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==============================================================

📡 
Detailed Features & Functions Guide
Welcome to the comprehensive breakdown of e-N-c-R-y-P-t! 

==============================================================

🔧 Core Functions
------------------

1. **sha256** 🔐
   - 🧩 Hashes a given string using the SHA-256 algorithm.
   - 🧪 Utilizes OpenSSL's EVP API.
   - 🧾 Returns the hash as a hexadecimal string.

2. **loadAllowedHashes** 📥
   - 📂 Loads allowed peer IPs from allowed_hashes.txt.
   - 🧾 Returns a set of allowed IPs.

3. **loadTrustedHashes** 🔒
   - 📂 Loads trusted peer hashes from trusted_hashes.txt.
   - 🧾 Returns a set of trusted hashes.

4. **appendTrustedHash** ➕
   - 📝 Appends a new trusted hash to trusted_hashes.txt.
   - 🛡️ Ensures trusted peers are recorded.

5. **isAllowedPeerIP** ✅
   - 🔍 Checks if a peer's IP is in the allowed list.
   - 🧾 Returns true if allowed, false otherwise.

6. **isTrustedPeerIP** 🛡️
   - 🔍 Checks if a peer's IP is trusted.
   - 🧾 If not trusted, hashes the IP and appends it to the trusted list.
   - 🧾 Returns true if trusted, false otherwise.

7. **human_readable_bytes** 📊
   - 🔢 Converts byte count to a human-readable format (e.g., KB, MB).
   - 🧾 Returns a formatted string.

8. **is_singleton** 🚫
   - 🔒 Ensures only one instance of the application runs at a time.
   - 🧾 Returns true if single instance, false otherwise.

9. **log_stats** 📈
   - 🕒 Logs statistics to stats.log.
   - 📊 Includes data on banned IPs, TLS connections, traffic, and packets.
   - 🔄 Resets stats after each log.

10. **to_upper** 🔠
    - 🔤 Converts a string to uppercase.
    - 🧾 Returns the uppercase string.


📊 Stats Structure
-------------------------
- 🧮 Tracks:
  - 🚫 banned_ips: Number of banned IPs.
  - 🔓 nonTlsAttemptsCount: Number of non-TLS attempts.
  - 🔐 tlsConnections: Number of TLS connections.
  - 📥 bytes_rx: Bytes received.
  - 📤 bytes_tx: Bytes transmitted.
  - 📦 packets_rx: Packets received.
  - 📦 packets_tx: Packets transmitted.
- 🔄 Resets every 1 minute after logging.


📁 Configuration Files
-----------------------
- **allowed_hashes.txt** ✅
  - 📄 Lists allowed peer IPs.
- **trusted_hashes.txt** 🔐
  - 📄 Stores trusted peer hashes.
- **stats.lock** 🔒
  - 📄 Ensures a single instance of the application.
- **stats.log** 📈
  - 📄 Logs 1 minute statistics.
  

🔄 Logging & Monitoring
------------------------
- 🕒 Logs statistics every 1 minute.
- 📊 Includes data on:
  - 🚫 Banned IPs
  - 🔓 Non-TLS attempts
  - 🔐 TLS connections
  - 📥 Received traffic
  - 📤 Transmitted traffic
  - 📦 Received packets
  - 📦 Transmitted packets
- 📂 Logs to stats.log for monitoring.


⚠️ Notes
---------
- 🔐 Utilizes OpenSSL's SHA-256 for hashing.
- 🔄 Ensures only one instance runs at a time using stats.lock.
- 📊 Logs detailed statistics to stats.log.
- 🧾 Requires allowed_hashes.txt and trusted_hashes.txt for operation.