Re: [edk2-devel] [PATCH v2 1/1] SecurityPkg/BaseHashLib: Implement Unified Hash Calculation API

["Liming Gao" <liming.gao@intel.com>]

Yes. Does it catch EDK2 2020 Q1 stable tag?

> -----Original Message-----
> From: Sukerkar, Amol N <amol.n.sukerkar@intel.com>
> Sent: Thursday, January 16, 2020 7:02 AM
> To: Gao, Liming <liming.gao@intel.com>; devel@edk2.groups.io; Wang, Jian J <jian.j.wang@intel.com>
> Cc: Kinney, Michael D <michael.d.kinney@intel.com>; Yao, Jiewen <jiewen.yao@intel.com>; Agrawal, Sachin
> <sachin.agrawal@intel.com>; Musti, Srinivas <srinivas.musti@intel.com>; Sukerkar, Amol N <amol.n.sukerkar@intel.com>
> Subject: RE: [edk2-devel] [PATCH v2 1/1] SecurityPkg/BaseHashLib: Implement Unified Hash Calculation API
> 
> Hi Liming,
> 
> We already have a ticket filed in Bugzilla, https://bugzilla.tianocore.org/show_bug.cgi?id=2151. Would this be sufficient?
> 
> Thanks,
> Amol
> 
> -----Original Message-----
> From: Gao, Liming <liming.gao@intel.com>
> Sent: Tuesday, January 14, 2020 8:47 PM
> To: devel@edk2.groups.io; Wang, Jian J <jian.j.wang@intel.com>; Sukerkar, Amol N <amol.n.sukerkar@intel.com>
> Cc: Kinney, Michael D <michael.d.kinney@intel.com>; Yao, Jiewen <jiewen.yao@intel.com>; Agrawal, Sachin
> <sachin.agrawal@intel.com>; Musti, Srinivas <srinivas.musti@intel.com>
> Subject: RE: [edk2-devel] [PATCH v2 1/1] SecurityPkg/BaseHashLib: Implement Unified Hash Calculation API
> 
> Amol:
>   This is new feature. Please submit BZ (https://bugzilla.tianocore.org/) to track it. If this feature catches edk2 2020 Q1 stable tag, I will
> add it into edk2 feature planning.
> 
> Thanks
> Liming
> -----Original Message-----
> From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of Wang, Jian J
> Sent: 2020年1月15日 11:14
> To: Sukerkar, Amol N <amol.n.sukerkar@intel.com>; devel@edk2.groups.io
> Cc: Kinney, Michael D <michael.d.kinney@intel.com>; Yao, Jiewen <jiewen.yao@intel.com>; Agrawal, Sachin
> <sachin.agrawal@intel.com>; Musti, Srinivas <srinivas.musti@intel.com>
> Subject: Re: [edk2-devel] [PATCH v2 1/1] SecurityPkg/BaseHashLib: Implement Unified Hash Calculation API
> 
> Amol,
> 
> 1. Your patch doesn't support hashing more than one algorithm at the same time.
>    Is this on purpose? Sorry I don't remember the conclusion in last discussion.
> 2. There're trailing spaces in BaseHashLibCommon.c and BashHashLibCommon.h.
>    You can use BaseTools\Scripts\PatchCheck.py to check it before sending patch.
> 
> See my other comments below.
> 
> > -----Original Message-----
> > From: Sukerkar, Amol N <amol.n.sukerkar@intel.com>
> > Sent: Tuesday, January 14, 2020 11:41 PM
> > To: devel@edk2.groups.io
> > Cc: Kinney, Michael D <michael.d.kinney@intel.com>; Yao, Jiewen
> > <jiewen.yao@intel.com>; Wang, Jian J <jian.j.wang@intel.com>; Agrawal,
> > Sachin <sachin.agrawal@intel.com>; Musti, Srinivas
> > <srinivas.musti@intel.com>
> > Subject: [PATCH v2 1/1] SecurityPkg/BaseHashLib: Implement Unified
> > Hash Calculation API
> >
> > This commit introduces a Unified Hash API to calculate hash using a
> > hashing algorithm specified by the PCD, PcdSystemHashPolicy. This
> > library interfaces with the various hashing API, such as, MD4, MD5,
> > SHA1, SHA256,
> > SHA512 and SM3_256 implemented in CryptoPkg. The user can calculate
> > the desired hash by setting PcdSystemHashPolicy to appropriate value.
> >
> > Cc: Jiewen Yao <jiewen.yao@intel.com>
> > Cc: Jian J Wang <jian.j.wang@intel.com>
> > Cc: Michael D Kinney <michael.d.kinney@intel.com>
> > Signed-off-by: Sukerkar, Amol N <amol.n.sukerkar@intel.com>
> > ---
> >
> > Notes:
> >     v2:
> >     - Fixed the commit message format
> >
> >  SecurityPkg/Library/BaseHashLib/BaseHashLibCommon.c | 252
> > ++++++++++++++++++++
> >  SecurityPkg/Library/BaseHashLib/BaseHashLibDxe.c    | 122 ++++++++++
> >  SecurityPkg/Library/BaseHashLib/BaseHashLibPei.c    | 125 ++++++++++
> >  SecurityPkg/Include/Library/BaseHashLib.h           |  84 +++++++
> >  SecurityPkg/Library/BaseHashLib/BaseHashLibCommon.h |  71 ++++++
> > SecurityPkg/Library/BaseHashLib/BaseHashLibDxe.inf  |  47 ++++
> > SecurityPkg/Library/BaseHashLib/BaseHashLibDxe.uni  |  18 ++
> > SecurityPkg/Library/BaseHashLib/BaseHashLibPei.inf  |  52 ++++
> > SecurityPkg/Library/BaseHashLib/BaseHashLibPei.uni  |  17 ++
> >  SecurityPkg/SecurityPkg.dec                         |  23 +-
> >  SecurityPkg/SecurityPkg.dsc                         |  10 +-
> >  SecurityPkg/SecurityPkg.uni                         |  15 +-
> >  12 files changed, 833 insertions(+), 3 deletions(-)
> >
> > diff --git a/SecurityPkg/Library/BaseHashLib/BaseHashLibCommon.c
> > b/SecurityPkg/Library/BaseHashLib/BaseHashLibCommon.c
> > new file mode 100644
> > index 000000000000..f8742e55b5f7
> > --- /dev/null
> > +++ b/SecurityPkg/Library/BaseHashLib/BaseHashLibCommon.c
> > @@ -0,0 +1,252 @@
> > +/** @file
> >
> > +  Implement image verification services for secure boot service
> >
> > +
> >
> > +  Caution: This file requires additional review when modified.
> >
> > +  This library will have external input - PE/COFF image.
> >
> > +  This external input must be validated carefully to avoid security
> > + issue like
> >
> > +  buffer overflow, integer overflow.
