---
title: "write(_:)"
framework: authenticationservices
role: symbol
role_heading: Type Method
path: "authenticationservices/asauthorizationpublickeycredentiallargeblobassertioninput-swift.struct/write(_:)"
---

# write(_:)

An operation to write the blob value, overwriting any existing value.

## Declaration

```swift
static func write(_ data: Data) -> ASAuthorizationPublicKeyCredentialLargeBlobAssertionInput
```

## Parameters

- `data`: The data to write.

## See Also

### Using assertion inputs

- [read](authenticationservices/asauthorizationpublickeycredentiallargeblobassertioninput-swift.struct/read.md)