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
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169
SecurityPkg/Library/Tpm2CommandLib/Tpm2Session.c
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169
SecurityPkg/Library/Tpm2CommandLib/Tpm2Session.c
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/** @file
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Implement TPM2 Session related command.
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Copyright (c) 2014, 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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TPMI_DH_OBJECT TpmKey;
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TPMI_DH_ENTITY Bind;
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TPM2B_NONCE NonceCaller;
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TPM2B_ENCRYPTED_SECRET Salt;
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TPM_SE SessionType;
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TPMT_SYM_DEF Symmetric;
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TPMI_ALG_HASH AuthHash;
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} TPM2_START_AUTH_SESSION_COMMAND;
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typedef struct {
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TPM2_RESPONSE_HEADER Header;
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TPMI_SH_AUTH_SESSION SessionHandle;
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TPM2B_NONCE NonceTPM;
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} TPM2_START_AUTH_SESSION_RESPONSE;
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#pragma pack()
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/**
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This command is used to start an authorization session using alternative methods of
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establishing the session key (sessionKey) that is used for authorization and encrypting value.
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@param[in] TpmKey Handle of a loaded decrypt key used to encrypt salt.
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@param[in] Bind Entity providing the authValue.
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@param[in] NonceCaller Initial nonceCaller, sets nonce size for the session.
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@param[in] Salt Value encrypted according to the type of tpmKey.
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@param[in] SessionType Indicates the type of the session.
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@param[in] Symmetric The algorithm and key size for parameter encryption.
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@param[in] AuthHash Hash algorithm to use for the session.
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@param[out] SessionHandle Handle for the newly created session.
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@param[out] NonceTPM The initial nonce from the TPM, used in the computation of the sessionKey.
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@retval EFI_SUCCESS Operation completed successfully.
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@retval EFI_DEVICE_ERROR The command was unsuccessful.
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**/
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EFI_STATUS
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EFIAPI
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Tpm2StartAuthSession (
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IN TPMI_DH_OBJECT TpmKey,
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IN TPMI_DH_ENTITY Bind,
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IN TPM2B_NONCE *NonceCaller,
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IN TPM2B_ENCRYPTED_SECRET *Salt,
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IN TPM_SE SessionType,
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IN TPMT_SYM_DEF *Symmetric,
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IN TPMI_ALG_HASH AuthHash,
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OUT TPMI_SH_AUTH_SESSION *SessionHandle,
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OUT TPM2B_NONCE *NonceTPM
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)
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{
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EFI_STATUS Status;
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TPM2_START_AUTH_SESSION_COMMAND SendBuffer;
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TPM2_START_AUTH_SESSION_RESPONSE RecvBuffer;
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UINT32 SendBufferSize;
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UINT32 RecvBufferSize;
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UINT8 *Buffer;
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//
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// Construct command
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//
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SendBuffer.Header.tag = SwapBytes16(TPM_ST_NO_SESSIONS);
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SendBuffer.Header.commandCode = SwapBytes32(TPM_CC_StartAuthSession);
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SendBuffer.TpmKey = SwapBytes32 (TpmKey);
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SendBuffer.Bind = SwapBytes32 (Bind);
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Buffer = (UINT8 *)&SendBuffer.NonceCaller;
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WriteUnaligned16 ((UINT16 *)Buffer, SwapBytes16 (NonceCaller->size));
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Buffer += sizeof(UINT16);
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CopyMem (Buffer, NonceCaller->buffer, NonceCaller->size);
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Buffer += NonceCaller->size;
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WriteUnaligned16 ((UINT16 *)Buffer, SwapBytes16 (Salt->size));
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Buffer += sizeof(UINT16);
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CopyMem (Buffer, Salt->secret, Salt->size);
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Buffer += Salt->size;
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*(TPM_SE *)Buffer = SessionType;
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Buffer += sizeof(UINT8);
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WriteUnaligned16 ((UINT16 *)Buffer, SwapBytes16 (Symmetric->algorithm));
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Buffer += sizeof(UINT16);
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switch (Symmetric->algorithm) {
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case TPM_ALG_NULL:
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break;
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case TPM_ALG_AES:
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WriteUnaligned16 ((UINT16 *)Buffer, SwapBytes16 (Symmetric->keyBits.aes));
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Buffer += sizeof(UINT16);
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WriteUnaligned16 ((UINT16 *)Buffer, SwapBytes16 (Symmetric->mode.aes));
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Buffer += sizeof(UINT16);
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break;
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case TPM_ALG_SM4:
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WriteUnaligned16 ((UINT16 *)Buffer, SwapBytes16 (Symmetric->keyBits.SM4));
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Buffer += sizeof(UINT16);
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WriteUnaligned16 ((UINT16 *)Buffer, SwapBytes16 (Symmetric->mode.SM4));
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Buffer += sizeof(UINT16);
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break;
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case TPM_ALG_SYMCIPHER:
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WriteUnaligned16 ((UINT16 *)Buffer, SwapBytes16 (Symmetric->keyBits.sym));
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Buffer += sizeof(UINT16);
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WriteUnaligned16 ((UINT16 *)Buffer, SwapBytes16 (Symmetric->mode.sym));
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Buffer += sizeof(UINT16);
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break;
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case TPM_ALG_XOR:
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WriteUnaligned16 ((UINT16 *)Buffer, SwapBytes16 (Symmetric->keyBits.xor));
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Buffer += sizeof(UINT16);
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break;
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default:
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ASSERT (FALSE);
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DEBUG ((EFI_D_ERROR, "Tpm2StartAuthSession - Symmetric->algorithm - %x\n", Symmetric->algorithm));
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return EFI_UNSUPPORTED;
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}
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WriteUnaligned16 ((UINT16 *)Buffer, SwapBytes16 (AuthHash));
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Buffer += sizeof(UINT16);
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SendBufferSize = (UINT32) ((UINTN)Buffer - (UINTN)&SendBuffer);
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SendBuffer.Header.paramSize = SwapBytes32 (SendBufferSize);
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//
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// send Tpm command
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//
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RecvBufferSize = sizeof (RecvBuffer);
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Status = Tpm2SubmitCommand (SendBufferSize, (UINT8 *)&SendBuffer, &RecvBufferSize, (UINT8 *)&RecvBuffer);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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if (RecvBufferSize < sizeof (TPM2_RESPONSE_HEADER)) {
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DEBUG ((EFI_D_ERROR, "Tpm2StartAuthSession - RecvBufferSize Error - %x\n", RecvBufferSize));
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return EFI_DEVICE_ERROR;
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}
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if (SwapBytes32(RecvBuffer.Header.responseCode) != TPM_RC_SUCCESS) {
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DEBUG ((EFI_D_ERROR, "Tpm2StartAuthSession - responseCode - %x\n", SwapBytes32(RecvBuffer.Header.responseCode)));
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return EFI_DEVICE_ERROR;
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}
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//
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// Return the response
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//
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*SessionHandle = SwapBytes32 (RecvBuffer.SessionHandle);
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NonceTPM->size = SwapBytes16 (RecvBuffer.NonceTPM.size);
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CopyMem (NonceTPM->buffer, &RecvBuffer.NonceTPM.buffer, NonceTPM->size);
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return EFI_SUCCESS;
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}
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