> >
> > +
> >
> > +  DxeImageVerificationLibImageRead() function will make sure the
> > + PE/COFF
> > image content
> >
> > +  read is within the image buffer.
> >
> > +
> >
> > +  DxeImageVerificationHandler(), HashPeImageByType(), HashPeImage()
> > function will accept
> >
> > +  untrusted PE/COFF image and validate its data structure within this
> > + image
> > buffer before use.
> >
> > +
> >
> > +Copyright (c) 2009 - 2020, Intel Corporation. All rights
> > +reserved.<BR>
> >
> > +(C) Copyright 2016 Hewlett Packard Enterprise Development LP<BR>
> >
> > +This program and the accompanying materials
> >
> > +are licensed and made available under the terms and conditions of the
> > +BSD
> > License
> >
> > +which accompanies this distribution.  The full text of the license
> > +may be found
> > at
> >
> > +http://opensource.org/licenses/bsd-license.php
> >
> > +
> >
> > +THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
> >
> > +WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS
> > OR IMPLIED.
> >
> > +
> >
> > +**/
> >
> > +
> >
> > +#include <Library/BaseLib.h>
> >
> > +#include <Library/BaseMemoryLib.h>
> >
> > +#include <Library/MemoryAllocationLib.h>
> >
> > +#include <Library/BaseCryptLib.h>
> >
> > +#include <Library/DebugLib.h>
> >
> > +#include <Library/PcdLib.h>
> >
> > +#include <Library/BaseHashLib.h>
> >
> > +
> >
> > +/**
> >
> > +  Init hash sequence with Hash Algorithm specified by HashPolicy.
> >
> > +
> >
> > +  @param HashPolicy  Hash Algorithm Policy.
> >
> > +  @param HashHandle  Hash handle.
> >
> > +
> >
> > +  @retval TRUE       Hash start and HashHandle returned.
> >
> > +  @retval FALSE      Hash Init unsuccessful.
> >
> > +**/
> >
> > +BOOLEAN
> >
> > +EFIAPI
> >
> > +HashInitInternal (
> >
> > +  IN UINT8          HashPolicy,
> >
> > +  OUT HASH_HANDLE   *HashHandle
> >
> > +  )
> >
> > +{
> >
> > +  BOOLEAN  Status;
> >
> > +  VOID     *HashCtx;
> >
> > +  UINTN    CtxSize;
> >
> > +
> >
> > +  switch (HashPolicy) {
> >
> > +    case HASH_MD4:
> >
> > +      CtxSize = Md4GetContextSize ();
> >
> > +      HashCtx = AllocatePool (CtxSize);
> >
> > +      ASSERT (HashCtx != NULL);
> >
> > +
> >
> > +      Status = Md4Init (HashCtx);
> >
> > +      break;
> >
> > +
> >
> > +    case HASH_MD5:
> >
> > +      CtxSize = Md5GetContextSize ();
> >
> > +      HashCtx = AllocatePool (CtxSize);
> >
> > +      ASSERT (HashCtx != NULL);
> >
> > +
> >
> > +     Status = Md5Init (HashCtx);
> >
> > +      break;
> >
> > +
> >
> > +    case HASH_SHA1:
> >
> > +      CtxSize = Sha1GetContextSize ();
> >
> > +      HashCtx = AllocatePool (CtxSize);
> >
> > +      ASSERT (HashCtx != NULL);
> >
> > +
> >
> > +      Status = Sha1Init (HashCtx);
> >
> > +      break;
> >
> > +
> >
> > +    case HASH_SHA256:
> >
> > +      CtxSize = Sha256GetContextSize ();
> >
> > +      HashCtx = AllocatePool (CtxSize);
> >
> > +      ASSERT (HashCtx != NULL);
> >
> > +
> >
> > +      Status = Sha256Init (HashCtx);
> >
> > +      break;
> >
> > +
> >
> > +    case HASH_SHA384:
> >
> > +      CtxSize = Sha384GetContextSize ();
> >
> > +      HashCtx = AllocatePool (CtxSize);
> >
> > +      ASSERT (HashCtx != NULL);
> >
> > +
> >
> > +      Status = Sha384Init (HashCtx);
> >
> > +      break;
> >
> > +
> >
> > +    case HASH_SHA512:
> >
> > +      CtxSize = Sha512GetContextSize ();
> >
> > +      HashCtx = AllocatePool (CtxSize);
> >
> > +      ASSERT (HashCtx != NULL);
> >
> > +
> >
> > +      Status = Sha512Init (HashCtx);
> >
> > +      break;
> >
> > +
> >
> > +    case HASH_SM3_256:
> >
> > +      CtxSize = Sm3GetContextSize ();
> >
> > +      HashCtx = AllocatePool (CtxSize);
> >
> > +      ASSERT (HashCtx != NULL);
> >
> > +
> >
> > +      Status = Sm3Init (HashCtx);
> >
> > +      break;
> >
> > +
> >
> > +    default:
> >
> > +      ASSERT (FALSE);
> >
> > +      break;
> >
> > +  }
> >
> > +
> 
> 3. Instead of switch..case, using a global array to defines all supported interfaces would be more efficient, since you can value of
> PcdSystemHashPolicy to index them directly.
> 
> >
> > +  *HashHandle = (HASH_HANDLE)HashCtx;
> >
> > +
> >
> > +  return Status;
> >
> > +}
> >
> > +
> >
> > +/**
> >
> > +  Update hash data with Hash Algorithm specified by HashPolicy.
> >
> > +
> >
> > +  @param HashPolicy    Hash Algorithm Policy.
> >
> > +  @param HashHandle    Hash handle.
> >
> > +  @param DataToHash    Data to be hashed.
> >
> > +  @param DataToHashLen Data size.
> >
> > +
> >
> > +  @retval TRUE         Hash updated.
> >
> > +  @retval FALSE        Hash updated unsuccessful.
