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Add TPM2 commands which might be used in field upgrade. 

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: "Yao, Jiewen" <jiewen.yao@intel.com>
Reviewed-by: "Dong, Guo" <guo.dong@intel.com>
Reviewed-by: "Long, Qin" <qin.long@intel.com>



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16505 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Yao, Jiewen 2014-12-12 04:34:19 +00:00 committed by jyao1
parent 9f2c0260b1
commit 967eaccaaa
6 changed files with 785 additions and 1 deletions
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133
SecurityPkg/Include/Library/Tpm2CommandLib.h
View File

@ -1,7 +1,7 @@
/** @file /** @file
This library is used by other modules to send TPM2 command. This library is used by other modules to send TPM2 command.
Copyright (c) 2013, Intel Corporation. All rights reserved. <BR> Copyright (c) 2013 - 2014, Intel Corporation. All rights reserved. <BR>
This program and the accompanying materials This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at which accompanies this distribution. The full text of the license may be found at
@ -140,6 +140,27 @@ Tpm2SelfTest (
IN TPMI_YES_NO FullTest IN TPMI_YES_NO FullTest
); );
/**
This command allows setting of the authorization policy for the platform hierarchy (platformPolicy), the
storage hierarchy (ownerPolicy), and and the endorsement hierarchy (endorsementPolicy).
@param[in] AuthHandle TPM_RH_ENDORSEMENT, TPM_RH_OWNER or TPM_RH_PLATFORM+{PP} parameters to be validated
@param[in] AuthSession Auth Session context
@param[in] AuthPolicy An authorization policy hash
@param[in] HashAlg The hash algorithm to use for the policy
@retval EFI_SUCCESS Operation completed successfully.
@retval EFI_DEVICE_ERROR Unexpected device behavior.
**/
EFI_STATUS
EFIAPI
Tpm2SetPrimaryPolicy (
IN TPMI_RH_HIERARCHY_AUTH AuthHandle,
IN TPMS_AUTH_COMMAND *AuthSession,
IN TPM2B_DIGEST *AuthPolicy,
IN TPMI_ALG_HASH HashAlg
);
/** /**
This command removes all TPM context associated with a specific Owner. This command removes all TPM context associated with a specific Owner.
@ -774,6 +795,116 @@ Tpm2SetAlgorithmSet (
IN UINT32 AlgorithmSet IN UINT32 AlgorithmSet
); );
/**
This command is used to start an authorization session using alternative methods of
establishing the session key (sessionKey) that is used for authorization and encrypting value.
@param[in] TpmKey Handle of a loaded decrypt key used to encrypt salt.
@param[in] Bind Entity providing the authValue.
@param[in] NonceCaller Initial nonceCaller, sets nonce size for the session.
@param[in] Salt Value encrypted according to the type of tpmKey.
@param[in] SessionType Indicates the type of the session.
@param[in] Symmetric The algorithm and key size for parameter encryption.
@param[in] AuthHash Hash algorithm to use for the session.
@param[out] SessionHandle Handle for the newly created session.
@param[out] NonceTPM The initial nonce from the TPM, used in the computation of the sessionKey.
@retval EFI_SUCCESS Operation completed successfully.
@retval EFI_DEVICE_ERROR The command was unsuccessful.
**/
EFI_STATUS
EFIAPI
Tpm2StartAuthSession (
IN TPMI_DH_OBJECT TpmKey,
IN TPMI_DH_ENTITY Bind,
IN TPM2B_NONCE *NonceCaller,
IN TPM2B_ENCRYPTED_SECRET *Salt,
IN TPM_SE SessionType,
IN TPMT_SYM_DEF *Symmetric,
IN TPMI_ALG_HASH AuthHash,
OUT TPMI_SH_AUTH_SESSION *SessionHandle,
OUT TPM2B_NONCE *NonceTPM
);
/**
This command causes all context associated with a loaded object or session to be removed from TPM memory.
@param[in] FlushHandle The handle of the item to flush.
@retval EFI_SUCCESS Operation completed successfully.
@retval EFI_DEVICE_ERROR The command was unsuccessful.
**/
EFI_STATUS
EFIAPI
Tpm2FlushContext (
IN TPMI_DH_CONTEXT FlushHandle
);
/**
This command includes a secret-based authorization to a policy.
