1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
|
// Copyright 2018 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <array>
#include <map>
#include <string>
#include <boost/container/flat_map.hpp>
#include <boost/optional.hpp>
#include <fmt/format.h>
#include "common/common_types.h"
#include "core/file_sys/vfs_types.h"
#include "partition_data_manager.h"
namespace FileUtil {
class IOFile;
}
namespace Loader {
enum class ResultStatus : u16;
}
namespace Core::Crypto {
constexpr u64 TICKET_FILE_TITLEKEY_OFFSET = 0x180;
using Key128 = std::array<u8, 0x10>;
using Key256 = std::array<u8, 0x20>;
using SHA256Hash = std::array<u8, 0x20>;
using TicketRaw = std::array<u8, 0x400>;
static_assert(sizeof(Key128) == 16, "Key128 must be 128 bytes big.");
static_assert(sizeof(Key256) == 32, "Key256 must be 256 bytes big.");
template <size_t bit_size, size_t byte_size = (bit_size >> 3)>
struct RSAKeyPair {
std::array<u8, byte_size> encryption_key;
std::array<u8, byte_size> decryption_key;
std::array<u8, byte_size> modulus;
std::array<u8, 4> exponent;
};
enum class KeyCategory : u8 {
Standard,
Title,
Console,
};
enum class S256KeyType : u64 {
SDKey, // f1=SDKeyType
Header, //
SDKeySource, // f1=SDKeyType
HeaderSource, //
};
enum class S128KeyType : u64 {
Master, // f1=crypto revision
Package1, // f1=crypto revision
Package2, // f1=crypto revision
Titlekek, // f1=crypto revision
ETicketRSAKek, //
KeyArea, // f1=crypto revision f2=type {app, ocean, system}
SDSeed, //
Titlekey, // f1=rights id LSB f2=rights id MSB
Source, // f1=source type, f2= sub id
Keyblob, // f1=crypto revision
KeyblobMAC, // f1=crypto revision
TSEC, //
SecureBoot, //
BIS, // f1=partition (0-3), f2=type {crypt, tweak}
HeaderKek, //
SDKek, //
RSAKek, //
};
enum class KeyAreaKeyType : u8 {
Application,
Ocean,
System,
};
enum class SourceKeyType : u8 {
SDKek, //
AESKekGeneration, //
AESKeyGeneration, //
RSAOaepKekGeneration, //
Master, //
Keyblob, // f2=crypto revision
KeyAreaKey, // f2=KeyAreaKeyType
Titlekek, //
Package2, //
HeaderKek, //
KeyblobMAC, //
ETicketKek, //
ETicketKekek, //
};
enum class SDKeyType : u8 {
Save,
NCA,
};
enum class BISKeyType : u8 {
Crypto,
Tweak,
};
enum class RSAKekType : u8 {
Mask0,
Seed3,
};
template <typename KeyType>
struct KeyIndex {
KeyType type;
u64 field1;
u64 field2;
std::string DebugInfo() const {
u8 key_size = 16;
if constexpr (std::is_same_v<KeyType, S256KeyType>)
key_size = 32;
return fmt::format("key_size={:02X}, key={:02X}, field1={:016X}, field2={:016X}", key_size,
static_cast<u8>(type), field1, field2);
}
};
// boost flat_map requires operator< for O(log(n)) lookups.
template <typename KeyType>
bool operator<(const KeyIndex<KeyType>& lhs, const KeyIndex<KeyType>& rhs) {
return std::tie(lhs.type, lhs.field1, lhs.field2) < std::tie(rhs.type, rhs.field1, rhs.field2);
}
class KeyManager {
public:
KeyManager();
bool HasKey(S128KeyType id, u64 field1 = 0, u64 field2 = 0) const;
bool HasKey(S256KeyType id, u64 field1 = 0, u64 field2 = 0) const;
Key128 GetKey(S128KeyType id, u64 field1 = 0, u64 field2 = 0) const;
Key256 GetKey(S256KeyType id, u64 field1 = 0, u64 field2 = 0) const;
Key256 GetBISKey(u8 partition_id) const;
void SetKey(S128KeyType id, Key128 key, u64 field1 = 0, u64 field2 = 0);
void SetKey(S256KeyType id, Key256 key, u64 field1 = 0, u64 field2 = 0);
static bool KeyFileExists(bool title);
// Call before using the sd seed to attempt to derive it if it dosen't exist. Needs system save
// 8*43 and the private file to exist.
void DeriveSDSeedLazy();
bool BaseDeriveNecessary();
void DeriveBase();
void DeriveETicket(PartitionDataManager data);
private:
std::map<KeyIndex<S128KeyType>, Key128> s128_keys;
std::map<KeyIndex<S256KeyType>, Key256> s256_keys;
std::array<std::array<u8, 0xB0>, 0x20> encrypted_keyblobs{};
std::array<std::array<u8, 0x90>, 0x20> keyblobs{};
bool dev_mode;
void LoadFromFile(const std::string& filename, bool is_title_keys);
void AttemptLoadKeyFile(const std::string& dir1, const std::string& dir2,
const std::string& filename, bool title);
template <size_t Size>
void WriteKeyToFile(KeyCategory category, std::string_view keyname,
const std::array<u8, Size>& key);
void SetKeyWrapped(S128KeyType id, Key128 key, u64 field1 = 0, u64 field2 = 0);
void SetKeyWrapped(S256KeyType id, Key256 key, u64 field1 = 0, u64 field2 = 0);
static const boost::container::flat_map<std::string, KeyIndex<S128KeyType>> s128_file_id;
static const boost::container::flat_map<std::string, KeyIndex<S256KeyType>> s256_file_id;
};
Key128 GenerateKeyEncryptionKey(Key128 source, Key128 master, Key128 kek_seed, Key128 key_seed);
Key128 DeriveKeyblobKey(Key128 sbk, Key128 tsec, Key128 source);
boost::optional<Key128> DeriveSDSeed();
Loader::ResultStatus DeriveSDKeys(std::array<Key256, 2>& sd_keys, KeyManager& keys);
std::vector<TicketRaw> GetTicketblob(const FileUtil::IOFile& ticket_save);
// Returns a pair of {rights_id, titlekey}. Fails if the ticket has no certificate authority (offset
// 0x140-0x144 is zero)
boost::optional<std::pair<Key128, Key128>> ParseTicket(
const TicketRaw& ticket, const RSAKeyPair<2048>& eticket_extended_key);
} // namespace Core::Crypto
|