> >
> > +**/
> >
> > +BOOLEAN
> >
> > +EFIAPI
> >
> > +HashUpdateInternal (
> >
> > +  IN UINT8        HashPolicy,
> >
> > +  IN HASH_HANDLE  HashHandle,
> >
> > +  IN VOID         *DataToHash,
> >
> > +  IN UINTN        DataToHashLen
> >
> > +  )
> >
> > +{
> >
> > +  BOOLEAN  Status;
> >
> > +  VOID     *HashCtx;
> >
> > +
> >
> > +  HashCtx = (VOID *)HashHandle;
> >
> > +
> >
> > +  switch (HashPolicy) {
> >
> > +    case HASH_MD4:
> >
> > +      Status = Md4Update (HashCtx, DataToHash, DataToHashLen);
> >
> > +      break;
> >
> > +
> >
> > +    case HASH_MD5:
> >
> > +      Status = Md5Update (HashCtx, DataToHash, DataToHashLen);
> >
> > +      break;
> >
> > +
> >
> > +    case HASH_SHA1:
> >
> > +      Status = Sha1Update (HashCtx, DataToHash, DataToHashLen);
> >
> > +      break;
> >
> > +
> >
> > +    case HASH_SHA256:
> >
> > +      Status = Sha256Update (HashCtx, DataToHash, DataToHashLen);
> >
> > +      break;
> >
> > +
> >
> > +    case HASH_SHA384:
> >
> > +      Status = Sha384Update (HashCtx, DataToHash, DataToHashLen);
> >
> > +      break;
> >
> > +
> >
> > +    case HASH_SHA512:
> >
> > +      Status = Sha512Update (HashCtx, DataToHash, DataToHashLen);
> >
> > +      break;
> >
> > +
> >
> > +    case HASH_SM3_256:
> >
> > +      Status = Sm3Update (HashCtx, DataToHash, DataToHashLen);
> >
> > +      break;
> >
> > +
> >
> > +    default:
> >
> > +      ASSERT (FALSE);
> >
> > +      break;
> >
> > +  }
> >
> 
> 4. The same as 3
> 
> > +
> >
> > +  return Status;
> >
> > +}
> >
> > +
> >
> > +/**
> >
> > +  Hash complete with Hash Algorithm specified by HashPolicy.
> >
> > +
> >
> > +  @param HashPolicy    Hash Algorithm Policy.
> >
> > +  @param HashHandle    Hash handle.
> >
> > +  @param Digest        Hash Digest.
> >
> > +
> >
> > +  @retval TRUE         Hash complete and Digest is returned.
> >
> > +  @retval FALSE        Hash complete unsuccessful.
> >
> > +**/
> >
> > +BOOLEAN
> >
> > +EFIAPI
> >
> > +HashFinalInternal (
> >
> > +  IN UINT8        HashPolicy,
> >
> > +  IN HASH_HANDLE  HashHandle,
> >
> > +  OUT UINT8       **Digest
> >
> > +  )
> >
> > +{
> >
> > +  BOOLEAN  Status;
> >
> > +  VOID     *HashCtx;
> >
> > +  UINT8    DigestData[SHA512_DIGEST_SIZE];
> >
> > +
> >
> > +  HashCtx = (VOID *)HashHandle;
> >
> > +
> >
> > +  switch (HashPolicy) {
> >
> > +    case HASH_MD4:
> >
> > +      Status = Md4Final (HashCtx, DigestData);
> >
> > +      CopyMem (*Digest, DigestData, MD4_DIGEST_SIZE);
> >
> > +      break;
> >
> > +
> >
> > +    case HASH_MD5:
> >
> > +      Status = Md5Final (HashCtx, DigestData);
> >
> > +      CopyMem (*Digest, DigestData, MD5_DIGEST_SIZE);
> >
> > +      break;
> >
> > +
> >
> > +    case HASH_SHA1:
> >
> > +      Status = Sha1Final (HashCtx, DigestData);
> >
> > +      CopyMem (*Digest, DigestData, SHA1_DIGEST_SIZE);
> >
> > +      break;
> >
> > +
> >
> > +    case HASH_SHA256:
> >
> > +      Status = Sha256Final (HashCtx, DigestData);
> >
> > +      CopyMem (*Digest, DigestData, SHA256_DIGEST_SIZE);
> >
> > +      break;
> >
> > +
> >
> > +    case HASH_SHA384:
> >
> > +      Status = Sha384Final (HashCtx, DigestData);
> >
> > +      CopyMem (*Digest, DigestData, SHA384_DIGEST_SIZE);
> >
> > +      break;
> >
> > +
> >
> > +    case HASH_SHA512:
> >
> > +      Status = Sha512Final (HashCtx, DigestData);
> >
> > +      CopyMem (*Digest, DigestData, SHA512_DIGEST_SIZE);
> >
> > +      break;
> >
> > +
> >
> > +    case HASH_SM3_256:
> >
> > +      Status = Sm3Final (HashCtx, DigestData);
> >
> > +      CopyMem (*Digest, DigestData, SM3_256_DIGEST_SIZE);
> >
> > +      break;
> >
> > +
> >
> > +    default:
> >
> > +      ASSERT (FALSE);
> >
> > +      break;
> >
> 
> 5. The same as 3
> 
> > +  }
> >
> > +
> >
> > +  FreePool (HashCtx);
> >
> > +
> >
> > +  return Status;
> >
> > +}
> > \ No newline at end of file
> > diff --git a/SecurityPkg/Library/BaseHashLib/BaseHashLibDxe.c
> > b/SecurityPkg/Library/BaseHashLib/BaseHashLibDxe.c
> > new file mode 100644
> > index 000000000000..ea22cfe16e2f
> > --- /dev/null
> > +++ b/SecurityPkg/Library/BaseHashLib/BaseHashLibDxe.c
> > @@ -0,0 +1,122 @@
> > +/** @file
> >
> > +  This library is Unified Hash API. It will redirect hash request to
> >
> > +  the hash handler specified by PcdSystemHashPolicy such as SHA1,
> > + SHA256,
> >
> > +  SHA384 and SM3...
> >
> > +
> >
> > +Copyright (c) 2013 - 2020, Intel Corporation. All rights reserved.
> > +<BR>
> >
> > +SPDX-License-Identifier: BSD-2-Clause-Patent
> >
> > +
> >
> > +**/
> >
> > +
> >
> > +
> >
> > +#include <Library/BaseLib.h>
> >
> > +#include <Library/BaseMemoryLib.h>
> >
> > +#include <Library/MemoryAllocationLib.h>
> >
> > +#include <Library/DebugLib.h>
> >
> > +#include <Library/PcdLib.h>
> >
> > +#include <Library/BaseHashLib.h>
> >
> > +
> >
> > +#include "BaseHashLibCommon.h"
> >
> > +
> >
> > +/**
> >
> > +  Init hash sequence.
> >
> > +
> >
> > +  @param HashHandle  Hash handle.
> >
> > +
> >
> > +  @retval TRUE       Hash start and HashHandle returned.
> >
> > +  @retval FALSE      Hash Init unsuccessful.
> >
> > +**/
> >
> > +BOOLEAN
> >
> > +EFIAPI
> >
> > +HashApiInit (
> >
> > +  OUT  HASH_HANDLE   *HashHandle
> >
> > +)
> >
> > +{
> >
> > +  BOOLEAN     Status;
> >
> > +  UINT8       HashPolicy;
> >
> > +  HASH_HANDLE Handle;
> >
> > +
> >
> > +  HashPolicy = PcdGet8 (PcdSystemHashPolicy);
> >
> > +
> >
> > +  Status = HashInitInternal (HashPolicy, &Handle);
> >
> > +
> >
> > +  *HashHandle = Handle;
> >
> > +
> >
> > +  return Status;
> >
> > +}
> >
> > +
> >
> > +/**
> >
> > +  Update hash data.