The caller proves knowledge of the secret value using an authorization
session using the authValue associated with authHandle.
@param[in] AuthHandle Handle for an entity providing the authorization
@param[in] PolicySession Handle for the policy session being extended.
@param[in] AuthSession Auth Session context
@param[in] NonceTPM The policy nonce for the session.
@param[in] CpHashA Digest of the command parameters to which this authorization is limited.
@param[in] PolicyRef A reference to a policy relating to the authorization.
@param[in] Expiration Time when authorization will expire, measured in seconds from the time that nonceTPM was generated.
@param[out] Timeout Time value used to indicate to the TPM when the ticket expires.
@param[out] PolicyTicket A ticket that includes a value indicating when the authorization expires.
@retval EFI_SUCCESS Operation completed successfully.
@retval EFI_DEVICE_ERROR The command was unsuccessful.
**/
EFI_STATUS
EFIAPI
Tpm2PolicySecret (
IN TPMI_DH_ENTITY AuthHandle,
IN TPMI_SH_POLICY PolicySession,
IN TPMS_AUTH_COMMAND *AuthSession, OPTIONAL
IN TPM2B_NONCE *NonceTPM,
IN TPM2B_DIGEST *CpHashA,
IN TPM2B_NONCE *PolicyRef,
IN INT32 Expiration,
OUT TPM2B_TIMEOUT *Timeout,
OUT TPMT_TK_AUTH *PolicyTicket
);
/**
This command indicates that the authorization will be limited to a specific command code.
@param[in] PolicySession Handle for the policy session being extended.
@param[in] Code The allowed commandCode.
@retval EFI_SUCCESS Operation completed successfully.
@retval EFI_DEVICE_ERROR The command was unsuccessful.
**/
EFI_STATUS
EFIAPI
Tpm2PolicyCommandCode (
IN TPMI_SH_POLICY PolicySession,
IN TPM_CC Code
);
/**
This command returns the current policyDigest of the session. This command allows the TPM
to be used to perform the actions required to precompute the authPolicy for an object.
@param[in] PolicySession Handle for the policy session.
@param[out] PolicyHash the current value of the policyHash of policySession.
@retval EFI_SUCCESS Operation completed successfully.
@retval EFI_DEVICE_ERROR The command was unsuccessful.
**/
EFI_STATUS
EFIAPI
Tpm2PolicyGetDigest (
IN TPMI_SH_POLICY PolicySession,
OUT TPM2B_DIGEST *PolicyHash
);
// //
// Help function // Help function
// //

3
SecurityPkg/Library/Tpm2CommandLib/Tpm2CommandLib.inf
View File

@ -35,6 +35,9 @@
Tpm2Hierarchy.c Tpm2Hierarchy.c
Tpm2NVStorage.c Tpm2NVStorage.c
Tpm2Startup.c Tpm2Startup.c
Tpm2Session.c
Tpm2Context.c
Tpm2EnhancedAuthorization.c
Tpm2Test.c Tpm2Test.c
Tpm2DictionaryAttack.c Tpm2DictionaryAttack.c
Tpm2Miscellaneous.c Tpm2Miscellaneous.c

86
SecurityPkg/Library/Tpm2CommandLib/Tpm2Context.c Normal file
View File

@ -0,0 +1,86 @@
/** @file
Implement TPM2 Context related command.
Copyright (c) 2014, Intel Corporation. All rights reserved. <BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include <IndustryStandard/UefiTcgPlatform.h>
#include <Library/Tpm2CommandLib.h>
#include <Library/Tpm2DeviceLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
#pragma pack(1)
typedef struct {
TPM2_COMMAND_HEADER Header;
TPMI_DH_CONTEXT FlushHandle;
} TPM2_FLUSH_CONTEXT_COMMAND;
typedef struct {
TPM2_RESPONSE_HEADER Header;
} TPM2_FLUSH_CONTEXT_RESPONSE;
#pragma pack()
/**
This command causes all context associated with a loaded object or session to be removed from TPM memory.
@param[in] FlushHandle The handle of the item to flush.
@retval EFI_SUCCESS Operation completed successfully.
@retval EFI_DEVICE_ERROR The command was unsuccessful.
