Because you are working with sensitive financial data, we ensure that our Nuapay API is highly secure.
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We use API Keys to ensure the security of your sensitive data, which is transmitted via Secure Sockets Layer (SSL) over the HTTPS protocol.

For certain endpoints you must provide a JOSE Header in your requests. To do this you will need to create a private key and certificate and use these to generate the JOSE Header. See JSON Web Signature for more on this.