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partition_data_manager: Rename system files for hekate 

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master
Zach Hilman 2018-09-29 11:48:51 +07:00
parent 8f958b89e7
commit 3ec054643e
6 changed files with 247 additions and 195 deletions
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292
src/core/crypto/key_manager.cpp
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@ -5,6 +5,7 @@
#include <algorithm>
#include <array>
#include <bitset>
#include <cctype>
#include <fstream>
#include <locale>
#include <map>
@ -23,6 +24,7 @@
#include "common/logging/log.h"
#include "core/crypto/aes_util.h"
#include "core/crypto/key_manager.h"
#include "core/crypto/partition_data_manager.h"
#include "core/file_sys/content_archive.h"
#include "core/file_sys/nca_metadata.h"
#include "core/file_sys/partition_filesystem.h"
@ -37,11 +39,21 @@ constexpr u64 CURRENT_CRYPTO_REVISION = 0x5;
using namespace Common;
const static std::array<SHA256Hash, 4> eticket_source_hashes{
const std::array<SHA256Hash, 2> eticket_source_hashes{
"B71DB271DC338DF380AA2C4335EF8873B1AFD408E80B3582D8719FC81C5E511C"_array32, // eticket_rsa_kek_source
"E8965A187D30E57869F562D04383C996DE487BBA5761363D2D4D32391866A85C"_array32, // eticket_rsa_kekek_source
};
const std::map<std::pair<S128KeyType, u64>, std::string> KEYS_VARIABLE_LENGTH{
{{S128KeyType::Master, 0}, "master_key_"},
{{S128KeyType::Package1, 0}, "package1_key_"},
{{S128KeyType::Package2, 0}, "package2_key_"},
{{S128KeyType::Titlekek, 0}, "titlekek_"},
{{S128KeyType::Source, static_cast<u64>(SourceKeyType::Keyblob)}, "keyblob_key_source_"},
{{S128KeyType::Keyblob, 0}, "keyblob_key_"},
{{S128KeyType::KeyblobMAC, 0}, "keyblob_mac_key_"},
};
Key128 GenerateKeyEncryptionKey(Key128 source, Key128 master, Key128 kek_seed, Key128 key_seed) {
Key128 out{};
@ -58,7 +70,7 @@ Key128 GenerateKeyEncryptionKey(Key128 source, Key128 master, Key128 kek_seed, K
return out;
}
Key128 DeriveKeyblobKey(Key128 sbk, Key128 tsec, Key128 source) {
Key128 DeriveKeyblobKey(const Key128& sbk, const Key128& tsec, Key128 source) {
AESCipher<Key128> sbk_cipher(sbk, Mode::ECB);
AESCipher<Key128> tsec_cipher(tsec, Mode::ECB);
tsec_cipher.Transcode(source.data(), source.size(), source.data(), Op::Decrypt);
@ -66,6 +78,69 @@ Key128 DeriveKeyblobKey(Key128 sbk, Key128 tsec, Key128 source) {
return source;
}
Key128 DeriveMasterKey(const std::array<u8, 0x90>& keyblob, const Key128& master_source) {
Key128 master_root;
std::memcpy(master_root.data(), keyblob.data(), sizeof(Key128));
AESCipher<Key128> master_cipher(master_root, Mode::ECB);
Key128 master{};
master_cipher.Transcode(master_source.data(), master_source.size(), master.data(), Op::Decrypt);
return master;
}
std::array<u8, 144> DecryptKeyblob(const std::array<u8, 176>& encrypted_keyblob,
const Key128& key) {
std::array<u8, 0x90> keyblob;
AESCipher<Key128> cipher(key, Mode::CTR);
cipher.SetIV(std::vector<u8>(encrypted_keyblob.data() + 0x10, encrypted_keyblob.data() + 0x20));
cipher.Transcode(encrypted_keyblob.data() + 0x20, keyblob.size(), keyblob.data(), Op::Decrypt);
return keyblob;
}
void KeyManager::DeriveGeneralPurposeKeys(u8 crypto_revision) {
const auto kek_generation_source =
GetKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::AESKekGeneration));
const auto key_generation_source =
GetKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::AESKeyGeneration));
if (HasKey(S128KeyType::Master, crypto_revision)) {
for (auto kak_type :
{KeyAreaKeyType::Application, KeyAreaKeyType::Ocean, KeyAreaKeyType::System}) {
if (HasKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::KeyAreaKey),
static_cast<u64>(kak_type))) {
const auto source =
GetKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::KeyAreaKey),
static_cast<u64>(kak_type));
const auto kek =
GenerateKeyEncryptionKey(source, GetKey(S128KeyType::Master, crypto_revision),
kek_generation_source, key_generation_source);
SetKey(S128KeyType::KeyArea, kek, crypto_revision, static_cast<u64>(kak_type));
}
}
AESCipher<Key128> master_cipher(GetKey(S128KeyType::Master, crypto_revision), Mode::ECB);
for (auto key_type : {SourceKeyType::Titlekek, SourceKeyType::Package2}) {
if (HasKey(S128KeyType::Source, static_cast<u64>(key_type))) {
Key128 key{};
master_cipher.Transcode(
GetKey(S128KeyType::Source, static_cast<u64>(key_type)).data(), key.size(),
key.data(), Op::Decrypt);
SetKey(key_type == SourceKeyType::Titlekek ? S128KeyType::Titlekek
: S128KeyType::Package2,
key, crypto_revision);
}
}
}
}
