Add TPM2 implementation.
signed off by: jiewen.yao@intel.com reviewed by: guo.dong@intel.com git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14687 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
508
SecurityPkg/Library/Tpm2CommandLib/Tpm2Sequences.c
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508
SecurityPkg/Library/Tpm2CommandLib/Tpm2Sequences.c
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/** @file
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Implement TPM2 Sequences related command.
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Copyright (c) 2013, Intel Corporation. All rights reserved. <BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include <IndustryStandard/UefiTcgPlatform.h>
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#include <Library/Tpm2CommandLib.h>
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#include <Library/Tpm2DeviceLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/BaseLib.h>
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#include <Library/DebugLib.h>
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#pragma pack(1)
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typedef struct {
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TPM2_COMMAND_HEADER Header;
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TPM2B_AUTH Auth;
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TPMI_ALG_HASH HashAlg;
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} TPM2_HASH_SEQUENCE_START_COMMAND;
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typedef struct {
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TPM2_RESPONSE_HEADER Header;
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TPMI_DH_OBJECT SequenceHandle;
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} TPM2_HASH_SEQUENCE_START_RESPONSE;
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typedef struct {
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TPM2_COMMAND_HEADER Header;
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TPMI_DH_OBJECT SequenceHandle;
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UINT32 AuthorizationSize;
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TPMS_AUTH_COMMAND AuthSessionSeq;
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TPM2B_MAX_BUFFER Buffer;
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} TPM2_SEQUENCE_UPDATE_COMMAND;
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typedef struct {
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TPM2_RESPONSE_HEADER Header;
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UINT32 ParameterSize;
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TPMS_AUTH_RESPONSE AuthSessionSeq;
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} TPM2_SEQUENCE_UPDATE_RESPONSE;
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typedef struct {
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TPM2_COMMAND_HEADER Header;
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TPMI_DH_PCR PcrHandle;
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TPMI_DH_OBJECT SequenceHandle;
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UINT32 AuthorizationSize;
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TPMS_AUTH_COMMAND AuthSessionPcr;
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TPMS_AUTH_COMMAND AuthSessionSeq;
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TPM2B_MAX_BUFFER Buffer;
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} TPM2_EVENT_SEQUENCE_COMPLETE_COMMAND;
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typedef struct {
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TPM2_RESPONSE_HEADER Header;
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UINT32 ParameterSize;
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TPML_DIGEST_VALUES Results;
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TPMS_AUTH_RESPONSE AuthSessionPcr;
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TPMS_AUTH_RESPONSE AuthSessionSeq;
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} TPM2_EVENT_SEQUENCE_COMPLETE_RESPONSE;
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typedef struct {
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TPM2_COMMAND_HEADER Header;
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TPMI_DH_OBJECT SequenceHandle;
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UINT32 AuthorizationSize;
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TPMS_AUTH_COMMAND AuthSessionSeq;
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TPM2B_MAX_BUFFER Buffer;
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TPMI_RH_HIERARCHY Hierarchy;
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} TPM2_SEQUENCE_COMPLETE_COMMAND;
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typedef struct {
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TPM2_RESPONSE_HEADER Header;
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UINT32 ParameterSize;
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TPM2B_DIGEST Digest;
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TPMS_AUTH_RESPONSE AuthSessionSeq;
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} TPM2_SEQUENCE_COMPLETE_RESPONSE;
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#pragma pack()
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/**
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This command starts a hash or an Event sequence.
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If hashAlg is an implemented hash, then a hash sequence is started.
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If hashAlg is TPM_ALG_NULL, then an Event sequence is started.
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@param[in] HashAlg The hash algorithm to use for the hash sequence
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An Event sequence starts if this is TPM_ALG_NULL.
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@param[out] SequenceHandle A handle to reference the sequence
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@retval EFI_SUCCESS Operation completed successfully.
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@retval EFI_DEVICE_ERROR Unexpected device behavior.
