core/ncch: Add ticket

Added structure and fake ticket building (from GodMode9)

src/core/CMakeLists.txt

@@ -17,6 +17,8 @@ add_library(core STATIC
   ncch/seed_db.h
   ncch/smdh.cpp
   ncch/smdh.h
+  ncch/ticket.cpp
+  ncch/ticket.h
   ncch/title_metadata.cpp
   ncch/title_metadata.h
   quick_decryptor.cpp

src/core/ncch/ticket.cpp

@@ -0,0 +1,39 @@
+// Copyright 2020 Pengfei Zhu
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <cstring>
+#include <string_view>
+#include "core/ncch/ticket.h"
+
+namespace Core {
+
+constexpr std::string_view TicketIssuer = "Root-CA00000003-XS0000000c";
+
+// TODO: Make use of this?
+constexpr std::string_view TicketIssuerDev = "Root-CA00000004-XS00000009";
+
+// From GodMode9
+constexpr std::array<u8, 44> TicketContentIndex{
+    {0x00, 0x01, 0x00, 0x14, 0x00, 0x00, 0x00, 0xAC, 0x00, 0x00, 0x00, 0x14, 0x00, 0x01, 0x00,
+     0x14, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x28, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00,
+     0x00, 0x84, 0x00, 0x00, 0x00, 0x84, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}};
+
+// Values taken from GodMode9
+Ticket BuildFakeTicket(u64 title_id) {
+    Ticket ticket{};
+    ticket.signature_type = 0x10004; // RSA_2048 SHA256
+    std::memset(ticket.signature.data(), 0xFF, ticket.signature.size());
+    std::memcpy(ticket.issuer.data(), TicketIssuer.data(), TicketIssuer.size());
+    std::memset(ticket.ecc_public_key.data(), 0xFF, ticket.ecc_public_key.size());
+    ticket.version = 0x01;
+    std::memset(ticket.title_key.data(), 0xFF, ticket.title_key.size());
+    ticket.title_id = title_id;
+    ticket.common_key_index = 0x00;
+    ticket.audit = 0x01;
+    std::memset(ticket.content_index.data(), 0xFF, ticket.content_index.size());
+    std::memcpy(ticket.content_index.data(), TicketContentIndex.data(), TicketContentIndex.size());
+    return ticket;
+}
+
+} // namespace Core

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