10 files changed, 1663 insertions, 74 deletions

diff --git a/src/core/CMakeLists.txt b/src/core/CMakeLists.txt
index e4a676e91..4fddaafd1 100644
--- a/src/core/CMakeLists.txt
+++ b/src/core/CMakeLists.txt
@@ -18,6 +18,8 @@ add_library(core STATIC
     crypto/encryption_layer.h
     crypto/key_manager.cpp
     crypto/key_manager.h
+    crypto/partition_data_manager.cpp
+    crypto/partition_data_manager.h
     crypto/ctr_encryption_layer.cpp
     crypto/ctr_encryption_layer.h
     crypto/xts_encryption_layer.cpp
@@ -70,6 +72,7 @@ add_library(core STATIC
     file_sys/vfs_real.cpp
     file_sys/vfs_real.h
     file_sys/vfs_static.h
+    file_sys/vfs_types.h
     file_sys/vfs_vector.cpp
     file_sys/vfs_vector.h
     file_sys/xts_archive.cpp
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
diff --git a/src/core/crypto/key_manager.h b/src/core/crypto/key_manager.h
index 978eec8dc..a41abbdfc 100644
--- a/src/core/crypto/key_manager.h
+++ b/src/core/crypto/key_manager.h
@@ -5,11 +5,18 @@
 #pragma once
 
 #include <array>
+#include <map>
 #include <string>
 #include <boost/container/flat_map.hpp>
 #include <boost/optional.hpp>
 #include <fmt/format.h>
 #include "common/common_types.h"
+#include "core/crypto/partition_data_manager.h"
+#include "core/file_sys/vfs_types.h"
+
+namespace FileUtil {
+class IOFile;
+}
 
 namespace Loader {
 enum class ResultStatus : u16;
@@ -22,13 +29,30 @@ constexpr u64 TICKET_FILE_TITLEKEY_OFFSET = 0x180;
 using Key128 = std::array<u8, 0x10>;
 using Key256 = std::array<u8, 0x20>;
 using SHA256Hash = std::array<u8, 0x20>;
+using TicketRaw = std::array<u8, 0x400>;
 
 static_assert(sizeof(Key128) == 16, "Key128 must be 128 bytes big.");
-static_assert(sizeof(Key256) == 32, "Key128 must be 128 bytes big.");
+static_assert(sizeof(Key256) == 32, "Key256 must be 256 bytes big.");
+
+template <size_t bit_size, size_t byte_size = (bit_size >> 3)>
+struct RSAKeyPair {
+    std::array<u8, byte_size> encryption_key;
+    std::array<u8, byte_size> decryption_key;
+    std::array<u8, byte_size> modulus;
+    std::array<u8, 4> exponent;
+};
+
+enum class KeyCategory : u8 {
+    Standard,
+    Title,
+    Console,
+};
 
 enum class S256KeyType : u64 {
-    Header,      //
-    SDKeySource, // f1=SDKeyType
+    SDKey,        // f1=SDKeyType
+    Header,       //
+    SDKeySource,  // f1=SDKeyType
+    HeaderSource, //
 };
 
 enum class S128KeyType : u64 {
@@ -41,6 +65,14 @@ enum class S128KeyType : u64 {
     SDSeed,        //
     Titlekey,      // f1=rights id LSB f2=rights id MSB
     Source,        // f1=source type, f2= sub id
+    Keyblob,       // f1=crypto revision
+    KeyblobMAC,    // f1=crypto revision
+    TSEC,          //
+    SecureBoot,    //
+    BIS,           // f1=partition (0-3), f2=type {crypt, tweak}
+    HeaderKek,     //
+    SDKek,         //
+    RSAKek,        //
 };
 
 enum class KeyAreaKeyType : u8 {
@@ -50,9 +82,19 @@ enum class KeyAreaKeyType : u8 {
 };
 
 enum class SourceKeyType : u8 {
-    SDKEK,
-    AESKEKGeneration,
-    AESKeyGeneration,
+    SDKek,                //
+    AESKekGeneration,     //
+    AESKeyGeneration,     //
+    RSAOaepKekGeneration, //
+    Master,               //
+    Keyblob,              // f2=crypto revision
+    KeyAreaKey,           // f2=KeyAreaKeyType
+    Titlekek,             //
+    Package2,             //
+    HeaderKek,            //
+    KeyblobMAC,           //
+    ETicketKek,           //
+    ETicketKekek,         //
 };
 
 enum class SDKeyType : u8 {
@@ -60,6 +102,16 @@ enum class SDKeyType : u8 {
     NCA,
 };
 
+enum class BISKeyType : u8 {
+    Crypto,
+    Tweak,
+};
+
+enum class RSAKekType : u8 {
+    Mask0,
+    Seed3,
+};
+
 template <typename KeyType>
 struct KeyIndex {
     KeyType type;
@@ -91,6 +143,8 @@ public:
     Key128 GetKey(S128KeyType id, u64 field1 = 0, u64 field2 = 0) const;
     Key256 GetKey(S256KeyType id, u64 field1 = 0, u64 field2 = 0) const;
 
+    Key256 GetBISKey(u8 partition_id) const;
+
     void SetKey(S128KeyType id, Key128 key, u64 field1 = 0, u64 field2 = 0);
     void SetKey(S256KeyType id, Key256 key, u64 field1 = 0, u64 field2 = 0);
 
