AES-256 Anti-Cheat Persistence

Bank-grade AES-256 encryption, PBKDF2 salt derivation, atomic disk replacement, and multi-slot save profiles.

Table of Contents

1. 🔒 Security Architecture
2. 💾 Multi-Slot Profile API

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🔒 Security Architecture

Standard PlayerPrefs and raw .json files are vulnerable to Cheat Engine, hex editors, and root browser inspections. ACHIEVE PRO employs multiple security safeguards:

1. AES-256-CBC Encryption: Standard symmetric block cipher encrypting all serialized achievement buffers.
2. PBKDF2 Key Derivation: Custom salt and pepper hashes generating cryptographically robust 256-bit encryption keys.
3. HMAC-SHA256 Checksums: Save files contain a cryptographic hash of their inner content. If a player modifies any value with a hex editor, the checksum mismatch is detected and logged.
4. Atomic Temp Writes (.tmp): Data is written to a temporary file before replacing the target save file, preventing corruption during power cuts or sudden game crashes.

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💾 Multi-Slot Profile API

Support multiple player character slots with a single line of code:

using DecnetGames.AchievementSystemPro;

// Switch active save slot (e.g. for character profiles)
AchievementManager.SwitchSlot("character_warrior_slot");

// List all saved profile slots on this device
List<SaveSlotInfo> slots = AchievementManager.ListAllSlots();
foreach (var slot in slots)
{
    Debug.Log($"Profile '{slot.slotName}': {slot.unlockedCount} Achievements, {slot.earnedGamerscore}G");
}