# PaymentEncryptionScheme

A model the API reference uses in a request or a response. The operation pages link every field typed as this model here.

The terminal-side encryption scheme a payload was produced with.

## Values

| Value | Description |
| --- | --- |
| `Dukpt` | Generic DUKPT (ANSI X9.24 data variant), TDES or AES. |
| `OnGuard` | The Ingenico On-Guard protocol. |

## See also

- [All documentation](https://devportal.demo.winkpg.io/llms.txt): the machine-readable index of every public page on this site.