@@ -100,23 +154,51 @@ public:
     // 8*43 and the private file to exist.
     void DeriveSDSeedLazy();
 
+    bool BaseDeriveNecessary() const;
+    void DeriveBase();
+    void DeriveETicket(PartitionDataManager& data);
+
+    void PopulateFromPartitionData(PartitionDataManager& data);
+
 private:
-    boost::container::flat_map<KeyIndex<S128KeyType>, Key128> s128_keys;
-    boost::container::flat_map<KeyIndex<S256KeyType>, Key256> s256_keys;
+    std::map<KeyIndex<S128KeyType>, Key128> s128_keys;
+    std::map<KeyIndex<S256KeyType>, Key256> s256_keys;
+
+    std::array<std::array<u8, 0xB0>, 0x20> encrypted_keyblobs{};
+    std::array<std::array<u8, 0x90>, 0x20> keyblobs{};
 
     bool dev_mode;
     void LoadFromFile(const std::string& filename, bool is_title_keys);
     void AttemptLoadKeyFile(const std::string& dir1, const std::string& dir2,
                             const std::string& filename, bool title);
-    template <std::size_t Size>
-    void WriteKeyToFile(bool title_key, std::string_view keyname, const std::array<u8, Size>& key);
+    template <size_t Size>
+    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);
 
     static const boost::container::flat_map<std::string, KeyIndex<S128KeyType>> s128_file_id;
     static const boost::container::flat_map<std::string, KeyIndex<S256KeyType>> s256_file_id;
 };
 
 Key128 GenerateKeyEncryptionKey(Key128 source, Key128 master, Key128 kek_seed, Key128 key_seed);
+Key128 DeriveKeyblobKey(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, const KeyManager& keys);
+Loader::ResultStatus DeriveSDKeys(std::array<Key256, 2>& sd_keys, KeyManager& keys);
+
+std::vector<TicketRaw> GetTicketblob(const FileUtil::IOFile& ticket_save);
+
+// Returns a pair of {rights_id, titlekey}. Fails if the ticket has no certificate authority (offset
+// 0x140-0x144 is zero)
+boost::optional<std::pair<Key128, Key128>> ParseTicket(
+    const TicketRaw& ticket, const RSAKeyPair<2048>& eticket_extended_key);
 