> >
> > +
> >
> > +  @param HashHandle    Hash handle.
> >
> > +  @param DataToHash    Data to be hashed.
> >
> > +  @param DataToHashLen Data size.
> >
> > +
> >
> > +  @retval TRUE         Hash updated.
> >
> > +  @retval FALSE        Hash updated unsuccessful.
> >
> > +**/
> >
> > +BOOLEAN
> >
> > +EFIAPI
> >
> > +HashApiUpdate (
> >
> > +  IN HASH_HANDLE    HashHandle,
> >
> > +  IN VOID           *DataToHash,
> >
> > +  IN UINTN          DataToHashLen
> >
> > +)
> >
> > +{
> >
> > +  BOOLEAN     Status;
> >
> > +  UINT8       HashPolicy;
> >
> > +
> >
> > +  HashPolicy = PcdGet8 (PcdSystemHashPolicy);
> >
> > +
> >
> > +  Status = HashUpdateInternal (HashPolicy, HashHandle, DataToHash,
> > DataToHashLen);
> >
> > +
> >
> > +  return Status;
> >
> > +}
> >
> > +
> >
> > +/**
> >
> > +  Hash complete.
> >
> > +
> >
> > +  @param HashHandle    Hash handle.
> >
> > +  @param Digest        Hash Digest.
> >
> > +
> >
> > +  @retval TRUE         Hash complete and Digest is returned.
> >
> > +  @retval FALSE        Hash complete unsuccessful.
> >
> > +**/
> >
> > +BOOLEAN
> >
> > +EFIAPI
> >
> > +HashApiFinal (
> >
> > +  IN  HASH_HANDLE HashHandle,
> >
> > +  OUT UINT8       *Digest
> >
> > +)
> >
> > +{
> >
> > +  BOOLEAN     Status;
> >
> > +  UINT8       HashPolicy;
> >
> > +
> >
> > +  HashPolicy = PcdGet8 (PcdSystemHashPolicy);
> >
> > +
> >
> > +  Status = HashFinalInternal (HashPolicy, &HashHandle, &Digest);
> >
> > +
> >
> > +  return Status;
> >
> > +}
> >
> > +
> >
> > +/**
> >
> > +  The constructor function of BaseHashLib Dxe.
> >
> > +
> >
> > +  @param  FileHandle   The handle of FFS header the loaded driver.
> >
> > +  @param  PeiServices  The pointer to the PEI services.
> >
> > +
> >
> > +  @retval EFI_SUCCESS           The constructor executes successfully.
> >
> > +  @retval EFI_OUT_OF_RESOURCES  There is no enough resource for the
> > constructor.
> >
> > +
> >
> > +**/
> >
> > +EFI_STATUS
> >
> > +EFIAPI
> >
> > +BaseHashLibApiDxeConstructor (
> >
> > +  IN EFI_HANDLE        ImageHandle,
> >
> > +  IN EFI_SYSTEM_TABLE  *SystemTable
> >
> > +  )
> >
> > +{
> >
> > +  DEBUG ((DEBUG_INFO,"Calling BaseHashLibApiDxeConstructor.. \n"));
> >
> > +
> >
> > +  return EFI_SUCCESS;
> >
> > +}
> 
> 6. Constructor is not necessary if you don't have anything to do with it.
>    You can remove it from inf file and here.
> 
> > \ No newline at end of file
> > diff --git a/SecurityPkg/Library/BaseHashLib/BaseHashLibPei.c
> > b/SecurityPkg/Library/BaseHashLib/BaseHashLibPei.c
> > new file mode 100644
> > index 000000000000..580ac21fc1d9
> > --- /dev/null
> > +++ b/SecurityPkg/Library/BaseHashLib/BaseHashLibPei.c
> > @@ -0,0 +1,125 @@
> > +/** @file
> >
> > +  This library is Unified Hash API. It will redirect hash request to
> >
> > +  the hash handler specified by PcdSystemHashPolicy such as SHA1,
> > + SHA256,
> >
> > +  SHA384 and SM3...
> >
> > +
> >
> > +Copyright (c) 2013 - 2020, Intel Corporation. All rights reserved.
> > +<BR>
> >
> > +SPDX-License-Identifier: BSD-2-Clause-Patent
> >
> > +
> >
> > +**/
> >
> > +
> >
> > +
> >
> > +#include <Library/BaseLib.h>
> >
> > +#include <Library/BaseMemoryLib.h>
> >
> > +#include <Library/MemoryAllocationLib.h>
> >
> > +#include <Library/DebugLib.h>
> >
> > +#include <Library/PcdLib.h>
> >
> > +#include <Library/HashLib.h>
> >
> > +#include <Library/HobLib.h>
> >
> > +#include <Guid/ZeroGuid.h>
> >
> > +
> >
> > +#include <Library/BaseHashLib.h>
> >
> > +#include "BaseHashLibCommon.h"
> >
> > +
> >
> > +/**
> >
> > +  Init hash sequence.
> >
> > +
> >
> > +  @param HashHandle  Hash handle.
> >
> > +
> >
> > +  @retval TRUE       Hash start and HashHandle returned.
> >
> > +  @retval FALSE      Hash Init unsuccessful.
> >
> > +**/
> >
> > +BOOLEAN
> >
> > +EFIAPI
> >
> > +HashApiInit (
> >
> > +  OUT  HASH_HANDLE   *HashHandle
> >
> > +)
> >
> > +{
> >
> > +  BOOLEAN     Status;
> >
> > +  UINT8       HashPolicy;
> >
> > +  HASH_HANDLE Handle;
> >
> > +
> >
> > +  HashPolicy = PcdGet8 (PcdSystemHashPolicy);
> >
> > +
> >
> > +  Status = HashInitInternal (HashPolicy, &Handle);
> >
> > +
> >
> > +  *HashHandle = Handle;
> >
> > +
> >
> > +  return Status;
> >
> > +}
> >
> > +
> >
> > +/**
> >
> > +  Update hash data.
> >
> > +
> >
> > +  @param HashHandle    Hash handle.
> >
> > +  @param DataToHash    Data to be hashed.
> >
> > +  @param DataToHashLen Data size.
> >
> > +
> >
> > +  @retval TRUE         Hash updated.
> >
> > +  @retval FALSE        Hash updated unsuccessful.