**/
EFI_STATUS
EFIAPI
Tpm2FlushContext (
IN TPMI_DH_CONTEXT FlushHandle
)
{
EFI_STATUS Status;
TPM2_FLUSH_CONTEXT_COMMAND SendBuffer;
TPM2_FLUSH_CONTEXT_RESPONSE RecvBuffer;
UINT32 SendBufferSize;
UINT32 RecvBufferSize;
//
// Construct command
//
SendBuffer.Header.tag = SwapBytes16(TPM_ST_NO_SESSIONS);
SendBuffer.Header.commandCode = SwapBytes32(TPM_CC_FlushContext);
SendBuffer.FlushHandle = SwapBytes32 (FlushHandle);
SendBufferSize = (UINT32) sizeof (SendBuffer);
SendBuffer.Header.paramSize = SwapBytes32 (SendBufferSize);
//
// send Tpm command
//
RecvBufferSize = sizeof (RecvBuffer);
Status = Tpm2SubmitCommand (SendBufferSize, (UINT8 *)&SendBuffer, &RecvBufferSize, (UINT8 *)&RecvBuffer);
if (EFI_ERROR (Status)) {
return Status;
}
if (RecvBufferSize < sizeof (TPM2_RESPONSE_HEADER)) {
DEBUG ((EFI_D_ERROR, "Tpm2FlushContext - RecvBufferSize Error - %x\n", RecvBufferSize));
return EFI_DEVICE_ERROR;
}
if (SwapBytes32(RecvBuffer.Header.responseCode) != TPM_RC_SUCCESS) {
DEBUG ((EFI_D_ERROR, "Tpm2FlushContext - responseCode - %x\n", SwapBytes32(RecvBuffer.Header.responseCode)));
return EFI_DEVICE_ERROR;
}
return EFI_SUCCESS;
}

299
SecurityPkg/Library/Tpm2CommandLib/Tpm2EnhancedAuthorization.c Normal file
View File

@ -0,0 +1,299 @@
/** @file
Implement TPM2 EnhancedAuthorization related command.
Copyright (c) 2014, Intel Corporation. All rights reserved. <BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include <IndustryStandard/UefiTcgPlatform.h>
#include <Library/Tpm2CommandLib.h>
#include <Library/Tpm2DeviceLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
#pragma pack(1)
typedef struct {
TPM2_COMMAND_HEADER Header;
TPMI_DH_ENTITY AuthHandle;
TPMI_SH_POLICY PolicySession;
UINT32 AuthSessionSize;
TPMS_AUTH_COMMAND AuthSession;
TPM2B_NONCE NonceTPM;
TPM2B_DIGEST CpHashA;
TPM2B_NONCE PolicyRef;
INT32 Expiration;
} TPM2_POLICY_SECRET_COMMAND;
typedef struct {
TPM2_RESPONSE_HEADER Header;
UINT32 AuthSessionSize;
TPM2B_TIMEOUT Timeout;
TPMT_TK_AUTH PolicyTicket;
TPMS_AUTH_RESPONSE AuthSession;
} TPM2_POLICY_SECRET_RESPONSE;
typedef struct {
TPM2_COMMAND_HEADER Header;
TPMI_SH_POLICY PolicySession;
TPM_CC Code;
} TPM2_POLICY_COMMAND_CODE_COMMAND;
typedef struct {
TPM2_RESPONSE_HEADER Header;
} TPM2_POLICY_COMMAND_CODE_RESPONSE;
typedef struct {
TPM2_COMMAND_HEADER Header;
TPMI_SH_POLICY PolicySession;
} TPM2_POLICY_GET_DIGEST_COMMAND;
typedef struct {
TPM2_RESPONSE_HEADER Header;
TPM2B_DIGEST PolicyHash;
} TPM2_POLICY_GET_DIGEST_RESPONSE;
#pragma pack()
/**
This command includes a secret-based authorization to a policy.
The caller proves knowledge of the secret value using an authorization
session using the authValue associated with authHandle.
@param[in] AuthHandle Handle for an entity providing the authorization
@param[in] PolicySession Handle for the policy session being extended.
@param[in] AuthSession Auth Session context
@param[in] NonceTPM The policy nonce for the session.
@param[in] CpHashA Digest of the command parameters to which this authorization is limited.
@param[in] PolicyRef A reference to a policy relating to the authorization.
@param[in] Expiration Time when authorization will expire, measured in seconds from the time that nonceTPM was generated.
@param[out] Timeout Time value used to indicate to the TPM when the ticket expires.
