---
title: CSSM_ALGID_SHA1HMAC_LEGACY
framework: security
role: symbol
role_heading: Global Variable
path: security/cssm_algid_sha1hmac_legacy
---

# CSSM_ALGID_SHA1HMAC_LEGACY

## Declaration

```swift
var CSSM_ALGID_SHA1HMAC_LEGACY: UInt32 { get }
```