PrestaShop Payment Module Development
Enabling secure payment processing in PrestaShop for a project with full PCI DSS and 3D Secure compliance, including hosted and embedded checkout experiences, webhook automation, and complete payment lifecycle management.
Overview
The payment solution implemented for this project supports major card schemes, digital wallets, multi-currency payments, and strong payment security controls.
PrestaShop had no native integration for this payment provider, preventing merchants from accepting payments without custom development. We built a full custom PrestaShop module that integrates directly with the gateway REST API.
- Native custom payment option inside PrestaShop checkout
- Hosted and embedded checkout modes supported
- Secure SHA-256 HMAC transaction verification
- Webhook-driven payment confirmation and order synchronization
- 3D Secure authentication and PSD2 SCA compliance
- Admin-side refund and configuration management
The result is a secure and scalable payment integration aligned with PCI DSS, PSD2, and operational requirements for UK merchants using this payment provider.
The Challenges
No Native PrestaShop Integration
There was no official or ready-made PrestaShop module for this payment gateway, requiring a complete custom implementation.
Complex API and Security Requirements
The REST integration needed secure transaction initialization, SHA-256 HMAC generation, credential management, and trusted request verification.
PCI DSS and Data Handling Constraints
The module had to ensure cardholder data never touched merchant servers while preserving a smooth customer checkout experience.
3D Secure, PSD2, and SCA Compliance
The integration had to support authentication redirects, callback validation, and secure post-auth payment processing logic.
Order and Refund Automation
Payment status changes needed to sync automatically with PrestaShop orders, stock, customer communication, and admin refund operations.
The Solution
We developed a custom PrestaShop module integrated with gateway REST APIs and secure infrastructure, covering payment initiation, verification, authentication, webhooks, and refund lifecycle management.
Native PrestaShop Payment Module
The payment option appears natively in PrestaShop checkout and integrates cleanly with cart validation, order creation, payment processing, status transitions, and customer notifications.
Payment Gateway REST API Integration
- Secure transaction initialization with amount, currency, merchant metadata, timestamps, and customer details
- REST API key and secret-based authentication
- Hosted checkout redirect and embedded Payment.JS support
- Webhook endpoint processing for asynchronous outcomes
SHA-256 HMAC Transaction Security
- Request authenticity checks
- Tamper detection for critical transaction payloads
- Integrity verification before order state updates
Hosted and Embedded Checkout Experiences
Merchants can configure either hosted payment page mode or embedded Payment.JS mode based on UX preference and compliance strategy.
3D Secure and PSD2 SCA Compliance
- Strong Customer Authentication support
- 3D Secure challenge and callback handling
- PSD2-compliant authentication lifecycle
Automated Order Lifecycle and Refund Management
- Successful payments update order status, trigger confirmation emails, and decrement stock
- Failed payments mark orders accordingly and return customers with clear messaging
- Admin panel refunds with status tracking and gateway synchronization
System Architecture
Frontend Layer
PrestaShop checkout, optional embedded Payment.JS, and jQuery UI enhancements.
Application Layer
Custom PrestaShop module, payment controllers, order engine, and refund manager.
Security Layer
SHA-256 HMAC verification, tokenization, 3D Secure authentication, and PCI DSS-aligned flow.
Integration Layer
Gateway REST API, secure payment infrastructure, and webhook processing endpoints.
Data Layer
MySQL-backed transaction logs, payment status records, and secure configuration storage.
Results & Impact
Gateway in PrestaShop Checkout
HMAC Verification Layer
Compliant Payment Flow
SCA and PSD2 Compliance
Webhook Order Management
Directly from Admin Panel
Business Impact
Enabled PrestaShop merchants to accept payments natively within a project without relying on external or unsupported checkout workarounds.
Reduced operational overhead with webhook-driven payment updates, automated order status synchronization, and clearer transaction visibility for support teams.
Improved customer trust and checkout completion with 3D Secure authentication, PCI DSS-aligned processing, and strong request integrity verification via SHA-256 HMAC.
Gave merchants full payment lifecycle control from the PrestaShop admin panel, including configuration flexibility, hosted or embedded checkout modes, and synchronized refunds.
Technology Stack
Final Outcome
Before
- No official support for this payment gateway in PrestaShop
- Manual payment reconciliation and order updates
- No built-in hosted vs embedded checkout flexibility
- Higher compliance burden without a tailored secure integration
After
- Native custom payment option in PrestaShop checkout
- Automated status updates, emails, and inventory synchronization
- Hosted and embedded Payment.JS checkout support
- Secure processing with SHA-256 HMAC verification and 3D Secure coverage
The PrestaShop payment module gives merchants a secure and scalable payment stack tailored to UK compliance needs. By combining gateway REST API integration, SHA-256 HMAC verification, 3D Secure authentication, webhook automation, and admin refund controls, the solution enables confident payment operations directly inside PrestaShop.
Need a Custom Payment Gateway Integration?
Whether you are integrating a bank gateway, building a custom checkout, or developing a secure payment module for your eCommerce stack, we can deliver compliant and scalable payment systems.
Let's Build Your Payment SolutionFrequently Asked Questions
The solution was delivered as a implementation, so the public case study avoids exposing the original payment brand name.
No. A custom module was required for native integration.
Yes. Sensitive card data stays within secure gateway infrastructure.
Yes. The module supports 3D Secure and PSD2 SCA requirements.
Yes. Merchants can configure hosted payment page or embedded Payment.JS checkout.
Webhooks automate status updates, customer notifications, and inventory sync.
Yes. Refunds can be initiated from PrestaShop admin and synchronized with the gateway.
Yes. It is designed for UK merchants using this payment provider.