@param[out] PolicyTicket A ticket that includes a value indicating when the authorization expires.
@retval EFI_SUCCESS Operation completed successfully.
@retval EFI_DEVICE_ERROR The command was unsuccessful.
**/
EFI_STATUS
EFIAPI
Tpm2PolicySecret (
IN TPMI_DH_ENTITY AuthHandle,
IN TPMI_SH_POLICY PolicySession,
IN TPMS_AUTH_COMMAND *AuthSession, OPTIONAL
IN TPM2B_NONCE *NonceTPM,
IN TPM2B_DIGEST *CpHashA,
IN TPM2B_NONCE *PolicyRef,
IN INT32 Expiration,
OUT TPM2B_TIMEOUT *Timeout,
OUT TPMT_TK_AUTH *PolicyTicket
)
{
EFI_STATUS Status;
TPM2_POLICY_SECRET_COMMAND SendBuffer;
TPM2_POLICY_SECRET_RESPONSE RecvBuffer;
UINT32 SendBufferSize;
UINT32 RecvBufferSize;
UINT8 *Buffer;
UINT32 SessionInfoSize;
//
// Construct command
//
SendBuffer.Header.tag = SwapBytes16(TPM_ST_SESSIONS);
SendBuffer.Header.commandCode = SwapBytes32(TPM_CC_PolicySecret);
SendBuffer.AuthHandle = SwapBytes32 (AuthHandle);
SendBuffer.PolicySession = SwapBytes32 (PolicySession);
//
// Add in Auth session
//
Buffer = (UINT8 *)&SendBuffer.AuthSession;
// sessionInfoSize
SessionInfoSize = CopyAuthSessionCommand (AuthSession, Buffer);
Buffer += SessionInfoSize;
SendBuffer.AuthSessionSize = SwapBytes32(SessionInfoSize);
//
// Real data
//
WriteUnaligned16 ((UINT16 *)Buffer, SwapBytes16(NonceTPM->size));
Buffer += sizeof(UINT16);
CopyMem (Buffer, NonceTPM->buffer, NonceTPM->size);
Buffer += NonceTPM->size;
WriteUnaligned16 ((UINT16 *)Buffer, SwapBytes16(CpHashA->size));
Buffer += sizeof(UINT16);
CopyMem (Buffer, CpHashA->buffer, CpHashA->size);
Buffer += CpHashA->size;
WriteUnaligned16 ((UINT16 *)Buffer, SwapBytes16(PolicyRef->size));
Buffer += sizeof(UINT16);
CopyMem (Buffer, PolicyRef->buffer, PolicyRef->size);
Buffer += PolicyRef->size;
WriteUnaligned32 ((UINT32 *)Buffer, SwapBytes32((UINT32)Expiration));
Buffer += sizeof(UINT32);
SendBufferSize = (UINT32)((UINTN)Buffer - (UINTN)&SendBuffer);
SendBuffer.Header.paramSize = SwapBytes32 (SendBufferSize);
//
// send Tpm command
//
RecvBufferSize = sizeof (RecvBuffer);
Status = Tpm2SubmitCommand (SendBufferSize, (UINT8 *)&SendBuffer, &RecvBufferSize, (UINT8 *)&RecvBuffer);
if (EFI_ERROR (Status)) {
return Status;
}
if (RecvBufferSize < sizeof (TPM2_RESPONSE_HEADER)) {
DEBUG ((EFI_D_ERROR, "Tpm2PolicySecret - RecvBufferSize Error - %x\n", RecvBufferSize));
return EFI_DEVICE_ERROR;
}
if (SwapBytes32(RecvBuffer.Header.responseCode) != TPM_RC_SUCCESS) {
DEBUG ((EFI_D_ERROR, "Tpm2PolicySecret - responseCode - %x\n", SwapBytes32(RecvBuffer.Header.responseCode)));
return EFI_DEVICE_ERROR;
}
//
// Return the response
//
Buffer = (UINT8 *)&RecvBuffer.Timeout;
Timeout->size = SwapBytes16(ReadUnaligned16 ((UINT16 *)Buffer));
Buffer += sizeof(UINT16);
CopyMem (Timeout->buffer, Buffer, Timeout->size);
PolicyTicket->tag = SwapBytes16(ReadUnaligned16 ((UINT16 *)Buffer));
Buffer += sizeof(UINT16);
PolicyTicket->hierarchy = SwapBytes32(ReadUnaligned32 ((UINT32 *)Buffer));
Buffer += sizeof(UINT32);
PolicyTicket->digest.size = SwapBytes16(ReadUnaligned16 ((UINT16 *)Buffer));
Buffer += sizeof(UINT16);
CopyMem (PolicyTicket->digest.buffer, Buffer, PolicyTicket->digest.size);
return EFI_SUCCESS;
}
/**
This command indicates that the authorization will be limited to a specific command code.
