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/* Microsoft Reference Implementation for TPM 2.0
*
* The copyright in this software is being made available under the BSD License,
* included below. This software may be subject to other third party and
* contributor rights, including patent rights, and no such rights are granted
* under this license.
*
* Copyright (c) Microsoft Corporation
*
* All rights reserved.
*
* BSD License
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this list
* of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice, this
* list of conditions and the following disclaimer in the documentation and/or other
* materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ""AS IS""
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
//** Introduction
//
// This header file is used to 'splice' the wolfcrypt hash code into the TPM code.
//
#ifndef _TPM_TO_WOLF_HASH_H_
#define _TPM_TO_WOLF_HASH_H_
#if HASH_LIB == WOLF
#define WOLFSSL_USER_SETTINGS
#include <wolfSSL/wolfCrypt/sha.h>
#include <wolfSSL/wolfCrypt/sha256.h>
#include <wolfSSL/wolfCrypt/sha512.h>
//***************************************************************
//** Links to the wolfcrypt HASH code
//***************************************************************
// Redefine the internal name used for each of the hash state structures to the
// name used by the library.
// These defines need to be known in all parts of the TPM so that the structure
// sizes can be properly computed when needed.
#define tpmHashStateSHA1_t wc_Sha
#define tpmHashStateSHA256_t wc_Sha256
#define tpmHashStateSHA384_t wc_Sha512
#define tpmHashStateSHA512_t wc_Sha512
#ifdef TPM_ALG_SM3
# error "The version of WolfCrypt used by this code does not support SM3"
#endif
// The defines below are only needed when compiling CryptHash.c or CryptSmac.c.
// This isolation is primarily to avoid name space collision. However, if there
// is a real collision, it will likely show up when the linker tries to put things
// together.
#ifdef _CRYPT_HASH_C_
typedef BYTE *PBYTE;
typedef const BYTE *PCBYTE;
// Define the interface between CryptHash.c to the functions provided by the
// library. For each method, define the calling parameters of the method and then
// define how the method is invoked in CryptHash.c.
//
// All hashes are required to have the same calling sequence. If they don't, create
// a simple adaptation function that converts from the "standard" form of the call
// to the form used by the specific hash (and then send a nasty letter to the
// person who wrote the hash function for the library).
//
// The macro that calls the method also defines how the
// parameters get swizzled between the default form (in CryptHash.c)and the
// library form.
//
// Initialize the hash context
#define HASH_START_METHOD_DEF void (HASH_START_METHOD)(PANY_HASH_STATE state)
#define HASH_START(hashState) \
((hashState)->def->method.start)(&(hashState)->state);
// Add data to the hash
#define HASH_DATA_METHOD_DEF \
void (HASH_DATA_METHOD)(PANY_HASH_STATE state, \
PCBYTE buffer, \
size_t size)
#define HASH_DATA(hashState, dInSize, dIn) \
((hashState)->def->method.data)(&(hashState)->state, dIn, dInSize)
// Finalize the hash and get the digest
#define HASH_END_METHOD_DEF \
void (HASH_END_METHOD)(PANY_HASH_STATE state, BYTE *buffer)
#define HASH_END(hashState, buffer) \
((hashState)->def->method.end)(&(hashState)->state, buffer)
// Copy the hash context
// Note: For import, export, and copy, memcpy() is used since there is no
// reformatting necessary between the internal and external forms.
#define HASH_STATE_COPY_METHOD_DEF \
void (HASH_STATE_COPY_METHOD)(PANY_HASH_STATE to, \
PCANY_HASH_STATE from, \
size_t size)
#define HASH_STATE_COPY(hashStateOut, hashStateIn) \
((hashStateIn)->def->method.copy)(&(hashStateOut)->state, \
&(hashStateIn)->state, \
(hashStateIn)->def->contextSize)
// Copy (with reformatting when necessary) an internal hash structure to an
// external blob
#define HASH_STATE_EXPORT_METHOD_DEF \
void (HASH_STATE_EXPORT_METHOD)(BYTE *to, \
PCANY_HASH_STATE from, \
size_t size)
#define HASH_STATE_EXPORT(to, hashStateFrom) \
((hashStateFrom)->def->method.copyOut) \
(&(((BYTE *)(to))[offsetof(HASH_STATE, state)]), \
&(hashStateFrom)->state, \
(hashStateFrom)->def->contextSize)
// Copy from an external blob to an internal formate (with reformatting when
// necessary
#define HASH_STATE_IMPORT_METHOD_DEF \
void (HASH_STATE_IMPORT_METHOD)(PANY_HASH_STATE to, \
const BYTE *from, \
size_t size)
#define HASH_STATE_IMPORT(hashStateTo, from) \
((hashStateTo)->def->method.copyIn) \
(&(hashStateTo)->state, \
&(((const BYTE *)(from))[offsetof(HASH_STATE, state)]),\
(hashStateTo)->def->contextSize)
// Function aliases. The code in CryptHash.c uses the internal designation for the
// functions. These need to be translated to the function names of the library.
// Internal External
// Designation Designation
#define tpmHashStart_SHA1 wc_InitSha // external name of the
// initialization method
#define tpmHashData_SHA1 wc_ShaUpdate
#define tpmHashEnd_SHA1 wc_ShaFinal
#define tpmHashStateCopy_SHA1 memcpy
#define tpmHashStateExport_SHA1 memcpy
#define tpmHashStateImport_SHA1 memcpy
#define tpmHashStart_SHA256 wc_InitSha256
#define tpmHashData_SHA256 wc_Sha256Update
#define tpmHashEnd_SHA256 wc_Sha256Final
#define tpmHashStateCopy_SHA256 memcpy
#define tpmHashStateExport_SHA256 memcpy
#define tpmHashStateImport_SHA256 memcpy
#define tpmHashStart_SHA384 wc_InitSha384
#define tpmHashData_SHA384 wc_Sha384Update
#define tpmHashEnd_SHA384 wc_Sha384Final
#define tpmHashStateCopy_SHA384 memcpy
#define tpmHashStateExport_SHA384 memcpy
#define tpmHashStateImport_SHA384 memcpy
#define tpmHashStart_SHA512 wc_InitSha512
#define tpmHashData_SHA512 wc_Sha512Update
#define tpmHashEnd_SHA512 wc_Sha512Final
#define tpmHashStateCopy_SHA512 memcpy
#define tpmHashStateExport_SHA512 memcpy
#define tpmHashStateImport_SHA512 memcpy
#endif // _CRYPT_HASH_C_
#define LibHashInit()
// This definition would change if there were something to report
#define HashLibSimulationEnd()
#endif // HASH_LIB == WOLF
#endif //
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