---
title: certificationDeclaration
framework: mattersupport
role: symbol
role_heading: Instance Property
path: mattersupport/matteradddeviceextensionrequesthandler/devicecredential/certificationdeclaration
---

# certificationDeclaration

The device’s Certification Declaration as defined in the Matter specification.

## Declaration

```swift
var certificationDeclaration: Data
```

## See Also

### Getting the properties

- [deviceAttestationCertificate](mattersupport/matteradddeviceextensionrequesthandler/devicecredential/deviceattestationcertificate.md)
- [productAttestationIntermediateCertificate](mattersupport/matteradddeviceextensionrequesthandler/devicecredential/productattestationintermediatecertificate.md)