@param[in] PolicySession Handle for the policy session being extended.
@param[in] Code The allowed commandCode.
@retval EFI_SUCCESS Operation completed successfully.
@retval EFI_DEVICE_ERROR The command was unsuccessful.
**/
EFI_STATUS
EFIAPI
Tpm2PolicyCommandCode (
IN TPMI_SH_POLICY PolicySession,
IN TPM_CC Code
)
{
EFI_STATUS Status;
TPM2_POLICY_COMMAND_CODE_COMMAND SendBuffer;
TPM2_POLICY_COMMAND_CODE_RESPONSE RecvBuffer;
UINT32 SendBufferSize;
UINT32 RecvBufferSize;
//
// Construct command
//
SendBuffer.Header.tag = SwapBytes16(TPM_ST_NO_SESSIONS);
SendBuffer.Header.commandCode = SwapBytes32(TPM_CC_PolicyCommandCode);
SendBuffer.PolicySession = SwapBytes32 (PolicySession);
SendBuffer.Code = SwapBytes32 (Code);
SendBufferSize = (UINT32) sizeof (SendBuffer);
SendBuffer.Header.paramSize = SwapBytes32 (SendBufferSize);
//
// send Tpm command
//
RecvBufferSize = sizeof (RecvBuffer);
Status = Tpm2SubmitCommand (SendBufferSize, (UINT8 *)&SendBuffer, &RecvBufferSize, (UINT8 *)&RecvBuffer);
if (EFI_ERROR (Status)) {
return Status;
}
if (RecvBufferSize < sizeof (TPM2_RESPONSE_HEADER)) {
DEBUG ((EFI_D_ERROR, "Tpm2PolicyCommandCode - RecvBufferSize Error - %x\n", RecvBufferSize));
return EFI_DEVICE_ERROR;
}
if (SwapBytes32(RecvBuffer.Header.responseCode) != TPM_RC_SUCCESS) {
DEBUG ((EFI_D_ERROR, "Tpm2PolicyCommandCode - responseCode - %x\n", SwapBytes32(RecvBuffer.Header.responseCode)));
return EFI_DEVICE_ERROR;
}
return EFI_SUCCESS;
}
/**
This command returns the current policyDigest of the session. This command allows the TPM
to be used to perform the actions required to precompute the authPolicy for an object.
@param[in] PolicySession Handle for the policy session.
@param[out] PolicyHash the current value of the policyHash of policySession.
@retval EFI_SUCCESS Operation completed successfully.
@retval EFI_DEVICE_ERROR The command was unsuccessful.
