WMRMChallenge.ClientVersion
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WMRMChallenge.ClientVersion
The ClientVersion property retrieves the security version of the DRM component on the client.
Syntax
String = WMRMChallenge.ClientVersion
Parameters
This property takes no parameters.
Return Values
If the method succeeds, it returns a String containing the DRM component version. If it fails, it returns a number in the error object.
Remarks
The license issuer can determine which version of license to issue based on this value. For example, a client based on a version 10 DRM component supports Windows Media Rights Manager 10 licenses.
Note To set, require, and detect individualization versions greater than 2.10, you must use version 10.1.1 or later of the Windows Media Rights Manager SDK.
This property is read-only.
Example Code
' Assume that the content packager has sent encrypted content and
' a header to a consumer. The consumer's computer determines that
' a license is needed and posts a challenge to the license issuer.
' The challenge contains the header sent by the content packager,
' actions requested by the client, and information about the client
' computer.
'
' For more information about the header, see the WMRMHeader object.
' Declare variables and objects.
Dim sHeader, sClientInfo, sPubKey, lResult, dwActionCnt
Dim sLicRequest, lIndex, sVerClient, sVerSecurity, sAppSecurity
Dim sAction()
Dim HeaderObj
Dim ChallengeObj
Dim DRMVersion
' Create objects.
Set HeaderObj = Server.CreateObject("Wmrmobjs.WMRMHeader")
Set ChallengeObj = Server.CreateObject("Wmrmobjs.WMRMChallenge")
' Retrieve the license request from the client computer.
sLicRequest = request.Form("challenge")
' Set the license request into the WMRMChallenge object.
ChallengeObj.Challenge = sLicRequest
' Retrieve the header from the challenge.
sHeader = ChallengeObj.Header
' Set the header into the WMRMHeader object.
HeaderObj.Header = sHeader
' Verify the header with the public key created by the content
' packager.
lResult = HeaderObj.Verify(sPubKey)
if (lResult = 0) then
' The header has been corrupted.
end if
' Retrieve the DRM client version from the client.
DRMVersion = ChallengeObj.ClientVersion
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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