CryptoPkg/Application/Cryptest/RandVerify.c

   1 /** @file
   2   Application for Pseudorandom Number Generator Validation.
   3
   4 Copyright (c) 2010, Intel Corporation. All rights reserved.<BR>
   5 This program and the accompanying materials
   6 are licensed and made available under the terms and conditions of the BSD License
   7 which accompanies this distribution.  The full text of the license may be found at
   8 http://opensource.org/licenses/bsd-license.php
   9
  10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13 **/
  14
  15 #include "Cryptest.h"
  16
  17 #define  RANDOM_NUMBER_SIZE  256
  18
  19 CONST  UINT8  SeedString[] = "This is the random seed for PRNG verification.";
  20
  21 UINT8  PreviousRandomBuffer[RANDOM_NUMBER_SIZE] = { 0x0 };
  22
  23 UINT8  RandomBuffer[RANDOM_NUMBER_SIZE] = { 0x0 };
  24
  25 /**
  26   Validate UEFI-OpenSSL pseudorandom number generator interfaces.
  27
  28   @retval  EFI_SUCCESS  Validation succeeded.
  29   @retval  EFI_ABORTED  Validation failed.
  30
  31 **/
  32 EFI_STATUS
  33 ValidateCryptPrng (
  34   VOID
  35   )
  36 {
  37   UINTN    Index;
  38   BOOLEAN  Status;
  39
  40   Print (L" \nUEFI-OpenSSL PRNG Engine Testing:\n");
  41
  42   Print (L"- Random Generation...");
  43
  44   Status = RandomSeed (SeedString, sizeof (SeedString));
  45   if (!Status) {
  46     Print (L"[Fail]");
  47     return EFI_ABORTED;
  48   }
  49
  50   for (Index = 0; Index < 10; Index ++) {
  51     Status = RandomBytes (RandomBuffer, RANDOM_NUMBER_SIZE);
  52     if (!Status) {
  53       Print (L"[Fail]");
  54       return EFI_ABORTED;
  55     }
  56
  57     if (CompareMem (PreviousRandomBuffer, RandomBuffer, RANDOM_NUMBER_SIZE) == 0) {
  58       Print (L"[Fail]");
  59       return EFI_ABORTED;
  60     }
  61
  62     CopyMem (PreviousRandomBuffer, RandomBuffer, RANDOM_NUMBER_SIZE);
  63   }
  64
  65   Print (L"[Pass]\n");
  66
  67   return EFI_SUCCESS;
  68
  69 }