# KnownExtensions

Artifact: [androidx.credentials.providerevents:providerevents](https://developer.android.com/jetpack/androidx/releases/credentials-providerevents) [View Source](https://cs.android.com/search?q=file:androidx/credentials/providerevents/transfer/KnownExtensions.kt+class:androidx.credentials.providerevents.transfer.KnownExtensions) Added in [1.0.0-beta01](https://developer.android.com/jetpack/androidx/releases/credentials-providerevents#1.0.0-beta01)

*** ** * ** ***


```
object KnownExtensions
```

<br />

*** ** * ** ***

The known extensions that can be transferred as part of the FIDO Credential Exchange Format (CXF). More about these types can found [here](https://fidoalliance.org/specs/cx/cxf-v1.0-ps-20250814.html#sctn-iana-extension-registry). The constants defined in this class list the frequently used extensions in CXF, and are not intended to be the exhaustive list.

## Summary

| ### Constants |
|---|---|
| `const https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-string/index.html` | `https://developer.android.com/reference/kotlin/androidx/credentials/providerevents/transfer/KnownExtensions#KNOWN_EXTENSION_SHARED()` An extension defining how an entity is shared across user accounts. |

## Constants

### KNOWN_EXTENSION_SHARED

Added in [1.0.0-beta01](https://developer.android.com/jetpack/androidx/releases/credentials-providerevents#1.0.0-beta01)

```
const val KNOWN_EXTENSION_SHARED: String
```

An extension defining how an entity is shared across user accounts.