---
title: "sec_protocol_options_set_tls_diffie_hellman_parameters(_:_:)"
framework: security
role: symbol
role_heading: Function
path: "security/sec_protocol_options_set_tls_diffie_hellman_parameters(_:_:)"
---

# sec_protocol_options_set_tls_diffie_hellman_parameters(_:_:)

## Declaration

```swift
func sec_protocol_options_set_tls_diffie_hellman_parameters(_ options: sec_protocol_options_t, _ params: dispatch_data_t)
```

## Parameters

- `options`: A sec_protocol_options_t instance.
- `params`: A dispatch_data_t containing legacy Diffie-Hellman parameters.

## Discussion

Discussion Set the supported Diffie-Hellman parameters.