Key128 DeriveKeyblobMACKey(const Key128& keyblob_key, const Key128& mac_source) {
AESCipher<Key128> mac_cipher(keyblob_key, Mode::ECB);
Key128 mac_key{};
mac_cipher.Transcode(mac_source.data(), mac_key.size(), mac_key.data(), Op::Decrypt);
return mac_key;
}
boost::optional<Key128> DeriveSDSeed() {
const FileUtil::IOFile save_43(FileUtil::GetUserPath(FileUtil::UserPath::NANDDir) +
"/system/save/8000000000000043",
@ -166,10 +241,10 @@ std::vector<TicketRaw> GetTicketblob(const FileUtil::IOFile& ticket_save) {
for (std::size_t offset = 0; offset + 0x4 < buffer.size(); ++offset) {
if (buffer[offset] == 0x4 && buffer[offset + 1] == 0x0 && buffer[offset + 2] == 0x1 &&
buffer[offset + 3] == 0x0) {
TicketRaw next{};
out.emplace_back();
auto& next = out.back();
std::memcpy(&next, buffer.data() + offset, sizeof(TicketRaw));
offset += next.size();
out.push_back(next);
}
}
@ -180,8 +255,7 @@ template <size_t size>
static std::array<u8, size> operator^(const std::array<u8, size>& lhs,
const std::array<u8, size>& rhs) {
std::array<u8, size> out{};
for (size_t i = 0; i < size; ++i)
out[i] = lhs[i] ^ rhs[i];
std::transform(lhs.begin(), lhs.end(), rhs.begin(), out.begin(), std::bit_xor<>());
return out;
}
@ -193,17 +267,32 @@ static std::array<u8, target_size> MGF1(const std::array<u8, in_size>& seed) {
std::vector<u8> out;
size_t i = 0;
while (out.size() < target_size) {
out.resize(out.size() + 0x20, 0);
out.resize(out.size() + 0x20);
seed_exp[in_size + 3] = i;
mbedtls_sha256(seed_exp.data(), seed_exp.size(), out.data() + out.size() - 0x20, 0);
++i;
}
std::array<u8, target_size> target{};
std::array<u8, target_size> target;
std::memcpy(target.data(), out.data(), target_size);
return target;
}
template <size_t size>
static boost::optional<u64> FindTicketOffset(const std::array<u8, size>& data) {
u64 offset = 0;
for (size_t i = 0x20; i < data.size() - 0x10; ++i) {
if (data[i] == 0x1) {
offset = i + 1;
break;
} else if (data[i] != 0x0) {
return boost::none;
}
}
return offset;
}
boost::optional<std::pair<Key128, Key128>> ParseTicket(const TicketRaw& ticket,
const RSAKeyPair<2048>& key) {
u32 cert_authority;
@ -215,14 +304,17 @@ boost::optional<std::pair<Key128, Key128>> ParseTicket(const TicketRaw& ticket,
"Attempting to parse ticket with non-standard certificate authority {:08X}.",
cert_authority);
Key128 rights_id{};
Key128 rights_id;
std::memcpy(rights_id.data(), ticket.data() + 0x2A0, sizeof(Key128));
if (rights_id == Key128{})
return boost::none;
Key128 key_temp{};
if (!std::any_of(ticket.begin() + 0x190, ticket.begin() + 0x280, [](u8 b) { return b != 0; })) {
std::memcpy(key_temp.data(), ticket.data() + 0x180, key_temp.size());
return std::pair<Key128, Key128>{rights_id, key_temp};
return std::make_pair(rights_id, key_temp);
}
mbedtls_mpi D; // RSA Private Exponent
@ -241,13 +333,13 @@ boost::optional<std::pair<Key128, Key128>> ParseTicket(const TicketRaw& ticket,
mbedtls_mpi_exp_mod(&M, &S, &D, &N, nullptr);
std::array<u8, 0x100> rsa_step{};
std::array<u8, 0x100> rsa_step;
mbedtls_mpi_write_binary(&M, rsa_step.data(), rsa_step.size());
u8 m_0 = rsa_step[0];
std::array<u8, 0x20> m_1{};
std::array<u8, 0x20> m_1;
std::memcpy(m_1.data(), rsa_step.data() + 0x01, m_1.size());
std::array<u8, 0xDF> m_2{};
std::array<u8, 0xDF> m_2;
std::memcpy(m_2.data(), rsa_step.data() + 0x21, m_2.size());
if (m_0 != 0)
@ -256,21 +348,14 @@ boost::optional<std::pair<Key128, Key128>> ParseTicket(const TicketRaw& ticket,
m_1 = m_1 ^ MGF1<0x20>(m_2);
m_2 = m_2 ^ MGF1<0xDF>(m_1);
u64 offset = 0;
for (size_t i = 0x20; i < m_2.size() - 0x10; ++i) {
if (m_2[i] == 0x1) {
offset = i + 1;
break;
} else if (m_2[i] != 0x0) {
return boost::none;
}
}
const auto offset = FindTicketOffset(m_2);
if (offset == boost::none)
return boost::none;
ASSERT(offset.get() > 0);
ASSERT(offset > 0);
std::memcpy(key_temp.data(), m_2.data() + offset.get(), key_temp.size());
std::memcpy(key_temp.data(), m_2.data() + offset, key_temp.size());
return std::pair<Key128, Key128>{rights_id, key_temp};
return std::make_pair(rights_id, key_temp);
}
KeyManager::KeyManager() {
@ -293,10 +378,11 @@ KeyManager::KeyManager() {
AttemptLoadKeyFile(yuzu_keys_dir, yuzu_keys_dir, "console.keys_autogenerated", false);
}
static bool ValidCryptoRevisionString(const std::string& base, size_t begin, size_t length) {
static bool ValidCryptoRevisionString(std::string_view base, size_t begin, size_t length) {
if (base.size() < begin + length)
return false;
return std::all_of(base.begin() + begin, base.begin() + begin + length, ::isdigit);
