---
title: kSecOIDX509V1SignatureAlgorithmTBS
framework: security
role: symbol
role_heading: Global Variable
path: security/ksecoidx509v1signaturealgorithmtbs
---

# kSecOIDX509V1SignatureAlgorithmTBS

## Declaration

```swift
let kSecOIDX509V1SignatureAlgorithmTBS: CFString
```