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**/
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EFI_STATUS
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EFIAPI
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Tpm2HashSequenceStart (
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IN TPMI_ALG_HASH HashAlg,
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OUT TPMI_DH_OBJECT *SequenceHandle
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)
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{
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EFI_STATUS Status;
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TPM2_HASH_SEQUENCE_START_COMMAND Cmd;
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TPM2_HASH_SEQUENCE_START_RESPONSE Res;
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UINT32 CmdSize;
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UINT32 RespSize;
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UINT8 *Buffer;
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UINT32 ResultBufSize;
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ZeroMem(&Cmd, sizeof(Cmd));
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//
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// Construct command
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//
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Cmd.Header.tag = SwapBytes16(TPM_ST_NO_SESSIONS);
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Cmd.Header.commandCode = SwapBytes32(TPM_CC_HashSequenceStart);
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Buffer = (UINT8 *)&Cmd.Auth;
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// auth = nullAuth
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WriteUnaligned16 ((UINT16 *)Buffer, SwapBytes16(0));
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Buffer += sizeof(UINT16);
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// hashAlg
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WriteUnaligned16 ((UINT16 *)Buffer, SwapBytes16(HashAlg));
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Buffer += sizeof(UINT16);
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CmdSize = (UINT32)(Buffer - (UINT8 *)&Cmd);
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Cmd.Header.paramSize = SwapBytes32(CmdSize);
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//
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// Call the TPM
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//
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ResultBufSize = sizeof(Res);
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Status = Tpm2SubmitCommand (CmdSize, (UINT8 *)&Cmd, &ResultBufSize, (UINT8 *)&Res);
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if (EFI_ERROR(Status)) {
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return Status;
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}
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if (ResultBufSize > sizeof(Res)) {
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DEBUG ((EFI_D_ERROR, "HashSequenceStart: Failed ExecuteCommand: Buffer Too Small\r\n"));
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return EFI_BUFFER_TOO_SMALL;
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}
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//
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// Validate response headers
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//
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RespSize = SwapBytes32(Res.Header.paramSize);
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if (RespSize > sizeof(Res)) {
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DEBUG ((EFI_D_ERROR, "HashSequenceStart: Response size too large! %d\r\n", RespSize));
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return EFI_BUFFER_TOO_SMALL;
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}
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//
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// Fail if command failed
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//
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if (SwapBytes32(Res.Header.responseCode) != TPM_RC_SUCCESS) {
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DEBUG ((EFI_D_ERROR, "HashSequenceStart: Response Code error! 0x%08x\r\n", SwapBytes32(Res.Header.responseCode)));
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return EFI_DEVICE_ERROR;
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}
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//
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// Unmarshal the response
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//
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// sequenceHandle
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*SequenceHandle = SwapBytes32(Res.SequenceHandle);
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return EFI_SUCCESS;
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}
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/**
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This command is used to add data to a hash or HMAC sequence.
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The amount of data in buffer may be any size up to the limits of the TPM.
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NOTE: In all TPM, a buffer size of 1,024 octets is allowed.
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@param[in] SequenceHandle Handle for the sequence object
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@param[in] Buffer Data to be added to hash
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@retval EFI_SUCCESS Operation completed successfully.
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@retval EFI_DEVICE_ERROR Unexpected device behavior.