return std::all_of(base.begin() + begin, base.begin() + begin + length,
[](u8 c) { return std::isdigit(c); });
}
void KeyManager::LoadFromFile(const std::string& filename, bool is_title_keys) {
@ -351,16 +437,7 @@ void KeyManager::LoadFromFile(const std::string& filename, bool is_title_keys) {
const auto index = std::stoul(out[0].substr(18, 2), nullptr, 16);
encrypted_keyblobs[index] = Common::HexStringToArray<0xB0>(out[1]);
} else {
for (const auto& kv : std::map<std::pair<S128KeyType, u64>, std::string>{
{{S128KeyType::Master, 0}, "master_key_"},
{{S128KeyType::Package1, 0}, "package1_key_"},
{{S128KeyType::Package2, 0}, "package2_key_"},
{{S128KeyType::Titlekek, 0}, "titlekek_"},
{{S128KeyType::Source, static_cast<u64>(SourceKeyType::Keyblob)},
"keyblob_key_source_"},
{{S128KeyType::Keyblob, 0}, "keyblob_key_"},
{{S128KeyType::KeyblobMAC, 0}, "keyblob_mac_key_"},
}) {
for (const auto& kv : KEYS_VARIABLE_LENGTH) {
if (!ValidCryptoRevisionString(out[0], kv.second.size(), 2))
continue;
if (out[0].compare(0, kv.second.size(), kv.second) == 0) {
@ -379,9 +456,9 @@ void KeyManager::LoadFromFile(const std::string& filename, bool is_title_keys) {
}
}
const static std::array<const char*, 3> kak_names = {
static constexpr std::array<const char*, 3> kak_names = {
"key_area_key_application_", "key_area_key_ocean_", "key_area_key_system_"};
for (size_t j = 0; j < 3; ++j) {
for (size_t j = 0; j < kak_names.size(); ++j) {
const auto& match = kak_names[j];
if (out[0].compare(0, std::strlen(match), match) == 0) {
const auto index =
@ -403,7 +480,7 @@ void KeyManager::AttemptLoadKeyFile(const std::string& dir1, const std::string&
LoadFromFile(dir2 + DIR_SEP + filename, title);
}
bool KeyManager::BaseDeriveNecessary() {
bool KeyManager::BaseDeriveNecessary() const {
const auto check_key_existence = [this](auto key_type, u64 index1 = 0, u64 index2 = 0) {
return !HasKey(key_type, index1, index2);
};
@ -512,9 +589,9 @@ void KeyManager::SetKey(S128KeyType id, Key128 key, u64 field1, u64 field2) {
// Variable cases
if (id == S128KeyType::KeyArea) {
const static std::array<const char*, 3> kak_names = {"key_area_key_application_{:02X}",
"key_area_key_ocean_{:02X}",
"key_area_key_system_{:02X}"};
static constexpr std::array<const char*, 3> kak_names = {"key_area_key_application_{:02X}",
"key_area_key_ocean_{:02X}",
"key_area_key_system_{:02X}"};
WriteKeyToFile(category, fmt::format(kak_names.at(field2), field1), key);
} else if (id == S128KeyType::Master) {
WriteKeyToFile(category, fmt::format("master_key_{:02X}", field1), key);
@ -575,11 +652,11 @@ void KeyManager::DeriveSDSeedLazy() {
SetKey(S128KeyType::SDSeed, res.get());
}
static Key128 CalculateCMAC(const u8* source, size_t size, Key128 key) {
static Key128 CalculateCMAC(const u8* source, size_t size, const Key128& key) {
Key128 out{};
mbedtls_cipher_cmac(mbedtls_cipher_info_from_type(MBEDTLS_CIPHER_AES_128_ECB), key.data(), 0x80,
source, size, out.data());
mbedtls_cipher_cmac(mbedtls_cipher_info_from_type(MBEDTLS_CIPHER_AES_128_ECB), key.data(),
key.size() * 8, source, size, out.data());
return out;
}
@ -610,12 +687,12 @@ void KeyManager::DeriveBase() {
else if (has_bis(3) && !has_bis(2))
copy_bis(3, 2);
std::bitset<32> revisions{};
revisions.set();
for (size_t i = 0; i < 32; ++i) {
std::bitset<32> revisions(0xFFFFFFFF);
for (size_t i = 0; i < revisions.size(); ++i) {
if (!HasKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::Keyblob), i) ||
encrypted_keyblobs[i] == std::array<u8, 0xB0>{})
encrypted_keyblobs[i] == std::array<u8, 0xB0>{}) {
revisions.reset(i);
}
}
if (!revisions.any())
@ -624,12 +701,8 @@ void KeyManager::DeriveBase() {
const auto sbk = GetKey(S128KeyType::SecureBoot);
const auto tsec = GetKey(S128KeyType::TSEC);
const auto master_source = GetKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::Master));
const auto kek_generation_source =
GetKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::AESKekGeneration));
const auto key_generation_source =
GetKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::AESKeyGeneration));
for (size_t i = 0; i < 32; ++i) {
for (size_t i = 0; i < revisions.size(); ++i) {
if (!revisions[i])
continue;
@ -643,13 +716,8 @@ void KeyManager::DeriveBase() {
if (!HasKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::KeyblobMAC)))
continue;
const auto mac_source =
GetKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::KeyblobMAC));
AESCipher<Key128> mac_cipher(key, Mode::ECB);
Key128 mac_key{};
mac_cipher.Transcode(mac_source.data(), mac_key.size(), mac_key.data(), Op::Decrypt);
