The PlayReady Client must be able to follow the policies sent in the license response and play back content if all the mandatory policies are met, or halt play back if any of the mandatory policies are not met. When the client receives the license response from the PlayReady License Server, it must be able to parse the content key and the policies sent back in the licenses it receives. Each license contains one and only one Content Key and a set of associated policies. Note that a license response may contain multiple licenses. These policies can be rights, such as the Play right, or restrictions, such as the Minimum Security Level, Output Protection Level, expiration after first play, and so on. The service provider must incorporate the mandatory policies and choose which of the optional policies to use, and have these policies integrated into the license handler on the PlayReady License Server.
PlayReady policies are defined in the PlayReady Compliance Rules (CR). In addition, the license response will return the PlayReady policies (rights and restrictions) under which the content can be played.Ī PlayReady policy describes the actions permitted and/or required with respect to PlayReady content and restrictions on those actions as described in the PlayReady license associated with the PlayReady content. The response will include the content key (CK) originally used to encrypt the content that corresponds to the key identifier (KID) sent in the license challenge, or several of them. Once the challenge is received by the PlayReady License Server, the Server parses the challenge and begins to populate the license response. During license acquisition, the client sends a challenge to the PlayReady License Server containing the content header and information about the user's device.
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