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

# FC_VerifyFinal

## [Name](#name)

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FC_VerifyFinal - finish a multi-part verify operation.
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## [Syntax](#syntax)

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```{code}
CK_RV FC_VerifyFinal(
  CK_SESSION_HANDLE hSession,
  CK_BYTE_PTR pSignature,
  CK_ULONG usSignatureLen
);
```

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## [Parameters](#parameters)

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`hSession`

: [in] session handle.

`pSignature`

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

`usSignatureLen`

: [in] length of the signature in bytes.
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## [Description](#description)

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`FC_VerifyFinal` finishes a multi-part signature verification operation.

A user must log into the token (to assume the NSS User role) before calling `FC_VerifyFinal`.
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## [Return value](#return_value)

## [Examples](#examples)

## [See also](#see_also)

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- {ref}`mozilla_projects_nss_reference_fc_verifyupdate`,
  [NSC_VerifyFinal](/en-US/NSC_VerifyFinal)
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