const auto mac_key = DeriveKeyblobMACKey(
key, GetKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::KeyblobMAC)));
SetKey(S128KeyType::KeyblobMAC, mac_key, i);
Key128 cmac = CalculateCMAC(encrypted_keyblobs[i].data() + 0x10, 0xA0, mac_key);
@ -657,39 +725,27 @@ void KeyManager::DeriveBase() {
continue;
// Decrypt keyblob
bool has_keyblob = keyblobs[i] != std::array<u8, 0x90>{};
AESCipher<Key128> cipher(key, Mode::CTR);
cipher.SetIV(std::vector<u8>(encrypted_keyblobs[i].data() + 0x10,
encrypted_keyblobs[i].data() + 0x20));
cipher.Transcode(encrypted_keyblobs[i].data() + 0x20, keyblobs[i].size(),
keyblobs[i].data(), Op::Decrypt);
if (!has_keyblob) {
if (keyblobs[i] == std::array<u8, 0x90>{}) {
keyblobs[i] = DecryptKeyblob(encrypted_keyblobs[i], key);
WriteKeyToFile<0x90>(KeyCategory::Console, fmt::format("keyblob_{:02X}", i),
keyblobs[i]);
}
Key128 package1{};
Key128 package1;
std::memcpy(package1.data(), keyblobs[i].data() + 0x80, sizeof(Key128));
SetKey(S128KeyType::Package1, package1, i);
// Derive master key
if (HasKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::Master))) {
Key128 master_root{};
std::memcpy(master_root.data(), keyblobs[i].data(), sizeof(Key128));
AESCipher<Key128> master_cipher(master_root, Mode::ECB);
Key128 master{};
master_cipher.Transcode(master_source.data(), master_source.size(), master.data(),
Op::Decrypt);
SetKey(S128KeyType::Master, master, i);
SetKey(S128KeyType::Master,
DeriveMasterKey(keyblobs[i], GetKey(S128KeyType::Source,
static_cast<u64>(SourceKeyType::Master))),
i);
}
}
revisions.set();
for (size_t i = 0; i < 32; ++i) {
for (size_t i = 0; i < revisions.size(); ++i) {
if (!HasKey(S128KeyType::Master, i))
revisions.reset(i);
}
@ -697,39 +753,12 @@ void KeyManager::DeriveBase() {
if (!revisions.any())
return;
for (size_t i = 0; i < 32; ++i) {
for (size_t i = 0; i < revisions.size(); ++i) {
if (!revisions[i])
continue;
// Derive general purpose keys
if (HasKey(S128KeyType::Master, i)) {
for (auto kak_type :
{KeyAreaKeyType::Application, KeyAreaKeyType::Ocean, KeyAreaKeyType::System}) {
if (HasKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::KeyAreaKey),
static_cast<u64>(kak_type))) {
const auto source =
GetKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::KeyAreaKey),
static_cast<u64>(kak_type));
const auto kek =
GenerateKeyEncryptionKey(source, GetKey(S128KeyType::Master, i),
kek_generation_source, key_generation_source);
SetKey(S128KeyType::KeyArea, kek, i, static_cast<u64>(kak_type));
}
}
AESCipher<Key128> master_cipher(GetKey(S128KeyType::Master, i), Mode::ECB);
for (auto key_type : {SourceKeyType::Titlekek, SourceKeyType::Package2}) {
if (HasKey(S128KeyType::Source, static_cast<u64>(key_type))) {
Key128 key{};
master_cipher.Transcode(
GetKey(S128KeyType::Source, static_cast<u64>(key_type)).data(), key.size(),
key.data(), Op::Decrypt);
SetKey(key_type == SourceKeyType::Titlekek ? S128KeyType::Titlekek
: S128KeyType::Package2,
key, i);
}
}
}
DeriveGeneralPurposeKeys(i);
}
if (HasKey(S128KeyType::Master, 0) &&
@ -751,7 +780,7 @@ void KeyManager::DeriveBase() {
}
}
void KeyManager::DeriveETicket(PartitionDataManager data) {
void KeyManager::DeriveETicket(PartitionDataManager& data) {
// ETicket keys
const auto es = Service::FileSystem::GetUnionContents()->GetEntry(
0x0100000000000033, FileSys::ContentRecordType::Program);
@ -769,30 +798,30 @@ void KeyManager::DeriveETicket(PartitionDataManager data) {
const auto bytes = main->ReadAllBytes();
using namespace Common;
const auto eticket_kek = FindKeyFromHex(bytes, eticket_source_hashes[0]);
const auto eticket_kekek = FindKeyFromHex(bytes, eticket_source_hashes[1]);
const auto eticket_kek = FindKeyFromHex16(bytes, eticket_source_hashes[0]);
const auto eticket_kekek = FindKeyFromHex16(bytes, eticket_source_hashes[1]);
const auto seed3 = data.GetRSAKekSeed3();
const auto mask0 = data.GetRSAKekMask0();
if (eticket_kek != Key128{})
SetKey(S128KeyType::Source, eticket_kek, static_cast<size_t>(SourceKeyType::ETicketKek));
if (eticket_kekek != Key128{})
if (eticket_kekek != Key128{}) {
SetKey(S128KeyType::Source, eticket_kekek,
static_cast<size_t>(SourceKeyType::ETicketKekek));
}
if (seed3 != Key128{})
SetKey(S128KeyType::RSAKek, seed3, static_cast<size_t>(RSAKekType::Seed3));
if (mask0 != Key128{})
SetKey(S128KeyType::RSAKek, mask0, static_cast<size_t>(RSAKekType::Mask0));
if (eticket_kek == Key128{} || eticket_kekek == Key128{} || seed3 == Key128{} ||
mask0 == Key128{})
mask0 == Key128{}) {
return;
}
Key128 rsa_oaep_kek{};
