05, 0x71, 0xDA, 0x92, 0x23, 0x78, 0xF0, 0x51, 0x4E, 0xC0, 0x03, 0x1D, 0xD0, 0xD2, 0x1E,
+     0xD3, 0xD0, 0x7E, 0xFC, 0x85, 0x20, 0x69, 0xB5, 0xDE, 0x9B, 0xB9, 0x51, 0xA8, 0xBC, 0x90,
+     0xA2, 0x44, 0x92, 0x6D, 0x37, 0x92, 0x95, 0xAE, 0x94, 0x36, 0xAA, 0xA6, 0xA3, 0x02, 0x51,
+     0x0C, 0x7B, 0x1D, 0xED, 0xD5, 0xFB, 0x20, 0x86, 0x9D, 0x7F, 0x30, 0x16, 0xF6, 0xBE, 0x65,
+     0xD3, 0x83, 0xA1, 0x6D, 0xB3, 0x32, 0x1B, 0x95, 0x35, 0x18, 0x90, 0xB1, 0x70, 0x02, 0x93,
+     0x7E, 0xE1, 0x93, 0xF5, 0x7E, 0x99, 0xA2, 0x47, 0x4E, 0x9D, 0x38, 0x24, 0xC7, 0xAE, 0xE3,
+     0x85, 0x41, 0xF5, 0x67, 0xE7, 0x51, 0x8C, 0x7A, 0x0E, 0x38, 0xE7, 0xEB, 0xAF, 0x41, 0x19,
+     0x1B, 0xCF, 0xF1, 0x7B, 0x42, 0xA6, 0xB4, 0xED, 0xE6, 0xCE, 0x8D, 0xE7, 0x31, 0x8F, 0x7F,
+     0x52, 0x04, 0xB3, 0x99, 0x0E, 0x22, 0x67, 0x45, 0xAF, 0xD4, 0x85, 0xB2, 0x44, 0x93, 0x00,
+     0x8B, 0x08, 0xC7, 0xF6, 0xB7, 0xE5, 0x6B, 0x02, 0xB3, 0xE8, 0xFE, 0x0C, 0x9D, 0x85, 0x9C,
+     0xB8, 0xB6, 0x82, 0x23, 0xB8, 0xAB, 0x27, 0xEE, 0x5F, 0x65, 0x38, 0x07, 0x8B, 0x2D, 0xB9,
+     0x1E, 0x2A, 0x15, 0x3E, 0x85, 0x81, 0x80, 0x72, 0xA2, 0x3B, 0x6D, 0xD9, 0x32, 0x81, 0x05,
+     0x4F, 0x6F, 0xB0, 0xF6, 0xF5, 0xAD, 0x28, 0x3E, 0xCA, 0x0B, 0x7A, 0xF3, 0x54, 0x55, 0xE0,
+     0x3D, 0xA7, 0xB6, 0x83, 0x26, 0xF3, 0xEC, 0x83, 0x4A, 0xF3, 0x14, 0x04, 0x8A, 0xC6, 0xDF,
+     0x20, 0xD2, 0x85, 0x08, 0x67, 0x3C, 0xAB, 0x62, 0xA2, 0xC7, 0xBC, 0x13, 0x1A, 0x53, 0x3E,
+     0x0B, 0x66, 0x80, 0x6B, 0x1C, 0x30, 0x66, 0x4B, 0x37, 0x23, 0x31, 0xBD, 0xC4, 0xB0, 0xCA,
+     0xD8, 0xD1, 0x1E, 0xE7, 0xBB, 0xD9, 0x28, 0x55, 0x48, 0xAA, 0xEC, 0x1F, 0x66, 0xE8, 0x21,
+     0xB3, 0xC8, 0xA0, 0x47, 0x69, 0x00, 0xC5, 0xE6, 0x88, 0xE8, 0x0C, 0xCE, 0x3C, 0x61, 0xD6,
+     0x9C, 0xBB, 0xA1, 0x37, 0xC6, 0x60, 0x4F, 0x7A, 0x72, 0xDD, 0x8C, 0x7B, 0x3E, 0x3D, 0x51,
+     0x29, 0x0D, 0xAA, 0x6A, 0x59, 0x7B, 0x08, 0x1F, 0x9D, 0x36, 0x33, 0xA3, 0x46, 0x7A, 0x35,
+     0x61, 0x09, 0xAC, 0xA7, 0xDD, 0x7D, 0x2E, 0x2F, 0xB2, 0xC1, 0xAE, 0xB8, 0xE2, 0x0F, 0x48,
+     0x92, 0xD8, 0xB9, 0xF8, 0xB4, 0x6F, 0x4E, 0x3C, 0x11, 0xF4, 0xF4, 0x7D, 0x8B, 0x75, 0x7D,
+     0xFE, 0xFE, 0xA3, 0x89, 0x9C, 0x33, 0x59, 0x5C, 0x5E, 0xFD, 0xEB, 0xCB, 0xAB, 0xE8, 0x41,
+     0x3E, 0x3A, 0x9A, 0x80, 0x3C, 0x69, 0x35, 0x6E, 0xB2, 0xB2, 0xAD, 0x5C, 0xC4, 0xC8, 0x58,
+     0x45, 0x5E, 0xF5, 0xF7, 0xB3, 0x06, 0x44, 0xB4, 0x7C, 0x64, 0x06, 0x8C, 0xDF, 0x80, 0x9F,
+     0x76, 0x02, 0x5A, 0x2D, 0xB4, 0x46, 0xE0, 0x3D, 0x7C, 0xF6, 0x2F, 0x34, 0xE7, 0x02, 0x45,
+     0x7B, 0x02, 0xA4, 0xCF, 0x5D, 0x9D, 0xD5, 0x3C, 0xA5, 0x3A, 0x7C, 0xA6, 0x29, 0x78, 0x8C,
+     0x67, 0xCA, 0x08, 0xBF, 0xEC, 0xCA, 0x43, 0xA9, 0x57, 0xAD, 0x16, 0xC9, 0x4E, 0x1C, 0xD8,
+     0x75, 0xCA, 0x10, 0x7D, 0xCE, 0x7E, 0x01, 0x18, 0xF0, 0xDF, 0x6B, 0xFE, 0xE5, 0x1D, 0xDB,
+     0xD9, 0x91, 0xC2, 0x6E, 0x60, 0xCD, 0x48, 0x58, 0xAA, 0x59, 0x2C, 0x82, 0x00, 0x75, 0xF2,
+     0x9F, 0x52, 0x6C, 0x91, 0x7C, 0x6F, 0xE5, 0x40, 0x3E, 0xA7, 0xD4, 0xA5, 0x0C, 0xEC, 0x3B,
+     0x73, 0x84, 0xDE, 0x88, 0x6E, 0x82, 0xD2, 0xEB, 0x4D, 0x4E, 0x42, 0xB5, 0xF2, 0xB1, 0x49,
+     0xA8, 0x1E, 0xA7, 0xCE, 0x71, 0x44, 0xDC, 0x29, 0x94, 0xCF, 0xC4, 0x4E, 0x1F, 0x91, 0xCB,
+     0xD4, 0x95}};
+
 void IOSC::LoadDefaultEntries(ConsoleType console_type)
 {
   // TODO: add support for loading and writing to a BootMii / SEEPROM and OTP dump.
@@ -247,6 +284,11 @@ void IOSC::LoadDefaultEntries(ConsoleType console_type)
                                           {{0x63, 0xb8, 0x2b, 0xb4, 0xf4, 0x61, 0x4e, 0x2e, 0x13,
                                             0xf2, 0xfe, 0xfb, 0xba, 0x4c, 0x9b, 0x7e}},
                                           3};
+
+  std::array<u8, 4> root_exponent = {{0x0, 0x1, 0x0, 0x1}};
+  m_root_key_entry = {TYPE_PUBLIC_KEY, SUBTYPE_RSA4096,
+                      std::vector<u8>(ROOT_PUBLIC_KEY.begin(), ROOT_PUBLIC_KEY.end()),
+                      std::move(root_exponent), 0};
 }
 
