---
title: kSecOIDX509V1CertificateSubjectUniqueId
framework: security
role: symbol
role_heading: Global Variable
path: security/ksecoidx509v1certificatesubjectuniqueid
---

# kSecOIDX509V1CertificateSubjectUniqueId

## Declaration

```swift
let kSecOIDX509V1CertificateSubjectUniqueId: CFString
```