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

# FC_VerifyInit

## [Name](#name)

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FC_VerifyInit - initialize a verification operation.

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## [Syntax](#syntax)

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```{code}

CK_RV FC_VerifyInit(

  CK_SESSION_HANDLE hSession,

  CK_MECHANISM_PTR pMechanism,

  CK_OBJECT_HANDLE hKey

);

```

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## [Parameters](#parameters)

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`hSession`

: [in] session handle.

`pMechanism`

: [in] mechanism to be used for the verification operation.

`hKey`

: [in] handle of the key to be used.

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## [Description](#description)

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`FC_VerifyInit` initializes a verification operation where the signature is an appendix to the

data.

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

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## [Return value](#return_value)

## [Examples](#examples)

## [See also](#see_also)

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- [NSC_VerifyInit](/en-US/NSC_VerifyInit)

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