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/** @file
Unified Hash API Implementation
This file implements the Unified Hash API.
This API, when called, will calculate the Hash using the
hashing algorithm specified by PcdHashApiLibPolicy.
Copyright (c) 2020-2022, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <Base.h>
#include <IndustryStandard/Tpm20.h>
#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/HashApiLib.h>
/**
Retrieves the size, in bytes, of the context buffer required for hash operations.
@return The size, in bytes, of the context buffer required for hash operations.
**/
UINTN
EFIAPI
HashApiGetContextSize (
VOID
)
{
switch (PcdGet32 (PcdHashApiLibPolicy)) {
#ifndef DISABLE_SHA1_DEPRECATED_INTERFACES
case HASH_ALG_SHA1:
return Sha1GetContextSize ();
break;
#endif
case HASH_ALG_SHA256:
return Sha256GetContextSize ();
break;
case HASH_ALG_SHA384:
return Sha384GetContextSize ();
break;
case HASH_ALG_SHA512:
return Sha512GetContextSize ();
break;
case HASH_ALG_SM3_256:
return Sm3GetContextSize ();
break;
default:
ASSERT (FALSE);
return 0;
break;
}
}
/**
Init hash sequence.
@param[out] HashContext Hash context.
@retval TRUE Hash start and HashHandle returned.
@retval FALSE Hash Init unsuccessful.
**/
BOOLEAN
EFIAPI
HashApiInit (
OUT HASH_API_CONTEXT HashContext
)
{
switch (PcdGet32 (PcdHashApiLibPolicy)) {
#ifndef DISABLE_SHA1_DEPRECATED_INTERFACES
case HASH_ALG_SHA1:
return Sha1Init (HashContext);
break;
#endif
case HASH_ALG_SHA256:
return Sha256Init (HashContext);
break;
case HASH_ALG_SHA384:
return Sha384Init (HashContext);
break;
case HASH_ALG_SHA512:
return Sha512Init (HashContext);
break;
case HASH_ALG_SM3_256:
return Sm3Init (HashContext);
break;
default:
ASSERT (FALSE);
return FALSE;
break;
}
}
/**
Makes a copy of an existing hash context.
@param[in] HashContext Hash context.
@param[out] NewHashContext New copy of hash context.
@retval TRUE Hash context copy succeeded.
@retval FALSE Hash context copy failed.
**/
BOOLEAN
EFIAPI
HashApiDuplicate (
IN HASH_API_CONTEXT HashContext,
OUT HASH_API_CONTEXT NewHashContext
)
{
switch (PcdGet32 (PcdHashApiLibPolicy)) {
#ifndef DISABLE_SHA1_DEPRECATED_INTERFACES
case HASH_ALG_SHA1:
return Sha1Duplicate (HashContext, NewHashContext);
break;
#endif
case HASH_ALG_SHA256:
return Sha256Duplicate (HashContext, NewHashContext);
break;
case HASH_ALG_SHA384:
return Sha384Duplicate (HashContext, NewHashContext);
break;
case HASH_ALG_SHA512:
return Sha512Duplicate (HashContext, NewHashContext);
break;
case HASH_ALG_SM3_256:
return Sm3Duplicate (HashContext, NewHashContext);
break;
default:
ASSERT (FALSE);
return FALSE;
break;
}
}
/**
Update hash data.
@param[in] HashContext Hash context.
@param[in] DataToHash Data to be hashed.
@param[in] DataToHashLen Data size.
@retval TRUE Hash updated.
@retval FALSE Hash updated unsuccessful.
**/
BOOLEAN
EFIAPI
HashApiUpdate (
IN HASH_API_CONTEXT HashContext,
IN VOID *DataToHash,
IN UINTN DataToHashLen
)
{
switch (PcdGet32 (PcdHashApiLibPolicy)) {
#ifndef DISABLE_SHA1_DEPRECATED_INTERFACES
case HASH_ALG_SHA1:
return Sha1Update (HashContext, DataToHash, DataToHashLen);
break;
#endif
case HASH_ALG_SHA256:
return Sha256Update (HashContext, DataToHash, DataToHashLen);
break;
case HASH_ALG_SHA384:
return Sha384Update (HashContext, DataToHash, DataToHashLen);
break;
case HASH_ALG_SHA512:
return Sha512Update (HashContext, DataToHash, DataToHashLen);
break;
case HASH_ALG_SM3_256:
return Sm3Update (HashContext, DataToHash, DataToHashLen);
break;
default:
ASSERT (FALSE);
return FALSE;
break;
}
}
/**
Hash complete.
@param[in] HashContext Hash context.
@param[out] Digest Hash Digest.
@retval TRUE Hash complete and Digest is returned.
@retval FALSE Hash complete unsuccessful.
**/
BOOLEAN
EFIAPI
HashApiFinal (
IN HASH_API_CONTEXT HashContext,
OUT UINT8 *Digest
)
{
switch (PcdGet32 (PcdHashApiLibPolicy)) {
#ifndef DISABLE_SHA1_DEPRECATED_INTERFACES
case HASH_ALG_SHA1:
return Sha1Final (HashContext, Digest);
break;
#endif
case HASH_ALG_SHA256:
return Sha256Final (HashContext, Digest);
break;
case HASH_ALG_SHA384:
return Sha384Final (HashContext, Digest);
break;
case HASH_ALG_SHA512:
return Sha512Final (HashContext, Digest);
break;
case HASH_ALG_SM3_256:
return Sm3Final (HashContext, Digest);
break;
default:
ASSERT (FALSE);
return FALSE;
break;
}
}
/**
Computes hash message digest of a input data buffer.
@param[in] DataToHash Data to be hashed.
@param[in] DataToHashLen Data size.
@param[out] Digest Hash Digest.
@retval TRUE Hash digest computation succeeded.
@retval FALSE Hash digest computation failed.
**/
BOOLEAN
EFIAPI
HashApiHashAll (
IN CONST VOID *DataToHash,
IN UINTN DataToHashLen,
OUT UINT8 *Digest
)
{
switch (PcdGet32 (PcdHashApiLibPolicy)) {
#ifndef DISABLE_SHA1_DEPRECATED_INTERFACES
case HASH_ALG_SHA1:
return Sha1HashAll (DataToHash, DataToHashLen, Digest);
break;
#endif
case HASH_ALG_SHA256:
return Sha256HashAll (DataToHash, DataToHashLen, Digest);
break;
case HASH_ALG_SHA384:
return Sha384HashAll (DataToHash, DataToHashLen, Digest);
break;
case HASH_ALG_SHA512:
return Sha512HashAll (DataToHash, DataToHashLen, Digest);
break;
case HASH_ALG_SM3_256:
return Sm3HashAll (DataToHash, DataToHashLen, Digest);
break;
default:
ASSERT (FALSE);
return FALSE;
break;
}
}
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