---
title: "gss_decapsulate_token(_:_:_:)"
framework: GSS
role: symbol
role_heading: Function
platforms: [iOS 5.0+, iPadOS 5.0+, Mac Catalyst 13.1+, macOS 10.7+, visionOS 1.0+]
path: "gss/gss_decapsulate_token(_:_:_:)"
---

# gss_decapsulate_token(_:_:_:)

Returns a token encapsulated in a buffer.

## Declaration

```swift
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 doc://com.apple.gss/documentation/GSS/gss_release_buffer(_:_:) when you are done with it.

## Return Value

Return Value A status code set to GSS_S_COMPLETE on success. See Function Status for a complete enumeration of status outputs.

## Discussion

Discussion Use this function to reverse the encapsulation provided by gss_encapsulate_token(_:_:_:).

## See Also

### Encapsulation and Decapsulation

- [gss_encapsulate_token(_:_:_:)](gss/gss_encapsulate_token(_:_:_:).md)