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Merge pull request #1486 from lioncash/file
key_manager/partition_data_manager: Minor changes
This commit is contained in:
bunnei
GitHub
commit
b3cca34f50
@ -98,7 +98,7 @@ std::array<u8, 144> DecryptKeyblob(const std::array<u8, 176>& encrypted_keyblob,
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return keyblob;
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}
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void KeyManager::DeriveGeneralPurposeKeys(u8 crypto_revision) {
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void KeyManager::DeriveGeneralPurposeKeys(std::size_t crypto_revision) {
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const auto kek_generation_source =
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GetKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::AESKekGeneration));
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const auto key_generation_source =
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@ -147,31 +147,38 @@ boost::optional<Key128> DeriveSDSeed() {
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"rb+");
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if (!save_43.IsOpen())
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return boost::none;
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const FileUtil::IOFile sd_private(
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FileUtil::GetUserPath(FileUtil::UserPath::SDMCDir) + "/Nintendo/Contents/private", "rb+");
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if (!sd_private.IsOpen())
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return boost::none;
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sd_private.Seek(0, SEEK_SET);
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std::array<u8, 0x10> private_seed{};
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if (sd_private.ReadBytes(private_seed.data(), private_seed.size()) != 0x10)
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if (sd_private.ReadBytes(private_seed.data(), private_seed.size()) != private_seed.size()) {
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return boost::none;
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}
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std::array<u8, 0x10> buffer{};
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std::size_t offset = 0;
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for (; offset + 0x10 < save_43.GetSize(); ++offset) {
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save_43.Seek(offset, SEEK_SET);
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save_43.ReadBytes(buffer.data(), buffer.size());
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if (buffer == private_seed)
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break;
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if (!save_43.Seek(offset, SEEK_SET)) {
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return boost::none;
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}
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if (offset + 0x10 >= save_43.GetSize())
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save_43.ReadBytes(buffer.data(), buffer.size());
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if (buffer == private_seed) {
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break;
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}
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}
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if (!save_43.Seek(offset + 0x10, SEEK_SET)) {
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return boost::none;
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}
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Key128 seed{};
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save_43.Seek(offset + 0x10, SEEK_SET);
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save_43.ReadBytes(seed.data(), seed.size());
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if (save_43.ReadBytes(seed.data(), seed.size()) != seed.size()) {
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return boost::none;
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}
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return seed;
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}
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@ -234,7 +241,9 @@ std::vector<TicketRaw> GetTicketblob(const FileUtil::IOFile& ticket_save) {
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return {};
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std::vector<u8> buffer(ticket_save.GetSize());
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ticket_save.ReadBytes(buffer.data(), buffer.size());
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if (ticket_save.ReadBytes(buffer.data(), buffer.size()) != buffer.size()) {
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return {};
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}
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std::vector<TicketRaw> out;
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u32 magic{};
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@ -261,6 +270,9 @@ static std::array<u8, size> operator^(const std::array<u8, size>& lhs,
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template <size_t target_size, size_t in_size>
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static std::array<u8, target_size> MGF1(const std::array<u8, in_size>& seed) {
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// Avoids truncation overflow within the loop below.
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static_assert(target_size <= 0xFF);
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std::array<u8, in_size + 4> seed_exp{};
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std::memcpy(seed_exp.data(), seed.data(), in_size);
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@ -268,7 +280,7 @@ static std::array<u8, target_size> MGF1(const std::array<u8, in_size>& seed) {
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size_t i = 0;
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while (out.size() < target_size) {
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out.resize(out.size() + 0x20);
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seed_exp[in_size + 3] = i;
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seed_exp[in_size + 3] = static_cast<u8>(i);
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mbedtls_sha256(seed_exp.data(), seed_exp.size(), out.data() + out.size() - 0x20, 0);
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++i;
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}
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@ -299,10 +311,11 @@ boost::optional<std::pair<Key128, Key128>> ParseTicket(const TicketRaw& ticket,
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std::memcpy(&cert_authority, ticket.data() + 0x140, sizeof(cert_authority));
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if (cert_authority == 0)
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return boost::none;
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if (cert_authority != Common::MakeMagic('R', 'o', 'o', 't'))
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if (cert_authority != Common::MakeMagic('R', 'o', 'o', 't')) {
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LOG_INFO(Crypto,