 } // namespace Core::Crypto
diff --git a/src/core/crypto/partition_data_manager.cpp b/src/core/crypto/partition_data_manager.cpp
new file mode 100644
index 000000000..d1c04e98d
--- /dev/null
+++ b/src/core/crypto/partition_data_manager.cpp
@@ -0,0 +1,601 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+// NOTE TO FUTURE MAINTAINERS:
+// When a new version of switch cryptography is released,
+// 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"
+
+using namespace Common;
+
+namespace Core::Crypto {
+
+struct Package2Header {
+    std::array<u8, 0x100> signature;
+    Key128 header_ctr;
+    std::array<Key128, 4> section_ctr;
+    u32_le magic;
+    u32_le base_offset;
+    INSERT_PADDING_BYTES(4);
+    u8 version_max;
+    u8 version_min;
+    INSERT_PADDING_BYTES(2);
+    std::array<u32_le, 4> section_size;
+    std::array<u32_le, 4> section_offset;
+    std::array<SHA256Hash, 4> section_hash;
+};
+static_assert(sizeof(Package2Header) == 0x200, "Package2Header has incorrect size.");
+
+struct INIHeader {
+    u32_le magic;
+    u32_le size;
+    u32_le process_count;
+    INSERT_PADDING_BYTES(4);
+};
+static_assert(sizeof(INIHeader) == 0x10, "INIHeader has incorrect size.");
+
+struct SectionHeader {
+    u32_le offset;
+    u32_le size_decompressed;
+    u32_le size_compressed;
+    u32_le attribute;
+};
+static_assert(sizeof(SectionHeader) == 0x10, "SectionHeader has incorrect size.");
+
+struct KIPHeader {
+    u32_le magic;
+    std::array<char, 12> name;
+    u64_le title_id;
+    u32_le category;
+    u8 priority;
+    u8 core;
+    INSERT_PADDING_BYTES(1);
+    u8 flags;
+    std::array<SectionHeader, 6> sections;
+    std::array<u32, 0x20> capabilities;
+};
+static_assert(sizeof(KIPHeader) == 0x100, "KIPHeader has incorrect size.");
+
+const std::array<SHA256Hash, 0x10> source_hashes{
+    "B24BD293259DBC7AC5D63F88E60C59792498E6FC5443402C7FFE87EE8B61A3F0"_array32, // keyblob_mac_key_source
+    "7944862A3A5C31C6720595EFD302245ABD1B54CCDCF33000557681E65C5664A4"_array32, // master_key_source
+    "21E2DF100FC9E094DB51B47B9B1D6E94ED379DB8B547955BEF8FE08D8DD35603"_array32, // package2_key_source
+    "FC02B9D37B42D7A1452E71444F1F700311D1132E301A83B16062E72A78175085"_array32, // aes_kek_generation_source
+    "FBD10056999EDC7ACDB96098E47E2C3606230270D23281E671F0F389FC5BC585"_array32, // aes_key_generation_source
+    "C48B619827986C7F4E3081D59DB2B460C84312650E9A8E6B458E53E8CBCA4E87"_array32, // titlekek_source
+    "04AD66143C726B2A139FB6B21128B46F56C553B2B3887110304298D8D0092D9E"_array32, // key_area_key_application_source
+    "FD434000C8FF2B26F8E9A9D2D2C12F6BE5773CBB9DC86300E1BD99F8EA33A417"_array32, // key_area_key_ocean_source
+    "1F17B1FD51AD1C2379B58F152CA4912EC2106441E51722F38700D5937A1162F7"_array32, // key_area_key_system_source
+    "6B2ED877C2C52334AC51E59ABFA7EC457F4A7D01E46291E9F2EAA45F011D24B7"_array32, // sd_card_kek_source
+    "D482743563D3EA5DCDC3B74E97C9AC8A342164FA041A1DC80F17F6D31E4BC01C"_array32, // sd_card_save_key_source
+    "2E751CECF7D93A2B957BD5FFCB082FD038CC2853219DD3092C6DAB9838F5A7CC"_array32, // sd_card_nca_key_source
+    "1888CAED5551B3EDE01499E87CE0D86827F80820EFB275921055AA4E2ABDFFC2"_array32, // header_kek_source
+    "8F783E46852DF6BE0BA4E19273C4ADBAEE16380043E1B8C418C4089A8BD64AA6"_array32, // header_key_source
+    "D1757E52F1AE55FA882EC690BC6F954AC46A83DC22F277F8806BD55577C6EED7"_array32, // rsa_kek_seed3
+    "FC02B9D37B42D7A1452E71444F1F700311D1132E301A83B16062E72A78175085"_array32, // rsa_kek_mask0
+};
+
+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
+    "8E9795928E1C4428E1B78F0BE724D7294D6934689C11B190943923B9D5B85903"_array32, // keyblob_key_source_03
+    "95FA33AF95AFF9D9B61D164655B32710ED8D615D46C7D6CC3CC70481B686B402"_array32, // keyblob_key_source_04
+    "3F5BE7B3C8B1ABD8C10B4B703D44766BA08730562C172A4FE0D6B866B3E2DB3E"_array32, // keyblob_key_source_05
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_06
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_07
+
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_08
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_09
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_0A
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_0B
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_0C
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_0D
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_0E
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_0F
+
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_10
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_11
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_12
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_13
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_14
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_15
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_16
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_17
+
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_18
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_19
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_1A
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_1B
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_1C
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_1D
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_1E
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_1F
+};
+
+const std::array<SHA256Hash, 0x20> master_key_hashes{
+    "0EE359BE3C864BB0782E1D70A718A0342C551EED28C369754F9C4F691BECF7CA"_array32, // master_key_00
+    "4FE707B7E4ABDAF727C894AAF13B1351BFE2AC90D875F73B2E20FA94B9CC661E"_array32, // master_key_01
+    "79277C0237A2252EC3DFAC1F7C359C2B3D121E9DB15BB9AB4C2B4408D2F3AE09"_array32, // master_key_02
+    "4F36C565D13325F65EE134073C6A578FFCB0008E02D69400836844EAB7432754"_array32, // master_key_03
+    "75FF1D95D26113550EE6FCC20ACB58E97EDEB3A2FF52543ED5AEC63BDCC3DA50"_array32, // master_key_04
+    "EBE2BCD6704673EC0F88A187BB2AD9F1CC82B718C389425941BDC194DC46B0DD"_array32, // master_key_05
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_06
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_07
+
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_08
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_09
