Secure payment using RSA algorithm

My project is basically a customer paying for goods using the merchants website, the information he adds which is basically private information such as credit card details name etc, should be hidden using the rsa algorithm, the bank then sends an otp to the customer asking whether the transaction was done by them or not. During this process, any information sent by the customer should be hidden using the rsa algorithm and can only be decrypted by the bank/merchant.