diff options
Diffstat (limited to 'src/core/crypto/key_manager.cpp')
-rw-r--r-- | src/core/crypto/key_manager.cpp | 799 |
1 files changed, 745 insertions, 54 deletions
diff --git a/src/core/crypto/key_manager.cpp b/src/core/crypto/key_manager.cpp index bf3a70944..a59a7e1f5 100644 --- a/src/core/crypto/key_manager.cpp +++ b/src/core/crypto/key_manager.cpp @@ -4,23 +4,56 @@ #include <algorithm> #include <array> +#include <bitset> +#include <cctype> #include <fstream> #include <locale> +#include <map> #include <sstream> #include <string_view> #include <tuple> #include <vector> +#include <mbedtls/bignum.h> +#include <mbedtls/cipher.h> +#include <mbedtls/cmac.h> +#include <mbedtls/sha256.h> +#include "common/common_funcs.h" #include "common/common_paths.h" #include "common/file_util.h" #include "common/hex_util.h" #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" +#include "core/file_sys/registered_cache.h" +#include "core/hle/service/filesystem/filesystem.h" #include "core/loader/loader.h" #include "core/settings.h" namespace Core::Crypto { +constexpr u64 CURRENT_CRYPTO_REVISION = 0x5; + +using namespace Common; + +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{}; @@ -37,6 +70,77 @@ Key128 GenerateKeyEncryptionKey(Key128 source, Key128 master, Key128 kek_seed, K return out; } +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); + sbk_cipher.Transcode(source.data(), source.size(), source.data(), Op::Decrypt); + 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", @@ -71,23 +175,24 @@ boost::optional<Key128> DeriveSDSeed() { return seed; } -Loader::ResultStatus DeriveSDKeys(std::array<Key256, 2>& sd_keys, const KeyManager& keys) { - if (!keys.HasKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::SDKEK))) +Loader::ResultStatus DeriveSDKeys(std::array<Key256, 2>& sd_keys, KeyManager& keys) { + if (!keys.HasKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::SDKek))) return Loader::ResultStatus::ErrorMissingSDKEKSource; - if (!keys.HasKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::AESKEKGeneration))) + if (!keys.HasKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::AESKekGeneration))) return Loader::ResultStatus::ErrorMissingAESKEKGenerationSource; if (!keys.HasKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::AESKeyGeneration))) return Loader::ResultStatus::ErrorMissingAESKeyGenerationSource; const auto sd_kek_source = - keys.GetKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::SDKEK)); + keys.GetKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::SDKek)); const auto aes_kek_gen = - keys.GetKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::AESKEKGeneration)); + keys.GetKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::AESKekGeneration)); const auto aes_key_gen = keys.GetKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::AESKeyGeneration)); const auto master_00 = keys.GetKey(S128KeyType::Master); const auto sd_kek = GenerateKeyEncryptionKey(sd_kek_source, master_00, aes_kek_gen, aes_key_gen); + keys.SetKey(S128KeyType::SDKek, sd_kek); if (!keys.HasKey(S128KeyType::SDSeed)) return Loader::ResultStatus::ErrorMissingSDSeed; @@ -118,9 +223,141 @@ Loader::ResultStatus DeriveSDKeys(std::array<Key256, 2>& sd_keys, const KeyManag return source; ///< Return unaltered source to satisfy output requirement. }); + keys.SetKey(S256KeyType::SDKey, sd_keys[0], static_cast<u64>(SDKeyType::Save)); + keys.SetKey(S256KeyType::SDKey, sd_keys[1], static_cast<u64>(SDKeyType::NCA)); + return Loader::ResultStatus::Success; } +std::vector<TicketRaw> GetTicketblob(const FileUtil::IOFile& ticket_save) { + if (!ticket_save.IsOpen()) + return {}; + + std::vector<u8> buffer(ticket_save.GetSize()); + ticket_save.ReadBytes(buffer.data(), buffer.size()); + + std::vector<TicketRaw> out; + u32 magic{}; + 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) { + out.emplace_back(); + auto& next = out.back(); + std::memcpy(&next, buffer.data() + offset, sizeof(TicketRaw)); + offset += next.size(); + } + } + + return out; +} + +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{}; + std::transform(lhs.begin(), lhs.end(), rhs.begin(), out.begin(), std::bit_xor<>()); + return out; +} + +template <size_t target_size, size_t in_size> +static std::array<u8, target_size> MGF1(const std::array<u8, in_size>& seed) { + std::array<u8, in_size + 4> seed_exp{}; + std::memcpy(seed_exp.data(), seed.data(), in_size); + + std::vector<u8> out; + size_t i = 0; + while (out.size() < target_size) { + 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::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; + std::memcpy(&cert_authority, ticket.data() + 0x140, sizeof(cert_authority)); + if (cert_authority == 0) + return boost::none; + if (cert_authority != Common::MakeMagic('R', 'o', 'o', 't')) + LOG_INFO(Crypto, + "Attempting to parse ticket with non-standard certificate authority {:08X}.", + cert_authority); + + 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::make_pair(rights_id, key_temp); + } + + mbedtls_mpi D; // RSA Private Exponent + mbedtls_mpi N; // RSA Modulus + mbedtls_mpi S; // Input + mbedtls_mpi M; // Output + + mbedtls_mpi_init(&D); + mbedtls_mpi_init(&N); + mbedtls_mpi_init(&S); + mbedtls_mpi_init(&M); + + mbedtls_mpi_read_binary(&D, key.decryption_key.data(), key.decryption_key.size()); + mbedtls_mpi_read_binary(&N, key.modulus.data(), key.modulus.size()); + mbedtls_mpi_read_binary(&S, ticket.data() + 0x180, 0x100); + + mbedtls_mpi_exp_mod(&M, &S, &D, &N, nullptr); + + 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::memcpy(m_1.data(), rsa_step.data() + 0x01, m_1.size()); + std::array<u8, 0xDF> m_2; + std::memcpy(m_2.data(), rsa_step.data() + 0x21, m_2.size()); + + if (m_0 != 0) + return boost::none; + + m_1 = m_1 ^ MGF1<0x20>(m_2); + m_2 = m_2 ^ MGF1<0xDF>(m_1); + + const auto offset = FindTicketOffset(m_2); + if (offset == boost::none) + return boost::none; + ASSERT(offset.get() > 0); + + std::memcpy(key_temp.data(), m_2.data() + offset.get(), key_temp.size()); + + return std::make_pair(rights_id, key_temp); +} + KeyManager::KeyManager() { // Initialize keys const std::string hactool_keys_dir = FileUtil::GetHactoolConfigurationPath(); @@ -137,6 +374,15 @@ KeyManager::KeyManager() { AttemptLoadKeyFile(yuzu_keys_dir, hactool_keys_dir, "title.keys", true); AttemptLoadKeyFile(yuzu_keys_dir, yuzu_keys_dir, "title.keys_autogenerated", true); + AttemptLoadKeyFile(yuzu_keys_dir, hactool_keys_dir, "console.keys", false); + AttemptLoadKeyFile(yuzu_keys_dir, yuzu_keys_dir, "console.keys_autogenerated", false); +} + +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, + [](u8 c) { return std::isdigit(c); }); } void KeyManager::LoadFromFile(const std::string& filename, bool is_title_keys) { @@ -158,6 +404,9 @@ void KeyManager::LoadFromFile(const std::string& filename, bool is_title_keys) { out[0].erase(std::remove(out[0].begin(), out[0].end(), ' '), out[0].end()); out[1].erase(std::remove(out[1].begin(), out[1].end(), ' '), out[1].end()); + if (out[0].compare(0, 1, "#") == 0) + continue; + if (is_title_keys) { auto rights_id_raw = Common::HexStringToArray<16>(out[0]); u128 rights_id{}; @@ -174,6 +423,50 @@ void KeyManager::LoadFromFile(const std::string& filename, bool is_title_keys) { const auto index = s256_file_id.at(out[0]); Key256 key = Common::HexStringToArray<32>(out[1]); s256_keys[{index.type, index.field1, index.field2}] = key; + } else