Export the Audit Log Signature

Intel AMT Features > Access Monitor > Use Cases > Export the Audit Log Signature

Export the Audit Log Signature

The following steps describe how to export the Audit log signature. Starting in Release 8.0, setting the signing key material is not a prerequisite to defining an Audit Log feature but it is a prerequisite to exporting the Audit Log Signature. Therefore, ensure that the signing key material is set before invoking this or the action will fail.

1. Retrieve the instance of AMT_AuditLog, where the “Name” key equals “Intel(r) AMT:Audit Log”.

2. Invoke AMT_AuditALog.ExportAuditLogSignature.

Note:

• To ensure you retrieve the correct signature, Intel recommends that you wrap the ExportAuditSignature method with the lock and unlock methods (see Lock and Unlock the Audit Log).

• Support for SHA1 was implemented in Release 4.0 and deprecated in Release 11.0.

• Support for SHA2-256 and SHA2-384 was implemented in Release 6.0..

Click here for a snippet demonstrating this step

You can execute this snippet by inserting it into the execution template found here.

$auditLogRef =$wsmanConnectionObject.NewReference("SELECT * FROM AMT_AuditLog WHERE Name='Intel(r) AMT:Audit Log'")

$inputObject =$auditLogRef.CreateMethodInput("ExportAuditLogSignature")

$inputObject.SetProperty("SigningMechanism","0")

$outputObject =$auditLogRef.InvokeMethod($inputObject)

$returnValue =$outputObject.GetProperty("ReturnValue")

if($returnValue -like "0")

{

$totalRecordCount =$outputObject.GetProperty("TotalRecordCount")

$signatureMechanism =$outputObject.GetProperty("SignatureMechanism")

$signature =$outputObject.GetProperty("Signature")

$uuid =$outputObject.GetProperty("UUID")

$fqdn =$outputObject.GetProperty("FQDN")

$lengthOfCertificates =$outputObject.GetProperty("LengthOfCertificates")

}

Instance Diagram

Classes Used in This Flow

• AMT_AuditLog

SDK Sample

If there is a sample demonstrating this flow, it is included in the SDK installation file. See SDK Installation Layout for details.