Clear-Tpm

Clear-Tpm

Resets a TPM to its default state.

구문

Parameter Set: Owner Auth
Clear-Tpm [[-OwnerAuthorization] <String> ] [ <CommonParameters>]

Parameter Set: File
Clear-Tpm -File <String> [ <CommonParameters>]

자세한 설명

The Clear-Tpm cmdlet resets the Trusted Platform Module (TPM) to its default state. A reset removes the owner authorization value and any keys stored in the TPM. To reset a TPM, you must provide a valid owner authorization value. You can enter an owner authorization value or specify a file that contains the value. If you do not provide a value, the cmdlet attempts to use a value stored in the registry.

For more information on TPM, see the Trusted Platform Module Technology Overview in the Technet library at https://technet.microsoft.com/en-us/library/jj131725.aspx.

매개 변수

-File<String>

Specifies a file that contains the current owner authorization value for the TPM. You can use the TPM Management Console to create this file.

-OwnerAuthorization<String>

Specifies the current owner authorization value for the TPM.

<CommonParameters>

이 cmdlet은 일반 매개 변수 -Verbose, -Debug, -ErrorAction, -ErrorVariable, -OutBuffer 및 -OutVariable을 지원합니다. 자세한 내용은 다음을 참조하세요. about_CommonParameters(https://go.microsoft.com/fwlink/p/?LinkID=113216).

입력

입력 유형은 cmdlet에 파이프할 수 있는 개체의 유형입니다.

• String

  The owner authorization value for the TPM.

출력

출력 유형은 cmdlet이 내보내는 개체의 유형입니다.

• TpmObject

  A TpmObject object contains the following information:

  -- TpmReady. Whether a TPM complies with Windows Server® 2012 standards.
  -- TpmPresent. Whether there is a TMP on the current computer.
  -- ManagedAuthLevel. The level at which the operating system manages the owner authorization. Possible values are Legacy, Balanced, and Full.
  -- OwnerClearDisabled. Whether TPM can be reset. If this value is True, the TPM cannot be reset through the operating system by using the owner authorization value. If this value is False, the TPM can be reset through the operating system.
  -- AutoProvisioning. Whether the computer can use auto-provisioning. Possible values are NotDefined, Enabled, Disabled, and DisabledForNextBoot.
  -- LockedOut. Whether a TPM is locked out.
  -- SelfTest. Information returned by a test that TPM runs.

예제

Example 1: Reset TPM

This command resets the TPM. The command uses the owner authorization value stored in the registry instead of specifying a value or using a value in a file.

PS C:\> Clear-Tpm

Example 2: Reset TPM with a supplied authorization value

This command resets the TPM by using the specified owner authorization value.

PS C:\> Clear-Tpm -OwnerAuthorization "vjnuW6rToM41os3xxEpjLdIW2gA="

Example 3: Reset TMP using authorization value from file

This command resets the TPM by using the owner authorization value included in the specified file.

PS C:\> Clear-Tpm -File "MyOwnerAuthFile.tpm"

관련 항목

Get-Tpm

Initialize-Tpm

Unblock-Tpm