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_0A
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_0B
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_0C
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_0D
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_0E
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_0F
+
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_10
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_11
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_12
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_13
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_14
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_15
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_16
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_17
+
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_18
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_19
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_1A
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_1B
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_1C
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_1D
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_1E
+    "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_1F
+};
+
+static std::vector<u8> DecompressBLZ(const std::vector<u8>& in) {
+    const auto data_size = in.size() - 0xC;
+
+    u32 compressed_size{};
+    u32 init_index{};
+    u32 additional_size{};
+    std::memcpy(&compressed_size, in.data() + data_size, sizeof(u32));
+    std::memcpy(&init_index, in.data() + data_size + 0x4, sizeof(u32));
+    std::memcpy(&additional_size, in.data() + data_size + 0x8, sizeof(u32));
+
+    std::vector<u8> out(in.size() + additional_size);
+
+    if (compressed_size == in.size())
+        std::memcpy(out.data(), in.data() + in.size() - compressed_size, compressed_size);
+    else
+        std::memcpy(out.data(), in.data(), compressed_size);
+
+    auto index = in.size() - init_index;
+    auto out_index = out.size();
+
+    while (out_index > 0) {
+        --index;
+        auto control = in[index];
+        for (size_t i = 0; i < 8; ++i) {
+            if ((control & 0x80) > 0) {
+                ASSERT(index >= 2);
+                index -= 2;
+                u64 segment_offset = in[index] | in[index + 1] << 8;
+                u64 segment_size = ((segment_offset >> 12) & 0xF) + 3;
+                segment_offset &= 0xFFF;
+                segment_offset += 3;
+
+                if (out_index < segment_size)
+                    segment_size = out_index;
+
+                ASSERT(out_index >= segment_size);
+
+                out_index -= segment_size;
+
+                for (size_t j = 0; j < segment_size; ++j) {
+                    ASSERT(out_index + j + segment_offset < out.size());
+                    out[out_index + j] = out[out_index + j + segment_offset];
+                }
+            } else {
+                ASSERT(out_index >= 1);
+                --out_index;
+                --index;
+                out[out_index] = in[index];
+            }
+
+            control <<= 1;
+            if (out_index == 0)
+                return out;
+        }
+    }
+
+    return out;
+}
+
+static u8 CalculateMaxKeyblobSourceHash() {
+    for (s8 i = 0x1F; i >= 0; --i) {
+        if (keyblob_source_hashes[i] != SHA256Hash{})
+            return static_cast<u8>(i + 1);
+    }
+
+    return 0;
+}
+
+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,
+                                        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);
+
+        if (temp != hash)
+            continue;
+
+        std::array<u8, key_size> out{};
+        std::memcpy(out.data(), binary.data() + i, key_size);
+        return out;
+    }
+
+    return {};
+}
+
+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 < out.size(); ++k) {
+            if (temp == master_key_hashes[k]) {
+                out[k] = dec_temp;
+                break;
+            }
+        }
+    }
+
+    return out;
+}
+
+FileSys::VirtualFile FindFileInDirWithNames(const FileSys::VirtualDir& dir,
+                                            const std::string& name) {
+    auto upper = name;
+    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);
+    }
+
+    return nullptr;
+}
+
+PartitionDataManager::PartitionDataManager(FileSys::VirtualDir sysdata_dir)
+    : boot0(FindFileInDirWithNames(sysdata_dir, "BOOT0")),
+      fuses(FindFileInDirWithNames(sysdata_dir, "fuse")),
+      kfuses(FindFileInDirWithNames(sysdata_dir, "kfuse")),
+      package2({
+          FindFileInDirWithNames(sysdata_dir, "BCPKG2-1-Normal-Main"),
+          FindFileInDirWithNames(sysdata_dir, "BCPKG2-2-Normal-Sub"),
+          FindFileInDirWithNames(sysdata_dir, "BCPKG2-3-SafeMode-Main"),
+          FindFileInDirWithNames(sysdata_dir, "BCPKG2-4-SafeMode-Sub"),
+          FindFileInDirWithNames(sysdata_dir, "BCPKG2-5-Repair-Main"),
+          FindFileInDirWithNames(sysdata_dir, "BCPKG2-6-Repair-Sub"),
+      }),
+      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;
+}
+
+FileSys::VirtualFile PartitionDataManager::GetBoot0Raw() const {
+    return boot0;
+}
+
+std::array<u8, 176> PartitionDataManager::GetEncryptedKeyblob(u8 index) const {
+    if (HasBoot0() && index < 32)
+        return GetEncryptedKeyblobs()[index];
+    return {};
+}
+
+std::array<std::array<u8, 176>, 32> PartitionDataManager::GetEncryptedKeyblobs() const {
+    if (!HasBoot0())
+        return {};
+
+    std::array<std::array<u8, 176>, 32> out{};
+    for (size_t i = 0; i < 0x20; ++i)
+        boot0->Read(out[i].data(), out[i].size(), 0x180000 + i * 0x200);
+    return out;
+}
+
+std::vector<u8> PartitionDataManager::GetSecureMonitor() const {
+    return secure_monitor_bytes;
+}
+
+std::array<u8, 16> PartitionDataManager::GetPackage2KeySource() const {
+    return FindKeyFromHex(secure_monitor_bytes, source_hashes[2]);
+}
+
+std::array<u8, 16> PartitionDataManager::GetAESKekGenerationSource() const {
+    return FindKeyFromHex(secure_monitor_bytes, source_hashes[3]);
+}
+
+std::array<u8, 16> PartitionDataManager::GetTitlekekSource() const {
+    return FindKeyFromHex(secure_monitor_bytes, source_hashes[5]);
+}
+
+std::array<std::array<u8, 16>, 32> PartitionDataManager::GetTZMasterKeys(
