security_gateway.py

"""
LGM-35A Sentinel Program - Cybersecurity Mission Assurance Subsystem
Validates command integrity via simulated cryptographic handshake validation.
"""

class SecurityGateway:
    """Handles authentication and secure command execution gating."""
    def __init__(self):
        self.authenticated_session = False
        self.intrusion_attempts = 0

    def execute_handshake(self, token: str) -> bool:
        """Validates entry token against the program's required security schema."""
        # Simulated secure program handshake key
        if token == "SENTINEL_ALPHA_2026_SECURE":
            self.authenticated_session = True
            print("[SECURITY INFO]: Cryptographic handshake successful. Session authorized.")
            return True
        else:
            self.intrusion_attempts += 1
            print(f"[SECURITY WARN]: Unauthorized token attempt detected! Failures: {self.intrusion_attempts}")
            return False

    def authorize_command(self, command_string: str) -> str:
        """Gates critical command lines based on current authentication status."""
        if not self.authenticated_session:
            return "REJECTED: Session unauthenticated. Command line blocked."
        
        return f"EXECUTED: Command '{command_string}' cleared through security gateway."


if __name__ == "__main__":
    print("Initializing Cyber Mission Assurance Gateway...")
    gateway = SecurityGateway()
    
    # Test unauthorized access
    print(gateway.authorize_command("STAGE_ONE_ARM"))
    
    # Authenticate and run
    gateway.execute_handshake("SENTINEL_ALPHA_2026_SECURE")
    print(gateway.authorize_command("STAGE_ONE_ARM"))