---
title: kSecKeyStartDate
framework: security
role: symbol
role_heading: Global Variable
path: security/kseckeystartdate
---

# kSecKeyStartDate

Type CSSM_DATE.  Earliest date at which this key may be used.  If the value is all zeros or not present, no restriction applies.

## Declaration

```swift
var kSecKeyStartDate: Int32 { get }
```