---
title: CSSM_ALGID_ConcatKeyAndBase
framework: security
role: symbol
role_heading: Global Variable
path: security/cssm_algid_concatkeyandbase
---

# CSSM_ALGID_ConcatKeyAndBase

## Declaration

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