> >
> > +**/
> >
> > +BOOLEAN
> >
> > +EFIAPI
> >
> > +HashApiUpdate (
> >
> > +  IN HASH_HANDLE    HashHandle,
> >
> > +  IN VOID           *DataToHash,
> >
> > +  IN UINTN          DataToHashLen
> >
> > +)
> >
> > +{
> >
> > +  BOOLEAN     Status;
> >
> > +  UINT8       HashPolicy;
> >
> > +
> >
> > +  HashPolicy = PcdGet8 (PcdSystemHashPolicy);
> >
> > +
> >
> > +  Status = HashUpdateInternal (HashPolicy, HashHandle, DataToHash,
> > DataToHashLen);
> >
> > +
> >
> > +  return Status;
> >
> > +}
> >
> > +
> >
> > +/**
> >
> > +  Hash complete.
> >
> > +
> >
> > +  @param HashHandle    Hash handle.
> >
> > +  @param Digest        Hash Digest.
> >
> > +
> >
> > +  @retval TRUE         Hash complete and Digest is returned.
> >
> > +  @retval FALSE        Hash complete unsuccessful.
> >
> > +**/
> >
> > +BOOLEAN
> >
> > +EFIAPI
> >
> > +HashApiFinal (
> >
> > +  IN  HASH_HANDLE HashHandle,
> >
> > +  OUT UINT8      *Digest
> >
> > +)
> >
> > +{
> >
> > +  BOOLEAN     Status;
> >
> > +  UINT8       HashPolicy;
> >
> > +
> >
> > +  HashPolicy = PcdGet8 (PcdSystemHashPolicy);
> >
> > +
> >
> > +  Status = HashFinalInternal (HashPolicy, HashHandle, &Digest);
> >
> > +
> >
> > +  return Status;
> >
> > +}
> >
> > +
> >
> > +/**
> >
> > +  The constructor function of BaseHashLib Pei.
> >
> > +
> >
> > +  @param  FileHandle   The handle of FFS header the loaded driver.
> >
> > +  @param  PeiServices  The pointer to the PEI services.
> >
> > +
> >
> > +  @retval EFI_SUCCESS           The constructor executes successfully.
> >
> > +  @retval EFI_OUT_OF_RESOURCES  There is no enough resource for the
> > constructor.
> >
> > +
> >
> > +**/
> >
> > +EFI_STATUS
> >
> > +EFIAPI
> >
> > +BaseHashLibApiPeiConstructor (
> >
> > +  IN EFI_PEI_FILE_HANDLE        FileHandle,
> >
> > +  IN CONST EFI_PEI_SERVICES     **PeiServices
> >
> > +  )
> >
> > +{
> >
> > +  DEBUG ((DEBUG_INFO,"Calling BaseHashLibApiPeiConstructor.. \n"));
> >
> > +
> >
> > +  return EFI_SUCCESS;
> >
> > +}
> 
> 7. The same as 6
> 
> > \ No newline at end of file
> > diff --git a/SecurityPkg/Include/Library/BaseHashLib.h
> > b/SecurityPkg/Include/Library/BaseHashLib.h
> > new file mode 100644
> > index 000000000000..e1883fe7ce41
> > --- /dev/null
> > +++ b/SecurityPkg/Include/Library/BaseHashLib.h
> > @@ -0,0 +1,84 @@
> > +/** @file
> > +  The internal header file includes the common header files, defines
> > +  internal structure and functions used by ImageVerificationLib.
> > +
> > +Copyright (c) 2009 - 2020, Intel Corporation. All rights
> > +reserved.<BR> This program and the accompanying materials are
> > +licensed and made available under the terms and conditions of the BSD
> > License
> > +which accompanies this distribution.  The full text of the license
> > +may be found
> > at
> > +http://opensource.org/licenses/bsd-license.php
> > +
> > +THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
> > +WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS
> > OR IMPLIED.
> > +
> > +**/
> > +
> > +#ifndef __BASEHASHLIB_H_
> > +#define __BASEHASHLIB_H_
> > +
> > +#include <Uefi.h>
> > +#include <Protocol/Hash.h>
> > +#include <Library/HashLib.h>
> > +
> > +//
> > +// Hash Algorithms
> > +//
> > +#define HASH_DEFAULT    0x00000000
> > +#define HASH_MD4        0x00000001
> > +#define HASH_MD5        0x00000002
> > +#define HASH_SHA1       0x00000003
> > +#define HASH_SHA256     0x00000004
> > +#define HASH_SHA384     0x00000005
> > +#define HASH_SHA512     0x00000006
> > +#define HASH_SM3_256    0x00000007
> > +
> > +
> > +/**
> > +  Init hash sequence.
> > +
> > +  @param HashHandle  Hash handle.
> > +
> > +  @retval TRUE       Hash start and HashHandle returned.
> > +  @retval FALSE      Hash Init unsuccessful.
> > +**/
> > +BOOLEAN
> > +EFIAPI
> > +HashApiInit (
> > +  OUT  HASH_HANDLE   *HashHandle
> > +);
> > +
> > +/**
> > +  Update hash data.
> > +
> > +  @param HashHandle    Hash handle.
> > +  @param DataToHash    Data to be hashed.
> > +  @param DataToHashLen Data size.
> > +
> > +  @retval TRUE         Hash updated.
> > +  @retval FALSE        Hash updated unsuccessful.
> > +**/
> > +BOOLEAN
> > +EFIAPI
> > +HashApiUpdate (
> > +  IN HASH_HANDLE    HashHandle,
> > +  IN VOID           *DataToHash,
> > +  IN UINTN          DataToHashLen
> > +);
> > +
> > +/**
> > +  Hash complete.
> > +
> > +  @param HashHandle    Hash handle.
> > +  @param Digest        Hash Digest.
> > +
> > +  @retval TRUE         Hash complete and Digest is returned.
> > +  @retval FALSE        Hash complete unsuccessful.
> > +**/
> > +BOOLEAN
> > +EFIAPI
> > +HashApiFinal (
> > +  IN  HASH_HANDLE HashHandle,
> > +  OUT UINT8       *Digest
> > +);
> > +
> > +#endif
> > \ No newline at end of file
> > diff --git a/SecurityPkg/Library/BaseHashLib/BaseHashLibCommon.h
> > b/SecurityPkg/Library/BaseHashLib/BaseHashLibCommon.h
> > new file mode 100644
> > index 000000000000..776b74ad753b
> > --- /dev/null
> > +++ b/SecurityPkg/Library/BaseHashLib/BaseHashLibCommon.h
> > @@ -0,0 +1,71 @@
> > +/** @file
> > +  The internal header file includes the common header files, defines
> > +  internal structure and functions used by ImageVerificationLib.
> > +
> > +Copyright (c) 2009 - 2020, Intel Corporation. All rights
> > +reserved.<BR> This program and the accompanying materials are
> > +licensed and made available under the terms and conditions of the BSD
> > License
> > +which accompanies this distribution.  The full text of the license
> > +may be found
> > at
> > +http://opensource.org/licenses/bsd-license.php
> > +
> > +THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
> > +WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS
> > OR IMPLIED.
