Tpm2DictionaryAttack.c File Reference

#include <IndustryStandard/UefiTcgPlatform.h>
#include <Library/Tpm2CommandLib.h>
#include <Library/Tpm2DeviceLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/BaseLib.h>
#include <Library/DebugLib.h>

Go to the source code of this file.

Data Structures
struct	TPM2_DICTIONARY_ATTACK_LOCK_RESET_COMMAND
struct	TPM2_DICTIONARY_ATTACK_LOCK_RESET_RESPONSE
struct	TPM2_DICTIONARY_ATTACK_PARAMETERS_COMMAND
struct	TPM2_DICTIONARY_ATTACK_PARAMETERS_RESPONSE

Functions
EFI_STATUS EFIAPI	Tpm2DictionaryAttackLockReset (IN TPMI_RH_LOCKOUT LockHandle, IN TPMS_AUTH_COMMAND *AuthSession)
EFI_STATUS EFIAPI	Tpm2DictionaryAttackParameters (IN TPMI_RH_LOCKOUT LockHandle, IN TPMS_AUTH_COMMAND *AuthSession, IN UINT32 NewMaxTries, IN UINT32 NewRecoveryTime, IN UINT32 LockoutRecovery)

Detailed Description

Implement TPM2 DictionaryAttack related command.

Copyright (c) 2013 - 2016, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file Tpm2DictionaryAttack.c.

Function Documentation

Tpm2DictionaryAttackLockReset()

EFI_STATUS EFIAPI Tpm2DictionaryAttackLockReset	(	IN TPMI_RH_LOCKOUT	LockHandle,
		IN TPMS_AUTH_COMMAND *	AuthSession
	)

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.

Parameters

[in]	LockHandle	TPM_RH_LOCKOUT
[in]	AuthSession	Auth Session context

Return values

EFI_SUCCESS	Operation completed successfully.
EFI_DEVICE_ERROR	Unexpected device behavior.

Definition at line 61 of file Tpm2DictionaryAttack.c.

Tpm2DictionaryAttackParameters()

EFI_STATUS EFIAPI Tpm2DictionaryAttackParameters	(	IN TPMI_RH_LOCKOUT	LockHandle,
		IN TPMS_AUTH_COMMAND *	AuthSession,
		IN UINT32	NewMaxTries,
		IN UINT32	NewRecoveryTime,
		IN UINT32	LockoutRecovery
	)

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.

Parameters

[in]	LockHandle	TPM_RH_LOCKOUT
[in]	AuthSession	Auth Session context
[in]	NewMaxTries	Count of authorization failures before the lockout is imposed
[in]	NewRecoveryTime	Time in seconds before the authorization failure count is automatically decremented
[in]	LockoutRecovery	Time in seconds after a lockoutAuth failure before use of lockoutAuth is allowed

Return values

EFI_SUCCESS	Operation completed successfully.
EFI_DEVICE_ERROR	Unexpected device behavior.

Definition at line 140 of file Tpm2DictionaryAttack.c.