for (size_t i = 0; i < rsa_oaep_kek.size(); ++i)
rsa_oaep_kek[i] = seed3[i] ^ mask0[i];
std::transform(seed3.begin(), seed3.end(), mask0.begin(), rsa_oaep_kek.begin(),
std::bit_xor<>());
if (rsa_oaep_kek == Key128{})
return;
@ -818,8 +847,7 @@ void KeyManager::DeriveETicket(PartitionDataManager data) {
SetKey(S128KeyType::ETicketRSAKek, eticket_final);
// Titlekeys
data.DecryptProdInfo(GetKey(S128KeyType::BIS),
GetKey(S128KeyType::BIS, 0, static_cast<u64>(BISKeyType::Tweak)));
data.DecryptProdInfo(GetBISKey(0));
const auto eticket_extended_kek = data.GetETicketExtendedKek();
@ -851,8 +879,8 @@ void KeyManager::DeriveETicket(PartitionDataManager data) {
const auto pair = ParseTicket(raw, rsa_key);
if (pair == boost::none)
continue;
auto [rid, key] = pair.value();
u128 rights_id{};
const auto& [rid, key] = pair.value();
u128 rights_id;
std::memcpy(rights_id.data(), rid.data(), rid.size());
SetKey(S128KeyType::Titlekey, key, rights_id[1], rights_id[0]);
}
@ -870,14 +898,14 @@ void KeyManager::SetKeyWrapped(S256KeyType id, Key256 key, u64 field1, u64 field
SetKey(id, key, field1, field2);
}
void KeyManager::PopulateFromPartitionData(PartitionDataManager data) {
void KeyManager::PopulateFromPartitionData(PartitionDataManager& data) {
if (!BaseDeriveNecessary())
return;
if (!data.HasBoot0())
return;
for (size_t i = 0; i < 0x20; ++i) {
for (size_t i = 0; i < encrypted_keyblobs.size(); ++i) {
if (encrypted_keyblobs[i] != std::array<u8, 0xB0>{})
continue;
encrypted_keyblobs[i] = data.GetEncryptedKeyblob(i);
@ -907,15 +935,15 @@ void KeyManager::PopulateFromPartitionData(PartitionDataManager data) {
DeriveBase();
Key128 latest_master{};
for (s8 i = 0x1F; i > 0; --i) {
if (GetKey(S128KeyType::Master, i) != Key128{}) {
latest_master = GetKey(S128KeyType::Master, i);
for (s8 i = 0x1F; i >= 0; --i) {
if (GetKey(S128KeyType::Master, static_cast<u8>(i)) != Key128{}) {
latest_master = GetKey(S128KeyType::Master, static_cast<u8>(i));
break;
}
}
const auto masters = data.GetTZMasterKeys(latest_master);
for (size_t i = 0; i < 0x20; ++i) {
for (size_t i = 0; i < masters.size(); ++i) {
if (masters[i] != Key128{} && !HasKey(S128KeyType::Master, i))
SetKey(S128KeyType::Master, masters[i], i);
}
@ -926,7 +954,7 @@ void KeyManager::PopulateFromPartitionData(PartitionDataManager data) {
return;
std::array<Key128, 0x20> package2_keys{};
for (size_t i = 0; i < 0x20; ++i) {
for (size_t i = 0; i < package2_keys.size(); ++i) {
if (HasKey(S128KeyType::Package2, i))
package2_keys[i] = GetKey(S128KeyType::Package2, i);
}

16
src/core/crypto/key_manager.h
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@ -11,8 +11,8 @@
#include <boost/optional.hpp>
#include <fmt/format.h>
#include "common/common_types.h"
#include "core/crypto/partition_data_manager.h"
#include "core/file_sys/vfs_types.h"
#include "partition_data_manager.h"
namespace FileUtil {
class IOFile;
@ -154,11 +154,11 @@ public:
// 8*43 and the private file to exist.
void DeriveSDSeedLazy();
bool BaseDeriveNecessary();
bool BaseDeriveNecessary() const;
void DeriveBase();
void DeriveETicket(PartitionDataManager data);
void DeriveETicket(PartitionDataManager& data);
void PopulateFromPartitionData(PartitionDataManager data);
void PopulateFromPartitionData(PartitionDataManager& data);
private:
std::map<KeyIndex<S128KeyType>, Key128> s128_keys;
@ -175,6 +175,8 @@ private:
void WriteKeyToFile(KeyCategory category, std::string_view keyname,
const std::array<u8, Size>& key);
void DeriveGeneralPurposeKeys(u8 crypto_revision);
void SetKeyWrapped(S128KeyType id, Key128 key, u64 field1 = 0, u64 field2 = 0);
void SetKeyWrapped(S256KeyType id, Key256 key, u64 field1 = 0, u64 field2 = 0);
@ -183,7 +185,11 @@ private:
};
Key128 GenerateKeyEncryptionKey(Key128 source, Key128 master, Key128 kek_seed, Key128 key_seed);
Key128 DeriveKeyblobKey(Key128 sbk, Key128 tsec, Key128 source);
Key128 DeriveKeyblobKey(const Key128& sbk, const Key128& tsec, Key128 source);
Key128 DeriveKeyblobMACKey(const Key128& keyblob_key, const Key128& mac_source);
Key128 DeriveMasterKey(const std::array<u8, 0x90>& keyblob, const Key128& master_source);
std::array<u8, 0x90> DecryptKeyblob(const std::array<u8, 0xB0>& encrypted_keyblob,
const Key128& key);
boost::optional<Key128> DeriveSDSeed();
Loader::ResultStatus DeriveSDKeys(std::array<Key256, 2>& sd_keys, KeyManager& keys);

89
src/core/crypto/partition_data_manager.cpp
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@ -7,20 +7,24 @@
// hash the new keyblob source and master key and add the hashes to
// the arrays below.
