Am example app to charge a credit card. Application explores the concept of cryptography, proxy and payment gateways based on a Flask API.

• Locker
• Proxy
• Payment Gateway

• Name on Card
• Credit Card Number
• Expiry Month, Expiry Year
• CVV

• Get public key from Locker
• Encrypt Credit Card Number with public key
• Post encrypted Credit Card to Locker
• Locker returns a token mapped with the Credit Card Number
• Post all data to Proxy along with the token
• Proxy sends request to Locker along with the token
• Locker de-tokenizes the token and sends request to Payment Gateway with actual Credit Card Number

python 3.5.2

pip install -r requirements.txt

python app.py

http:https://localhost:5000/

• All routes are registered in app.py
• API resource controllers are in resource_controller.py
• Front-end template is in templates/home.html
• Additional front-end resources are loaded through a CDN