---
title: "init(largeBlob:prf:)"
framework: authenticationservices
role: symbol
role_heading: Initializer
path: "authenticationservices/aspasskeyassertioncredentialextensionoutput-swift.struct/init(largeblob:prf:)"
---

# init(largeBlob:prf:)

Creates an extension output instance.

## Declaration

```swift
init(largeBlob: ASAuthorizationPublicKeyCredentialLargeBlobAssertionOutput? = nil, prf: ASAuthorizationPublicKeyCredentialPRFAssertionOutput? = nil)
```