---
title: CSSM_PKCS5_PBKDF2_PRF_HMAC_SHA1
framework: security
role: symbol
role_heading: Global Variable
path: security/cssm_pkcs5_pbkdf2_prf_hmac_sha1
---

# CSSM_PKCS5_PBKDF2_PRF_HMAC_SHA1

## Declaration

```swift
var CSSM_PKCS5_PBKDF2_PRF_HMAC_SHA1: Int { get }
```