WMRMLicenseRevocationChallenge.GetTransactionId
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WMRMLicenseRevocationChallenge.GetTransactionId
The GetTransactionId method retrieves the transaction ID from the license revocation challenge.
Syntax
String = WMRMLicenseRevocationChallenge .GetTransactionId
Parameters
This method takes no parameters.
Return Values
If the method succeeds, it returns a String containing the transaction ID. If it fails, it returns a number in the error object.
Remarks
The transaction ID is generated by the client when initiating the license revocation process.
Example Code
'"""""""""""""""""""""""""""""""""""""""""""""""""""""
' Declare variables.
'"""""""""""""""""""""""""""""""""""""""""""""""""""""
Dim LRChallengeObj ' WMRMLicenseRevocationChallenge object
Dim LRResponseObj ' WMRMLicenseRevocationResponse object
Dim LRChallString ' License revocation challenge string
Dim ClientMachineID ' Value that identifies the client computer
Dim CustomDataArray ' Array to hold the custom data
Dim CustomDataItem ' Counter
Dim UIDValue ' User ID value
Dim KIDValue ' Key ID value
Dim ChallTransID ' Transaction ID in the challenge
Dim ClientPubkey ' Public key of the client computer
Dim CustomDataString ' Custom data included by the client plug-in
Dim KeyID ' Key ID identifying the licenses to revoke
Dim LRPubkey ' Public key for license revocation
Dim LRPrivkey ' Private key for license revocation
Dim LRResponseString ' License revocation response string
'"""""""""""""""""""""""""""""""""""""""""""""""""""""
' Set variables.
'"""""""""""""""""""""""""""""""""""""""""""""""""""""
LRChallString = "<Replace this with a challenge string>"
LRPubkey = "<Replace this with the license revocation public key>"
LRPrivkey = "<Replace this with the license revocation private key>"
'"""""""""""""""""""""""""""""""""""""""""""""""""""""
' Set the license revocation challenge into the WMRMLicenseRevocationChallenge object.
' Retrieve the client computer ID, public key, transaction ID, and custom data.
'"""""""""""""""""""""""""""""""""""""""""""""""""""""
Set LRChallengeObj = Server.CreateObject("WMRMObjs.WMRMLicenseRevocationChallenge")
Call LRChallengeObj.Initialize(LRChallString)
ClientMachineID = LRChallengeObj.GetMachineId
ChallTransID = LRChallengeObj.GetTransactionId
ClientPubkey = LRChallengeObj.GetMachinePublicKey
' B64Decode is a custom function to decode the base64-encoded string.
CustomDataString = B64Decode(LRChallengeObj.GetCustomData())
'"""""""""""""""""""""""""""""""""""""""""""""""""""""
' Create the license revocation response.
'"""""""""""""""""""""""""""""""""""""""""""""""""""""
Set LRResponseObj = Server.CreateObject("WMRMObjs.WMRMLicenseRevocationResponse")
'"""""""""""""""""""""""""""""""""""""""""""""""""""""
' Process your custom data and follow your business logic
' to determine which licenses to delete.
' In this sample, assume the custom data specified a user ID
' (UID) of 123 and a key ID (KID) of 456; the custom data string
' would be "UID=123;KID=456;"
' So, in this sample, if a user ID is present, set it into
' the CustomData property.
' If a key ID is present, set it into the KeyId property.
' If both values are specified, only licenses with both
' values will be revoked.
'"""""""""""""""""""""""""""""""""""""""""""""""""""""
CustomDataArray = Split(CustomDataString, ";")
For Each CustomDataItem in CustomDataArray
If InStr(CustomDataItem, "UID=") > 0 then ' Specify a user ID
UIDValue = right(CustomDataItem, Len(CustomDataItem)-Len("UID:"))
LRResponseObj.CustomData = UIDValue
Elseif InStr(CustomDataItem, "KID=") > 0 then ' Specify a key ID
KIDValue = right(CustomDataItem, Len(CustomDataItem) - Len("KID:"))
LRResponseObj.KeyId = KIDValue
End If
Next
'"""""""""""""""""""""""""""""""""""""""""""""""""""""
' Specify the license revocation public key and the transaction ID.
' Generate the license revocation response.
'"""""""""""""""""""""""""""""""""""""""""""""""""""""
LRResponseObj.RevocationPublicKey = LRPubkey
LRResponseObj.TransactionId = ChallTransID
LRResponseString = LRResponseObj.GenerateSignedResponse(LRPrivkey, ClientPubkey)
Requirements
Version: Windows Media Rights Manager 10 SDK or later
Reference: wmrmobjs 1.0 Type Library
Library: wmrmobjs.dll
Platform: Windows Server 2003
See Also
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