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**/
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EFI_STATUS
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EFIAPI
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Tpm2SequenceUpdate (
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IN TPMI_DH_OBJECT SequenceHandle,
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IN TPM2B_MAX_BUFFER *Buffer
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)
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{
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EFI_STATUS Status;
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TPM2_SEQUENCE_UPDATE_COMMAND Cmd;
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TPM2_SEQUENCE_UPDATE_RESPONSE Res;
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UINT32 CmdSize;
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UINT32 RespSize;
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UINT8 *BufferPtr;
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UINT32 SessionInfoSize;
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UINT32 ResultBufSize;
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ZeroMem(&Cmd, sizeof(Cmd));
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//
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// Construct command
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//
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Cmd.Header.tag = SwapBytes16(TPM_ST_SESSIONS);
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Cmd.Header.commandCode = SwapBytes32(TPM_CC_SequenceUpdate);
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Cmd.SequenceHandle = SwapBytes32(SequenceHandle);
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//
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// Add in Auth session
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//
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BufferPtr = (UINT8 *)&Cmd.AuthSessionSeq;
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// sessionInfoSize
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SessionInfoSize = CopyAuthSessionCommand (NULL, BufferPtr);
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BufferPtr += SessionInfoSize;
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Cmd.AuthorizationSize = SwapBytes32(SessionInfoSize);
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// buffer.size
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WriteUnaligned16 ((UINT16 *)BufferPtr, SwapBytes16(Buffer->size));
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BufferPtr += sizeof(UINT16);
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CopyMem(BufferPtr, &Buffer->buffer, Buffer->size);
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BufferPtr += Buffer->size;
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CmdSize = (UINT32)(BufferPtr - (UINT8 *)&Cmd);
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Cmd.Header.paramSize = SwapBytes32(CmdSize);
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//
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// Call the TPM
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//
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ResultBufSize = sizeof(Res);
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Status = Tpm2SubmitCommand (CmdSize, (UINT8 *)&Cmd,&ResultBufSize, (UINT8 *)&Res);
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if (EFI_ERROR(Status)) {
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return Status;
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}
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if (ResultBufSize > sizeof(Res)) {
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DEBUG ((EFI_D_ERROR, "SequenceUpdate: Failed ExecuteCommand: Buffer Too Small\r\n"));
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return EFI_BUFFER_TOO_SMALL;
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}
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//
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// Validate response headers
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//
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RespSize = SwapBytes32(Res.Header.paramSize);
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if (RespSize > sizeof(Res)) {
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DEBUG ((EFI_D_ERROR, "SequenceUpdate: Response size too large! %d\r\n", RespSize));
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return EFI_BUFFER_TOO_SMALL;
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}
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//
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// Fail if command failed
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//
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if (SwapBytes32(Res.Header.responseCode) != TPM_RC_SUCCESS) {
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DEBUG ((EFI_D_ERROR, "SequenceUpdate: Response Code error! 0x%08x\r\n", SwapBytes32(Res.Header.responseCode)));
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return EFI_DEVICE_ERROR;
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}
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//
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// Unmarshal the response
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//
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// None
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return EFI_SUCCESS;
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}
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/**
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This command adds the last part of data, if any, to an Event sequence and returns the result in a digest list.
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If pcrHandle references a PCR and not TPM_RH_NULL, then the returned digest list is processed in
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the same manner as the digest list input parameter to TPM2_PCR_Extend() with the pcrHandle in each
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bank extended with the associated digest value.
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@param[in] PcrHandle PCR to be extended with the Event data
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@param[in] SequenceHandle Authorization for the sequence
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@param[in] Buffer Data to be added to the Event
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@param[out] Results List of digests computed for the PCR
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@retval EFI_SUCCESS Operation completed successfully.
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@retval EFI_DEVICE_ERROR Unexpected device behavior.
