ncch_container: support encrypted games

src/core/hw/aes/key.cpp

@@ -56,13 +56,6 @@ struct KeySlot {
 
 std::array<KeySlot, KeySlotID::MaxKeySlotID> key_slots;
 
-void ClearAllKeys() {
-    for (KeySlot& slot : key_slots) {
-        slot.Clear();
-    }
-    generator_constant.reset();
-}
-
 AESKey HexToKey(const std::string& hex) {
     if (hex.size() < 32) {
         throw std::invalid_argument("hex string is too short");
@@ -141,8 +134,11 @@ void LoadPresetKeys() {
 } // namespace
 
 void InitKeys() {
-    ClearAllKeys();
+    static bool initialized = false;
+    if (initialized)
+        return;
     LoadPresetKeys();
+    initialized = true;
 }
 
 void SetGeneratorConstant(const AESKey& key) {

src/core/hw/aes/key.h

@@ -12,8 +12,16 @@ namespace HW {
 namespace AES {
 
 enum KeySlotID : size_t {
-    // AES Keyslot used to generate the UDS data frame CCMP key.
+    // AES keyslots used to decrypt NCCH
+    NCCHSecure1 = 0x2C,
+    NCCHSecure2 = 0x25,
+    NCCHSecure3 = 0x18,
+    NCCHSecure4 = 0x1B,
+
+    // AES keyslot used to generate the UDS data frame CCMP key.
     UDSDataKey = 0x2D,
+
+    // AES keyslot used for APT:Wrap/Unwrap functions
     APTWrap = 0x31,
 
     MaxKeySlotID = 0x40,