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200 lines
9.1 KiB
200 lines
9.1 KiB
4 months ago
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/* Microsoft Reference Implementation for TPM 2.0
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*
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* The copyright in this software is being made available under the BSD License,
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* included below. This software may be subject to other third party and
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* contributor rights, including patent rights, and no such rights are granted
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* under this license.
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*
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* Copyright (c) Microsoft Corporation
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*
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* All rights reserved.
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*
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* BSD License
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* Redistributions of source code must retain the above copyright notice, this list
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* of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice, this
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* list of conditions and the following disclaimer in the documentation and/or other
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* materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ""AS IS""
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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//** Introduction
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//
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// This header file is used to 'splice' the wolfcrypt hash code into the TPM code.
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//
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#ifndef HASH_LIB_DEFINED
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#define HASH_LIB_DEFINED
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#define HASH_LIB_WOLF
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#define HASH_ALIGNMENT RADIX_BYTES
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#ifndef WOLFSSL_USER_SETTINGS
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#define WOLFSSL_USER_SETTINGS
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#endif
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#if ALG_SHA384 || ALG_SHA512
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#define WOLFSSL_SHA512
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#endif
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#if ALG_SM3_256
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#undef ALG_SM3_256
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#define ALG_SM3_256 ALG_NO
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//#error "SM3 is not available"
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#endif
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#include <wolfssl/wolfcrypt/sha.h>
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#include <wolfssl/wolfcrypt/sha256.h>
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#include <wolfssl/wolfcrypt/sha512.h>
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//***************************************************************
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//** Links to the wolfcrypt HASH code
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//***************************************************************
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// Redefine the internal name used for each of the hash state structures to the
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// name used by the library.
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// These defines need to be known in all parts of the TPM so that the structure
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// sizes can be properly computed when needed.
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#define tpmHashStateSHA1_t wc_Sha
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#define tpmHashStateSHA256_t wc_Sha256
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#define tpmHashStateSHA384_t wc_Sha512
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#define tpmHashStateSHA512_t wc_Sha512
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#if ALG_SM3
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# error "The version of WolfCrypt used by this code does not support SM3"
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#endif
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// The defines below are only needed when compiling CryptHash.c or CryptSmac.c.
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// This isolation is primarily to avoid name space collision. However, if there
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// is a real collision, it will likely show up when the linker tries to put things
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// together.
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#ifdef _CRYPT_HASH_C_
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typedef BYTE *PBYTE;
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typedef const BYTE *PCBYTE;
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// Define the interface between CryptHash.c to the functions provided by the
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// library. For each method, define the calling parameters of the method and then
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// define how the method is invoked in CryptHash.c.
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//
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// All hashes are required to have the same calling sequence. If they don't, create
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// a simple adaptation function that converts from the "standard" form of the call
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// to the form used by the specific hash (and then send a nasty letter to the
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// person who wrote the hash function for the library).
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//
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// The macro that calls the method also defines how the
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// parameters get swizzled between the default form (in CryptHash.c)and the
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// library form.
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//
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// Initialize the hash context
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#define HASH_START_METHOD_DEF void (HASH_START_METHOD)(PANY_HASH_STATE state)
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#define HASH_START(hashState) \
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((hashState)->def->method.start)(&(hashState)->state);
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// Add data to the hash
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#define HASH_DATA_METHOD_DEF \
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void (HASH_DATA_METHOD)(PANY_HASH_STATE state, \
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PCBYTE buffer, \
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size_t size)
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#define HASH_DATA(hashState, dInSize, dIn) \
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((hashState)->def->method.data)(&(hashState)->state, dIn, dInSize)
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// Finalize the hash and get the digest
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#define HASH_END_METHOD_DEF \
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void (HASH_END_METHOD)(PANY_HASH_STATE state, BYTE *buffer)
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#define HASH_END(hashState, buffer) \
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((hashState)->def->method.end)(&(hashState)->state, buffer)
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// Copy the hash context
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// Note: For import, export, and copy, memcpy() is used since there is no
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// reformatting necessary between the internal and external forms.
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#define HASH_STATE_COPY_METHOD_DEF \
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void (HASH_STATE_COPY_METHOD)(PANY_HASH_STATE to, \
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PCANY_HASH_STATE from, \
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size_t size)
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#define HASH_STATE_COPY(hashStateOut, hashStateIn) \
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((hashStateIn)->def->method.copy)(&(hashStateOut)->state, \
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&(hashStateIn)->state, \
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(hashStateIn)->def->contextSize)
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// Copy (with reformatting when necessary) an internal hash structure to an
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// external blob
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#define HASH_STATE_EXPORT_METHOD_DEF \
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void (HASH_STATE_EXPORT_METHOD)(BYTE *to, \
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PCANY_HASH_STATE from, \
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size_t size)
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#define HASH_STATE_EXPORT(to, hashStateFrom) \
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((hashStateFrom)->def->method.copyOut) \
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(&(((BYTE *)(to))[offsetof(HASH_STATE, state)]), \
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&(hashStateFrom)->state, \
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(hashStateFrom)->def->contextSize)
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// Copy from an external blob to an internal formate (with reformatting when
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// necessary
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#define HASH_STATE_IMPORT_METHOD_DEF \
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void (HASH_STATE_IMPORT_METHOD)(PANY_HASH_STATE to, \
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const BYTE *from, \
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size_t size)
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#define HASH_STATE_IMPORT(hashStateTo, from) \
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((hashStateTo)->def->method.copyIn) \
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(&(hashStateTo)->state, \
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&(((const BYTE *)(from))[offsetof(HASH_STATE, state)]),\
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(hashStateTo)->def->contextSize)
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// Function aliases. The code in CryptHash.c uses the internal designation for the
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// functions. These need to be translated to the function names of the library.
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// Internal External
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// Designation Designation
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#define tpmHashStart_SHA1 wc_InitSha // external name of the
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// initialization method
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#define tpmHashData_SHA1 wc_ShaUpdate
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#define tpmHashEnd_SHA1 wc_ShaFinal
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#define tpmHashStateCopy_SHA1 memcpy
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#define tpmHashStateExport_SHA1 memcpy
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#define tpmHashStateImport_SHA1 memcpy
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#define tpmHashStart_SHA256 wc_InitSha256
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#define tpmHashData_SHA256 wc_Sha256Update
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#define tpmHashEnd_SHA256 wc_Sha256Final
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#define tpmHashStateCopy_SHA256 memcpy
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#define tpmHashStateExport_SHA256 memcpy
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#define tpmHashStateImport_SHA256 memcpy
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#define tpmHashStart_SHA384 wc_InitSha384
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#define tpmHashData_SHA384 wc_Sha384Update
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#define tpmHashEnd_SHA384 wc_Sha384Final
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#define tpmHashStateCopy_SHA384 memcpy
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#define tpmHashStateExport_SHA384 memcpy
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#define tpmHashStateImport_SHA384 memcpy
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#define tpmHashStart_SHA512 wc_InitSha512
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#define tpmHashData_SHA512 wc_Sha512Update
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#define tpmHashEnd_SHA512 wc_Sha512Final
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#define tpmHashStateCopy_SHA512 memcpy
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#define tpmHashStateExport_SHA512 memcpy
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#define tpmHashStateImport_SHA512 memcpy
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#endif // _CRYPT_HASH_C_
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#define LibHashInit()
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// This definition would change if there were something to report
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#define HashLibSimulationEnd()
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#endif // HASH_LIB_DEFINED
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