# PaymentEncryptionDukptMode

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

The DUKPT key derivation algorithm a key entry uses.

## Values

| Value | Description |
| --- | --- |
| `Tdes` | Triple DES DUKPT (ANSI X9.24 Part 1). |
| `Aes` | AES DUKPT (ANSI X9.24 Part 3). Carries a working-key type alongside it. |

## See also

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