#include <algorithm>
#include <array>
#include <cctype>
#include <cstring>
#include <boost/optional/optional.hpp>
#include <mbedtls/sha256.h>
#include "common/assert.h"
#include "common/common_funcs.h"
#include "common/common_types.h"
#include "common/hex_util.h"
#include "common/logging/log.h"
#include "common/string_util.h"
#include "core/crypto/ctr_encryption_layer.h"
#include "core/crypto/key_manager.h"
#include "core/crypto/partition_data_manager.h"
#include "core/crypto/xts_encryption_layer.h"
#include "core/file_sys/vfs.h"
#include "core/file_sys/vfs_offset.h"
#include "ctr_encryption_layer.h"
#include "xts_encryption_layer.h"
using namespace Common;
@ -72,7 +76,7 @@ struct KIPHeader {
};
static_assert(sizeof(KIPHeader) == 0x100, "KIPHeader has incorrect size.");
const static std::array<SHA256Hash, 0x10> source_hashes{
const std::array<SHA256Hash, 0x10> source_hashes{
"B24BD293259DBC7AC5D63F88E60C59792498E6FC5443402C7FFE87EE8B61A3F0"_array32, // keyblob_mac_key_source
"7944862A3A5C31C6720595EFD302245ABD1B54CCDCF33000557681E65C5664A4"_array32, // master_key_source
"21E2DF100FC9E094DB51B47B9B1D6E94ED379DB8B547955BEF8FE08D8DD35603"_array32, // package2_key_source
@ -91,7 +95,7 @@ const static std::array<SHA256Hash, 0x10> source_hashes{
"FC02B9D37B42D7A1452E71444F1F700311D1132E301A83B16062E72A78175085"_array32, // rsa_kek_mask0
};
const static std::array<SHA256Hash, 0x20> keyblob_source_hashes{
const std::array<SHA256Hash, 0x20> keyblob_source_hashes{
"8A06FE274AC491436791FDB388BCDD3AB9943BD4DEF8094418CDAC150FD73786"_array32, // keyblob_key_source_00
"2D5CAEB2521FEF70B47E17D6D0F11F8CE2C1E442A979AD8035832C4E9FBCCC4B"_array32, // keyblob_key_source_01
"61C5005E713BAE780641683AF43E5F5C0E03671117F702F401282847D2FC6064"_array32, // keyblob_key_source_02
@ -129,7 +133,7 @@ const static std::array<SHA256Hash, 0x20> keyblob_source_hashes{
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_1F
};
const static std::array<SHA256Hash, 0x20> master_key_hashes{
const std::array<SHA256Hash, 0x20> master_key_hashes{
"0EE359BE3C864BB0782E1D70A718A0342C551EED28C369754F9C4F691BECF7CA"_array32, // master_key_00
"4FE707B7E4ABDAF727C894AAF13B1351BFE2AC90D875F73B2E20FA94B9CC661E"_array32, // master_key_01
"79277C0237A2252EC3DFAC1F7C359C2B3D121E9DB15BB9AB4C2B4408D2F3AE09"_array32, // master_key_02
@ -167,7 +171,7 @@ const static std::array<SHA256Hash, 0x20> master_key_hashes{
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_1F
};
std::vector<u8> DecompressBLZ(const std::vector<u8>& in) {
static std::vector<u8> DecompressBLZ(const std::vector<u8>& in) {
const auto data_size = in.size() - 0xC;
u32 compressed_size{};
@ -226,10 +230,10 @@ std::vector<u8> DecompressBLZ(const std::vector<u8>& in) {
return out;
}
u8 CalculateMaxKeyblobSourceHash() {
static u8 CalculateMaxKeyblobSourceHash() {
for (s8 i = 0x1F; i >= 0; --i) {
if (keyblob_source_hashes[i] != SHA256Hash{})
return i + 1;
return static_cast<u8>(i + 1);
}
return 0;
@ -238,10 +242,12 @@ u8 CalculateMaxKeyblobSourceHash() {
const u8 PartitionDataManager::MAX_KEYBLOB_SOURCE_HASH = CalculateMaxKeyblobSourceHash();
template <size_t key_size = 0x10>
std::array<u8, key_size> FindKeyFromHex(const std::vector<u8>& binary, std::array<u8, 0x20> hash) {
std::array<u8, 0x20> temp{};
std::array<u8, key_size> FindKeyFromHex(const std::vector<u8>& binary,
const std::array<u8, 0x20>& hash) {
if (binary.size() < key_size)
return {};
std::array<u8, 0x20> temp{};
for (size_t i = 0; i < binary.size() - key_size; ++i) {
mbedtls_sha256(binary.data() + i, key_size, temp.data(), 0);
@ -256,19 +262,24 @@ std::array<u8, key_size> FindKeyFromHex(const std::vector<u8>& binary, std::arra
return {};
}
std::array<Key128, 0x20> FindEncryptedMasterKeyFromHex(const std::vector<u8>& binary, Key128 key) {
SHA256Hash temp{};
Key128 dec_temp{};
std::array<u8, 16> FindKeyFromHex16(const std::vector<u8>& binary, std::array<u8, 32> hash) {
return FindKeyFromHex<0x10>(binary, hash);
}
static std::array<Key128, 0x20> FindEncryptedMasterKeyFromHex(const std::vector<u8>& binary,
const Key128& key) {
if (binary.size() < 0x10)
return {};
SHA256Hash temp{};
Key128 dec_temp{};
std::array<Key128, 0x20> out{};
AESCipher<Key128> cipher(key, Mode::ECB);
for (size_t i = 0; i < binary.size() - 0x10; ++i) {
cipher.Transcode(binary.data() + i, dec_temp.size(), dec_temp.data(), Op::Decrypt);
mbedtls_sha256(dec_temp.data(), dec_temp.size(), temp.data(), 0);
for (size_t k = 0; k < 0x20; ++k) {
for (size_t k = 0; k < out.size(); ++k) {
