---
title: kSecOIDX509V1SignatureAlgorithmParameters
framework: security
role: symbol
role_heading: Global Variable
path: security/ksecoidx509v1signaturealgorithmparameters
---

# kSecOIDX509V1SignatureAlgorithmParameters

## Declaration

```swift
let kSecOIDX509V1SignatureAlgorithmParameters: CFString
```