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# SecKeychainAttribute

A structure that holds a single keychain attribute.

```
struct SecKeychainAttribute
```

## Topics

### Instance Properties

[`data`](/documentation/Security/SecKeychainAttribute/data)

A pointer to the attribute data.

[`length`](/documentation/Security/SecKeychainAttribute/length)

The length of the buffer pointed to by data.

[`tag`](/documentation/Security/SecKeychainAttribute/tag)

A 4-byte attribute tag.

### Initializers

[`init()`](/documentation/Security/SecKeychainAttribute/init())

[`init(tag:length:data:)`](/documentation/Security/SecKeychainAttribute/init(tag:length:data:))


---

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