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/** @file
Ihis library abstract TPM2 hash calculation.
The platform can choose multiply hash, while caller just need invoke these API.
Then all hash value will be returned and/or extended.
Copyright (c) 2013, 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 _HASH_LIB_H_
#define _HASH_LIB_H_
#include <Uefi.h>
#include <Protocol/Hash.h>
typedef UINTN HASH_HANDLE;
/**
Start hash sequence.
@param HashHandle Hash handle.
@retval EFI_SUCCESS Hash sequence start and HandleHandle returned.
@retval EFI_OUT_OF_RESOURCES No enough resource to start hash.
**/
EFI_STATUS
EFIAPI
HashStart (
OUT HASH_HANDLE *HashHandle
);
/**
Update hash sequence data.
@param HashHandle Hash handle.
@param DataToHash Data to be hashed.
@param DataToHashLen Data size.
@retval EFI_SUCCESS Hash sequence updated.
**/
EFI_STATUS
EFIAPI
HashUpdate (
IN HASH_HANDLE HashHandle,
IN VOID *DataToHash,
IN UINTN DataToHashLen
);
/**
Hash sequence complete and extend to PCR.
@param HashHandle Hash handle.
@param PcrIndex PCR to be extended.
@param DataToHash Data to be hashed.
@param DataToHashLen Data size.
@param DigestList Digest list.
@retval EFI_SUCCESS Hash sequence complete and DigestList is returned.
**/
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 data and extend to PCR.
@param PcrIndex PCR to be extended.
@param DataToHash Data to be hashed.
@param DataToHashLen Data size.
@param DigestList Digest list.
@retval EFI_SUCCESS Hash data and DigestList is returned.
**/
EFI_STATUS
EFIAPI
HashAndExtend (
IN TPMI_DH_PCR PcrIndex,
IN VOID *DataToHash,
IN UINTN DataToHashLen,
OUT TPML_DIGEST_VALUES *DigestList
);
/**
Start hash sequence.
@param HashHandle Hash handle.
@retval EFI_SUCCESS Hash sequence start and HandleHandle returned.
@retval EFI_OUT_OF_RESOURCES No enough resource to start hash.
**/
typedef
EFI_STATUS
(EFIAPI *HASH_INIT) (
OUT HASH_HANDLE *HashHandle
);
/**
Update hash sequence data.
@param HashHandle Hash handle.
@param DataToHash Data to be hashed.
@param DataToHashLen Data size.
@retval EFI_SUCCESS Hash sequence updated.
**/
typedef
EFI_STATUS
(EFIAPI *HASH_UPDATE) (
IN HASH_HANDLE HashHandle,
IN VOID *DataToHash,
IN UINTN DataToHashLen
);
/**
Complete hash sequence complete.
@param HashHandle Hash handle.
@param DigestList Digest list.
@retval EFI_SUCCESS Hash sequence complete and DigestList is returned.
**/
typedef
EFI_STATUS
(EFIAPI *HASH_FINAL) (
IN HASH_HANDLE HashHandle,
OUT TPML_DIGEST_VALUES *DigestList
);
#define HASH_ALGORITHM_SHA1_GUID EFI_HASH_ALGORITHM_SHA1_GUID
#define HASH_ALGORITHM_SHA256_GUID EFI_HASH_ALGORITHM_SHA256_GUID
#define HASH_ALGORITHM_SHA384_GUID EFI_HASH_ALGORITHM_SHA384_GUID
#define HASH_ALGORITHM_SHA512_GUID EFI_HASH_ALGORITHM_SHA512_GUID
typedef struct {
EFI_GUID HashGuid;
HASH_INIT HashInit;
HASH_UPDATE HashUpdate;
HASH_FINAL HashFinal;
} HASH_INTERFACE;
/**
This service register Hash.
@param HashInterface Hash interface
@retval EFI_SUCCESS This hash interface is registered successfully.
@retval EFI_UNSUPPORTED System does not support register this interface.
@retval EFI_ALREADY_STARTED System already register this interface.
**/
EFI_STATUS
EFIAPI
RegisterHashInterfaceLib (
IN HASH_INTERFACE *HashInterface
);
#endif
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