Adyen 4.5.0 Encryption With JS

Deploy and Host helpful-acceptance on Railway

The Adyen 4.5.0 JavaScript library (adyen.encrypt.min.js) must be hosted and loaded into your web application. You have two options:

Host it yourself: Download the script and include it from your secure static asset domain.

Use Adyen’s CDN (deprecated for legacy versions): Earlier versions like 4.5.0 might require self-hosting for compliance and availability.

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Deploying the Adyen JS encryption library allows your frontend to:

Encrypt payment data in the browser before sending it to your backend or to Adyen.

Reduce PCI scope by never handling unencrypted card data on your servers.

Enable secure card payments through custom-built checkout flows.

In short, deploying this script is a critical part of creating a secure, PCI-compliant payment solution with Adyen's older integration method.

Common Use Cases

Custom Checkout Forms: For merchants who need full control over the UI/UX and cannot use Adyen's Drop-in or Components.

Legacy Systems: For existing systems built before the release of Adyen’s new checkout SDKs.

Server-Side Payment Routing: When you collect encrypted payment data to pass to your own backend for custom processing before calling Adyen’s APIs.

Deployment Dependencies

JavaScript Runtime (Browser): This library is pure JavaScript and runs entirely in the client browser.

RSA Public Key: Retrieved from Adyen’s Customer Area, specific to your merchant account.

HTTPS: You must serve your site and assets over HTTPS to avoid mixed content warnings and to ensure encryption security.

Modern Browser Support: While designed to work on a wide range of browsers, you should test for compatibility on older versions if applicable.

Build Tools (Optional): If you’re integrating into a modern frontend stack (like React, Vue, or Angular), you may need to wrap the library or import it manually into your build process.

Why Deploy

Deploying the Adyen JS encryption library allows your frontend to:

Encrypt payment data in the browser before sending it to your backend or to Adyen.

Reduce PCI scope by never handling unencrypted card data on your servers.

Enable secure card payments through custom-built checkout flows.

In short, deploying this script is a critical part of creating a secure, PCI-compliant payment solution with Adyen's older integration method.

Dependencies for

Using Adyen 4.5.0 Encryption with JS requires a few technical and operational dependencies to ensure secure and functional integration.

Frontend Environment A modern browser with JavaScript enabled.

Website must be served over HTTPS to maintain data security.

Adyen Public Key You must generate or retrieve a public encryption key from your Adyen Customer Area (specifically under API credentials → Client-Side Encryption).

This public key is embedded into the frontend code to allow encryption of card data.

JavaScript Library You must include adyen.encrypt.min.js (version 4.5.0) in your frontend code.

You may host this yourself or pull from a private static CDN.

This file must be available before any form encryption runs.

Form Fields with Proper Naming Required field names:

encryptedCardNumber

encryptedExpiryMonth

encryptedExpiryYear

encryptedSecurityCode

These values are generated from your raw inputs using Adyen's JS functions.

Optional Build Tools If you’re using a modern frontend framework (React, Vue, etc.), you'll need to either:

Inject the script dynamically,

Or manage encryption through a wrapper module.

Adyen Server-Side Integration Your backend must be able to handle encrypted fields and submit them using Adyen’s API (e.g., /payments endpoint).

These fields replace the raw card fields and must be passed as-is to Adyen.