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# gss_decapsulate_token(_:_:_:)

Returns a token encapsulated in a buffer.

```
func gss_decapsulate_token(_ input_token: gss_const_buffer_t, _ oid: gss_const_OID, _ output_token: gss_buffer_t) -> OM_uint32
```

## Parameters

`input_token`

A buffer holding the encapsulated token.

`oid`

The expected object identifier of the token.

`output_token`

A buffer the function fills with the decapsulated token data. Release this buffer’s memory with a call to [`gss_release_buffer(_:_:)`](/documentation/GSS/gss_release_buffer(_:_:)) when you are done with it.

## Return Value

A status code set to [`GSS_S_COMPLETE`](/documentation/GSS/GSS_S_COMPLETE) on success. See [Function Status](/documentation/GSS/function-status) for a complete enumeration of status outputs.

## Discussion

Use this function to reverse the encapsulation provided by [`gss_encapsulate_token(_:_:_:)`](/documentation/GSS/gss_encapsulate_token(_:_:_:)).

---

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