---
title: "init(tag:length:data:)"
framework: security
role: symbol
role_heading: Initializer
path: "security/seckeychainattribute/init(tag:length:data:)"
---

# init(tag:length:data:)

## Declaration

```swift
init(tag: SecKeychainAttrType, length: UInt32, data: UnsafeMutableRawPointer?)
```