---
name: "CryptGenRandom"
section: "3w"
platform: "linux"
package: "libwine-dev"
version: "1.4.1-4"
release: "Debian 7 (Wheezy)"
platforms: ["linux"]
url: "https://new.carta.tech/CryptGenRandom"
---

# CryptGenRandom(3w)

## NAME

**CryptGenRandom** (ADVAPI32.@)

## SYNOPSIS

BOOL CryptGenRandom\
  (\
   HCRYPTPROV *hProv*,\
   DWORD      *dwLen*,\
   BYTE\*      *pbBuffer*\
  )

## DESCRIPTION

Fills a buffer with cryptographically random bytes.

## PARAMS

*hProv* **\[In\]**  Handle of a **CSP**.

*dwLen* **\[In\]**  Number of bytes to generate.

*pbBuffer* **\[In/Out\]**  Buffer to contain random bytes.

## RETURNS

**Success:** **TRUE**

**Failure:** **FALSE**.

## NOTES

pdBuffer must be at least *dwLen* bytes long.

## IMPLEMENTATION

Declared in **"wincrypt.h"**.

Implemented in **"dlls/advapi32/crypt.c"**.

Debug channel **"crypt"**.