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/** @file
This 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 - 2016, Intel Corporation. All rights reserved. <BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#ifndef _HASH_LIB_H_
#define _HASH_LIB_H_
#include <Uefi.h>
#include <Protocol/Hash.h>
#include <IndustryStandard/Tpm20.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
#define HASH_ALGORITHM_SM3_256_GUID \
{ \
0x251C7818, 0x0DBF, 0xE619, { 0x7F, 0xC2, 0xD6, 0xAC, 0x43, 0x42, 0x7D, 0xA3 } \
}
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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