**/
EFI_STATUS
EFIAPI
Tpm2PolicyGetDigest (
IN TPMI_SH_POLICY PolicySession,
OUT TPM2B_DIGEST *PolicyHash
)
{
EFI_STATUS Status;
TPM2_POLICY_GET_DIGEST_COMMAND SendBuffer;
TPM2_POLICY_GET_DIGEST_RESPONSE RecvBuffer;
UINT32 SendBufferSize;
UINT32 RecvBufferSize;
//
// Construct command
//
SendBuffer.Header.tag = SwapBytes16(TPM_ST_NO_SESSIONS);
SendBuffer.Header.commandCode = SwapBytes32(TPM_CC_PolicyGetDigest);
SendBuffer.PolicySession = SwapBytes32 (PolicySession);
SendBufferSize = (UINT32) sizeof (SendBuffer);
SendBuffer.Header.paramSize = SwapBytes32 (SendBufferSize);
//
// send Tpm command
//
RecvBufferSize = sizeof (RecvBuffer);
Status = Tpm2SubmitCommand (SendBufferSize, (UINT8 *)&SendBuffer, &RecvBufferSize, (UINT8 *)&RecvBuffer);
if (EFI_ERROR (Status)) {
return Status;
}
if (RecvBufferSize < sizeof (TPM2_RESPONSE_HEADER)) {
DEBUG ((EFI_D_ERROR, "Tpm2PolicyGetDigest - RecvBufferSize Error - %x\n", RecvBufferSize));
return EFI_DEVICE_ERROR;
}
if (SwapBytes32(RecvBuffer.Header.responseCode) != TPM_RC_SUCCESS) {
DEBUG ((EFI_D_ERROR, "Tpm2PolicyGetDigest - responseCode - %x\n", SwapBytes32(RecvBuffer.Header.responseCode)));
return EFI_DEVICE_ERROR;
}
//
// Return the response
//
PolicyHash->size = SwapBytes16 (RecvBuffer.PolicyHash.size);
CopyMem (PolicyHash->buffer, &RecvBuffer.PolicyHash.buffer, PolicyHash->size);
return EFI_SUCCESS;
}

96
SecurityPkg/Library/Tpm2CommandLib/Tpm2Hierarchy.c
View File

@ -21,6 +21,21 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
#pragma pack(1) #pragma pack(1)
typedef struct {
TPM2_COMMAND_HEADER Header;
TPMI_RH_HIERARCHY AuthHandle;
UINT32 AuthSessionSize;
TPMS_AUTH_COMMAND AuthSession;
TPM2B_DIGEST AuthPolicy;
TPMI_ALG_HASH HashAlg;
} TPM2_SET_PRIMARY_POLICY_COMMAND;
typedef struct {
TPM2_RESPONSE_HEADER Header;
UINT32 AuthSessionSize;
TPMS_AUTH_RESPONSE AuthSession;
} TPM2_SET_PRIMARY_POLICY_RESPONSE;
typedef struct { typedef struct {
TPM2_COMMAND_HEADER Header; TPM2_COMMAND_HEADER Header;
TPMI_RH_CLEAR AuthHandle; TPMI_RH_CLEAR AuthHandle;
@ -105,6 +120,87 @@ typedef struct {
#pragma pack() #pragma pack()
/**
This command allows setting of the authorization policy for the platform hierarchy (platformPolicy), the
storage hierarchy (ownerPolicy), and and the endorsement hierarchy (endorsementPolicy).
@param[in] AuthHandle TPM_RH_ENDORSEMENT, TPM_RH_OWNER or TPM_RH_PLATFORM+{PP} parameters to be validated
@param[in] AuthSession Auth Session context
@param[in] AuthPolicy An authorization policy hash
@param[in] HashAlg The hash algorithm to use for the policy
@retval EFI_SUCCESS Operation completed successfully.
@retval EFI_DEVICE_ERROR Unexpected device behavior.
**/
EFI_STATUS
EFIAPI
Tpm2SetPrimaryPolicy (
IN TPMI_RH_HIERARCHY_AUTH AuthHandle,
IN TPMS_AUTH_COMMAND *AuthSession,
IN TPM2B_DIGEST *AuthPolicy,
IN TPMI_ALG_HASH HashAlg
)
{
EFI_STATUS Status;
TPM2_SET_PRIMARY_POLICY_COMMAND SendBuffer;
TPM2_SET_PRIMARY_POLICY_RESPONSE RecvBuffer;
UINT32 SendBufferSize;
UINT32 RecvBufferSize;
UINT8 *Buffer;
UINT32 SessionInfoSize;
//
// Construct command
//
SendBuffer.Header.tag = SwapBytes16(TPM_ST_SESSIONS);
SendBuffer.Header.commandCode = SwapBytes32(TPM_CC_SetPrimaryPolicy);
