FinFusion

Security Guidelines

Security is critical for financial applications. Always follow these guidelines and keep your security measures up to date.

Authentication & Authorization

API Keys

// Initialize with API key
const finfusion = new FinFusion({
  apiKey: process.env.FINFUSION_API_KEY,
  environment: 'production',
  options: {
    timeout: 30000,
    retries: 3
  }
});

Best Practices

  • Rotate keys regularly
  • Use environment variables
  • Never commit keys to source control
  • Implement key expiration

OAuth 2.0

// OAuth token request
const token = await finfusion.auth.getToken({
  clientId: process.env.CLIENT_ID,
  clientSecret: process.env.CLIENT_SECRET,
  scope: ['payments', 'accounts', 'customers']
});

// Use token for requests
const client = new FinFusion({
  authToken: token,
  refreshToken: refreshToken,
  onTokenRefresh: (newToken) => {
    // Handle token refresh
  }
});

Data Encryption

Transport Layer Security

  • TLS 1.2 or higher required
  • Strong cipher suites
  • Certificate validation
  • Perfect forward secrecy

Data at Rest

// Encrypt sensitive data
const encryptedData = await finfusion.encryption.encrypt({
  data: sensitiveData,
  keyId: 'key_123',
  algorithm: 'AES-256-GCM'
});

// Decrypt data
const decryptedData = await finfusion.encryption.decrypt({
  data: encryptedData,
  keyId: 'key_123'
});

Compliance Requirements

PCI DSS Compliance

  • Secure network architecture
  • Strong access control
  • Regular security testing
  • Encryption of cardholder data 
// PCI-compliant card tokenization
const token = await finfusion.payments.tokenize({
  card: {
    number: '4111111111111111',
    expMonth: 12,
    expYear: 2024,
    cvv: '123'
  },
  tokenType: 'NETWORK_TOKEN',
  customerId: 'cust_123'
});

GDPR Compliance

  • Data minimization
  • Purpose limitation
  • Storage limitation
  • Data subject rights

Security Monitoring

Security Alerts

Authentication Failures

Threshold: 5 failures within 5 minutes

Action: Block IP address for 1 hour

Rate Limit Breaches

Threshold: 100 requests per minute exceeded

Action: Throttle requests and notify admin

Suspicious Patterns

Threshold: Unusual geographic access patterns

Action: Require additional verification

Logging Requirements

  • Authentication attempts
  • API key usage
  • Data access patterns
  • Error occurrences
  • System changes

Retention Period: Minimum 90 days

Regular security audits and penetration testing are recommended to ensure your integration remains secure.