# Crypto Withdrawal

This [doc](https://exchanger-api.fuspay.finance/rsa/wallet-api.pdf) describes how to connect, authenticate and transmit data via Fuspay Wallet System Note: The Fuspay wallet system uses Rivest-Shamir-Adleman (RSA) asymmetric encryption to encrypt and decrypt data via REST API Connect 

To access the Fuspay wallet system, you need to download your RSA Digital certificates from your dashboard. The certificates are public and private certificate. 

To send data to Fuspay you need to encrypt the request payload with your public certificate and to get response from us, you need to decrypt the response with your private certificate. Also, you must whitelist your server IP address on our system before a successful call can be made. Authentication 

To authenticate, you need to add the header - 'your-fuspay-secret-key'. Remember to encrypt your request with your public key and decrypt it with your private key

**Please click on the link below to see the code samples and integrate seamlessly**

[Crypto withdrawal document using your API ](https://exchanger-api.fuspay.finance/rsa/wallet-api.pdf)