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"Attempting to parse ticket with non-standard certificate authority {:08X}.",
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cert_authority);
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}
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Key128 rights_id;
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std::memcpy(rights_id.data(), ticket.data() + 0x2A0, sizeof(Key128));
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@ -871,9 +884,9 @@ void KeyManager::DeriveETicket(PartitionDataManager& data) {
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"/system/save/80000000000000e2",
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"rb+");
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const auto blob2 = GetTicketblob(save2);
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auto res = GetTicketblob(save1);
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const auto res2 = GetTicketblob(save2);
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std::copy(res2.begin(), res2.end(), std::back_inserter(res));
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res.insert(res.end(), blob2.begin(), blob2.end());
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for (const auto& raw : res) {
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const auto pair = ParseTicket(raw, rsa_key);
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@ -175,7 +175,7 @@ private:
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void WriteKeyToFile(KeyCategory category, std::string_view keyname,
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const std::array<u8, Size>& key);
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void DeriveGeneralPurposeKeys(u8 crypto_revision);
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void DeriveGeneralPurposeKeys(std::size_t crypto_revision);
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void SetKeyWrapped(S128KeyType id, Key128 key, u64 field1 = 0, u64 field2 = 0);
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void SetKeyWrapped(S256KeyType id, Key256 key, u64 field1 = 0, u64 field2 = 0);
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@ -11,7 +11,6 @@
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#include <array>
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#include <cctype>
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#include <cstring>
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#include <boost/optional/optional.hpp>
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#include <mbedtls/sha256.h>
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#include "common/assert.h"
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#include "common/common_funcs.h"
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@ -19,7 +18,7 @@
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#include "common/hex_util.h"
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#include "common/logging/log.h"
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#include "common/string_util.h"
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#include "core/crypto/ctr_encryption_layer.h"
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#include "common/swap.h"
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#include "core/crypto/key_manager.h"
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#include "core/crypto/partition_data_manager.h"
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#include "core/crypto/xts_encryption_layer.h"
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@ -302,7 +301,7 @@ FileSys::VirtualFile FindFileInDirWithNames(const FileSys::VirtualDir& dir,
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return nullptr;
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}
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PartitionDataManager::PartitionDataManager(FileSys::VirtualDir sysdata_dir)
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PartitionDataManager::PartitionDataManager(const FileSys::VirtualDir& sysdata_dir)
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: boot0(FindFileInDirWithNames(sysdata_dir, "BOOT0")),
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fuses(FindFileInDirWithNames(sysdata_dir, "fuse")),
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kfuses(FindFileInDirWithNames(sysdata_dir, "kfuse")),
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@ -314,13 +313,14 @@ PartitionDataManager::PartitionDataManager(FileSys::VirtualDir sysdata_dir)
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FindFileInDirWithNames(sysdata_dir, "BCPKG2-5-Repair-Main"),
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FindFileInDirWithNames(sysdata_dir, "BCPKG2-6-Repair-Sub"),
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}),
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prodinfo(FindFileInDirWithNames(sysdata_dir, "PRODINFO")),
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secure_monitor(FindFileInDirWithNames(sysdata_dir, "secmon")),
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package1_decrypted(FindFileInDirWithNames(sysdata_dir, "pkg1_decr")),
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secure_monitor_bytes(secure_monitor == nullptr ? std::vector<u8>{}
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: secure_monitor->ReadAllBytes()),
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package1_decrypted_bytes(package1_decrypted == nullptr ? std::vector<u8>{}
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: package1_decrypted->ReadAllBytes()),
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prodinfo(FindFileInDirWithNames(sysdata_dir, "PRODINFO")) {}
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: package1_decrypted->ReadAllBytes()) {
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}
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PartitionDataManager::~PartitionDataManager() = default;
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@ -332,18 +332,19 @@ FileSys::VirtualFile PartitionDataManager::GetBoot0Raw() const {
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return boot0;
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}
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std::array<u8, 176> PartitionDataManager::GetEncryptedKeyblob(u8 index) const {
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if (HasBoot0() && index < 32)
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PartitionDataManager::EncryptedKeyBlob PartitionDataManager::GetEncryptedKeyblob(
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std::size_t index) const {
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if (HasBoot0() && index < NUM_ENCRYPTED_KEYBLOBS)
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return GetEncryptedKeyblobs()[index];
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return {};
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}
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std::array<std::array<u8, 176>, 32> PartitionDataManager::GetEncryptedKeyblobs() const {
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PartitionDataManager::EncryptedKeyBlobs PartitionDataManager::GetEncryptedKeyblobs() const {
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if (!HasBoot0())
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return {};
