SecurityPkg/Library/HashLibBaseCryptoRouter/HashLibBaseCryptoRouterCommon.c

   1 /** @file
   2   This is BaseCrypto router support function.
   3
   4 Copyright (c) 2013 - 2016, Intel Corporation. All rights reserved. <BR>
   5 SPDX-License-Identifier: BSD-2-Clause-Patent
   6
   7 **/
   8
   9 #include <PiPei.h>
  10 #include <Library/BaseLib.h>
  11 #include <Library/BaseMemoryLib.h>
  12 #include <Library/Tpm2CommandLib.h>
  13 #include <Library/DebugLib.h>
  14 #include <Library/MemoryAllocationLib.h>
  15 #include <Library/HashLib.h>
  16 #include <Protocol/Tcg2Protocol.h>
  17
  18 typedef struct {
  19   EFI_GUID  Guid;
  20   UINT32    Mask;
  21 } TPM2_HASH_MASK;
  22
  23 TPM2_HASH_MASK mTpm2HashMask[] = {
  24   {HASH_ALGORITHM_SHA1_GUID,         HASH_ALG_SHA1},
  25   {HASH_ALGORITHM_SHA256_GUID,       HASH_ALG_SHA256},
  26   {HASH_ALGORITHM_SHA384_GUID,       HASH_ALG_SHA384},
  27   {HASH_ALGORITHM_SHA512_GUID,       HASH_ALG_SHA512},
  28 };
  29
  30 /**
  31   The function get hash mask info from algorithm.
  32
  33   @param HashGuid Hash Guid
  34
  35   @return HashMask
  36 **/
  37 UINT32
  38 EFIAPI
  39 Tpm2GetHashMaskFromAlgo (
  40   IN EFI_GUID  *HashGuid
  41   )
  42 {
  43   UINTN  Index;
  44   for (Index = 0; Index < sizeof(mTpm2HashMask)/sizeof(mTpm2HashMask[0]); Index++) {
  45     if (CompareGuid (HashGuid, &mTpm2HashMask[Index].Guid)) {
  46       return mTpm2HashMask[Index].Mask;
  47     }
  48   }
  49   return 0;
  50 }
  51
  52 /**
  53   The function set digest to digest list.
  54
  55   @param DigestList digest list
  56   @param Digest     digest data
  57 **/
  58 VOID
  59 EFIAPI
  60 Tpm2SetHashToDigestList (
  61   IN OUT TPML_DIGEST_VALUES *DigestList,
  62   IN TPML_DIGEST_VALUES     *Digest
  63   )
  64 {
  65   CopyMem (
  66     &DigestList->digests[DigestList->count],
  67     &Digest->digests[0],
  68     sizeof(Digest->digests[0])
  69     );
  70   DigestList->count ++;
  71 }