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**/
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EFI_STATUS
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EFIAPI
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Tpm2EventSequenceComplete (
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IN TPMI_DH_PCR PcrHandle,
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IN TPMI_DH_OBJECT SequenceHandle,
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IN TPM2B_MAX_BUFFER *Buffer,
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OUT TPML_DIGEST_VALUES *Results
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)
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{
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EFI_STATUS Status;
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TPM2_EVENT_SEQUENCE_COMPLETE_COMMAND Cmd;
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TPM2_EVENT_SEQUENCE_COMPLETE_RESPONSE Res;
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UINT32 CmdSize;
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UINT32 RespSize;
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UINT8 *BufferPtr;
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UINT32 SessionInfoSize;
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UINT32 SessionInfoSize2;
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UINT32 Index;
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UINT32 ResultBufSize;
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UINT16 DigestSize;
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ZeroMem(&Cmd, sizeof(Cmd));
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//
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// Construct command
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//
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Cmd.Header.tag = SwapBytes16(TPM_ST_SESSIONS);
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Cmd.Header.commandCode = SwapBytes32(TPM_CC_EventSequenceComplete);
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Cmd.PcrHandle = SwapBytes32(PcrHandle);
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Cmd.SequenceHandle = SwapBytes32(SequenceHandle);
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//
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// Add in pcrHandle Auth session
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//
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BufferPtr = (UINT8 *)&Cmd.AuthSessionPcr;
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// sessionInfoSize
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SessionInfoSize = CopyAuthSessionCommand (NULL, BufferPtr);
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BufferPtr += SessionInfoSize;
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// sessionInfoSize
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SessionInfoSize2 = CopyAuthSessionCommand (NULL, BufferPtr);
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BufferPtr += SessionInfoSize2;
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Cmd.AuthorizationSize = SwapBytes32(SessionInfoSize + SessionInfoSize2);
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// buffer.size
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WriteUnaligned16 ((UINT16 *)BufferPtr, SwapBytes16(Buffer->size));
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BufferPtr += sizeof(UINT16);
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CopyMem(BufferPtr, &Buffer->buffer[0], Buffer->size);
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BufferPtr += Buffer->size;
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CmdSize = (UINT32)(BufferPtr - (UINT8 *)&Cmd);
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Cmd.Header.paramSize = SwapBytes32(CmdSize);
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//
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// Call the TPM
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//
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ResultBufSize = sizeof(Res);
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Status = Tpm2SubmitCommand (CmdSize, (UINT8 *)&Cmd, &ResultBufSize, (UINT8 *)&Res);
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if (EFI_ERROR(Status)) {
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return Status;
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}
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if (ResultBufSize > sizeof(Res)) {
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DEBUG ((EFI_D_ERROR, "EventSequenceComplete: Failed ExecuteCommand: Buffer Too Small\r\n"));
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return EFI_BUFFER_TOO_SMALL;
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}
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//
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// Validate response headers
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//
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RespSize = SwapBytes32(Res.Header.paramSize);
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if (RespSize > sizeof(Res)) {
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DEBUG ((EFI_D_ERROR, "EventSequenceComplete: Response size too large! %d\r\n", RespSize));
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return EFI_BUFFER_TOO_SMALL;
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}
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//
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// Fail if command failed
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//
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if (SwapBytes32(Res.Header.responseCode) != TPM_RC_SUCCESS) {
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DEBUG ((EFI_D_ERROR, "EventSequenceComplete: Response Code error! 0x%08x\r\n", SwapBytes32(Res.Header.responseCode)));
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return EFI_DEVICE_ERROR;
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}
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//
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// Unmarshal the response
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//
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BufferPtr = (UINT8 *)&Res.Results;
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// count
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Results->count = SwapBytes32(ReadUnaligned32 ((UINT32 *)BufferPtr));
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BufferPtr += sizeof(UINT32);
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for (Index = 0; Index < Results->count; Index++) {
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Results->digests[Index].hashAlg = SwapBytes16(ReadUnaligned16 ((UINT16 *)BufferPtr));
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BufferPtr += sizeof(UINT16);
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DigestSize = GetHashSizeFromAlgo (Results->digests[Index].hashAlg);
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if (DigestSize == 0) {
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DEBUG ((EFI_D_ERROR, "EventSequenceComplete: Unknown hash algorithm %d\r\n", Results->digests[Index].hashAlg));
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return EFI_DEVICE_ERROR;
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}
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CopyMem(
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&Results->digests[Index].digest,
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BufferPtr,
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DigestSize
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);
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BufferPtr += DigestSize;
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}
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return EFI_SUCCESS;
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}
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/**
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This command adds the last part of data, if any, to a hash/HMAC sequence and returns the result.
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@param[in] SequenceHandle Authorization for the sequence
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@param[in] Buffer Data to be added to the hash/HMAC
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@param[out] Result The returned HMAC or digest in a sized buffer
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@retval EFI_SUCCESS Operation completed successfully.
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@retval EFI_DEVICE_ERROR Unexpected device behavior.