if (temp == master_key_hashes[k]) {
out[k] = dec_temp;
break;
@ -282,7 +293,7 @@ std::array<Key128, 0x20> FindEncryptedMasterKeyFromHex(const std::vector<u8>& bi
FileSys::VirtualFile FindFileInDirWithNames(const FileSys::VirtualDir& dir,
const std::string& name) {
auto upper = name;
std::transform(upper.begin(), upper.end(), upper.begin(), ::toupper);
std::transform(upper.begin(), upper.end(), upper.begin(), [](u8 c) { return std::toupper(c); });
for (const auto& fname : {name, name + ".bin", upper, upper + ".BIN"}) {
if (dir->GetFile(fname) != nullptr)
return dir->GetFile(fname);
@ -303,14 +314,16 @@ PartitionDataManager::PartitionDataManager(FileSys::VirtualDir sysdata_dir)
FindFileInDirWithNames(sysdata_dir, "BCPKG2-5-Repair-Main"),
FindFileInDirWithNames(sysdata_dir, "BCPKG2-6-Repair-Sub"),
}),
secure_monitor(FindFileInDirWithNames(sysdata_dir, "sm")),
package1_decrypted(FindFileInDirWithNames(sysdata_dir, "pkg_decr")),
secure_monitor(FindFileInDirWithNames(sysdata_dir, "secmon")),
package1_decrypted(FindFileInDirWithNames(sysdata_dir, "pkg1_decr")),
secure_monitor_bytes(secure_monitor == nullptr ? std::vector<u8>{}
: secure_monitor->ReadAllBytes()),
package1_decrypted_bytes(package1_decrypted == nullptr ? std::vector<u8>{}
: package1_decrypted->ReadAllBytes()),
prodinfo(FindFileInDirWithNames(sysdata_dir, "PRODINFO")) {}
PartitionDataManager::~PartitionDataManager() = default;
bool PartitionDataManager::HasBoot0() const {
return boot0 != nullptr;
}
@ -417,6 +430,22 @@ FileSys::VirtualFile PartitionDataManager::GetPackage2Raw(Package2Type type) con
return package2.at(static_cast<size_t>(type));
}
bool AttemptDecrypt(const std::array<u8, 16>& key, Package2Header& header) {
const std::vector<u8> iv(header.header_ctr.begin(), header.header_ctr.end());
Package2Header temp = header;
AESCipher<Key128> cipher(key, Mode::CTR);
cipher.SetIV(iv);
cipher.Transcode(&temp.header_ctr, sizeof(Package2Header) - 0x100, &temp.header_ctr,
Op::Decrypt);
if (temp.magic == Common::MakeMagic('P', 'K', '2', '1')) {
header = temp;
return true;
}
return false;
}
void PartitionDataManager::DecryptPackage2(std::array<std::array<u8, 16>, 0x20> package2_keys,
Package2Type type) {
FileSys::VirtualFile file = std::make_shared<FileSys::OffsetVfsFile>(
@ -429,18 +458,9 @@ void PartitionDataManager::DecryptPackage2(std::array<std::array<u8, 16>, 0x20>
u8 revision = 0xFF;
if (header.magic != Common::MakeMagic('P', 'K', '2', '1')) {
for (size_t i = 0; i < 0x20; ++i) {
const std::vector<u8> iv(header.header_ctr.begin(), header.header_ctr.end());
Package2Header temp = header;
AESCipher<Key128> cipher(package2_keys[i], Mode::CTR);
cipher.SetIV(iv);
cipher.Transcode(&temp.header_ctr, sizeof(Package2Header) - 0x100, &temp.header_ctr,
Op::Decrypt);
if (temp.magic == Common::MakeMagic('P', 'K', '2', '1')) {
header = temp;
for (size_t i = 0; i < package2_keys.size(); ++i) {
if (AttemptDecrypt(package2_keys[i], header))
revision = i;
break;
}
}
}
@ -460,7 +480,7 @@ void PartitionDataManager::DecryptPackage2(std::array<std::array<u8, 16>, 0x20>
// package2_decrypted[static_cast<size_t>(type)] = s1;
INIHeader ini{};
INIHeader ini;
std::memcpy(&ini, c.data(), sizeof(INIHeader));
if (ini.magic != Common::MakeMagic('I', 'N', 'I', '1'))
return;
@ -468,7 +488,7 @@ void PartitionDataManager::DecryptPackage2(std::array<std::array<u8, 16>, 0x20>
std::map<u64, KIPHeader> kips{};
u64 offset = sizeof(INIHeader);
for (size_t i = 0; i < ini.process_count; ++i) {
KIPHeader kip{};
KIPHeader kip;
std::memcpy(&kip, c.data() + offset, sizeof(KIPHeader));
if (kip.magic != Common::MakeMagic('K', 'I', 'P', '1'))
return;
@ -565,16 +585,11 @@ FileSys::VirtualFile PartitionDataManager::GetProdInfoRaw() const {
return prodinfo;
}
void PartitionDataManager::DecryptProdInfo(std::array<u8, 16> bis_crypt,
std::array<u8, 16> bis_tweak) {
void PartitionDataManager::DecryptProdInfo(std::array<u8, 0x20> bis_key) {
if (prodinfo == nullptr)
return;
Key256 final_key{};
std::memcpy(final_key.data(), bis_crypt.data(), bis_crypt.size());
std::memcpy(final_key.data() + sizeof(Key128), bis_tweak.data(), bis_tweak.size());
prodinfo_decrypted = std::make_shared<XTSEncryptionLayer>(prodinfo, final_key);
prodinfo_decrypted = std::make_shared<XTSEncryptionLayer>(prodinfo, bis_key);
}
std::array<u8, 576> PartitionDataManager::GetETicketExtendedKek() const {

9
src/core/crypto/partition_data_manager.h
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@ -3,6 +3,7 @@
// Refer to the license.txt file included.
