Generate a Public Private Key Pair {#uc-generate-keypair}
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You must generate a public-private key pair to upload to the `Unified Checkout` system. The public key is uploaded to the `Unified Checkout` platform and is used to encrypt sensitive information in transit. The private key is used to decrypt the sensitive payment information on your server. Only the private key can properly decrypt the payment information.
IMPORTANT You must secure your private decryption key. This key must never be exposed to any external systems or it will risk the integrity of the secure channel.  
`Unified Checkout` accepts only keys that meet these requirements:
* Only RSA keys are supported. Elliptical curves are not supported.
* The minimum accepted RSA key size is 2048 bits.
  * RSA keys must be in JWK format. More information on JWK format is available here:  
    [rfc7517](https://datatracker.ietf.org/doc/html/rfc7517 "").
* The key ID must be a valid UUID.