if (out[0].compare(0, 8, "keyblob_") == 0 && + out[0].compare(0, 9, "keyblob_k") != 0) { + if (!ValidCryptoRevisionString(out[0], 8, 2)) + continue; + + const auto index = std::stoul(out[0].substr(8, 2), nullptr, 16); + keyblobs[index] = Common::HexStringToArray<0x90>(out[1]); + } else if (out[0].compare(0, 18, "encrypted_keyblob_") == 0) { + if (!ValidCryptoRevisionString(out[0], 18, 2)) + continue; + + 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 : KEYS_VARIABLE_LENGTH) { + if (!ValidCryptoRevisionString(out[0], kv.second.size(), 2)) + continue; + if (out[0].compare(0, kv.second.size(), kv.second) == 0) { + const auto index = + std::stoul(out[0].substr(kv.second.size(), 2), nullptr, 16); + const auto sub = kv.first.second; + if (sub == 0) { + s128_keys[{kv.first.first, index, 0}] = + Common::HexStringToArray<16>(out[1]); + } else { + s128_keys[{kv.first.first, kv.first.second, index}] = + Common::HexStringToArray<16>(out[1]); + } + + break; + } + } + + 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 < kak_names.size(); ++j) { + const auto& match = kak_names[j]; + if (out[0].compare(0, std::strlen(match), match) == 0) { + const auto index = + std::stoul(out[0].substr(std::strlen(match), 2), nullptr, 16); + s128_keys[{S128KeyType::KeyArea, index, j}] = + Common::HexStringToArray<16>(out[1]); + } + } } } } @@ -187,6 +480,28 @@ void KeyManager::AttemptLoadKeyFile(const std::string& dir1, const std::string& LoadFromFile(dir2 + DIR_SEP + filename, title); } +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); + }; + + if (check_key_existence(S256KeyType::Header)) + return true; + + for (size_t i = 0; i < CURRENT_CRYPTO_REVISION; ++i) { + if (check_key_existence(S128KeyType::Master, i) || + check_key_existence(S128KeyType::KeyArea, i, + static_cast<u64>(KeyAreaKeyType::Application)) || + check_key_existence(S128KeyType::KeyArea, i, static_cast<u64>(KeyAreaKeyType::Ocean)) || + check_key_existence(S128KeyType::KeyArea, i, + static_cast<u64>(KeyAreaKeyType::System)) || + check_key_existence(S128KeyType::Titlekek, i)) + return true; + } + + return false; +} + bool KeyManager::HasKey(S128KeyType id, u64 field1, u64 field2) const { return s128_keys.find({id, field1, field2}) != s128_keys.end(); } @@ -207,13 +522,30 @@ Key256 KeyManager::GetKey(S256KeyType id, u64 field1, u64 field2) const { return s256_keys.at({id, field1, field2}); } -template <std::size_t Size> -void KeyManager::WriteKeyToFile(bool title_key, std::string_view keyname, +Key256 KeyManager::GetBISKey(u8 partition_id) const { + Key256 out{}; + + for (const auto& bis_type : {BISKeyType::Crypto, BISKeyType::Tweak}) { + if (HasKey(S128KeyType::BIS, partition_id, static_cast<u64>(bis_type))) { + std::memcpy( + out.data() + sizeof(Key128) * static_cast<u64>(bis_type), + s128_keys.at({S128KeyType::BIS, partition_id, static_cast<u64>(bis_type)}).data(), + sizeof(Key128)); + } + } + + return out; +} + +template <size_t Size> +void KeyManager::WriteKeyToFile(KeyCategory category, std::string_view keyname, const std::array<u8, Size>& key) { const std::string yuzu_keys_dir = FileUtil::GetUserPath(FileUtil::UserPath::KeysDir); std::string filename = "title.keys_autogenerated"; - if (!title_key) + if (category == KeyCategory::Standard) filename = dev_mode ? "dev.keys_autogenerated" : "prod.keys_autogenerated"; + else if (category == KeyCategory::Console) + filename = "console.keys_autogenerated"; const auto add_info_text = !FileUtil::Exists(yuzu_keys_dir + DIR_SEP + filename); FileUtil::CreateFullPath(yuzu_keys_dir + DIR_SEP + filename); std::ofstream file(yuzu_keys_dir + DIR_SEP + filename, std::ios::app); @@ -227,7 +559,7 @@ void KeyManager::WriteKeyToFile(bool title_key, std::string_view keyname, } file << fmt::format("\n{} = {}", keyname, Common::HexArrayToString(key)); - AttemptLoadKeyFile(yuzu_keys_dir, yuzu_keys_dir, filename, title_key); + AttemptLoadKeyFile(yuzu_keys_dir, yuzu_keys_dir, filename, category == KeyCategory::Title); } void KeyManager::SetKey(S128KeyType id, Key128 key, u64 field1, u64 field2) { @@ -237,8 +569,15 @@ void KeyManager::SetKey(S128KeyType id, Key128 key, u64 field1, u64 field2) { Key128 rights_id; std::memcpy(rights_id.data(), &field2, sizeof(u64)); std::memcpy(rights_id.data() + sizeof(u64), &field1, sizeof(u64)); - WriteKeyToFile(true, Common::HexArrayToString(rights_id), key); + WriteKeyToFile(KeyCategory::Title, Common::HexArrayToString(rights_id), key); } + + auto category = KeyCategory::Standard; + if (id == S128KeyType::Keyblob || id == S128KeyType::KeyblobMAC || id == S128KeyType::TSEC || + id == S128KeyType::SecureBoot || id == S128KeyType::SDSeed || id == S128KeyType::BIS) { + category = KeyCategory::Console; + } + const auto iter2 = std::find_if( s128_file_id.begin(), s128_file_id.end(), [&id, &field1, &field2](const std::pair<std::string, KeyIndex<S128KeyType>> elem) { @@ -246,7 +585,30 @@ void KeyManager::SetKey(S128KeyType id, Key128 key, u64 field1, u64 field2) { std::tie(id, field1, field2); }); if (iter2 != s128_file_id.end()) - WriteKeyToFile(false, iter2->first, key); + WriteKeyToFile(category, iter2->first, key); + + // Variable cases + if (id == S128KeyType::KeyArea) { + 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); + } else if (id == S128KeyType::Package1) { + WriteKeyToFile(category, fmt::format("package1_key_{:02X}", field1), key); + } else if (id == S128KeyType::Package2) { + WriteKeyToFile(category, fmt::format("package2_key_{:02X}", field1), key); + } else if (id == S128KeyType::Titlekek) { + WriteKeyToFile(category, fmt::format("titlekek_{:02X}", field1), key); + } else if (id == S128KeyType::Keyblob) { + WriteKeyToFile(category, fmt::format("keyblob_key_{:02X}", field1), key); + } else if (id == S128KeyType::KeyblobMAC) { + WriteKeyToFile(category, fmt::format("keyblob_mac_key_{:02X}", field1), key); + } else if (id == S128KeyType::Source && field1 == static_cast<u64>(SourceKeyType::Keyblob)) { + WriteKeyToFile(category, fmt::format("keyblob_key_source_{:02X}", field2), key); + } + s128_keys[{id, field1, field2}] = key; } @@ -260,7 +622,7 @@ void KeyManager::SetKey(S256KeyType id, Key256 key, u64 field1, u64 field2) { std::tie(id, field1, field2); }); if (iter != s256_file_id.end()) - WriteKeyToFile(false, iter->first, key); + WriteKeyToFile(KeyCategory::Standard, iter->first, key); s256_keys[{id, field1, field2}] = key; } @@ -290,59 +652,388 @@ void KeyManager::DeriveSDSeedLazy() { SetKey(S128KeyType::SDSeed, res.get()); } +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(), + key.size() * 8, source, size, out.data()); + return out; +} + +void KeyManager::DeriveBase() { + if (!BaseDeriveNecessary()) + return; + + if (!HasKey(S128KeyType::SecureBoot) || !HasKey(S128KeyType::TSEC)) + return; + + const auto has_bis = [this](u64 id) { + return HasKey(S128KeyType::BIS, id, static_cast<u64>(BISKeyType::Crypto)) && + HasKey(S128KeyType::BIS, id, static_cast<u64>(BISKeyType::Tweak)); + }; + + const auto copy_bis = [this](u64 id_from, u64 id_to) { + SetKey(S128KeyType::BIS, + GetKey(S128KeyType::BIS, id_from, static_cast<u64>(BISKeyType::Crypto)), id_to, + static_cast<u64>(BISKeyType::Crypto)); + + SetKey(S128KeyType::BIS, + GetKey(S128KeyType::BIS, id_from, static_cast<u64>(BISKeyType::Tweak)), id_to, + static_cast<u64>(BISKeyType::Tweak)); + }; + + if (has_bis(2) && !has_bis(3)) + copy_bis(2, 3); + else if (has_bis(3) && !has_bis(2)) + copy_bis(3, 2); + + 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>{}) { + revisions.reset(i); + } + } + + if (!revisions.any()) + return; + + const auto sbk = GetKey(S128KeyType::SecureBoot); + const auto tsec = GetKey(S128KeyType::TSEC); + const auto master_source = GetKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::Master)); + + for (size_t i = 0; i < revisions.size(); ++i) { + if (!revisions[i]) + continue; + + // Derive keyblob key + const auto key = DeriveKeyblobKey( + sbk, tsec, GetKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::Keyblob), i)); + + SetKey(S128KeyType::Keyblob, key, i); + + // Derive keyblob MAC key + if (!HasKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::KeyblobMAC))) + continue; + + 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); + if (std::memcmp(cmac.data(), encrypted_keyblobs[i].data(), cmac.size()) != 0) + continue; + + // Decrypt 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; + 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))) { + SetKey(S128KeyType::Master, + DeriveMasterKey(keyblobs[i], GetKey(S128KeyType::Source, + static_cast<u64>(SourceKeyType::Master))), + i); + } + } + + revisions.set(); + for (size_t i = 0; i < revisions.size(); ++i) { + if (!HasKey(S128KeyType::Master, i)) + revisions.reset(i); + } + + if (!revisions.any()) + return; + + for (size_t i = 0; i < revisions.size(); ++i) { + if (!revisions[i]) + continue; + + // Derive general purpose keys + DeriveGeneralPurposeKeys(i); + } + + if (HasKey(S128KeyType::Master, 0) && + HasKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::AESKeyGeneration)) && + HasKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::AESKekGeneration)) && + HasKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::HeaderKek)) && + HasKey(S256KeyType::HeaderSource)) { + const auto header_kek = GenerateKeyEncryptionKey( + GetKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::HeaderKek)), + GetKey(S128KeyType::Master, 0), + GetKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::AESKekGeneration)), + GetKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::AESKeyGeneration))); + SetKey(S128KeyType::HeaderKek, header_kek); + + AESCipher<Key128> header_cipher(header_kek, Mode::ECB); + Key256 out = GetKey(S256KeyType::HeaderSource); + header_cipher.Transcode(out.data(), out.size(), out.data(), Op::Decrypt); + SetKey(S256KeyType::Header, out); + } +} + +void KeyManager::DeriveETicket(PartitionDataManager& data) { + // ETicket keys + const auto es = Service::FileSystem::GetUnionContents()->GetEntry( + 0x0100000000000033, FileSys::ContentRecordType::Program); + + if (es == nullptr) + return; + + const auto exefs = es->GetExeFS(); + if (exefs == nullptr) + return; + + const auto main = exefs->GetFile("main"); + if (main == nullptr) + return; + + const auto bytes = main->ReadAllBytes(); + + 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{}) { + 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{}) { + return; + } + + Key128 rsa_oaep_kek{}; + std::transform(seed3.begin(), seed3.end(), mask0.begin(), rsa_oaep_kek.begin(), + std::bit_xor<>()); + + if (rsa_oaep_kek == Key128{}) + return; + + SetKey(S128KeyType::Source, rsa_oaep_kek, + static_cast<u64>(SourceKeyType::RSAOaepKekGeneration)); + + Key128 temp_kek{}; + Key128 temp_kekek{}; + Key128 eticket_final{}; + + // Derive ETicket RSA Kek + AESCipher<Key128> es_master(GetKey(S128KeyType::Master), Mode::ECB); + es_master.Transcode(rsa_oaep_kek.data(), rsa_oaep_kek.size(), temp_kek.data(), Op::Decrypt); + AESCipher<Key128> es_kekek(temp_kek, Mode::ECB); + es_kekek.Transcode(eticket_kekek.data(), eticket_kekek.size(), temp_kekek.data(), Op::Decrypt); + AESCipher<Key128> es_kek(temp_kekek, Mode::ECB); + es_kek.Transcode(eticket_kek.data(), eticket_kek.size(), eticket_final.data(), Op::Decrypt); + + if (eticket_final == Key128{}) + return; + + SetKey(S128KeyType::ETicketRSAKek, eticket_final); + + // Titlekeys + data.DecryptProdInfo(GetBISKey(0)); + + const auto eticket_extended_kek = data.GetETicketExtendedKek(); + + std::vector<u8> extended_iv(0x10); + std::memcpy(extended_iv.data(), eticket_extended_kek.data(), extended_iv.size()); + std::array<u8, 0x230> extended_dec{}; + AESCipher<Key128> rsa_1(eticket_final, Mode::CTR); + rsa_1.SetIV(extended_iv); + rsa_1.Transcode(eticket_extended_kek.data() + 0x10, eticket_extended_kek.size() - 0x10, + extended_dec.data(), Op::Decrypt); + + RSAKeyPair<2048> rsa_key{}; + std::memcpy(rsa_key.decryption_key.data(), extended_dec.data(), rsa_key.decryption_key.size()); + std::memcpy(rsa_key.modulus.data(), extended_dec.data() + 0x100, rsa_key.modulus.size()); + std::memcpy(rsa_key.exponent.data(), extended_dec.data() + 0x200, rsa_key.exponent.size()); + + const FileUtil::IOFile save1(FileUtil::GetUserPath(FileUtil::UserPath::NANDDir) + + "/system/save/80000000000000e1", + "rb+"); + const FileUtil::IOFile save2(FileUtil::GetUserPath(FileUtil::UserPath::NANDDir) + + "/system/save/80000000000000e2", + "rb+"); + + auto res = GetTicketblob(save1); + const auto res2 = GetTicketblob(save2); + std::copy(res2.begin(), res2.end(), std::back_inserter(res)); + + for (const auto& raw : res) { + const auto pair = ParseTicket(raw, rsa_key); + if (pair == boost::none) + continue; + 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]); + } +} + +void KeyManager::SetKeyWrapped(S128KeyType id, Key128 key, u64 field1, u64 field2) { + if (key == Key128{}) + return; + SetKey(id, key, field1, field2); +} + +void KeyManager::SetKeyWrapped(S256KeyType id, Key256 key, u64 field1, u64 field2) { + if (key == Key256{}) + return; + SetKey(id, key, field1, field2); +} + +void KeyManager::PopulateFromPartitionData(PartitionDataManager& data) { + if (!BaseDeriveNecessary()) + return; + + if (!data.HasBoot0()) + return; + + 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); + WriteKeyToFile<0xB0>(KeyCategory::Console, fmt::format("encrypted_keyblob_{:02X}", i), + encrypted_keyblobs[i]); + } + + SetKeyWrapped(S128KeyType::Source, data.GetPackage2KeySource(), + static_cast<u64>(SourceKeyType::Package2)); + SetKeyWrapped(S128KeyType::Source, data.GetAESKekGenerationSource(), + static_cast<u64>(SourceKeyType::AESKekGeneration)); + SetKeyWrapped(S128KeyType::Source, data.GetTitlekekSource(), + static_cast<u64>(SourceKeyType::Titlekek)); + SetKeyWrapped(S128KeyType::Source, data.GetMasterKeySource(), + static_cast<u64>(SourceKeyType::Master)); + SetKeyWrapped(S128KeyType::Source, data.GetKeyblobMACKeySource(), + static_cast<u64>(SourceKeyType::KeyblobMAC)); + + for (size_t i = 0; i < PartitionDataManager::MAX_KEYBLOB_SOURCE_HASH; ++i) { + SetKeyWrapped(S128KeyType::Source, data.GetKeyblobKeySource(i), + static_cast<u64>(SourceKeyType::Keyblob), i); + } + + if (data.HasFuses()) + SetKeyWrapped(S128KeyType::SecureBoot, data.GetSecureBootKey()); + + DeriveBase(); + + Key128 latest_master{}; + 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 < masters.size(); ++i) { + if (masters[i] != Key128{} && !HasKey(S128KeyType::Master, i)) + SetKey(S128KeyType::Master, masters[i], i); + } + + DeriveBase(); + + if (!data.HasPackage2()) + return; + + std::array<Key128, 0x20> package2_keys{}; + for (size_t i = 0; i < package2_keys.size(); ++i) { + if (HasKey(S128KeyType::Package2, i)) + package2_keys[i] = GetKey(S128KeyType::Package2, i); + } + data.DecryptPackage2(package2_keys, Package2Type::NormalMain); + + SetKeyWrapped(S128KeyType::Source, data.GetKeyAreaKeyApplicationSource(), + static_cast<u64>(SourceKeyType::KeyAreaKey), + static_cast<u64>(KeyAreaKeyType::Application)); + SetKeyWrapped(S128KeyType::Source, data.GetKeyAreaKeyOceanSource(), + static_cast<u64>(SourceKeyType::KeyAreaKey), + static_cast<u64>(KeyAreaKeyType::Ocean)); + SetKeyWrapped(S128KeyType::Source, data.GetKeyAreaKeySystemSource(), + static_cast<u64>(SourceKeyType::KeyAreaKey), + static_cast<u64>(KeyAreaKeyType::System)); + SetKeyWrapped(S128KeyType::Source, data.GetSDKekSource(), + static_cast<u64>(SourceKeyType::SDKek)); + SetKeyWrapped(S256KeyType::SDKeySource, data.GetSDSaveKeySource(), + static_cast<u64>(SDKeyType::Save)); + SetKeyWrapped(S256KeyType::SDKeySource, data.GetSDNCAKeySource(), + static_cast<u64>(SDKeyType::NCA)); + SetKeyWrapped(S128KeyType::Source, data.GetHeaderKekSource(), + static_cast<u64>(SourceKeyType::HeaderKek)); + SetKeyWrapped(S256KeyType::HeaderSource, data.GetHeaderKeySource()); + SetKeyWrapped(S128KeyType::Source, data.GetAESKeyGenerationSource(), + static_cast<u64>(SourceKeyType::AESKeyGeneration)); + + DeriveBase(); +} + const boost::container::flat_map<std::string, KeyIndex<S128KeyType>> KeyManager::s128_file_id = { - {"master_key_00", {S128KeyType::Master, 0, 0}}, - {"master_key_01", {S128KeyType::Master, 1, 0}}, - {"master_key_02", {S128KeyType::Master, 2, 0}}, - {"master_key_03", {S128KeyType::Master, 3, 0}}, - {"master_key_04", {S128KeyType::Master, 4, 0}}, - {"package1_key_00", {S128KeyType::Package1, 0, 0}}, - {"package1_key_01", {S128KeyType::Package1, 1, 0}}, - {"package1_key_02", {S128KeyType::Package1, 2, 0}}, - {"package1_key_03", {S128KeyType::Package1, 3, 0}}, - {"package1_key_04", {S128KeyType::Package1, 4, 0}}, - {"package2_key_00", {S128KeyType::Package2, 0, 0}}, - {"package2_key_01", {S128KeyType::Package2, 1, 0}}, - {"package2_key_02", {S128KeyType::Package2, 2, 0}}, - {"package2_key_03", {S128KeyType::Package2, 3, 0}}, - {"package2_key_04", {S128KeyType::Package2, 4, 0}}, - {"titlekek_00", {S128KeyType::Titlekek, 0, 0}}, - {"titlekek_01", {S128KeyType::Titlekek, 1, 0}}, - {"titlekek_02", {S128KeyType::Titlekek, 2, 0}}, - {"titlekek_03", {S128KeyType::Titlekek, 3, 0}}, - {"titlekek_04", {S128KeyType::Titlekek, 4, 0}}, {"eticket_rsa_kek", {S128KeyType::ETicketRSAKek, 0, 0}}, - {"key_area_key_application_00", - {S128KeyType::KeyArea, 0, static_cast<u64>(KeyAreaKeyType::Application)}}, - {"key_area_key_application_01", - {S128KeyType::KeyArea, 1, static_cast<u64>(KeyAreaKeyType::Application)}}, - {"key_area_key_application_02", - {S128KeyType::KeyArea, 2, static_cast<u64>(KeyAreaKeyType::Application)}}, - {"key_area_key_application_03", - {S128KeyType::KeyArea, 3, static_cast<u64>(KeyAreaKeyType::Application)}}, - {"key_area_key_application_04", - {S128KeyType::KeyArea, 4, static_cast<u64>(KeyAreaKeyType::Application)}}, - {"key_area_key_ocean_00", {S128KeyType::KeyArea, 0, static_cast<u64>(KeyAreaKeyType::Ocean)}}, - {"key_area_key_ocean_01", {S128KeyType::KeyArea, 1, static_cast<u64>(KeyAreaKeyType::Ocean)}}, - {"key_area_key_ocean_02", {S128KeyType::KeyArea, 2, static_cast<u64>(KeyAreaKeyType::Ocean)}}, - {"key_area_key_ocean_03", {S128KeyType::KeyArea, 3, static_cast<u64>(KeyAreaKeyType::Ocean)}}, - {"key_area_key_ocean_04", {S128KeyType::KeyArea, 4, static_cast<u64>(KeyAreaKeyType::Ocean)}}, - {"key_area_key_system_00", {S128KeyType::KeyArea, 0, static_cast<u64>(KeyAreaKeyType::System)}}, - {"key_area_key_system_01", {S128KeyType::KeyArea, 1, static_cast<u64>(KeyAreaKeyType::System)}}, - {"key_area_key_system_02", {S128KeyType::KeyArea, 