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   { HASH_ALGORITHM_SM3_256_GUID, HASH_ALG_SM3_256 },
  29 };
  30
  31 /**
  32   The function get hash mask info from algorithm.
  33
  34   @param HashGuid Hash Guid
  35
  36   @return HashMask
  37 **/
  38 UINT32
  39 EFIAPI
  40 Tpm2GetHashMaskFromAlgo (
  41   IN EFI_GUID  *HashGuid
  42   )
  43 {
  44   UINTN  Index;
  45
  46   for (Index = 0; Index < sizeof (mTpm2HashMask)/sizeof (mTpm2HashMask[0]); Index++) {
  47     if (CompareGuid (HashGuid, &mTpm2HashMask[Index].Guid)) {
  48       return mTpm2HashMask[Index].Mask;
  49     }
  50   }
  51
  52   return 0;
  53 }
  54
  55 /**
  56   The function set digest to digest list.
  57
  58   @param DigestList digest list
  59   @param Digest     digest data
  60 **/
  61 VOID
  62 EFIAPI
  63 Tpm2SetHashToDigestList (
  64   IN OUT TPML_DIGEST_VALUES  *DigestList,
  65   IN TPML_DIGEST_VALUES      *Digest
  66   )
  67 {
  68   CopyMem (
  69     &DigestList->digests[DigestList->count],
  70     &Digest->digests[0],
  71     sizeof (Digest->digests[0])
  72     );
  73   DigestList->count++;
  74 }