2.2.1.5.2 Revocation List Version Information Record
The revocation information version structure is limited to a maximum size of 10 kilobytes.
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ListID (16 bytes) |
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Version |
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ListID (16 bytes): Contains the identifier for the revocation list. The valid GUIDs for the ListID field are:
{90A37313-0ECF-4CAA-A906-B188F6129300}: Windows Media DRM Application CRL. For this list ID, the lower 32 bits of the version MUST be a 32-bit unsigned integer (little-endian).
{3129E375-CEB0-47D5-9CCA-9DB74CFD4332}: Windows Media DRM for Portable Devices CRL. For this list ID, the lower 32 bits of the version MUST be a 32-bit unsigned integer.
{CD75E604-543D-4A9C-9F09-FE6D24E8BF90}: WMDRM: Network Devices Protocol or COPP Driver CRL. For this list ID, the lower 32 bits of the version MUST be a 32-bit unsigned integer.
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Additionally, a GUID is specified for representing the RIV itself. This GUID is used to represent the RIV in revocation list request and response messages. This allows updated RIVs to be transferred via the revocation list update procedure.
{CCDE5A55-A688-4405-A88B-D13F90D5BA3E}: Identifies the RIV itself.
Version (8 bytes): Indicates the current version number.
The authenticity of the RIV MUST be verified prior to its usage. To verify the RIV signature, a device MUST verify that the signing certificate, which is part of RIV, is directly signed by the Microsoft root certificate and has the SignCRL element value set to the string "1". Optionally, devices can store the well-known Microsoft CRL signing public key in secure, nonvolatile storage. For devices that choose this approach, verifying the RIV involves only checking the signature on the RIV itself.