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

# FC_GenerateRandom

## [Name](#name)

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FC_GenerateRandom - generate a random number.

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## [Syntax](#syntax)

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```{code}

CK_RV FC_GenerateRandom(

  CK_SESSION_HANDLE hSession,

  CK_BYTE_PTR pRandomData,

  CK_ULONG ulRandomLen

);

```

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## [Parameters](#parameters)

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`hSession`

: [in] session handle.

`pRandomData`

: [out] pointer to the location to receive the random data.

`ulRandomLen`

: [in] length of the buffer in bytes.

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## [Description](#description)

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`FC_GenerateRandom` generates random data of the specified length.

A user may call `FC_GenerateRandom` without logging into the token (to assume the NSS User

role).

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## [Return value](#return_value)

## [Examples](#examples)

## [See also](#see_also)

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

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