HashLibTdx.c File Reference

#include <PiPei.h>
#include <Library/BaseLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/DebugLib.h>
#include <Library/PcdLib.h>
#include <Library/HashLib.h>
#include <Library/TdxLib.h>
#include <Protocol/CcMeasurement.h>

Go to the source code of this file.

Functions
EFI_STATUS EFIAPI	HashStart (OUT HASH_HANDLE *HashHandle)
EFI_STATUS EFIAPI	HashUpdate (IN HASH_HANDLE HashHandle, IN VOID *DataToHash, IN UINTN DataToHashLen)
EFI_STATUS EFIAPI	HashCompleteAndExtend (IN HASH_HANDLE HashHandle, IN TPMI_DH_PCR PcrIndex, IN VOID *DataToHash, IN UINTN DataToHashLen, OUT TPML_DIGEST_VALUES *DigestList)
EFI_STATUS EFIAPI	HashAndExtend (IN TPMI_DH_PCR PcrIndex, IN VOID *DataToHash, IN UINTN DataToHashLen, OUT TPML_DIGEST_VALUES *DigestList)
EFI_STATUS EFIAPI	RegisterHashInterfaceLib (IN HASH_INTERFACE *HashInterface)

Variables
EFI_GUID	mSha384Guid = HASH_ALGORITHM_SHA384_GUID
HASH_INTERFACE	mHashInterface
UINTN	mHashInterfaceCount = 0

Detailed Description

This library is HashLib for Tdx.

Copyright (c) 2021 - 2022, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file HashLibTdx.c.

Function Documentation

HashAndExtend()

EFI_STATUS EFIAPI HashAndExtend	(	IN TPMI_DH_PCR	PcrIndex,
		IN VOID *	DataToHash,
		IN UINTN	DataToHashLen,
		OUT TPML_DIGEST_VALUES *	DigestList
	)

Hash data and extend to RTMR.

Parameters

PcrIndex	PCR to be extended.
DataToHash	Data to be hashed.
DataToHashLen	Data size.
DigestList	Digest list.

Return values

EFI_SUCCESS

Hash data and DigestList is returned.

Definition at line 150 of file HashLibTdx.c.

HashCompleteAndExtend()

EFI_STATUS EFIAPI HashCompleteAndExtend	(	IN HASH_HANDLE	HashHandle,
		IN TPMI_DH_PCR	PcrIndex,
		IN VOID *	DataToHash,
		IN UINTN	DataToHashLen,
		OUT TPML_DIGEST_VALUES *	DigestList
	)

Hash sequence complete and extend to PCR.

Parameters

HashHandle	Hash handle.
PcrIndex	PCR to be extended.
DataToHash	Data to be hashed.
DataToHashLen	Data size.
DigestList	Digest list.

Return values

EFI_SUCCESS

Hash sequence complete and DigestList is returned.

Definition at line 98 of file HashLibTdx.c.

HashStart()

EFI_STATUS EFIAPI HashStart

(

OUT HASH_HANDLE *

HashHandle

)

Start hash sequence.

Parameters

HashHandle

Hash handle.

Return values

EFI_SUCCESS	Hash sequence start and HandleHandle returned.
EFI_OUT_OF_RESOURCES	No enough resource to start hash.

Definition at line 39 of file HashLibTdx.c.

HashUpdate()

EFI_STATUS EFIAPI HashUpdate	(	IN HASH_HANDLE	HashHandle,
		IN VOID *	DataToHash,
		IN UINTN	DataToHashLen
	)

Update hash sequence data.

Parameters

HashHandle	Hash handle.
DataToHash	Data to be hashed.
DataToHashLen	Data size.

Return values

EFI_SUCCESS

Hash sequence updated.

Definition at line 69 of file HashLibTdx.c.

RegisterHashInterfaceLib()

EFI_STATUS EFIAPI RegisterHashInterfaceLib

(

IN HASH_INTERFACE *

HashInterface

)

This service register Hash.

Parameters

HashInterface

Hash interface

Return values

EFI_SUCCESS	This hash interface is registered successfully.
EFI_UNSUPPORTED	System does not support register this interface.
EFI_ALREADY_STARTED	System already register this interface.

Definition at line 185 of file HashLibTdx.c.

Variable Documentation

mHashInterface

HASH_INTERFACE mHashInterface

Initial value:

=  {
  { 0 }, NULL, NULL, NULL
}

Definition at line 23 of file HashLibTdx.c.

mHashInterfaceCount

UINTN mHashInterfaceCount = 0

Definition at line 27 of file HashLibTdx.c.

mSha384Guid

EFI_GUID mSha384Guid = HASH_ALGORITHM_SHA384_GUID

Definition at line 18 of file HashLibTdx.c.