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   for (Index = 0; Index < sizeof(mTpm2HashMask)/sizeof(mTpm2HashMask[0]); Index++) {
  46     if (CompareGuid (HashGuid, &mTpm2HashMask[Index].Guid)) {
  47       return mTpm2HashMask[Index].Mask;
  48     }
  49   }
  50   return 0;
  51 }
  52
  53 /**
  54   The function set digest to digest list.
  55
  56   @param DigestList digest list
  57   @param Digest     digest data
  58 **/
  59 VOID
  60 EFIAPI
  61 Tpm2SetHashToDigestList (
  62   IN OUT TPML_DIGEST_VALUES *DigestList,
  63   IN TPML_DIGEST_VALUES     *Digest
  64   )
  65 {
  66   CopyMem (
  67     &DigestList->digests[DigestList->count],
  68     &Digest->digests[0],
  69     sizeof(Digest->digests[0])
  70     );
  71   DigestList->count ++;
  72 }