---
title: CSSM_ALGID_ECDH_X963_KDF
framework: security
role: symbol
role_heading: Global Variable
path: security/cssm_algid_ecdh_x963_kdf
---

# CSSM_ALGID_ECDH_X963_KDF

## Declaration

```swift
var CSSM_ALGID_ECDH_X963_KDF: UInt32 { get }
```