Patent ID: 7421411
Filing Date: 2008-09-02
Classification: G06F,G06Q,H04L,H04W

Abstract:
1. A method comprising: sending with a wireless device a request for a voucher for protected content of a digital asset encrypted with a content key and information expressed in the voucher for obtaining rights to the content, said digital asset to be downloaded to the wireless device from any one of a plurality of content servers; receiving with the wireless device a primary and a secondary voucher separate from said protected content; said primary voucher allowing a user to render content a plurality of times, and including a first pointer to the content, and further including a first reference to the secondary voucher; said secondary voucher allowing a preview of the content to be distributed to another user, and including a second pointer to the content, and further including a second reference to the secondary voucher allowing the secondary voucher to create a duplicate of itself; said primary and secondary vouchers having metadata including: said primary voucher including transaction information including said content key; accessing the primary voucher in the wireless device to cause a duplicate of the content as a primary content copy to be transmitted to a receiving terminal with the right to copy the content in response to said selective intent rules; using the first reference in the primary voucher to access the secondary voucher in the wireless device to cause a preview copy of the content to be transmitted to a receiving terminal with no right to copy the content in response to said selective intent rules; enabling the wireless device to decrypt said encrypted content with said content key; and interpreting said use information in said vouchers to carry out said selective intent rules.