security-best-practices.md

Security Best Practices - Zarban SDK

This document outlines essential security practices for implementing the Zarban SDK in your applications. Following these guidelines will help ensure the security of your integration and protect your users' assets.

Authentication & Password Security

Password Requirements

• Enforce strong password policies:
  • Minimum length: 12 characters
  • Must include a combination of:
    • Uppercase letters (A-Z)
    • Lowercase letters (a-z)
    • Numbers (0-9)
    • Special characters (!@#$%^&*)
  • Avoid common patterns and sequences
  • Prevent use of previously compromised passwords

Password Storage

# DON'T store passwords in plain text
password = "userPassword123"  # Incorrect

# DON'T store passwords in configuration files
config = {
    "user_password": "secretPassword"  # Incorrect
}

# DO use environment variables for sensitive data
import os
api_key = os.environ.get('ZARBAN_API_KEY')

API Key Management

1. Never hardcode API keys in your source code
2. Use environment variables or secure credential management systems
3. Implement key rotation policies
4. Use different API keys for development and production environments

Secure Communication

SSL/TLS Configuration

from zarban.wallet.openapi_client.configuration import Configuration

# DO verify SSL certificates
configuration = Configuration(
    host="https://api.zarban.io",
    verify_ssl=True  # Default is True, explicitly shown for emphasis
)

# DON'T disable SSL verification in production
configuration = Configuration(
    host="https://api.zarban.io",
    verify_ssl=False  # INCORRECT for production
)

API Endpoint Security

1. Always use HTTPS endpoints
2. Validate SSL certificates
3. Implement certificate pinning for additional security
4. Monitor for certificate expiration

Error Handling & Logging

Secure Error Handling

from zarban.wallet.openapi_client.exceptions import ApiException

try:
    api_response = api_instance.auth_signup_post(signup_request)
except ApiException as e:
    # DO log errors securely
    logger.error(f"API Error Code: {e.status}")

    # DON'T expose sensitive information in error messages to users
    # Incorrect:
    print(f"Failed to authenticate with credentials {signup_request.email}")

    # Correct:
    print("Authentication failed. Please check your credentials and try again.")

Logging Best Practices

1. Never log sensitive information such as:
   • Passwords
   • API keys
   • Private keys
   • Personal identifying information
2. Use appropriate log levels
3. Implement secure log rotation
4. Monitor logs for security events

Request Rate Limiting

Implementation Example

from datetime import datetime, timedelta
from collections import deque

class RateLimiter:
    def __init__(self, max_requests, time_window):
        self.max_requests = max_requests
        self.time_window = time_window
        self.requests = deque()

    def can_make_request(self):
        now = datetime.now()
        while self.requests and now - self.requests[0] >= self.time_window:
            self.requests.popleft()

        if len(self.requests) < self.max_requests:
            self.requests.append(now)
            return True
        return False

# Usage
rate_limiter = RateLimiter(max_requests=100, time_window=timedelta(minutes=1))

Data Validation & Sanitization

Input Validation

def validate_email(email):
    import re
    pattern = r'^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$'
    return bool(re.match(pattern, email))

def create_user(email, password):
    # DO validate input before processing
    if not validate_email(email):
        raise ValueError("Invalid email format")

    if len(password) < 12:
        raise ValueError("Password too short")

Output Sanitization

1. Sanitize all data before displaying to users
2. Use proper encoding for different contexts (HTML, JSON, etc.)
3. Implement content security policies

Session Management

Best Practices

1. Use secure session tokens
2. Implement proper session timeouts
3. Invalidate sessions on logout
4. Monitor for suspicious session activities

# Example session configuration
session_config = {
    'session_lifetime': timedelta(hours=1),
    'refresh_token_lifetime': timedelta(days=7),
    'max_active_sessions': 3
}

Production Deployment Checklist

Security Configurations

• SSL/TLS properly configured
• API keys securely stored
• Rate limiting implemented
• Error handling configured
• Logging properly set up
• Input validation implemented
• Output sanitization in place
• Session management configured
• Security headers implemented

Monitoring & Alerts

1. Set up monitoring for:
   • Failed authentication attempts
   • Unusual API usage patterns
   • Rate limit violations
   • Error rate spikes
2. Configure alerts for security events
3. Implement audit logging

Regular Security Maintenance

Routine Tasks

1. Update SDK to latest version
2. Rotate API keys periodically
3. Review and update security configurations
4. Audit system logs
5. Update SSL certificates before expiration
6. Review and test error handling
7. Update password policies as needed

Incident Response

Response Plan

1. Immediately revoke compromised credentials
2. Document and investigate the incident
3. Notify affected users if required
4. Implement additional security measures
5. Update security procedures based on lessons learned

Remember: Security is an ongoing process, not a one-time implementation. Regularly review and update your security practices to maintain the highest level of protection for your users.