SendBuffer.AuthHandle = SwapBytes32 (AuthHandle);
//
// Add in Auth session
//
Buffer = (UINT8 *)&SendBuffer.AuthSession;
// sessionInfoSize
SessionInfoSize = CopyAuthSessionCommand (AuthSession, Buffer);
Buffer += SessionInfoSize;
SendBuffer.AuthSessionSize = SwapBytes32(SessionInfoSize);
//
// Real data
//
WriteUnaligned16 ((UINT16 *)Buffer, SwapBytes16(AuthPolicy->size));
Buffer += sizeof(UINT16);
CopyMem (Buffer, AuthPolicy->buffer, AuthPolicy->size);
Buffer += AuthPolicy->size;
WriteUnaligned16 ((UINT16 *)Buffer, SwapBytes16(HashAlg));
Buffer += sizeof(UINT16);
SendBufferSize = (UINT32)((UINTN)Buffer - (UINTN)&SendBuffer);
SendBuffer.Header.paramSize = SwapBytes32 (SendBufferSize);
//
// send Tpm command
//
RecvBufferSize = sizeof (RecvBuffer);
Status = Tpm2SubmitCommand (SendBufferSize, (UINT8 *)&SendBuffer, &RecvBufferSize, (UINT8 *)&RecvBuffer);
if (EFI_ERROR (Status)) {
return Status;
}
if (RecvBufferSize < sizeof (TPM2_RESPONSE_HEADER)) {
DEBUG ((EFI_D_ERROR, "Tpm2SetPrimaryPolicy - RecvBufferSize Error - %x\n", RecvBufferSize));
return EFI_DEVICE_ERROR;
}
if (SwapBytes32(RecvBuffer.Header.responseCode) != TPM_RC_SUCCESS) {
DEBUG ((EFI_D_ERROR, "Tpm2SetPrimaryPolicy - responseCode - %x\n", SwapBytes32(RecvBuffer.Header.responseCode)));
return EFI_DEVICE_ERROR;
}
return EFI_SUCCESS;
}
/** /**
This command removes all TPM context associated with a specific Owner. This command removes all TPM context associated with a specific Owner.

169
SecurityPkg/Library/Tpm2CommandLib/Tpm2Session.c Normal file
View File

@ -0,0 +1,169 @@
/** @file
Implement TPM2 Session related command.
Copyright (c) 2014, Intel Corporation. All rights reserved. <BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include <IndustryStandard/UefiTcgPlatform.h>
#include <Library/Tpm2CommandLib.h>
#include <Library/Tpm2DeviceLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
#pragma pack(1)
typedef struct {
TPM2_COMMAND_HEADER Header;
TPMI_DH_OBJECT TpmKey;
TPMI_DH_ENTITY Bind;
TPM2B_NONCE NonceCaller;
TPM2B_ENCRYPTED_SECRET Salt;
TPM_SE SessionType;
TPMT_SYM_DEF Symmetric;
TPMI_ALG_HASH AuthHash;
} TPM2_START_AUTH_SESSION_COMMAND;
typedef struct {
TPM2_RESPONSE_HEADER Header;
TPMI_SH_AUTH_SESSION SessionHandle;
TPM2B_NONCE NonceTPM;
} TPM2_START_AUTH_SESSION_RESPONSE;
#pragma pack()
/**
This command is used to start an authorization session using alternative methods of
establishing the session key (sessionKey) that is used for authorization and encrypting value.
@param[in] TpmKey Handle of a loaded decrypt key used to encrypt salt.
@param[in] Bind Entity providing the authValue.
@param[in] NonceCaller Initial nonceCaller, sets nonce size for the session.
@param[in] Salt Value encrypted according to the type of tpmKey.
@param[in] SessionType Indicates the type of the session.
@param[in] Symmetric The algorithm and key size for parameter encryption.
@param[in] AuthHash Hash algorithm to use for the session.
@param[out] SessionHandle Handle for the newly created session.
@param[out] NonceTPM The initial nonce from the TPM, used in the computation of the sessionKey.
@retval EFI_SUCCESS Operation completed successfully.
@retval EFI_DEVICE_ERROR The command was unsuccessful.