+    std::array<u8, 0x10> master_key) const {
+    return FindEncryptedMasterKeyFromHex(secure_monitor_bytes, master_key);
+}
+
+std::array<u8, 16> PartitionDataManager::GetRSAKekSeed3() const {
+    return FindKeyFromHex(secure_monitor_bytes, source_hashes[14]);
+}
+
+std::array<u8, 16> PartitionDataManager::GetRSAKekMask0() const {
+    return FindKeyFromHex(secure_monitor_bytes, source_hashes[15]);
+}
+
+std::vector<u8> PartitionDataManager::GetPackage1Decrypted() const {
+    return package1_decrypted_bytes;
+}
+
+std::array<u8, 16> PartitionDataManager::GetMasterKeySource() const {
+    return FindKeyFromHex(package1_decrypted_bytes, source_hashes[1]);
+}
+
+std::array<u8, 16> PartitionDataManager::GetKeyblobMACKeySource() const {
+    return FindKeyFromHex(package1_decrypted_bytes, source_hashes[0]);
+}
+
+std::array<u8, 16> PartitionDataManager::GetKeyblobKeySource(u8 revision) const {
+    if (keyblob_source_hashes[revision] == SHA256Hash{}) {
+        LOG_WARNING(Crypto,
+                    "No keyblob source hash for crypto revision {:02X}! Cannot derive keys...",
+                    revision);
+    }
+    return FindKeyFromHex(package1_decrypted_bytes, keyblob_source_hashes[revision]);
+}
+
+bool PartitionDataManager::HasFuses() const {
+    return fuses != nullptr;
+}
+
+FileSys::VirtualFile PartitionDataManager::GetFusesRaw() const {
+    return fuses;
+}
+
+std::array<u8, 16> PartitionDataManager::GetSecureBootKey() const {
+    if (!HasFuses())
+        return {};
+    Key128 out{};
+    fuses->Read(out.data(), out.size(), 0xA4);
+    return out;
+}
+
+bool PartitionDataManager::HasKFuses() const {
+    return kfuses != nullptr;
+}
+
+FileSys::VirtualFile PartitionDataManager::GetKFusesRaw() const {
+    return kfuses;
+}
+
+bool PartitionDataManager::HasPackage2(Package2Type type) const {
+    return package2.at(static_cast<size_t>(type)) != nullptr;
+}
+
+FileSys::VirtualFile PartitionDataManager::GetPackage2Raw(Package2Type type) const {
+    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>(
+        package2[static_cast<size_t>(type)],
+        package2[static_cast<size_t>(type)]->GetSize() - 0x4000, 0x4000);
+
+    Package2Header header{};
+    if (file->ReadObject(&header) != sizeof(Package2Header))
+        return;
+
+    u8 revision = 0xFF;
+    if (header.magic != Common::MakeMagic('P', 'K', '2', '1')) {
+        for (size_t i = 0; i < package2_keys.size(); ++i) {
+            if (AttemptDecrypt(package2_keys[i], header))
+                revision = i;
+        }
+    }
+
+    if (header.magic != Common::MakeMagic('P', 'K', '2', '1'))
+        return;
+
+    const std::vector<u8> s1_iv(header.section_ctr[1].begin(), header.section_ctr[1].end());
+
+    const auto a = std::make_shared<FileSys::OffsetVfsFile>(
+        file, header.section_size[1], header.section_size[0] + sizeof(Package2Header));
+
+    auto c = a->ReadAllBytes();
+
+    AESCipher<Key128> cipher(package2_keys[revision], Mode::CTR);
+    cipher.SetIV(s1_iv);
+    cipher.Transcode(c.data(), c.size(), c.data(), Op::Decrypt);
+
+    // package2_decrypted[static_cast<size_t>(type)] = s1;
+
+    INIHeader ini;
+    std::memcpy(&ini, c.data(), sizeof(INIHeader));
+    if (ini.magic != Common::MakeMagic('I', 'N', 'I', '1'))
+        return;
+
+    std::map<u64, KIPHeader> kips{};
+    u64 offset = sizeof(INIHeader);
+    for (size_t i = 0; i < ini.process_count; ++i) {
+        KIPHeader kip;
+        std::memcpy(&kip, c.data() + offset, sizeof(KIPHeader));
+        if (kip.magic != Common::MakeMagic('K', 'I', 'P', '1'))
+            return;
+        kips.emplace(offset, kip);
+
+        const auto name =
+            Common::StringFromFixedZeroTerminatedBuffer(kip.name.data(), kip.name.size());
+
+        if (name != "FS" && name != "spl") {
+            offset += sizeof(KIPHeader) + kip.sections[0].size_compressed +
+                      kip.sections[1].size_compressed + kip.sections[2].size_compressed;
+            continue;
+        }
+
+        std::vector<u8> text(kip.sections[0].size_compressed);
+        std::vector<u8> rodata(kip.sections[1].size_compressed);
+        std::vector<u8> data(kip.sections[2].size_compressed);
+
+        u64 offset_sec = sizeof(KIPHeader) + offset;
+        std::memcpy(text.data(), c.data() + offset_sec, text.size());
+        offset_sec += text.size();
+        std::memcpy(rodata.data(), c.data() + offset_sec, rodata.size());
+        offset_sec += rodata.size();
+        std::memcpy(data.data(), c.data() + offset_sec, data.size());
+
+        offset += sizeof(KIPHeader) + kip.sections[0].size_compressed +
+                  kip.sections[1].size_compressed + kip.sections[2].size_compressed;
+
+        text = DecompressBLZ(text);
+        rodata = DecompressBLZ(rodata);
+        data = DecompressBLZ(data);
+
+        std::vector<u8> out(text.size() + rodata.size() + data.size());
+        std::memcpy(out.data(), text.data(), text.size());
+        std::memcpy(out.data() + text.size(), rodata.data(), rodata.size());
+        std::memcpy(out.data() + text.size() + rodata.size(), data.data(), data.size());
+
+        if (name == "FS")
+            package2_fs[static_cast<size_t>(type)] = out;
+        else if (name == "spl")
+            package2_spl[static_cast<size_t>(type)] = out;
+    }
+}
+
+const std::vector<u8>& PartitionDataManager::GetPackage2FSDecompressed(Package2Type type) const {
+    return package2_fs.at(static_cast<size_t>(type));
+}
+
+std::array<u8, 16> PartitionDataManager::GetKeyAreaKeyApplicationSource(Package2Type type) const {
+    return FindKeyFromHex(package2_fs.at(static_cast<size_t>(type)), source_hashes[6]);
+}
+
+std::array<u8, 16> PartitionDataManager::GetKeyAreaKeyOceanSource(Package2Type type) const {
+    return FindKeyFromHex(package2_fs.at(static_cast<size_t>(type)), source_hashes[7]);
+}
+
+std::array<u8, 16> PartitionDataManager::GetKeyAreaKeySystemSource(Package2Type type) const {
+    return FindKeyFromHex(package2_fs.at(static_cast<size_t>(type)), source_hashes[8]);
+}
+
+std::array<u8, 16> PartitionDataManager::GetSDKekSource(Package2Type type) const {
+    return FindKeyFromHex(package2_fs.at(static_cast<size_t>(type)), source_hashes[9]);
+}
+
+std::array<u8, 32> PartitionDataManager::GetSDSaveKeySource(Package2Type type) const {