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**/
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EFI_STATUS
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EFIAPI
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Tpm2SequenceComplete (
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IN TPMI_DH_OBJECT SequenceHandle,
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IN TPM2B_MAX_BUFFER *Buffer,
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OUT TPM2B_DIGEST *Result
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)
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{
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EFI_STATUS Status;
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TPM2_SEQUENCE_COMPLETE_COMMAND Cmd;
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TPM2_SEQUENCE_COMPLETE_RESPONSE Res;
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UINT32 CmdSize;
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UINT32 RespSize;
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UINT8 *BufferPtr;
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UINT32 SessionInfoSize;
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UINT32 ResultBufSize;
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ZeroMem(&Cmd, sizeof(Cmd));
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//
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// Construct command
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//
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Cmd.Header.tag = SwapBytes16(TPM_ST_SESSIONS);
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Cmd.Header.commandCode = SwapBytes32(TPM_CC_SequenceComplete);
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Cmd.SequenceHandle = SwapBytes32(SequenceHandle);
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//
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// Add in Auth session
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//
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BufferPtr = (UINT8 *)&Cmd.AuthSessionSeq;
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// sessionInfoSize
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SessionInfoSize = CopyAuthSessionCommand (NULL, BufferPtr);
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BufferPtr += SessionInfoSize;
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Cmd.AuthorizationSize = SwapBytes32(SessionInfoSize);
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// buffer.size
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WriteUnaligned16 ((UINT16 *)BufferPtr, SwapBytes16(Buffer->size));
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BufferPtr += sizeof(UINT16);
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CopyMem(BufferPtr, &Buffer->buffer[0], Buffer->size);
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BufferPtr += Buffer->size;
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// Hierarchy
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WriteUnaligned32 ((UINT32 *)BufferPtr, SwapBytes32 (TPM_RH_NULL));
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BufferPtr += sizeof (UINT32);
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CmdSize = (UINT32)(BufferPtr - (UINT8 *)&Cmd);
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Cmd.Header.paramSize = SwapBytes32(CmdSize);
|
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//
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// Call the TPM
|
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//
|
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ResultBufSize = sizeof(Res);
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Status = Tpm2SubmitCommand (CmdSize, (UINT8 *)&Cmd, &ResultBufSize, (UINT8 *)&Res);
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if (EFI_ERROR(Status)) {
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return Status;
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}
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||||
if (ResultBufSize > sizeof(Res)) {
|
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DEBUG ((EFI_D_ERROR, "SequenceComplete: Failed ExecuteCommand: Buffer Too Small\r\n"));
|
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return EFI_BUFFER_TOO_SMALL;
|
||||
}
|
||||
|
||||
//
|
||||
// Validate response headers
|
||||
//
|
||||
RespSize = SwapBytes32(Res.Header.paramSize);
|
||||
if (RespSize > sizeof(Res)) {
|
||||
DEBUG ((EFI_D_ERROR, "SequenceComplete: Response size too large! %d\r\n", RespSize));
|
||||
return EFI_BUFFER_TOO_SMALL;
|
||||
}
|
||||
|
||||
//
|
||||
// Fail if command failed
|
||||
//
|
||||
if (SwapBytes32(Res.Header.responseCode) != TPM_RC_SUCCESS) {
|
||||
DEBUG ((EFI_D_ERROR, "SequenceComplete: Response Code error! 0x%08x\r\n", SwapBytes32(Res.Header.responseCode)));
|
||||
return EFI_DEVICE_ERROR;
|
||||
}
|
||||
|
||||
//
|
||||
// Unmarshal the response
|
||||
//
|
||||
|
||||
BufferPtr = (UINT8 *)&Res.Digest;
|
||||
|
||||
// digestSize
|
||||
Result->size = SwapBytes16(ReadUnaligned16 ((UINT16 *)BufferPtr));
|
||||
BufferPtr += sizeof(UINT16);
|
||||
|
||||
CopyMem(
|
||||
Result->buffer,
|
||||
BufferPtr,
|
||||
Result->size
|
||||
);
|
||||
|
||||
return EFI_SUCCESS;
|
||||
}
|
Reference in New Issue
Block a user