**/
EFI_STATUS
EFIAPI
Tpm2StartAuthSession (
IN TPMI_DH_OBJECT TpmKey,
IN TPMI_DH_ENTITY Bind,
IN TPM2B_NONCE *NonceCaller,
IN TPM2B_ENCRYPTED_SECRET *Salt,
IN TPM_SE SessionType,
IN TPMT_SYM_DEF *Symmetric,
IN TPMI_ALG_HASH AuthHash,
OUT TPMI_SH_AUTH_SESSION *SessionHandle,
OUT TPM2B_NONCE *NonceTPM
)
{
EFI_STATUS Status;
TPM2_START_AUTH_SESSION_COMMAND SendBuffer;
TPM2_START_AUTH_SESSION_RESPONSE RecvBuffer;
UINT32 SendBufferSize;
UINT32 RecvBufferSize;
UINT8 *Buffer;
//
// Construct command
//
SendBuffer.Header.tag = SwapBytes16(TPM_ST_NO_SESSIONS);
SendBuffer.Header.commandCode = SwapBytes32(TPM_CC_StartAuthSession);
SendBuffer.TpmKey = SwapBytes32 (TpmKey);
SendBuffer.Bind = SwapBytes32 (Bind);
Buffer = (UINT8 *)&SendBuffer.NonceCaller;
WriteUnaligned16 ((UINT16 *)Buffer, SwapBytes16 (NonceCaller->size));
Buffer += sizeof(UINT16);
CopyMem (Buffer, NonceCaller->buffer, NonceCaller->size);
Buffer += NonceCaller->size;
WriteUnaligned16 ((UINT16 *)Buffer, SwapBytes16 (Salt->size));
Buffer += sizeof(UINT16);
CopyMem (Buffer, Salt->secret, Salt->size);
Buffer += Salt->size;
*(TPM_SE *)Buffer = SessionType;
Buffer += sizeof(UINT8);
WriteUnaligned16 ((UINT16 *)Buffer, SwapBytes16 (Symmetric->algorithm));
Buffer += sizeof(UINT16);
switch (Symmetric->algorithm) {
case TPM_ALG_NULL:
break;
case TPM_ALG_AES:
WriteUnaligned16 ((UINT16 *)Buffer, SwapBytes16 (Symmetric->keyBits.aes));
Buffer += sizeof(UINT16);
WriteUnaligned16 ((UINT16 *)Buffer, SwapBytes16 (Symmetric->mode.aes));
Buffer += sizeof(UINT16);
break;
case TPM_ALG_SM4:
WriteUnaligned16 ((UINT16 *)Buffer, SwapBytes16 (Symmetric->keyBits.SM4));
Buffer += sizeof(UINT16);
WriteUnaligned16 ((UINT16 *)Buffer, SwapBytes16 (Symmetric->mode.SM4));
Buffer += sizeof(UINT16);
break;
case TPM_ALG_SYMCIPHER:
WriteUnaligned16 ((UINT16 *)Buffer, SwapBytes16 (Symmetric->keyBits.sym));
Buffer += sizeof(UINT16);
WriteUnaligned16 ((UINT16 *)Buffer, SwapBytes16 (Symmetric->mode.sym));
Buffer += sizeof(UINT16);
break;
case TPM_ALG_XOR:
WriteUnaligned16 ((UINT16 *)Buffer, SwapBytes16 (Symmetric->keyBits.xor));
Buffer += sizeof(UINT16);
break;
default:
ASSERT (FALSE);
DEBUG ((EFI_D_ERROR, "Tpm2StartAuthSession - Symmetric->algorithm - %x\n", Symmetric->algorithm));
return EFI_UNSUPPORTED;
}
WriteUnaligned16 ((UINT16 *)Buffer, SwapBytes16 (AuthHash));
Buffer += sizeof(UINT16);
SendBufferSize = (UINT32) ((UINTN)Buffer - (UINTN)&SendBuffer);
SendBuffer.Header.paramSize = SwapBytes32 (SendBufferSize);
//
// send Tpm command
//
RecvBufferSize = sizeof (RecvBuffer);
Status = Tpm2SubmitCommand (SendBufferSize, (UINT8 *)&SendBuffer, &RecvBufferSize, (UINT8 *)&RecvBuffer);
if (EFI_ERROR (Status)) {
return Status;
}
if (RecvBufferSize < sizeof (TPM2_RESPONSE_HEADER)) {
DEBUG ((EFI_D_ERROR, "Tpm2StartAuthSession - RecvBufferSize Error - %x\n", RecvBufferSize));
return EFI_DEVICE_ERROR;
}
if (SwapBytes32(RecvBuffer.Header.responseCode) != TPM_RC_SUCCESS) {
DEBUG ((EFI_D_ERROR, "Tpm2StartAuthSession - responseCode - %x\n", SwapBytes32(RecvBuffer.Header.responseCode)));
return EFI_DEVICE_ERROR;
}
//
// Return the response
//
*SessionHandle = SwapBytes32 (RecvBuffer.SessionHandle);
NonceTPM->size = SwapBytes16 (RecvBuffer.NonceTPM.size);
CopyMem (NonceTPM->buffer, &RecvBuffer.NonceTPM.buffer, NonceTPM->size);
return EFI_SUCCESS;
}