index.md - mozsearch

Enable keyboard shortcuts

(mozilla-projects-nss-reference-fc-signfinal)=

# FC_SignFinal

## Name

:::{container}

FC_SignFinal - finish a multi-part signing operation.

:::

## Syntax

:::{container}

```{code}

CK_RV FC_SignFinal(

  CK_SESSION_HANDLE hSession,

  CK_BYTE_PTR pSignature,

  CK_ULONG_PTR pusSignatureLen

);

```

:::

## Parameters

:::{container}

`hSession`

: [in] session handle.

`pSignature`

: [out] pointer to the buffer which will receive the digest or NULL.

`pusSignatureLen`

: [in, out] pointer to location containing the maximum buffer size.

:::

## Description

:::{container}

`FC_SignFinal` finishes a multi-part signing operation by returning the complete signature and

clearing the operation context. If `pSignature` is NULL the length of the signature is returned

and `FC_SignFinal` may be called again with `pSignature` set to retrieve the signature.

A user must log into the token (to assume the NSS User role) before calling `FC_SignFinal`.

:::

## Return value

## Examples

## See also

:::{container}

- {ref}`mozilla-projects-nss-reference-fc-signupdate`, [NSC_SignFinal](/en-US/NSC_SignFinal)

:::