[any ANONYMOUS forum user]

Hello,

I'm not completely sure the DRM mechanism, though I went
through many web postings.

I purchased 1 month valid license for download WMV files. While license was valid I downloaded some WMV files. Some of them were unDRMed by FairUse4WM. They were successfully converted into [No DRM]files and work without problem even now. But I didn't convert some of them. In the meantime license was expired. Now I can not play these files. Everytime I try to play the file, login popup comes out. My account is not available now.

I checked KID/SID of these files by FairUse4WM. Output is
here:

C:\FreeMe2\DRM.wmv
<KID>C1Eh4BGyk2zwOQ0x90pyr==></KID>
(no license)

Output of FreeMe2:

C:\FreeMe2>freeme2 -v drm.wmv
Found DRMv2 header object.
Found KID (C1Eh4fBGyk2zwOQ0x90puw==)
Found CHECKSUM (MBrN*vHunA==)
Found DRMv1 header object.
Found DRMv1 header object.
Starting to look for license.
License file full path: C:\Documents and Settings\All Users\DRM\drmstore.hds
Enter SID for this file:

On the contrary, KID/SID of .asf file I downloaded at free stream web site is here (by FairUse4WM ). This file can be converted into [No DRM]file.

C:\FreeMe2\Stream.asf
<KID>6/mjFhBC9kKIvmIrRcwTfQ==</KID>
<SID>pKWmYFvaEIMETuLCaCAzeVLU96A=</SID>

Output of FreeMe2:

C:\FreeMe2>freeme2 -v stream.asf
Found DRMv2 header object.
Found KID (6/mjFhBC9kKIvmIrRcwTfQ==)
Found CHECKSUM (IZho2hAReQ==)
Found DRMv1 header object.
Found DRMv1 header object.
Starting to look for license.
License file full path: C:\Documents and Settings\All Users\DRM\drmstore.hds
Checking license with PUBKEY 56ee41ebe04ec65e94b506a36f3134a9cfdb8282
Couldn't open blackbox-keys.txt file
Enter IBX private key or hit enter:

What I want to know is to obtain/extract SID.

My PC environment is as follows:
IndivBox.key v11.0.5497.6285
WMP 10.00.00.4058 (Rolled back from WMP 11)
Windows XP SP2

Please advice....