/** @file | |
This library is BaseCrypto SHA1 hash instance. | |
It can be registered to BaseCrypto router, to serve as hash engine. | |
Copyright (c) 2013 - 2018, Intel Corporation. All rights reserved. <BR> | |
SPDX-License-Identifier: BSD-2-Clause-Patent | |
**/ | |
#include <PiPei.h> | |
#include <Library/BaseLib.h> | |
#include <Library/BaseMemoryLib.h> | |
#include <Library/Tpm2CommandLib.h> | |
#include <Library/DebugLib.h> | |
#include <Library/BaseCryptLib.h> | |
#include <Library/MemoryAllocationLib.h> | |
#include <Library/HashLib.h> | |
/** | |
The function set SHA1 to digest list. | |
@param DigestList digest list | |
@param Sha1Digest SHA1 digest | |
**/ | |
VOID | |
Tpm2SetSha1ToDigestList ( | |
IN TPML_DIGEST_VALUES *DigestList, | |
IN UINT8 *Sha1Digest | |
) | |
{ | |
DigestList->count = 1; | |
DigestList->digests[0].hashAlg = TPM_ALG_SHA1; | |
CopyMem ( | |
DigestList->digests[0].digest.sha1, | |
Sha1Digest, | |
SHA1_DIGEST_SIZE | |
); | |
} | |
/** | |
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 | |
Sha1HashInit ( | |
OUT HASH_HANDLE *HashHandle | |
) | |
{ | |
VOID *Sha1Ctx; | |
UINTN CtxSize; | |
CtxSize = Sha1GetContextSize (); | |
Sha1Ctx = AllocatePool (CtxSize); | |
ASSERT (Sha1Ctx != NULL); | |
Sha1Init (Sha1Ctx); | |
*HashHandle = (HASH_HANDLE)Sha1Ctx; | |
return EFI_SUCCESS; | |
} | |
/** | |
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 | |
Sha1HashUpdate ( | |
IN HASH_HANDLE HashHandle, | |
IN VOID *DataToHash, | |
IN UINTN DataToHashLen | |
) | |
{ | |
VOID *Sha1Ctx; | |
Sha1Ctx = (VOID *)HashHandle; | |
Sha1Update (Sha1Ctx, DataToHash, DataToHashLen); | |
return EFI_SUCCESS; | |
} | |
/** | |
Complete hash sequence complete. | |
@param HashHandle Hash handle. | |
@param DigestList Digest list. | |
@retval EFI_SUCCESS Hash sequence complete and DigestList is returned. | |
**/ | |
EFI_STATUS | |
EFIAPI | |
Sha1HashFinal ( | |
IN HASH_HANDLE HashHandle, | |
OUT TPML_DIGEST_VALUES *DigestList | |
) | |
{ | |
UINT8 Digest[SHA1_DIGEST_SIZE]; | |
VOID *Sha1Ctx; | |
Sha1Ctx = (VOID *)HashHandle; | |
Sha1Final (Sha1Ctx, Digest); | |
FreePool (Sha1Ctx); | |
Tpm2SetSha1ToDigestList (DigestList, Digest); | |
return EFI_SUCCESS; | |
} | |
HASH_INTERFACE mSha1InternalHashInstance = { | |
HASH_ALGORITHM_SHA1_GUID, | |
Sha1HashInit, | |
Sha1HashUpdate, | |
Sha1HashFinal, | |
}; | |
/** | |
The function register SHA1 instance. | |
@retval EFI_SUCCESS SHA1 instance is registered, or system does not support register SHA1 instance | |
**/ | |
EFI_STATUS | |
EFIAPI | |
HashInstanceLibSha1Constructor ( | |
VOID | |
) | |
{ | |
EFI_STATUS Status; | |
Status = RegisterHashInterfaceLib (&mSha1InternalHashInstance); | |
if ((Status == EFI_SUCCESS) || (Status == EFI_UNSUPPORTED)) { | |
// | |
// Unsupported means platform policy does not need this instance enabled. | |
// | |
return EFI_SUCCESS; | |
} | |
return Status; | |
} |