 IOSC::KeyEntry::KeyEntry() = default;
@@ -274,8 +316,10 @@ IOSC::KeyEntry* IOSC::FindEntry(Handle handle)
 {
   return handle < m_key_entries.size() ? &m_key_entries[handle] : nullptr;
 }
-const IOSC::KeyEntry* IOSC::FindEntry(Handle handle) const
+const IOSC::KeyEntry* IOSC::FindEntry(Handle handle, SearchMode mode) const
 {
+  if (mode == SearchMode::IncludeRootKey && handle == HANDLE_ROOT_KEY)
+    return &m_root_key_entry;
   return handle < m_key_entries.size() ? &m_key_entries[handle] : nullptr;
 }
 
@@ -288,13 +332,14 @@ IOSC::Handle IOSC::GetHandleFromIterator(IOSC::KeyEntries::iterator iterator) co
 bool IOSC::HasOwnership(Handle handle, u32 pid) const
 {
   u32 owner_mask;
-  return GetOwnership(handle, &owner_mask) == IPC_SUCCESS && ((1 << pid) & owner_mask) != 0;
+  return handle == HANDLE_ROOT_KEY ||
+         (GetOwnership(handle, &owner_mask) == IPC_SUCCESS && ((1 << pid) & owner_mask) != 0);
 }
 
 bool IOSC::IsDefaultHandle(Handle handle) const
 {
   constexpr Handle last_default_handle = HANDLE_NEW_COMMON_KEY;
-  return handle <= last_default_handle;
+  return handle <= last_default_handle || handle == HANDLE_ROOT_KEY;
 }
 
 void IOSC::DoState(PointerWrap& p)

Source/Core/Core/IOS/IOSC.h

@@ -140,6 +140,8 @@ public:
     HANDLE_FS_VERSION = 10,
     // New common key (aka Korean common key)
     HANDLE_NEW_COMMON_KEY = 11,
+
+    HANDLE_ROOT_KEY = 0xfffffff,
   };
 
   enum ObjectType : u8
@@ -153,6 +155,7 @@ public:
   {
     SUBTYPE_AES128 = 0,
     SUBTYPE_MAC = 1,
+    SUBTYPE_RSA4096 = 3,
     SUBTYPE_ECC233 = 4,
     SUBTYPE_DATA = 5,
     SUBTYPE_VERSION = 6
@@ -205,11 +208,17 @@ private:
   // The Wii's IOSC is limited to 32 entries, including 12 built-in entries.
   using KeyEntries = std::array<KeyEntry, 32>;
 
+  enum class SearchMode
+  {
+    IncludeRootKey,
+    ExcludeRootKey,
+  };
+
   void LoadDefaultEntries(ConsoleType console_type);
 
   KeyEntries::iterator FindFreeEntry();
   KeyEntry* FindEntry(Handle handle);
-  const KeyEntry* FindEntry(Handle handle) const;
+  const KeyEntry* FindEntry(Handle handle, SearchMode mode = SearchMode::ExcludeRootKey) const;
 
   Handle GetHandleFromIterator(KeyEntries::iterator iterator) const;
   bool HasOwnership(Handle handle, u32 pid) const;
@@ -218,6 +227,7 @@ private:
                             size_t size, u8* output, u32 pid) const;
 
   KeyEntries m_key_entries;
+  KeyEntry m_root_key_entry;
 };
 }  // namespace HLE
 }  // namespace IOS