2, static_cast<u64>(KeyAreaKeyType::System)}}, - {"key_area_key_system_03", {S128KeyType::KeyArea, 3, static_cast<u64>(KeyAreaKeyType::System)}}, - {"key_area_key_system_04", {S128KeyType::KeyArea, 4, static_cast<u64>(KeyAreaKeyType::System)}}, - {"sd_card_kek_source", {S128KeyType::Source, static_cast<u64>(SourceKeyType::SDKEK), 0}}, + {"eticket_rsa_kek_source", + {S128KeyType::Source, static_cast<u64>(SourceKeyType::ETicketKek), 0}}, + {"eticket_rsa_kekek_source", + {S128KeyType::Source, static_cast<u64>(SourceKeyType::ETicketKekek), 0}}, + {"rsa_kek_mask_0", {S128KeyType::RSAKek, static_cast<u64>(RSAKekType::Mask0), 0}}, + {"rsa_kek_seed_3", {S128KeyType::RSAKek, static_cast<u64>(RSAKekType::Seed3), 0}}, + {"rsa_oaep_kek_generation_source", + {S128KeyType::Source, static_cast<u64>(SourceKeyType::RSAOaepKekGeneration), 0}}, + {"sd_card_kek_source", {S128KeyType::Source, static_cast<u64>(SourceKeyType::SDKek), 0}}, {"aes_kek_generation_source", - {S128KeyType::Source, static_cast<u64>(SourceKeyType::AESKEKGeneration), 0}}, + {S128KeyType::Source, static_cast<u64>(SourceKeyType::AESKekGeneration), 0}}, {"aes_key_generation_source", {S128KeyType::Source, static_cast<u64>(SourceKeyType::AESKeyGeneration), 0}}, + {"package2_key_source", {S128KeyType::Source, static_cast<u64>(SourceKeyType::Package2), 0}}, + {"master_key_source", {S128KeyType::Source, static_cast<u64>(SourceKeyType::Master), 0}}, + {"header_kek_source", {S128KeyType::Source, static_cast<u64>(SourceKeyType::HeaderKek), 0}}, + {"key_area_key_application_source", + {S128KeyType::Source, static_cast<u64>(SourceKeyType::KeyAreaKey), + static_cast<u64>(KeyAreaKeyType::Application)}}, + {"key_area_key_ocean_source", + {S128KeyType::Source, static_cast<u64>(SourceKeyType::KeyAreaKey), + static_cast<u64>(KeyAreaKeyType::Ocean)}}, + {"key_area_key_system_source", + {S128KeyType::Source, static_cast<u64>(SourceKeyType::KeyAreaKey), + static_cast<u64>(KeyAreaKeyType::System)}}, + {"titlekek_source", {S128KeyType::Source, static_cast<u64>(SourceKeyType::Titlekek), 0}}, + {"keyblob_mac_key_source", {S128KeyType::Source, static_cast<u64>(SourceKeyType::KeyblobMAC)}}, + {"tsec_key", {S128KeyType::TSEC, 0, 0}}, + {"secure_boot_key", {S128KeyType::SecureBoot, 0, 0}}, {"sd_seed", {S128KeyType::SDSeed, 0, 0}}, + {"bis_key_0_crypt", {S128KeyType::BIS, 0, static_cast<u64>(BISKeyType::Crypto)}}, + {"bis_key_0_tweak", {S128KeyType::BIS, 0, static_cast<u64>(BISKeyType::Tweak)}}, + {"bis_key_1_crypt", {S128KeyType::BIS, 1, static_cast<u64>(BISKeyType::Crypto)}}, + {"bis_key_1_tweak", {S128KeyType::BIS, 1, static_cast<u64>(BISKeyType::Tweak)}}, + {"bis_key_2_crypt", {S128KeyType::BIS, 2, static_cast<u64>(BISKeyType::Crypto)}}, + {"bis_key_2_tweak", {S128KeyType::BIS, 2, static_cast<u64>(BISKeyType::Tweak)}}, + {"bis_key_3_crypt", {S128KeyType::BIS, 3, static_cast<u64>(BISKeyType::Crypto)}}, + {"bis_key_3_tweak", {S128KeyType::BIS, 3, static_cast<u64>(BISKeyType::Tweak)}}, + {"header_kek", {S128KeyType::HeaderKek, 0, 0}}, + {"sd_card_kek", {S128KeyType::SDKek, 0, 0}}, }; const boost::container::flat_map<std::string, KeyIndex<S256KeyType>> KeyManager::s256_file_id = { {"header_key", {S256KeyType::Header, 0, 0}}, {"sd_card_save_key_source", {S256KeyType::SDKeySource, static_cast<u64>(SDKeyType::Save), 0}}, {"sd_card_nca_key_source", {S256KeyType::SDKeySource, static_cast<u64>(SDKeyType::NCA), 0}}, + {"header_key_source", {S256KeyType::HeaderSource, 0, 0}}, + {"sd_card_save_key", {S256KeyType::SDKey, static_cast<u64>(SDKeyType::Save), 0}}, + {"sd_card_nca_key", {S256KeyType::SDKey, static_cast<u64>(SDKeyType::NCA), 0}}, }; } // namespace Core::Crypto |