---
title: kSecPaddingKey
framework: security
role: symbol
role_heading: Global Variable
path: security/ksecpaddingkey
---

# kSecPaddingKey

The kind of padding to use.

## Declaration

```swift
let kSecPaddingKey: CFString
```

## Discussion

Discussion If you do not supply a value for this key, an appropriate value will be supplied for you. See Padding Types for a list of valid values.