From 4961b569b60c403ccb6a17e6588ac699de38f982 Mon Sep 17 00:00:00 2001
From: KOSASIH <kosasihg88@gmail.com>
Date: Tue, 26 Nov 2024 13:57:45 +0700
Subject: [PATCH] Create security_audit.py

---
 .../src/core/security_audit.py                | 90 +++++++++++++++++++
 1 file changed, 90 insertions(+)
 create mode 100644 QuantumNexusProtocol/src/core/security_audit.py

diff --git a/QuantumNexusProtocol/src/core/security_audit.py b/QuantumNexusProtocol/src/core/security_audit.py
new file mode 100644
index 000000000..af8a0fcbe
--- /dev/null
+++ b/QuantumNexusProtocol/src/core/security_audit.py
@@ -0,0 +1,90 @@
+import hashlib
+import json
+import logging
+
+# Configure logging
+logging.basicConfig(level=logging.INFO, format='%(asctime)s - %(levelname)s - %(message)s')
+
+class SecurityAudit:
+    def __init__(self):
+        self.transactions = []  # List to hold transactions
+        self.vulnerabilities = []  # List to hold detected vulnerabilities
+
+    def add_transaction(self, transaction):
+        """Add a transaction to the audit log."""
+        if self.validate_transaction(transaction):
+            self.transactions.append(transaction)
+            logging.info(f"Transaction added: {transaction}")
+        else:
+            logging.warning(f"Transaction failed validation: {transaction}")
+
+    def validate_transaction(self, transaction):
+        """Validate a transaction for common security issues."""
+        # Check for missing fields
+        required_fields = ['id', 'sender', 'recipient', 'amount', 'signature']
+        for field in required_fields:
+            if field not in transaction:
+                self.vulnerabilities.append(f"Missing field: {field} in transaction {transaction['id']}")
+                return False
+
+        # Check for negative amounts
+        if transaction['amount'] < 0:
+            self.vulnerabilities.append(f"Negative amount in transaction {transaction['id']}")
+            return False
+
+        # Check for valid signature (placeholder for actual signature verification)
+        if not self.verify_signature(transaction['signature']):
+            self.vulnerabilities.append(f"Invalid signature in transaction {transaction['id']}")
+            return False
+
+        return True
+
+    def verify_signature(self, signature):
+        """Placeholder for signature verification logic."""
+        # In a real implementation, you would verify the signature against the sender's public key
+        return True  # Assume signature is valid for this example
+
+    def log_vulnerabilities(self):
+        """Log detected vulnerabilities."""
+        if self.vulnerabilities:
+            logging.info("Detected vulnerabilities:")
+            for vulnerability in self.vulnerabilities:
+                logging.warning(vulnerability)
+        else:
+            logging.info("No vulnerabilities detected.")
+
+    def generate_transaction_hash(self, transaction):
+        """Generate a hash for a transaction."""
+        transaction_string = json.dumps(transaction, sort_keys=True).encode()
+        return hashlib.sha256(transaction_string).hexdigest()
+
+    def get_audit_report(self):
+        """Generate a report of the audit."""
+        report = {
+            'total_transactions': len(self.transactions),
+            'vulnerabilities_detected': len(self.vulnerabilities),
+            'vulnerabilities': self.vulnerabilities
+        }
+        return report
+
+# Example usage
+if __name__ == '__main__':
+    audit = SecurityAudit()
+
+    # Simulate adding transactions
+    transactions = [
+        {'id': '1', 'sender': 'Alice', 'recipient': 'Bob', 'amount': 50, 'signature': 'sig1'},
+        {'id': '2', 'sender': 'Bob', 'recipient': 'Charlie', 'amount': -20, 'signature': 'sig2'},  # Invalid
+        {'id': '3', 'sender': 'Charlie', 'recipient': 'Alice', 'amount': 30, 'signature': 'sig3'},
+        {'id': '4', 'sender': 'Alice', 'recipient': 'Bob', 'amount': 100}  # Missing signature
+    ]
+
+    for transaction in transactions:
+        audit.add_transaction(transaction)
+
+    # Log vulnerabilities
+    audit.log_vulnerabilities()
+
+    # Generate audit report
+    report = audit.get_audit_report()
+    print("Audit Report:", report)