GreenPay Payment Service

Accept card payments directly on your WooCommerce store with GreenPay Payment Service.

GreenPay Payment Service is a comprehensive payment gateway plugin that allows you to accept credit and debit card payments in Central America. The plugin integrates seamlessly with WooCommerce to provide a secure, PCI-compliant payment solution.

Key Features

• Multiple Card Types Support

  • Visa
  • MasterCard
  • American Express

• Advanced Security

  • 3D Secure (3DS) authentication
  • PCI-compliant payment processing
  • Encrypted data transmission

• Multi-Currency Support

  • USD (United States Dollar)
  • CRC (Costa Rican Colón)

• Special Features

  • Tasa 0 (0% interest installment payments)
  • One-click checkout for returning customers
  • Multiple terminal IDs per currency

• Developer Friendly

  • REST API endpoints
  • WooCommerce Blocks support
  • Webhook notifications
  • Extensive filter hooks
  • Detailed logging

External Services

This plugin connects to external services provided by GreenPay to process payments securely. By using this plugin, you acknowledge and agree that the following external resources are loaded and data is transmitted to GreenPay servers.

JavaScript Libraries Loaded:

The plugin automatically loads the following JavaScript libraries from GreenPay’s CDN during the checkout process:

1. AES Encryption Library (static.greenpay.me/aes-js)

   • Purpose: Encrypts sensitive credit card data (card number, CVV, expiration date) before transmission
   • When loaded: On checkout pages when payment form is displayed
   • Data sent: Encrypted credit card information, no plaintext card data ever leaves the browser unencrypted

2. JSEncrypt Library (static.greenpay.me/jsencrypt)

   • Purpose: RSA public key encryption for secure communication with GreenPay payment servers
   • When loaded: On checkout pages when payment form is displayed
   • Data sent: Public key encrypted payment credentials and session tokens

3. GDataCollector (static.greenpay.me/collector/GDataCollector.min.js)

   • Purpose: Collects device fingerprinting data for fraud detection and prevention
   • When loaded: On checkout pages when payment form is displayed
   • Data sent: Browser metadata (user agent, screen resolution, timezone, language), device information, IP address (collected by GreenPay servers)

4. GreenPay Data Collector (script-collector.greenpay.me/gpDataCollector.min.js)

   • Purpose: Additional fraud prevention and risk assessment data collection
   • When loaded: On checkout pages when payment form is displayed
   • Data sent: Transaction metadata, session information, and anonymized behavioral analytics

What Data is Transmitted:

When a customer makes a payment, the following data is sent to GreenPay servers:
– Encrypted credit card details (card number, CVV, expiration date, cardholder name)
– Order amount and currency
– Customer billing information (name, address, email)
– Device fingerprinting data for fraud prevention
– Transaction metadata (order ID, merchant ID, terminal ID)

When Data is Sent:

Data transmission occurs:
– When customer loads the checkout page (device fingerprinting scripts)
– When customer submits payment information (encrypted payment data)
– When webhooks are triggered for payment status updates (order information)

Privacy and Legal Information:

This service is provided by GreenPay, a payment processor operating in Central America.

• Service Provider: GreenPay (greenpay.me)
• Terms of Service: https://greenpay.me/terms
• Privacy Policy: https://greenpay.me/privacy
• Data Processing: All payment data is processed in accordance with PCI DSS standards
• Data Storage: Payment tokens and transaction records are stored securely by GreenPay

By using this plugin, you agree to GreenPay’s terms and acknowledge that customer payment data will be transmitted to and processed by GreenPay’s servers. You are responsible for informing your customers about this data transmission in your site’s privacy policy.

Supported Countries

GreenPay operates in the following Central American countries:

• Costa Rica
• Guatemala
• Panama
• Nicaragua

Requirements

• WordPress 6.8 or higher
• WooCommerce 9.5 or higher
• PHP 8.2 or higher
• SSL certificate (recommended)
• GreenPay merchant account (Sign up here)

Automatic Installation

1. Log in to your WordPress admin panel
2. Go to Plugins > Add New
3. Search for “GreenPay Payment Service”
4. Click Install Now button
5. Click Activate button

Manual Installation

1. Download the plugin ZIP file
2. Log in to your WordPress admin panel
3. Go to Plugins > Add New > Upload Plugin
4. Choose the downloaded ZIP file
5. Click Install Now
6. Click Activate Plugin

Configuration

1. Obtain GreenPay Credentials

Before configuring the plugin, you need:

• Merchant ID – Your unique merchant identifier
• Secret Key – Your merchant secret key
• Public Key – Your public encryption key
• Terminal IDs – One or more terminal IDs for different currencies

Sandbox credentials: Sign up here
Production credentials: Contact sales

2. Configure Plugin Settings

1. Go to WooCommerce > Settings > Payments
2. Find GreenPay Payment Service and click Manage
3. Configure the following settings:

General Settings:

• Enable/Disable – Check to enable the payment method
• Title – Name displayed to customers (default: “Credit/Debit Card”)
• Description – Payment method description shown at checkout

API Credentials:

• Environment – Select Sandbox (testing) or Production (live)
• Merchant ID – Enter your merchant ID
• Secret Key – Enter your secret key
• Public Key – Enter your public key

Terminal Configuration:
For each currency you want to accept:

• Terminal ID (USD) – Terminal for US Dollar transactions
• Terminal ID (CRC) – Terminal for Costa Rican Colón

Advanced Settings:

• Enable 3D Secure – Recommended for fraud protection
• Enable Logging – Log transactions for debugging

1. Click Save changes

3. Test the Integration

1. Set Environment to Sandbox
2. Use test card numbers (provided by GreenPay)
3. Place a test order
4. Verify payment processes correctly
5. Check WooCommerce order status updates

4. Go Live

1. Obtain production credentials from GreenPay
2. Set Environment to Production
3. Enter production Merchant ID, Secret Key, and Public Key
4. Configure production Terminal IDs
5. Test with a small real transaction
6. Monitor first few live transactions

1. 

   Plugin Settings - WooCommerce payment gateway configuration page

2. 

   Checkout Form - Customer view of payment form with card fields

3. 

   3D Secure Modal - Bank verification popup for 3DS authentication

4. 

   Saved Payment Methods - Customer account page showing saved cards

1.0.0 – 2025-11-14

• Initial release of GreenPay Payment Service
• Added WooCommerce Blocks support
• Added 3D Secure authentication
• Added multi-currency support
• Compliance: Added comprehensive external services documentation
• Security: Enhanced nonce verification logic with separate validation checks
• Security: Added sanitization for $_SERVER variables in webhook handler
• Security: Added extensive documentation for encrypted payment data handling
• Security: Added validation for form field arrays before processing
• Compatibility: Replaced deprecated FILTER_SANITIZE_STRING with WordPress sanitization functions
• Enhancement: Improved code documentation explaining security exceptions
• Fix: All WordPress.org plugin review issues addressed