// Kernel verification
bool verify_kernel_integrity(void) {
    // Verify kernel signature
    if (!verify_signature(KERNEL_SIGNATURE)) {
        return false;
    }
    
    // Verify kernel checksum
    if (!verify_checksum(KERNEL_CHECKSUM)) {
        return false;
    }
    
    // Verify kernel modules
    if (!verify_modules()) {
        return false;
    }
    
    return true;
}

// Module verification
bool verify_module_integrity(const void *module, size_t size) {
    // Verify module signature
    if (!verify_signature(module, size)) {
        return false;
    }
    
    // Verify module checksum
    if (!verify_checksum(module, size)) {
        return false;
    }
    
    // Verify module dependencies
    if (!verify_dependencies(module)) {
        return false;
    }
    
    return true;
}

// Capability structure
struct capability {
    uint32_t type;           // Capability type
    uint32_t permissions;    // Permissions
    uint32_t resource_id;    // Resource ID
    struct process *owner;   // Owner process
    struct capability *next; // Capability list
};

// Check capability
bool check_capability(struct process *proc, 
                     uint32_t type,
                     uint32_t resource_id) {
    struct capability *cap = proc->capabilities;
    
    while (cap) {
        if (cap->type == type && 
            cap->resource_id == resource_id) {
            return true;
        }
        cap = cap->next;
    }
    
    return false;
}

// Encrypt data
int encrypt_data(const void *data, size_t size,
                 void *encrypted, size_t *encrypted_size) {
    // Generate encryption key
    struct crypto_key key;
    if (!generate_key(&key)) {
        return E_CRYPTO;
    }
    
    // Encrypt data
    if (!aes_encrypt(data, size, encrypted, 
                     encrypted_size, &key)) {
        return E_CRYPTO;
    }
    
    // Store key securely
    if (!store_key(&key)) {
        return E_CRYPTO;
    }
    
    return E_OK;
}

// Decrypt data
int decrypt_data(const void *encrypted, size_t encrypted_size,
                 void *decrypted, size_t *decrypted_size) {
    // Retrieve encryption key
    struct crypto_key key;
    if (!retrieve_key(&key)) {
        return E_CRYPTO;
    }
    
    // Decrypt data
    if (!aes_decrypt(encrypted, encrypted_size,
                     decrypted, decrypted_size, &key)) {
        return E_CRYPTO;
    }
    
    return E_OK;
}

// Process creation with security
struct process *create_secure_process(
    const char *name,
    void *entry_point,
    uint32_t priority,
    struct security_context *sec_ctx) {
    
    // Create process
    struct process *proc = create_process(name, entry_point, priority);
    if (!proc) {
        return NULL;
    }
    
    // Set security context
    if (!set_security_context(proc, sec_ctx)) {
        process_terminate(proc);
        return NULL;
    }
    
    // Initialize capabilities
    if (!init_capabilities(proc)) {
        process_terminate(proc);
        return NULL;
    }
    
    // Set resource limits
    if (!set_resource_limits(proc)) {
        process_terminate(proc);
        return NULL;
    }
    
    return proc;
}

// Set page protection
int set_page_protection(struct process *proc,
                       void *addr,
                       uint32_t flags) {
    // Check permissions
    if (!check_permission(proc, PERM_MEMORY)) {
        return E_PERM;
    }
    
    // Set page flags
    if (!set_page_flags(proc->pages, addr, flags)) {
        return E_MEMORY;
    }
    
    // Update page table
    if (!update_page_table(proc->pages)) {
        return E_MEMORY;
    }
    
    return E_OK;
}

// Encrypt memory region
int encrypt_memory_region(struct process *proc,
                         void *addr,
                         size_t size) {
    // Generate encryption key
    struct crypto_key key;
    if (!generate_key(&key)) {
        return E_CRYPTO;
    }
    
    // Encrypt memory
    if (!encrypt_pages(proc->pages, addr, size, &key)) {
        return E_CRYPTO;
    }
    
    // Store key
    if (!store_memory_key(proc, addr, &key)) {
        return E_CRYPTO;
    }
    
    return E_OK;
}

// Network security initialization
bool init_network_security(void) {
    // Initialize firewall
    if (!init_firewall()) {
        return false;
    }
    
    // Initialize TLS
    if (!init_tls()) {
        return false;
    }
    
    // Initialize IPsec
    if (!init_ipsec()) {
        return false;
    }
    
    // Set default rules
    if (!set_default_rules()) {
        return false;
    }
    
    return true;
}

// Filter network packet
bool filter_network_packet(struct packet *packet) {
    // Check firewall rules
    if (!check_firewall_rules(packet)) {
        return false;
    }
    
    // Validate protocol
    if (!validate_protocol(packet)) {
        return false;
    }
    
    // Check rate limits
    if (!check_rate_limits(packet)) {
        return false;
    }
    
    return true;
}

// Log security event
void log_security_event(struct security_event *event) {
    // Validate event
    if (!validate_event(event)) {
        return;
    }
    
    // Add event to log
    if (!add_event_to_log(event)) {
        return;
    }
    
    // Check alert conditions
    if (check_alert_conditions(event)) {
        raise_security_alert(event);
    }
    
    // Update statistics
    update_security_stats(event);
}

// Handle security alert
void handle_security_alert(struct security_alert *alert) {
    // Log alert
    log_security_alert(alert);
    
    // Check alert level
    switch (alert->level) {
        case ALERT_LEVEL_LOW:
            handle_low_alert(alert);
            break;
        case ALERT_LEVEL_MEDIUM:
            handle_medium_alert(alert);
            break;
        case ALERT_LEVEL_HIGH:
            handle_high_alert(alert);
            break;
        case ALERT_LEVEL_CRITICAL:
            handle_critical_alert(alert);
            break;
    }
    
    // Update alert status
    update_alert_status(alert);
}