SecurityPkg/Library/HashLibBaseCryptoRouter/HashLibBaseCryptoRouterCommon.c

   1 /** @file
   2   Ihis is BaseCrypto router support function.
   3
   4 Copyright (c) 2013, 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 <PiPei.h>
  16 #include <Library/BaseLib.h>
  17 #include <Library/BaseMemoryLib.h>
  18 #include <Library/Tpm2CommandLib.h>
  19 #include <Library/DebugLib.h>
  20 #include <Library/MemoryAllocationLib.h>
  21 #include <Library/HashLib.h>
  22 #include <Protocol/TrEEProtocol.h>
  23
  24 typedef struct {
  25   EFI_GUID  Guid;
  26   UINT32    Mask;
  27 } TPM2_HASH_MASK;
  28
  29 TPM2_HASH_MASK mTpm2HashMask[] = {
  30   {HASH_ALGORITHM_SHA1_GUID,         TREE_BOOT_HASH_ALG_SHA1},
  31   {HASH_ALGORITHM_SHA256_GUID,       TREE_BOOT_HASH_ALG_SHA256},
  32   {HASH_ALGORITHM_SHA384_GUID,       TREE_BOOT_HASH_ALG_SHA384},
  33   {HASH_ALGORITHM_SHA512_GUID,       TREE_BOOT_HASH_ALG_SHA512},
  34 };
  35
  36 /**
  37   The function get hash mask info from algorithm.
  38
  39   @param HashGuid Hash Guid
  40
  41   @return HashMask
  42 **/
  43 UINT32
  44 EFIAPI
  45 Tpm2GetHashMaskFromAlgo (
  46   IN EFI_GUID  *HashGuid
  47   )
  48 {
  49   UINTN  Index;
  50   for (Index = 0; Index < sizeof(mTpm2HashMask)/sizeof(mTpm2HashMask[0]); Index++) {
  51     if (CompareGuid (HashGuid, &mTpm2HashMask[Index].Guid)) {
  52       return mTpm2HashMask[Index].Mask;
  53     }
  54   }
  55   return 0;
  56 }
  57
  58 /**
  59   The function set digest to digest list.
  60
  61   @param DigestList digest list
  62   @param Digest     digest data
  63 **/
  64 VOID
  65 EFIAPI
  66 Tpm2SetHashToDigestList (
  67   IN OUT TPML_DIGEST_VALUES *DigestList,
  68   IN TPML_DIGEST_VALUES     *Digest
  69   )
  70 {
  71   CopyMem (
  72     &DigestList->digests[DigestList->count],
  73     &Digest->digests[0],
  74     sizeof(Digest->digests[0])
  75     );
  76   DigestList->count ++;
  77 }