Patent ID: 7224805

Claim:
A method of decrypting encrypted content stored on a terminal, the method comprising the steps of: receiving a request to access encrypted content on a terminal; obtaining a license comprising a content decryption key and a set of binding attributes, the attributes including a public key of an authorized user of the encrypted content; in response to the request, polling a personal trusted device of said user to digitally sign data with a private key associated with the device; receiving said digitally signed data from said device; verifying at the terminal the digitally signed data utilizing the public key; and wherein the terminal in response to verification of the digitally signed data uses the content decryption key to decrypt the encrypted content; following said step of receiving said digitally signed data, applying a hashing algorithm to said data and decrypting said digitally signed data; and comparing results of said application of said hashing algorithm with said decrypted data in said step of verifying.