CryptoPkg/Library/BaseCryptLibRuntimeCryptProtocol/Rand/CryptRandNull.c

   1 /** @file
   2   Pseudorandom Number Generator Wrapper Implementation which does not provide
   3   real capabilities.
   4
   5 Copyright (c) 2012, Intel Corporation. All rights reserved.<BR>
   6 This program and the accompanying materials
   7 are licensed and made available under the terms and conditions of the BSD License
   8 which accompanies this distribution.  The full text of the license may be found at
   9 http://opensource.org/licenses/bsd-license.php
  10
  11 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  12 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  13
  14 **/
  15
  16 #include "InternalCryptLib.h"
  17
  18
  19 /**
  20   Sets up the seed value for the pseudorandom number generator.
  21
  22   Return FALSE to indicate this interface is not supported.
  23
  24   @param[in]  Seed      Pointer to seed value.
  25                         If NULL, default seed is used.
  26   @param[in]  SeedSize  Size of seed value.
  27                         If Seed is NULL, this parameter is ignored.
  28
  29   @retval FALSE  This interface is not supported.
  30
  31 **/
  32 BOOLEAN
  33 EFIAPI
  34 RandomSeed (
  35   IN  CONST  UINT8  *Seed  OPTIONAL,
  36   IN  UINTN         SeedSize
  37   )
  38 {
  39   ASSERT (FALSE);
  40   return FALSE;
  41 }
  42
  43 /**
  44   Generates a pseudorandom byte stream of the specified size.
  45
  46   Return FALSE to indicate this interface is not supported.
  47
  48   @param[out]  Output  Pointer to buffer to receive random value.
  49   @param[in]   Size    Size of random bytes to generate.
  50
  51   @retval FALSE  This interface is not supported.
  52
  53 **/
  54 BOOLEAN
  55 EFIAPI
  56 RandomBytes (
  57   OUT  UINT8  *Output,
  58   IN   UINTN  Size
  59   )
  60 {
  61   ASSERT (FALSE);
  62   return FALSE;
  63 }