1 files changed, 116 insertions, 0 deletions
diff --git a/src/core/crypto/key_manager.h b/src/core/crypto/key_manager.h
new file mode 100644
index 000000000..155989e46
--- /dev/null
+++ b/src/core/crypto/key_manager.h
@@ -0,0 +1,116 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+#include <array>
+#include <unordered_map>
+#include <vector>
+#include "common/common_types.h"
+
+namespace Crypto {
+
+typedef std::array<u8, 0x10> Key128;
+typedef std::array<u8, 0x20> Key256;
+typedef std::array<u8, 0x20> SHA256Hash;
+
+static_assert(sizeof(Key128) == 16, "Key128 must be 128 bytes big.");
+static_assert(sizeof(Key256) == 32, "Key128 must be 128 bytes big.");
+
+enum class S256KeyType : u64 {
+    HEADER,  //
+    SD_SAVE, //
+    SD_NCA,  //
+};
+
+enum class S128KeyType : u64 {
+    MASTER,          // f1=crypto revision
+    PACKAGE1,        // f1=crypto revision
+    PACKAGE2,        // f1=crypto revision
+    TITLEKEK,        // f1=crypto revision
+    ETICKET_RSA_KEK, //
+    KEY_AREA,        // f1=crypto revision f2=type {app, ocean, system}
+    SD_SEED,         //
+    TITLEKEY,        // f1=rights id LSB f2=rights id MSB
+};
+
+enum class KeyAreaKeyType : u8 {
+    Application,
+    Ocean,
+    System,
+};
+
+template <typename KeyType>
+struct KeyIndex {
+    KeyType type;
+    u64 field1;
+    u64 field2;
+
+    std::string DebugInfo() {
+        u8 key_size = 16;
+        if (std::is_same_v<KeyType, S256KeyType>)
+            key_size = 32;
+        return fmt::format("key_size={:02X}, key={:02X}, field1={:016X}, field2={:016X}", key_size,
+                           static_cast<u8>(type), field1, field2);
+    }
+};
+
+// The following two (== and hash) are so KeyIndex can be a key in unordered_map
+
+template <typename KeyType>
+bool operator==(const KeyIndex<KeyType>& lhs, const KeyIndex<KeyType>& rhs) {
+    return lhs.type == rhs.type && lhs.field1 == rhs.field1 && lhs.field2 == rhs.field2;
+}
+
+} // namespace Crypto
+
+namespace std {
+template <typename KeyType>
+struct hash<Crypto::KeyIndex<KeyType>> {
+    size_t operator()(const Crypto::KeyIndex<KeyType>& k) const {
+        using std::hash;
+
+        return ((hash<u64>()(static_cast<u64>(k.type)) ^ (hash<u64>()(k.field1) << 1)) >> 1) ^
+               (hash<u64>()(k.field2) << 1);
+    }
+};
+} // namespace std
+
+namespace Crypto {
+
+std::array<u8, 0x10> operator"" _array16(const char* str, size_t len);
+std::array<u8, 0x20> operator"" _array32(const char* str, size_t len);
+
+struct KeyManager {
+    void SetValidationMode(bool dev);
+    void LoadFromFile(std::string_view filename, bool is_title_keys);
+
+    bool HasKey(S128KeyType id, u64 field1 = 0, u64 field2 = 0);
+    bool HasKey(S256KeyType id, u64 field1 = 0, u64 field2 = 0);
+
+    Key128 GetKey(S128KeyType id, u64 field1 = 0, u64 field2 = 0);
+    Key256 GetKey(S256KeyType id, u64 field1 = 0, u64 field2 = 0);
+
+    void SetKey(S128KeyType id, Key128 key, u64 field1 = 0, u64 field2 = 0);
+    void SetKey(S256KeyType id, Key256 key, u64 field1 = 0, u64 field2 = 0);
+
+    bool ValidateKey(S128KeyType key, u64 field1 = 0, u64 field2 = 0);
+    bool ValidateKey(S256KeyType key, u64 field1 = 0, u64 field2 = 0);
+
+private:
+    std::unordered_map<KeyIndex<S128KeyType>, Key128> s128_keys;
+    std::unordered_map<KeyIndex<S256KeyType>, Key256> s256_keys;
+
+    bool dev_mode = false;
+
+    static std::unordered_map<KeyIndex<S128KeyType>, SHA256Hash> s128_hash_prod;
+    static std::unordered_map<KeyIndex<S256KeyType>, SHA256Hash> s256_hash_prod;
+    static std::unordered_map<KeyIndex<S128KeyType>, SHA256Hash> s128_hash_dev;
+    static std::unordered_map<KeyIndex<S256KeyType>, SHA256Hash> s256_hash_dev;
+    static std::unordered_map<std::string, KeyIndex<S128KeyType>> s128_file_id;
+    static std::unordered_map<std::string, KeyIndex<S256KeyType>> s256_file_id;
+};
+
+extern KeyManager keys;
+
+} // namespace Crypto