+    return FindKeyFromHex<0x20>(package2_fs.at(static_cast<size_t>(type)), source_hashes[10]);
+}
+
+std::array<u8, 32> PartitionDataManager::GetSDNCAKeySource(Package2Type type) const {
+    return FindKeyFromHex<0x20>(package2_fs.at(static_cast<size_t>(type)), source_hashes[11]);
+}
+
+std::array<u8, 16> PartitionDataManager::GetHeaderKekSource(Package2Type type) const {
+    return FindKeyFromHex(package2_fs.at(static_cast<size_t>(type)), source_hashes[12]);
+}
+
+std::array<u8, 32> PartitionDataManager::GetHeaderKeySource(Package2Type type) const {
+    return FindKeyFromHex<0x20>(package2_fs.at(static_cast<size_t>(type)), source_hashes[13]);
+}
+
+const std::vector<u8>& PartitionDataManager::GetPackage2SPLDecompressed(Package2Type type) const {
+    return package2_spl.at(static_cast<size_t>(type));
+}
+
+std::array<u8, 16> PartitionDataManager::GetAESKeyGenerationSource(Package2Type type) const {
+    return FindKeyFromHex(package2_spl.at(static_cast<size_t>(type)), source_hashes[4]);
+}
+
+bool PartitionDataManager::HasProdInfo() const {
+    return prodinfo != nullptr;
+}
+
+FileSys::VirtualFile PartitionDataManager::GetProdInfoRaw() const {
+    return prodinfo;
+}
+
+void PartitionDataManager::DecryptProdInfo(std::array<u8, 0x20> bis_key) {
+    if (prodinfo == nullptr)
+        return;
+
+    prodinfo_decrypted = std::make_shared<XTSEncryptionLayer>(prodinfo, bis_key);
+}
+
+std::array<u8, 576> PartitionDataManager::GetETicketExtendedKek() const {
+    std::array<u8, 0x240> out{};
+    if (prodinfo_decrypted != nullptr)
+        prodinfo_decrypted->Read(out.data(), out.size(), 0x3890);
+    return out;
+}
+} // namespace Core::Crypto
diff --git a/src/core/crypto/partition_data_manager.h b/src/core/crypto/partition_data_manager.h
new file mode 100644
index 000000000..45c7fecfa
--- /dev/null
+++ b/src/core/crypto/partition_data_manager.h
@@ -0,0 +1,105 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <vector>
+#include "common/common_funcs.h"
+#include "common/common_types.h"
+#include "common/swap.h"
+#include "core/file_sys/vfs_types.h"
+
+namespace Core::Crypto {
+
+enum class Package2Type {
+    NormalMain,
+    NormalSub,
+    SafeModeMain,
+    SafeModeSub,
+    RepairMain,
+    RepairSub,
+};
+
+class PartitionDataManager {
+public:
+    static const u8 MAX_KEYBLOB_SOURCE_HASH;
+
+    explicit PartitionDataManager(FileSys::VirtualDir sysdata_dir);
+    ~PartitionDataManager();
+
+    // BOOT0
+    bool HasBoot0() const;
+    FileSys::VirtualFile GetBoot0Raw() const;
+    std::array<u8, 0xB0> GetEncryptedKeyblob(u8 index) const;
+    std::array<std::array<u8, 0xB0>, 0x20> GetEncryptedKeyblobs() const;
+    std::vector<u8> GetSecureMonitor() const;
+    std::array<u8, 0x10> GetPackage2KeySource() const;
+    std::array<u8, 0x10> GetAESKekGenerationSource() const;
+    std::array<u8, 0x10> GetTitlekekSource() const;
+    std::array<std::array<u8, 0x10>, 0x20> GetTZMasterKeys(std::array<u8, 0x10> master_key) const;
+    std::array<u8, 0x10> GetRSAKekSeed3() const;
+    std::array<u8, 0x10> GetRSAKekMask0() const;
+    std::vector<u8> GetPackage1Decrypted() const;
+    std::array<u8, 0x10> GetMasterKeySource() const;
+    std::array<u8, 0x10> GetKeyblobMACKeySource() const;
+    std::array<u8, 0x10> GetKeyblobKeySource(u8 revision) const;
+
+    // Fuses
+    bool HasFuses() const;
+    FileSys::VirtualFile GetFusesRaw() const;
+    std::array<u8, 0x10> GetSecureBootKey() const;
+
+    // K-Fuses
+    bool HasKFuses() const;
+    FileSys::VirtualFile GetKFusesRaw() const;
+
+    // Package2
+    bool HasPackage2(Package2Type type = Package2Type::NormalMain) const;
+    FileSys::VirtualFile GetPackage2Raw(Package2Type type = Package2Type::NormalMain) const;
+    void DecryptPackage2(std::array<std::array<u8, 16>, 0x20> package2, Package2Type type);
+    const std::vector<u8>& GetPackage2FSDecompressed(
+        Package2Type type = Package2Type::NormalMain) const;
+    std::array<u8, 0x10> GetKeyAreaKeyApplicationSource(
+        Package2Type type = Package2Type::NormalMain) const;
+    std::array<u8, 0x10> GetKeyAreaKeyOceanSource(
+        Package2Type type = Package2Type::NormalMain) const;
+    std::array<u8, 0x10> GetKeyAreaKeySystemSource(
+        Package2Type type = Package2Type::NormalMain) const;
+    std::array<u8, 0x10> GetSDKekSource(Package2Type type = Package2Type::NormalMain) const;
+    std::array<u8, 0x20> GetSDSaveKeySource(Package2Type type = Package2Type::NormalMain) const;
+    std::array<u8, 0x20> GetSDNCAKeySource(Package2Type type = Package2Type::NormalMain) const;
+    std::array<u8, 0x10> GetHeaderKekSource(Package2Type type = Package2Type::NormalMain) const;
+    std::array<u8, 0x20> GetHeaderKeySource(Package2Type type = Package2Type::NormalMain) const;
+    const std::vector<u8>& GetPackage2SPLDecompressed(
+        Package2Type type = Package2Type::NormalMain) const;
+    std::array<u8, 0x10> GetAESKeyGenerationSource(
+        Package2Type type = Package2Type::NormalMain) const;
+
+    // PRODINFO
+    bool HasProdInfo() const;
+    FileSys::VirtualFile GetProdInfoRaw() const;
+    void DecryptProdInfo(std::array<u8, 0x20> bis_key);
+    std::array<u8, 0x240> GetETicketExtendedKek() const;
+
+private:
+    FileSys::VirtualFile boot0;
+    FileSys::VirtualFile fuses;
+    FileSys::VirtualFile kfuses;
+    std::array<FileSys::VirtualFile, 6> package2;
+    FileSys::VirtualFile prodinfo;
+    FileSys::VirtualFile secure_monitor;
+    FileSys::VirtualFile package1_decrypted;
+
+    // Processed
+    std::array<FileSys::VirtualFile, 6> package2_decrypted;
+    FileSys::VirtualFile prodinfo_decrypted;
+    std::vector<u8> secure_monitor_bytes;
+    std::vector<u8> package1_decrypted_bytes;
+    std::array<std::vector<u8>, 6> package2_fs;
+    std::array<std::vector<u8>, 6> package2_spl;
+};
+
+std::array<u8, 0x10> FindKeyFromHex16(const std::vector<u8>& binary, std::array<u8, 0x20> hash);
+
+} // namespace Core::Crypto
diff --git a/src/core/file_sys/vfs.h b/src/core/file_sys/vfs.h
index 270291631..7f0d520ca 100644
--- a/src/core/file_sys/vfs.h
+++ b/src/core/file_sys/vfs.h
@@ -12,20 +12,12 @@
 #include <vector>
 #include <boost/optional.hpp>
 #include "common/common_types.h"
+#include "core/file_sys/vfs_types.h"
 