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std::array<std::array<u8, 176>, 32> out{};
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for (size_t i = 0; i < 0x20; ++i)
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EncryptedKeyBlobs out{};
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for (size_t i = 0; i < out.size(); ++i)
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boot0->Read(out[i].data(), out[i].size(), 0x180000 + i * 0x200);
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return out;
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}
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@ -389,7 +390,7 @@ std::array<u8, 16> PartitionDataManager::GetKeyblobMACKeySource() const {
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return FindKeyFromHex(package1_decrypted_bytes, source_hashes[0]);
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}
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std::array<u8, 16> PartitionDataManager::GetKeyblobKeySource(u8 revision) const {
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std::array<u8, 16> PartitionDataManager::GetKeyblobKeySource(std::size_t revision) const {
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if (keyblob_source_hashes[revision] == SHA256Hash{}) {
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LOG_WARNING(Crypto,
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"No keyblob source hash for crypto revision {:02X}! Cannot derive keys...",
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@ -446,7 +447,7 @@ bool AttemptDecrypt(const std::array<u8, 16>& key, Package2Header& header) {
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return false;
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}
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void PartitionDataManager::DecryptPackage2(std::array<std::array<u8, 16>, 0x20> package2_keys,
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void PartitionDataManager::DecryptPackage2(const std::array<Key128, 0x20>& package2_keys,
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Package2Type type) {
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FileSys::VirtualFile file = std::make_shared<FileSys::OffsetVfsFile>(
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package2[static_cast<size_t>(type)],
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@ -456,43 +457,38 @@ void PartitionDataManager::DecryptPackage2(std::array<std::array<u8, 16>, 0x20>
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if (file->ReadObject(&header) != sizeof(Package2Header))
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return;
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u8 revision = 0xFF;
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std::size_t revision = 0xFF;
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if (header.magic != Common::MakeMagic('P', 'K', '2', '1')) {
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for (size_t i = 0; i < package2_keys.size(); ++i) {
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if (AttemptDecrypt(package2_keys[i], header))
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for (std::size_t i = 0; i < package2_keys.size(); ++i) {
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if (AttemptDecrypt(package2_keys[i], header)) {
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revision = i;
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}
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}
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}
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if (header.magic != Common::MakeMagic('P', 'K', '2', '1'))
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return;
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const std::vector<u8> s1_iv(header.section_ctr[1].begin(), header.section_ctr[1].end());
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const auto a = std::make_shared<FileSys::OffsetVfsFile>(
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file, header.section_size[1], header.section_size[0] + sizeof(Package2Header));
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auto c = a->ReadAllBytes();
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AESCipher<Key128> cipher(package2_keys[revision], Mode::CTR);
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cipher.SetIV(s1_iv);
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cipher.SetIV({header.section_ctr[1].begin(), header.section_ctr[1].end()});
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cipher.Transcode(c.data(), c.size(), c.data(), Op::Decrypt);
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// package2_decrypted[static_cast<size_t>(type)] = s1;
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INIHeader ini;
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std::memcpy(&ini, c.data(), sizeof(INIHeader));
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if (ini.magic != Common::MakeMagic('I', 'N', 'I', '1'))
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return;
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std::map<u64, KIPHeader> kips{};
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u64 offset = sizeof(INIHeader);
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for (size_t i = 0; i < ini.process_count; ++i) {
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KIPHeader kip;
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std::memcpy(&kip, c.data() + offset, sizeof(KIPHeader));
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if (kip.magic != Common::MakeMagic('K', 'I', 'P', '1'))
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return;
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kips.emplace(offset, kip);
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const auto name =
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Common::StringFromFixedZeroTerminatedBuffer(kip.name.data(), kip.name.size());
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@ -503,33 +499,29 @@ void PartitionDataManager::DecryptPackage2(std::array<std::array<u8, 16>, 0x20>
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continue;
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}
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std::vector<u8> text(kip.sections[0].size_compressed);
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std::vector<u8> rodata(kip.sections[1].size_compressed);
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std::vector<u8> data(kip.sections[2].size_compressed);
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const u64 initial_offset = sizeof(KIPHeader) + offset;
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const auto text_begin = c.cbegin() + initial_offset;
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const auto text_end = text_begin + kip.sections[0].size_compressed;
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const std::vector<u8> text = DecompressBLZ({text_begin, text_end});
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u64 offset_sec = sizeof(KIPHeader) + offset;
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std::memcpy(text.data(), c.data() + offset_sec, text.size());
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offset_sec += text.size();
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std::memcpy(rodata.data(), c.data() + offset_sec, rodata.size());