> > +
> > +**/
> > +
> > +#ifndef __BASEHASHLIB_COMMON_H_
> > +#define __BASEHASHLIB_COMMON_H_
> > +
> > +/**
> > +  Init hash sequence with Hash Algorithm specified by HashPolicy.
> > +
> > +  @param HashHandle Hash handle.
> > +
> > +  @retval EFI_SUCCESS          Hash start and HashHandle returned.
> > +  @retval EFI_UNSUPPORTED      System has no HASH library registered.
> > +**/
> > +BOOLEAN
> > +EFIAPI
> > +HashInitInternal (
> > +  IN UINT8          HashPolicy,
> > +  OUT HASH_HANDLE   *HashHandle
> > +  );
> > +
> > +/**
> > +  Hash complete with Hash Algorithm specified by HashPolicy.
> > +
> > +  @param HashPolicy    Hash Algorithm Policy.
> > +  @param HashHandle    Hash handle.
> > +  @param Digest        Hash Digest.
> > +
> > +  @retval TRUE         Hash complete and Digest is returned.
> > +  @retval FALSE        Hash complete unsuccessful.
> > +**/
> > +BOOLEAN
> > +EFIAPI
> > +HashUpdateInternal (
> > +  IN UINT8        HashPolicy,
> > +  IN HASH_HANDLE  HashHandle,
> > +  IN VOID         *DataToHash,
> > +  IN UINTN        DataToHashLen
> > +  );
> > +
> > +/**
> > +  Update hash data with Hash Algorithm specified by HashPolicy.
> > +
> > +  @param HashPolicy    Hash Algorithm Policy.
> > +  @param HashHandle    Hash handle.
> > +  @param DataToHash    Data to be hashed.
> > +  @param DataToHashLen Data size.
> > +
> > +  @retval TRUE         Hash updated.
> > +  @retval FALSE        Hash updated unsuccessful.
> > +**/
> > +BOOLEAN
> > +EFIAPI
> > +HashFinalInternal (
> > +  IN UINT8        HashPolicy,
> > +  IN HASH_HANDLE  HashHandle,
> > +  OUT UINT8       **Digest
> > +  );
> > +#endif
> > \ No newline at end of file
> > diff --git a/SecurityPkg/Library/BaseHashLib/BaseHashLibDxe.inf
> > b/SecurityPkg/Library/BaseHashLib/BaseHashLibDxe.inf
> > new file mode 100644
> > index 000000000000..f97bda06108f
> > --- /dev/null
> > +++ b/SecurityPkg/Library/BaseHashLib/BaseHashLibDxe.inf
> > @@ -0,0 +1,47 @@
> > +## @file
> >
> > +#  Provides hash service by registered hash handler
> >
> > +#
> >
> > +#  This library is Base Hash Lib. It will redirect hash request to
> > +each individual
> >
> > +#  hash handler registered, such as SHA1, SHA256, SHA384, SM3.
> >
> > +#
> >
> > +# Copyright (c) 2018 - 2020, Intel Corporation. All rights
> > +reserved.<BR>
> >
> > +# SPDX-License-Identifier: BSD-2-Clause-Patent
> >
> > +#
> >
> > +##
> >
> > +
> >
> > +[Defines]
> >
> > +  INF_VERSION                    = 0x00010005
> >
> > +  BASE_NAME                      = BaseHashLibDxe
> >
> > +  MODULE_UNI_FILE                = BaseHashLibDxe.uni
> >
> > +  FILE_GUID                      = 158DC712-F15A-44dc-93BB-1675045BE066
> >
> > +  MODULE_TYPE                    = DXE_DRIVER
> >
> > +  VERSION_STRING                 = 1.0
> >
> > +  LIBRARY_CLASS                  = BaseHashLib|DXE_DRIVER DXE_RUNTIME_DRIVER
> > DXE_SMM_DRIVER UEFI_APPLICATION UEFI_DRIVER
> >
> > +  CONSTRUCTOR                    = BaseHashLibApiDxeConstructor
> 
> 8. Since the above function is actually empty, you can remove above line and
>    function in c file.
> 
> >
> > +
> >
> > +#
> >
> > +# The following information is for reference only and not required by
> > +the build
> > tools.
> >
> > +#
> >
> > +#  VALID_ARCHITECTURES           = IA32 X64
> >
> > +#
> >
> > +
> >
> > +[Sources]
> >
> > +  BaseHashLibCommon.h
> >
> > +  BaseHashLibCommon.c
> >
> > +  BaseHashLibDxe.c
> >
> > +
> >
> > +[Packages]
> >
> > +  MdePkg/MdePkg.dec
> >
> > +  CryptoPkg/CryptoPkg.dec
> >
> > +  SecurityPkg/SecurityPkg.dec
> >
> > +
> >
> > +[LibraryClasses]
> >
> > +  BaseLib
> >
> > +  BaseMemoryLib
> >
> > +  DebugLib
> >
> > +  MemoryAllocationLib
> >
> > +  BaseCryptLib
> >
> > +  PcdLib
> >
> > +
> >
> > +[Pcd]
> >
> > +  gEfiSecurityPkgTokenSpaceGuid.PcdSystemHashPolicy    ## CONSUMES
> >
> > diff --git a/SecurityPkg/Library/BaseHashLib/BaseHashLibDxe.uni
> > b/SecurityPkg/Library/BaseHashLib/BaseHashLibDxe.uni
> > new file mode 100644
> > index 000000000000..1865773b4a25
> > --- /dev/null
> > +++ b/SecurityPkg/Library/BaseHashLib/BaseHashLibDxe.uni
> > @@ -0,0 +1,18 @@
> > +// /** @file
> >
> > +// Provides hash service by registered hash handler
> >
> > +//
> >
> > +// This library is Unified Hash API. It will redirect hash request to
> > +each individual
> >
> > +// hash handler registered, such as SHA1, SHA256. Platform can use
> > PcdTpm2HashMask to
> >
> > +// mask some hash engines.
> >
> > +//
> >
> > +// Copyright (c) 2018 - 2020, Intel Corporation. All rights
> > +reserved.<BR>
> >
> > +//
> >
> > +// SPDX-License-Identifier: BSD-2-Clause-Patent
> >
> > +//
> >
> > +// **/
> >
> > +
> >
> > +
> >
> > +#string STR_MODULE_ABSTRACT             #language en-US "Provides hash
> > service by specified hash handler"
> >
> > +
> >
> > +#string STR_MODULE_DESCRIPTION          #language en-US "This library is
> > Unified Hash API. It will redirect hash request to the hash handler
> > specified by PcdSystemHashPolicy."
