Card Data Encryption - Standalone Tokenization APIs

This script is used to encrypt card details and decrypt the API response using JWE encryption for standalone API testing. It is primarily used when calling APIs that require encrypted card data, such as Generate Token and Get Alt ID APIs.

Step 1: Card Data Preparation

Prepare your card payload in JSON format:

Step 2: Encrypt Card Data

Use the public key to encrypt the above payload. Here’s a simple Python script:

JWE Encryption / Decryption Script – Setup & Run GuideThis script encrypts and decrypts card payloads using JWE (JSON Web Encryption) with the RSA-OAEP-256 algorithm and A128GCM encryption.It uses the Python library jwcrypto.

Prerequisites:

Make sure the following are installed.

1.Python

Python 3.8+ recommended

Check version:

2.Install Required Library

Install jwcrypto:

3.Required Files

You need the following keys:

FilePurpose:

Public Key (.pem):Used for encryption
Private Key (.pem)Used for decryption


4. Update Key Paths in Script

Update the Juspay public key path inside the encrypt function.

Replace:

recipient=loadPem('publickeyfilelocation')

with:

recipient=loadPem('/path/to/publicKey.pem')

---

Update the private key path inside the decrypt function.

Replace:

loadPem('privateKeylocation')

with:

loadPem('/path/to/privateKey.pem')

Step 3:Script:

Download Juspay Public Key

Use the following public keys to encrypt card details before sending requests to Juspay APIs.

Sandbox

Download the Juspay Sandbox Public Key for testing environments.

Production

Download the Juspay Production Public Key for production environments.