 namespace FileSys {
 
-class VfsDirectory;
-class VfsFile;
-class VfsFilesystem;
-
 enum class Mode : u32;
 
-// Convenience typedefs to use Vfs* interfaces
-using VirtualFilesystem = std::shared_ptr<VfsFilesystem>;
-using VirtualDir = std::shared_ptr<VfsDirectory>;
-using VirtualFile = std::shared_ptr<VfsFile>;
-
 // An enumeration representing what can be at the end of a path in a VfsFilesystem
 enum class VfsEntryType {
     None,
diff --git a/src/core/file_sys/vfs_types.h b/src/core/file_sys/vfs_types.h
new file mode 100644
index 000000000..6215ed7af
--- /dev/null
+++ b/src/core/file_sys/vfs_types.h
@@ -0,0 +1,21 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <memory>
+
+namespace FileSys {
+
+class VfsDirectory;
+class VfsFile;
+class VfsFilesystem;
+
+// Declarations for Vfs* pointer types
+
+using VirtualDir = std::shared_ptr<VfsDirectory>;
+using VirtualFile = std::shared_ptr<VfsFile>;
+using VirtualFilesystem = std::shared_ptr<VfsFilesystem>;
+
+} // namespace FileSys
diff --git a/src/yuzu/main.cpp b/src/yuzu/main.cpp
index e11833c5a..fc186dc2d 100644
--- a/src/yuzu/main.cpp
+++ b/src/yuzu/main.cpp
@@ -31,6 +31,7 @@ static FileSys::VirtualFile VfsDirectoryCreateFileWrapper(const FileSys::Virtual
 #include <QDialogButtonBox>
 #include <QFileDialog>
 #include <QMessageBox>
+#include <QtConcurrent/QtConcurrent>
 #include <QtGui>
 #include <QtWidgets>
 #include <fmt/format.h>
@@ -171,6 +172,9 @@ GMainWindow::GMainWindow()
                        .arg(Common::g_build_fullname, Common::g_scm_branch, Common::g_scm_desc));
     show();
 