> >
> > +
> >
> > diff --git a/SecurityPkg/Library/BaseHashLib/BaseHashLibPei.inf
> > b/SecurityPkg/Library/BaseHashLib/BaseHashLibPei.inf
> > new file mode 100644
> > index 000000000000..4d36030744bd
> > --- /dev/null
> > +++ b/SecurityPkg/Library/BaseHashLib/BaseHashLibPei.inf
> > @@ -0,0 +1,52 @@
> > +## @file
> >
> > +#  Provides hash service by registered hash handler
> >
> > +#
> >
> > +#  This library is BaseCrypto router. It will redirect hash request
> > +to each
> > individual
> >
> > +#  hash handler registered, such as SHA1, SHA256.
> >
> > +#
> >
> > +# Copyright (c) 2018 - 2020, Intel Corporation. All rights
> > +reserved.<BR>
> >
> > +# SPDX-License-Identifier: BSD-2-Clause-Patent
> >
> > +#
> >
> > +##
> >
> > +
> >
> > +[Defines]
> >
> > +  INF_VERSION                    = 0x00010005
> >
> > +  BASE_NAME                      = BaseHashLibPei
> >
> > +  MODULE_UNI_FILE                = BaseHashLibPei.uni
> >
> > +  FILE_GUID                      = DDCBCFBA-8EEB-488a-96D6-097831A6E50B
> >
> > +  MODULE_TYPE                    = PEIM
> >
> > +  VERSION_STRING                 = 1.0
> >
> > +  LIBRARY_CLASS                  = BaseHashLib|PEIM
> >
> > +  CONSTRUCTOR                    = BaseHashLibApiPeiConstructor
> >
> 
> 9. The same as 8
> 
> > +
> >
> > +#
> >
> > +# The following information is for reference only and not required by
> > +the build
> > tools.
> >
> > +#
> >
> > +#  VALID_ARCHITECTURES           = IA32 X64
> >
> > +#
> >
> > +
> >
> > +[Sources]
> >
> > +  BaseHashLibCommon.h
> >
> > +  BaseHashLibCommon.c
> >
> > +  BaseHashLibPei.c
> >
> > +
> >
> > +[Packages]
> >
> > +  MdePkg/MdePkg.dec
> >
> > +  SecurityPkg/SecurityPkg.dec
> >
> > +  CryptoPkg/CryptoPkg.dec
> >
> > +  MdeModulePkg/MdeModulePkg.dec
> >
> > +
> >
> > +[LibraryClasses]
> >
> > +  BaseLib
> >
> > +  BaseMemoryLib
> >
> > +  DebugLib
> >
> > +  MemoryAllocationLib
> >
> > +  BaseCryptLib
> >
> > +  PcdLib
> >
> > +
> >
> > +[Guids]
> >
> > +  ## SOMETIMES_CONSUMES   ## GUID
> >
> > +  gZeroGuid
> >
> > +
> >
> > +[Pcd]
> >
> > +  gEfiSecurityPkgTokenSpaceGuid.PcdSystemHashPolicy    ## CONSUMES
> >
> > diff --git a/SecurityPkg/Library/BaseHashLib/BaseHashLibPei.uni
> > b/SecurityPkg/Library/BaseHashLib/BaseHashLibPei.uni
> > new file mode 100644
> > index 000000000000..2131b61bd235
> > --- /dev/null
> > +++ b/SecurityPkg/Library/BaseHashLib/BaseHashLibPei.uni
> > @@ -0,0 +1,17 @@
> > +// /** @file
> >
> > +// Provides hash service by registered hash handler
> >
> > +//
> >
> > +// This library is Unified Hash API. It will redirect hash request to
> > +each individual
> >
> > +// hash handler registered, such as SHA1, SHA256.
> >
> > +//
> >
> > +// Copyright (c) 2018 - 2020, Intel Corporation. All rights
> > +reserved.<BR>
> >
> > +//
> >
> > +// SPDX-License-Identifier: BSD-2-Clause-Patent
> >
> > +//
> >
> > +// **/
> >
> > +
> >
> > +
> >
> > +#string STR_MODULE_ABSTRACT             #language en-US "Provides hash
> > service by specified hash handler"
> >
> > +
> >
> > +#string STR_MODULE_DESCRIPTION          #language en-US "This library is
> > Unified Hash API. It will redirect hash request to the hash handler
> > specified by PcdSystemHashPolicy."
> >
> > +
> >
> > diff --git a/SecurityPkg/SecurityPkg.dec b/SecurityPkg/SecurityPkg.dec
> > index cac36caf0a0d..e0e144124ddd 100644
> > --- a/SecurityPkg/SecurityPkg.dec
> > +++ b/SecurityPkg/SecurityPkg.dec
> > @@ -5,7 +5,7 @@
> >  #  It also provides the definitions(including PPIs/PROTOCOLs/GUIDs
> > and library
> > classes)
> >
> >  #  and libraries instances, which are used for those features.
> >
> >  #
> >
> > -# Copyright (c) 2009 - 2019, Intel Corporation. All rights
> > reserved.<BR>
> >
> > +# Copyright (c) 2009 - 2020, Intel Corporation. All rights
> > +reserved.<BR>
> >
> >  # (C) Copyright 2015 Hewlett Packard Enterprise Development LP <BR>
> >
> >  # Copyright (c) 2017, Microsoft Corporation.  All rights reserved.
> > <BR>
> >
> >  # SPDX-License-Identifier: BSD-2-Clause-Patent
> >
> > @@ -27,6 +27,10 @@ [LibraryClasses]
> >    #
> >
> >    HashLib|Include/Library/HashLib.h
> >
> >
> >
> > +  ##  @libraryclass  Provides hash interfaces from different implementations.
> >
> > +  #
> >
> > +  BaseHashLib|Include/Library/HashLib.h
> >
> > +
> >
> >    ##  @libraryclass  Provides a platform specific interface to detect
> > physically present user.
> >
> >    #
> >
> >    PlatformSecureLib|Include/Library/PlatformSecureLib.h
> >
> > @@ -496,5 +500,22 @@ [PcdsDynamic, PcdsDynamicEx]
> >    # @Prompt Tpm2AcpiTableLasa LASA field in TPM2 ACPI table.
> >
> >
> > gEfiSecurityPkgTokenSpaceGuid.PcdTpm2AcpiTableLasa|0|UINT64|0x00010023
> >
> >
> >
> > +[PcdsFixedAtBuild, PcdsPatchableInModule, PcdsDynamic, PcdsDynamicEx]
> >
> > +  ## This PCD indicates the HASH algorithm to verify unsigned PE/COFF
> > + image
> >
> > +  #  Based on the value set, the required algorithm is chosen to
> > + verify
> >
> > +  #  the unsigned image during Secure Boot.<BR>
> >
> > +  #  The hashing algorithm selected must match the hashing algorithm
> > + used to
> >
> > +  #  hash the image to be added to DB using tools such as
> > + KeyEnroll.<BR>
> >
> > +  #     0x00000001    - MD4.<BR>
> >
> > +  #     0x00000002    - MD5.<BR>
> >
> > +  #     0x00000003    - SHA1.<BR>
> >
> > +  #     0x00000004    - SHA256.<BR>
> >
> > +  #     0x00000005    - SHA384.<BR>
> >
> > +  #     0x00000006    - SHA512.<BR>
> >
> > +  #     0x00000007    - SM3_256.<BR>
> >
> > +  # @Prompt Set policy for hashing unsigned image for Secure Boot.
