diff options
Diffstat (limited to 'SecurityPkg/Library/Tpm2CommandLib/Tpm2DictionaryAttack.c')
| -rw-r--r-- | SecurityPkg/Library/Tpm2CommandLib/Tpm2DictionaryAttack.c | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/SecurityPkg/Library/Tpm2CommandLib/Tpm2DictionaryAttack.c b/SecurityPkg/Library/Tpm2CommandLib/Tpm2DictionaryAttack.c new file mode 100644 index 000000000..2f6488fb9 --- /dev/null +++ b/SecurityPkg/Library/Tpm2CommandLib/Tpm2DictionaryAttack.c @@ -0,0 +1,203 @@ +/** @file
+ Implement TPM2 DictionaryAttack related command.
+
+Copyright (c) 2013, 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_RH_LOCKOUT LockHandle;
+ UINT32 AuthSessionSize;
+ TPMS_AUTH_COMMAND AuthSession;
+} TPM2_DICTIONARY_ATTACK_LOCK_RESET_COMMAND;
+
+typedef struct {
+ TPM2_RESPONSE_HEADER Header;
+ UINT32 AuthSessionSize;
+ TPMS_AUTH_RESPONSE AuthSession;
+} TPM2_DICTIONARY_ATTACK_LOCK_RESET_RESPONSE;
+
+typedef struct {
+ TPM2_COMMAND_HEADER Header;
+ TPMI_RH_LOCKOUT LockHandle;
+ UINT32 AuthSessionSize;
+ TPMS_AUTH_COMMAND AuthSession;
+ UINT32 NewMaxTries;
+ UINT32 NewRecoveryTime;
+ UINT32 LockoutRecovery;
+} TPM2_DICTIONARY_ATTACK_PARAMETERS_COMMAND;
+
+typedef struct {
+ TPM2_RESPONSE_HEADER Header;
+ UINT32 AuthSessionSize;
+ TPMS_AUTH_RESPONSE AuthSession;
+} TPM2_DICTIONARY_ATTACK_PARAMETERS_RESPONSE;
+
+#pragma pack()
+
+/**
+ This command cancels the effect of a TPM lockout due to a number of successive authorization failures.
+ If this command is properly authorized, the lockout counter is set to zero.
+
+ @param[in] LockHandle TPM_RH_LOCKOUT
+ @param[in] AuthSession Auth Session context
+
+ @retval EFI_SUCCESS Operation completed successfully.
+ @retval EFI_DEVICE_ERROR Unexpected device behavior.
+**/
+EFI_STATUS
+EFIAPI
+Tpm2DictionaryAttackLockReset (
+ IN TPMI_RH_LOCKOUT LockHandle,
+ IN TPMS_AUTH_COMMAND *AuthSession
+ )
+{
+ EFI_STATUS Status;
+ TPM2_DICTIONARY_ATTACK_LOCK_RESET_COMMAND SendBuffer;
+ TPM2_DICTIONARY_ATTACK_LOCK_RESET_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_DictionaryAttackLockReset);
+
+ SendBuffer.LockHandle = SwapBytes32 (LockHandle);
+
+ //
+ // Add in Auth session
+ //
+ Buffer = (UINT8 *)&SendBuffer.AuthSession;
+
+ // sessionInfoSize
+ SessionInfoSize = CopyAuthSessionCommand (AuthSession, Buffer);
+ Buffer += SessionInfoSize;
+ SendBuffer.AuthSessionSize = SwapBytes32(SessionInfoSize);
+
+ 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, "Tpm2DictionaryAttackLockReset - RecvBufferSize Error - %x\n", RecvBufferSize));
+ return EFI_DEVICE_ERROR;
+ }
+ if (SwapBytes32(RecvBuffer.Header.responseCode) != TPM_RC_SUCCESS) {
+ DEBUG ((EFI_D_ERROR, "Tpm2DictionaryAttackLockReset - responseCode - %x\n", SwapBytes32(RecvBuffer.Header.responseCode)));
+ return EFI_DEVICE_ERROR;
+ }
+
+ return EFI_SUCCESS;
+}
+
+/**
+ This command cancels the effect of a TPM lockout due to a number of successive authorization failures.
+ If this command is properly authorized, the lockout counter is set to zero.
+
+ @param[in] LockHandle TPM_RH_LOCKOUT
+ @param[in] AuthSession Auth Session context
+ @param[in] NewMaxTries Count of authorization failures before the lockout is imposed
+ @param[in] NewRecoveryTime Time in seconds before the authorization failure count is automatically decremented
+ @param[in] LockoutRecovery Time in seconds after a lockoutAuth failure before use of lockoutAuth is allowed
+
+ @retval EFI_SUCCESS Operation completed successfully.
+ @retval EFI_DEVICE_ERROR Unexpected device behavior.
+**/
+EFI_STATUS
+EFIAPI
+Tpm2DictionaryAttackParameters (
+ IN TPMI_RH_LOCKOUT LockHandle,
+ IN TPMS_AUTH_COMMAND *AuthSession,
+ IN UINT32 NewMaxTries,
+ IN UINT32 NewRecoveryTime,
+ IN UINT32 LockoutRecovery
+ )
+{
+ EFI_STATUS Status;
+ TPM2_DICTIONARY_ATTACK_PARAMETERS_COMMAND SendBuffer;
+ TPM2_DICTIONARY_ATTACK_PARAMETERS_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_DictionaryAttackParameters);
+
+ SendBuffer.LockHandle = SwapBytes32 (LockHandle);
+
+ //
+ // Add in Auth session
+ //
+ Buffer = (UINT8 *)&SendBuffer.AuthSession;
+
+ // sessionInfoSize
+ SessionInfoSize = CopyAuthSessionCommand (AuthSession, Buffer);
+ Buffer += SessionInfoSize;
+ SendBuffer.AuthSessionSize = SwapBytes32(SessionInfoSize);
+
+ //
+ // Real data
+ //
+ WriteUnaligned32 ((UINT32 *)Buffer, SwapBytes32(NewMaxTries));
+ Buffer += sizeof(UINT32);
+ WriteUnaligned32 ((UINT32 *)Buffer, SwapBytes32(NewRecoveryTime));
+ Buffer += sizeof(UINT32);
+ WriteUnaligned32 ((UINT32 *)Buffer, SwapBytes32(LockoutRecovery));
+ 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, "Tpm2DictionaryAttackParameters - RecvBufferSize Error - %x\n", RecvBufferSize));
+ return EFI_DEVICE_ERROR;
+ }
+ if (SwapBytes32(RecvBuffer.Header.responseCode) != TPM_RC_SUCCESS) {
+ DEBUG ((EFI_D_ERROR, "Tpm2DictionaryAttackParameters - responseCode - %x\n", SwapBytes32(RecvBuffer.Header.responseCode)));
+ return EFI_DEVICE_ERROR;
+ }
+
+ return EFI_SUCCESS;
+}
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