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offset_sec += rodata.size();
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std::memcpy(data.data(), c.data() + offset_sec, data.size());
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const auto rodata_end = text_end + kip.sections[1].size_compressed;
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const std::vector<u8> rodata = DecompressBLZ({text_end, rodata_end});
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offset += sizeof(KIPHeader) + kip.sections[0].size_compressed +
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kip.sections[1].size_compressed + kip.sections[2].size_compressed;
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const auto data_end = rodata_end + kip.sections[2].size_compressed;
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const std::vector<u8> data = DecompressBLZ({rodata_end, data_end});
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text = DecompressBLZ(text);
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rodata = DecompressBLZ(rodata);
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data = DecompressBLZ(data);
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std::vector<u8> out;
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out.reserve(text.size() + rodata.size() + data.size());
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out.insert(out.end(), text.begin(), text.end());
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out.insert(out.end(), rodata.begin(), rodata.end());
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out.insert(out.end(), data.begin(), data.end());
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std::vector<u8> out(text.size() + rodata.size() + data.size());
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std::memcpy(out.data(), text.data(), text.size());
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std::memcpy(out.data() + text.size(), rodata.data(), rodata.size());
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std::memcpy(out.data() + text.size() + rodata.size(), data.data(), data.size());
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offset += sizeof(KIPHeader) + out.size();
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if (name == "FS")
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package2_fs[static_cast<size_t>(type)] = out;
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package2_fs[static_cast<size_t>(type)] = std::move(out);
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else if (name == "spl")
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package2_spl[static_cast<size_t>(type)] = out;
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package2_spl[static_cast<size_t>(type)] = std::move(out);
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}
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}
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@ -5,9 +5,7 @@
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#pragma once
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#include <vector>
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#include "common/common_funcs.h"
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#include "common/common_types.h"
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#include "common/swap.h"
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#include "core/file_sys/vfs_types.h"
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namespace Core::Crypto {
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@ -24,15 +22,20 @@ enum class Package2Type {
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class PartitionDataManager {
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public:
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static const u8 MAX_KEYBLOB_SOURCE_HASH;
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static constexpr std::size_t NUM_ENCRYPTED_KEYBLOBS = 32;
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static constexpr std::size_t ENCRYPTED_KEYBLOB_SIZE = 0xB0;
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explicit PartitionDataManager(FileSys::VirtualDir sysdata_dir);
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using EncryptedKeyBlob = std::array<u8, ENCRYPTED_KEYBLOB_SIZE>;
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using EncryptedKeyBlobs = std::array<EncryptedKeyBlob, NUM_ENCRYPTED_KEYBLOBS>;
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explicit PartitionDataManager(const FileSys::VirtualDir& sysdata_dir);
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~PartitionDataManager();
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// BOOT0
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bool HasBoot0() const;
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FileSys::VirtualFile GetBoot0Raw() const;
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std::array<u8, 0xB0> GetEncryptedKeyblob(u8 index) const;
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std::array<std::array<u8, 0xB0>, 0x20> GetEncryptedKeyblobs() const;
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EncryptedKeyBlob GetEncryptedKeyblob(std::size_t index) const;
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EncryptedKeyBlobs GetEncryptedKeyblobs() const;
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std::vector<u8> GetSecureMonitor() const;
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std::array<u8, 0x10> GetPackage2KeySource() const;
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std::array<u8, 0x10> GetAESKekGenerationSource() const;
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@ -43,7 +46,7 @@ public:
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std::vector<u8> GetPackage1Decrypted() const;
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std::array<u8, 0x10> GetMasterKeySource() const;
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std::array<u8, 0x10> GetKeyblobMACKeySource() const;
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std::array<u8, 0x10> GetKeyblobKeySource(u8 revision) const;
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std::array<u8, 0x10> GetKeyblobKeySource(std::size_t revision) const;
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// Fuses
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bool HasFuses() const;
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@ -57,7 +60,8 @@ public:
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// Package2
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bool HasPackage2(Package2Type type = Package2Type::NormalMain) const;
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FileSys::VirtualFile GetPackage2Raw(Package2Type type = Package2Type::NormalMain) const;
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void DecryptPackage2(std::array<std::array<u8, 16>, 0x20> package2, Package2Type type);
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void DecryptPackage2(const std::array<std::array<u8, 16>, 0x20>& package2_keys,
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Package2Type type);
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const std::vector<u8>& GetPackage2FSDecompressed(
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Package2Type type = Package2Type::NormalMain) const;
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std::array<u8, 0x10> GetKeyAreaKeyApplicationSource(
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