> >
> > +  # @ValidRange 0x80000001 | 0x00000001 - 0x00000007
> >
> > +
> > gEfiSecurityPkgTokenSpaceGuid.PcdSystemHashPolicy|0x04|UINT8|0x0001002
> > 4
> >
> > +
> >
> >  [UserExtensions.TianoCore."ExtraFiles"]
> >
> >    SecurityPkgExtra.uni
> >
> > diff --git a/SecurityPkg/SecurityPkg.dsc b/SecurityPkg/SecurityPkg.dsc
> > index a2eeadda7a7e..86a5847e2509 100644
> > --- a/SecurityPkg/SecurityPkg.dsc
> > +++ b/SecurityPkg/SecurityPkg.dsc
> > @@ -1,7 +1,7 @@
> >  ## @file
> >
> >  #  Security Module Package for All Architectures.
> >
> >  #
> >
> > -# Copyright (c) 2009 - 2019, Intel Corporation. All rights
> > reserved.<BR>
> >
> > +# Copyright (c) 2009 - 2020, Intel Corporation. All rights
> > +reserved.<BR>
> >
> >  # (C) Copyright 2015 Hewlett Packard Enterprise Development LP<BR>
> >
> >  # SPDX-License-Identifier: BSD-2-Clause-Patent
> >
> >  #
> >
> > @@ -95,6 +95,7 @@ [LibraryClasses.common.PEIM]
> >
> > Tpm2DeviceLib|SecurityPkg/Library/Tpm2DeviceLibDTpm/Tpm2DeviceLibDTpm.
> > inf
> >
> >
> > Tcg2PhysicalPresenceLib|SecurityPkg/Library/PeiTcg2PhysicalPresenceLib
> > Tcg2PhysicalPresenceLib|/PeiTc
> > g2PhysicalPresenceLib.inf
> >
> >    RngLib|MdePkg/Library/BaseRngLib/BaseRngLib.inf
> >
> > +  BaseHashLib|SecurityPkg/Library/BaseHashLib/BaseHashLibPei.inf
> >
> >
> >
> >  [LibraryClasses.common.DXE_DRIVER]
> >
> >    HobLib|MdePkg/Library/DxeHobLib/DxeHobLib.inf
> >
> > @@ -110,6 +111,7 @@ [LibraryClasses.common.DXE_DRIVER]
> >
> > Tpm12DeviceLib|SecurityPkg/Library/Tpm12DeviceLibTcg/Tpm12DeviceLibTcg
> > Tpm12DeviceLib|.i
> > nf
> >
> >
> > Tpm2DeviceLib|SecurityPkg/Library/Tpm2DeviceLibTcg2/Tpm2DeviceLibTcg2.
> > Tpm2DeviceLib|in
> > f
> >
> >
> > FileExplorerLib|MdeModulePkg/Library/FileExplorerLib/FileExplorerLib.i
> > nf
> >
> > +  BaseHashLib|SecurityPkg/Library/BaseHashLib/BaseHashLibDxe.inf
> >
> >
> >
> >  [LibraryClasses.common.UEFI_DRIVER,
> > LibraryClasses.common.DXE_RUNTIME_DRIVER,
> > LibraryClasses.common.DXE_SAL_DRIVER,]
> >
> >    HobLib|MdePkg/Library/DxeHobLib/DxeHobLib.inf
> >
> > @@ -211,6 +213,12 @@ [Components]
> >
> >
> >    SecurityPkg/Library/HashLibTpm2/HashLibTpm2.inf
> >
> >
> >
> > +  #
> >
> > +  # Unified Hash API
> >
> > +  #
> >
> > +  SecurityPkg/Library/BaseHashLib/BaseHashLibDxe.inf
> >
> > +  SecurityPkg/Library/BaseHashLib/BaseHashLibPei.inf
> >
> > +
> >
> >    #
> >
> >    # TCG Storage.
> >
> >    #
> >
> > diff --git a/SecurityPkg/SecurityPkg.uni b/SecurityPkg/SecurityPkg.uni
> > index 68587304d779..32ef97f81461 100644
> > --- a/SecurityPkg/SecurityPkg.uni
> > +++ b/SecurityPkg/SecurityPkg.uni
> > @@ -5,7 +5,7 @@
> >  // It also provides the definitions(including PPIs/PROTOCOLs/GUIDs
> > and library
> > classes)
> >
> >  // and libraries instances, which are used for those features.
> >
> >  //
> >
> > -// Copyright (c) 2009 - 2018, Intel Corporation. All rights
> > reserved.<BR>
> >
> > +// Copyright (c) 2009 - 2020, Intel Corporation. All rights
> > +reserved.<BR>
> >
> >  //
> >
> >  // SPDX-License-Identifier: BSD-2-Clause-Patent
> >
> >  //
> >
> > @@ -295,3 +295,16 @@
> >
> >
> >  #string STR_gEfiSecurityPkgTokenSpaceGuid_PcdTpm2AcpiTableLasa_HELP
> > #language en-US "This PCD defines LASA of TPM2 ACPI table\n\n"
> >
> >
> > "0 means this field is unsupported\n"
> >
> > +
> >
> >
> > +
> >      #string
> > STR_gEfiSecurityPkgTokenSpaceGuid_PcdSystemHashPolicy_PROMPT
> > #language en-US "HASH algorithm to verify unsigned PE/COFF image"
> >
> > +
> >
> > +#string STR_gEfiSecurityPkgTokenSpaceGuid_PcdSystemHashPolicy_HELP
> > #language en-US "This PCD indicates the HASH algorithm used by Unified
> > Hash API.<BR><BR>\n"
> >
> > +
> > + "Based on the value set, the
> > required algorithm is chosen to calculate\n"
> >
> > +                                                                                        "the hash desired.<BR>\n"
> >
> > +                                                                                        "0x00000001  -  MD4.<BR>\n"
> >
> > +                                                                                        "0x00000002  -  MD5.<BR>\n"
> >
> > +                                                                                        "0x00000003  -  SHA1.<BR>\n"
> >
> > +
> > + "0x00000004  -
> > SHA256.<BR>\n"
> >
> > +
> > + "0x00000005  -
> > SHA384.<BR>\n"
> >
> > +
> > + "0x00000006  -
> > SHA512.<BR>\n"
> >
> > +                                                                                        "0x00000007  -  SM3.<BR>"
> >
> > --
> > 2.16.2.windows.1
> 
> 
> 
> 
>