---
title: largeBlob
framework: authenticationservices
role: symbol
role_heading: Instance Property
path: authenticationservices/aspasskeyassertioncredentialextensioninput-swift.struct/largeblob
---

# largeBlob

Input for the WebAuthn large binary object extension in passkey assertion requests.

## Declaration

```swift
var largeBlob: ASAuthorizationPublicKeyCredentialLargeBlobAssertionInput? { get }
```

## See Also

### Using inputs

- [prf](authenticationservices/aspasskeyassertioncredentialextensioninput-swift.struct/prf.md)