core/ncch: Add ticket

Added structure and fake ticket building (from GodMode9)

src/core/ncch/ticket.h

@@ -0,0 +1,52 @@
+// Copyright 2018 Citra Emulator Project / 2020 Pengfei Zhu
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <array>
+#include <vector>
+#include "common/common_funcs.h"
+#include "common/common_types.h"
+#include "common/swap.h"
+
+namespace Core {
+
+/**
+ * Structure of the ticket.
+ * The ticket we are using is RSA_2048 SHA256.
+ */
+#pragma pack(push, 1)
+struct Ticket {
+    u32_be signature_type;
+    std::array<u8, 0x100> signature;
+    INSERT_PADDING_BYTES(0x3C);
+    std::array<u8, 0x40> issuer;
+    std::array<u8, 0x3C> ecc_public_key;
+    u8 version;
+    u8 ca_crl_version;
+    u8 signer_crl_version;
+    std::array<u8, 0x10> title_key;
+    INSERT_PADDING_BYTES(1);
+    u64_be ticket_id;
+    u32_be console_id;
+    u64_be title_id;
+    INSERT_PADDING_BYTES(2);
+    u16_be ticket_title_version;
+    INSERT_PADDING_BYTES(8);
+    u8 license_type;
+    u8 common_key_index;
+    INSERT_PADDING_BYTES(0x2A);
+    u32_be eshop_account_id;
+    INSERT_PADDING_BYTES(1);
+    u8 audit;
+    INSERT_PADDING_BYTES(0x42);
+    std::array<u8, 0x40> limits;
+    std::array<u8, 0xAC> content_index;
+};
+static_assert(sizeof(Ticket) == 0x350, "Ticket size is wrong");
+#pragma pack(pop)
+
+Ticket BuildFakeTicket(u64 title_id);
+
+} // namespace Core