#pragma once
#include <vector>
#include "common/common_funcs.h"
#include "common/common_types.h"
@ -22,9 +23,10 @@ enum class Package2Type {
class PartitionDataManager {
public:
const static u8 MAX_KEYBLOB_SOURCE_HASH;
static const u8 MAX_KEYBLOB_SOURCE_HASH;
explicit PartitionDataManager(FileSys::VirtualDir sysdata_dir);
~PartitionDataManager();
// BOOT0
bool HasBoot0() const;
@ -77,7 +79,7 @@ public:
// PRODINFO
bool HasProdInfo() const;
FileSys::VirtualFile GetProdInfoRaw() const;
void DecryptProdInfo(std::array<u8, 0x10> bis_crypt, std::array<u8, 0x10> bis_tweak);
void DecryptProdInfo(std::array<u8, 0x20> bis_key);
std::array<u8, 0x240> GetETicketExtendedKek() const;
private:
@ -98,7 +100,6 @@ private:
std::array<std::vector<u8>, 6> package2_spl;
};
template <size_t key_size = 0x10>
std::array<u8, key_size> FindKeyFromHex(const std::vector<u8>& binary, std::array<u8, 0x20> hash);
std::array<u8, 0x10> FindKeyFromHex16(const std::vector<u8>& binary, std::array<u8, 0x20> hash);
} // namespace Core::Crypto

29
src/yuzu/main.cpp
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@ -173,7 +173,7 @@ GMainWindow::GMainWindow()
show();
// Gen keys if necessary
OnReinitializeKeys(false);
OnReinitializeKeys(ReinitializeKeyBehavior::NoWarning);
// Necessary to load titles from nand in gamelist.
Service::FileSystem::CreateFactories(vfs);
@ -448,7 +448,7 @@ void GMainWindow::ConnectMenuEvents() {
// Help
connect(ui.action_Rederive, &QAction::triggered, this,
std::bind(&GMainWindow::OnReinitializeKeys, this, true));
std::bind(&GMainWindow::OnReinitializeKeys, this, ReinitializeKeyBehavior::Warning));
connect(ui.action_About, &QAction::triggered, this, &GMainWindow::OnAbout);
}
@ -1381,8 +1381,8 @@ void GMainWindow::OnCoreError(Core::System::ResultStatus result, std::string det
}
}
void GMainWindow::OnReinitializeKeys(bool callouts) {
if (callouts) {
void GMainWindow::OnReinitializeKeys(ReinitializeKeyBehavior behavior) {
if (behavior == ReinitializeKeyBehavior::Warning) {
const auto res = QMessageBox::information(
this, tr("Confirm Key Rederivation"),
tr("You are about to force rederive all of your keys. \nIf you do not know what this "
@ -1408,33 +1408,30 @@ void GMainWindow::OnReinitializeKeys(bool callouts) {
Core::Crypto::PartitionDataManager pdm{vfs->OpenDirectory(
FileUtil::GetUserPath(FileUtil::UserPath::SysDataDir), FileSys::Mode::Read)};
const auto function = [this, &keys, &pdm]() {
const auto function = [this, &keys, &pdm] {
keys.PopulateFromPartitionData(pdm);
Service::FileSystem::CreateFactories(vfs);
keys.DeriveETicket(pdm);
};
std::vector<std::string> errors;
QString errors;
if (!pdm.HasFuses())
errors.push_back("Missing fuses - Cannot derive SBK");
errors += tr("- Missing fuses - Cannot derive SBK\n");
if (!pdm.HasBoot0())
errors.push_back("Missing BOOT0 - Cannot derive master keys");
errors += tr("- Missing BOOT0 - Cannot derive master keys\n");
if (!pdm.HasPackage2())
errors.push_back("Missing BCPKG2-1-Normal-Main - Cannot derive general keys");
errors += tr("- Missing BCPKG2-1-Normal-Main - Cannot derive general keys\n");
if (!pdm.HasProdInfo())
errors.push_back("Missing PRODINFO - Cannot derive title keys");
errors += tr("- Missing PRODINFO - Cannot derive title keys\n");
if (!errors.empty()) {
std::string error_str;
for (const auto& error : errors)
error_str += " - " + error + "\n";
if (!errors.isEmpty()) {
QMessageBox::warning(
this, tr("Warning Missing Derivation Components"),
tr("The following are missing from your configuration that may hinder key "
"derivation. It will be attempted but may not complete.\n\n") +
QString::fromStdString(error_str));
errors);
}
QProgressDialog prog;
@ -1455,7 +1452,7 @@ void GMainWindow::OnReinitializeKeys(bool callouts) {
Service::FileSystem::CreateFactories(vfs);
if (callouts) {
if (behavior == ReinitializeKeyBehavior::Warning) {
game_list->PopulateAsync(UISettings::values.gamedir, UISettings::values.gamedir_deepscan);
}
}

7
src/yuzu/main.h
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@ -41,6 +41,11 @@ enum class EmulatedDirectoryTarget {
SDMC,
};
enum class ReinitializeKeyBehavior {
NoWarning,
Warning,
};
namespace DiscordRPC {
class DiscordInterface;
}
@ -167,7 +172,7 @@ private slots:
void HideFullscreen();
void ToggleWindowMode();
void OnCoreError(Core::System::ResultStatus, std::string);
void OnReinitializeKeys(bool callouts);
void OnReinitializeKeys(ReinitializeKeyBehavior behavior);
private:
void UpdateStatusBar();