+    // Gen keys if necessary
+    OnReinitializeKeys(ReinitializeKeyBehavior::NoWarning);
+
     // Necessary to load titles from nand in gamelist.
     Service::FileSystem::CreateFactories(vfs);
     game_list->LoadCompatibilityList();
@@ -443,6 +447,8 @@ void GMainWindow::ConnectMenuEvents() {
     connect(ui.action_Fullscreen, &QAction::triggered, this, &GMainWindow::ToggleFullscreen);
 
     // Help
+    connect(ui.action_Rederive, &QAction::triggered, this,
+            std::bind(&GMainWindow::OnReinitializeKeys, this, ReinitializeKeyBehavior::Warning));
     connect(ui.action_About, &QAction::triggered, this, &GMainWindow::OnAbout);
 }
 
@@ -1375,6 +1381,82 @@ void GMainWindow::OnCoreError(Core::System::ResultStatus result, std::string det
     }
 }
 
+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 "
+               "means or what you are doing, \nthis is a potentially destructive action. \nPlease "
+               "make "
+               "sure this is what you want \nand optionally make backups.\n\nThis will delete your "
+               "autogenerated key files and re-run the key derivation module."),
+            QMessageBox::StandardButtons{QMessageBox::Ok, QMessageBox::Cancel});
+
+        if (res == QMessageBox::Cancel)
+            return;
+
+        FileUtil::Delete(FileUtil::GetUserPath(FileUtil::UserPath::KeysDir) +
+                         "prod.keys_autogenerated");
+        FileUtil::Delete(FileUtil::GetUserPath(FileUtil::UserPath::KeysDir) +
+                         "console.keys_autogenerated");
+        FileUtil::Delete(FileUtil::GetUserPath(FileUtil::UserPath::KeysDir) +
+                         "title.keys_autogenerated");
+    }
+
+    Core::Crypto::KeyManager keys{};
+    if (keys.BaseDeriveNecessary()) {
+        Core::Crypto::PartitionDataManager pdm{vfs->OpenDirectory(
+            FileUtil::GetUserPath(FileUtil::UserPath::SysDataDir), FileSys::Mode::Read)};
+
+        const auto function = [this, &keys, &pdm] {
+            keys.PopulateFromPartitionData(pdm);
+            Service::FileSystem::CreateFactories(vfs);
+            keys.DeriveETicket(pdm);
+        };
+
+        QString errors;
+
+        if (!pdm.HasFuses())
+            errors += tr("- Missing fuses - Cannot derive SBK\n");
+        if (!pdm.HasBoot0())
+            errors += tr("- Missing BOOT0 - Cannot derive master keys\n");
+        if (!pdm.HasPackage2())
+            errors += tr("- Missing BCPKG2-1-Normal-Main - Cannot derive general keys\n");
+        if (!pdm.HasProdInfo())
+            errors += tr("- Missing PRODINFO - Cannot derive title keys\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") +
+                    errors);
+        }
+
+        QProgressDialog prog;
+        prog.setRange(0, 0);
+        prog.setLabelText(tr("Deriving keys...\nThis may take up to a minute depending \non your "
+                             "system's performance."));
+        prog.setWindowTitle(tr("Deriving Keys"));
+
+        prog.show();
+
+        auto future = QtConcurrent::run(function);
+        while (!future.isFinished()) {
+            QCoreApplication::processEvents();
+        }
+
+        prog.close();
+    }
+
+    Service::FileSystem::CreateFactories(vfs);
+
+    if (behavior == ReinitializeKeyBehavior::Warning) {
+        game_list->PopulateAsync(UISettings::values.gamedir, UISettings::values.gamedir_deepscan);
+    }
+}
+
 bool GMainWindow::ConfirmClose() {
     if (emu_thread == nullptr || !UISettings::values.confirm_before_closing)
         return true;
diff --git a/src/yuzu/main.h b/src/yuzu/main.h
index fe0e9a50a..3663d6aed 100644
--- a/src/yuzu/main.h
+++ b/src/yuzu/main.h
@@ -41,6 +41,11 @@ enum class EmulatedDirectoryTarget {
     SDMC,
 };
 
+enum class ReinitializeKeyBehavior {
+    NoWarning,
+    Warning,
+};
+
 namespace DiscordRPC {
 class DiscordInterface;
 }
@@ -167,6 +172,7 @@ private slots:
     void HideFullscreen();
     void ToggleWindowMode();
     void OnCoreError(Core::System::ResultStatus, std::string);
+    void OnReinitializeKeys(ReinitializeKeyBehavior behavior);
 
 private:
     void UpdateStatusBar();
diff --git a/src/yuzu/main.ui b/src/yuzu/main.ui
index cb1664b21..9851f507d 100644
--- a/src/yuzu/main.ui
+++ b/src/yuzu/main.ui
@@ -103,6 +103,7 @@
     </property>
     <addaction name="action_Report_Compatibility"/>
     <addaction name="separator"/>
+     <addaction name="action_Rederive"/>
     <addaction name="action_About"/>
    </widget>
    <addaction name="menu_File"/>
@@ -159,6 +160,11 @@
     <string>&amp;Stop</string>
    </property>
   </action>
+   <action name="action_Rederive">
+     <property name="text">
+       <string>Reinitialize keys...</string>
+     </property>
+   </action>
   <action name="action_About">
    <property name="text">
     <string>About yuzu</string>