---
title: format
framework: security
role: symbol
role_heading: Instance Property
path: security/seckeychainattributeinfo/format
---

# format

A pointer to the first attribute format in the array.

## Declaration

```swift
var format: UnsafeMutablePointer<UInt32>?
```

## Discussion

Discussion Attribute formats are of type CSSM_DB_ATTRIBUTE_FORMAT (CSSM_DB_ATTRIBUTE_FORMAT_STRING, for example), and are defined in the cssmtype.h header.