Patent ID: 7277544

Claim:
A local content security system comprising: (a) a broadcast medium reader, capable of reading a broadcast medium containing encrypted broadcast content encrypted using a broadcast encryption key; (b) a local key generator capable of generating at least one local key set, said local key set containing: (i) a local encryption key; and (ii) a local decryption key; (c) a local content security processor including: (i) a broadcast receiver capable of receiving said encrypted broadcast content; (ii) an encrypted content decryptor, capable of generating decrypted content by decrypting said encrypted broadcast content using a broadcast decryption key, said broadcast decryption key capable of decrypting said encrypted broadcast content; (iii) a local re-encrypter capable of generating local re-encrypted content by re-encrypting said decrypted content using at least one of said local encryption keys; and (iv) a local re-encrypted content dispatcher; (d) a trusted destination including: (i) a local re-encrypted content receiver for receiving said local re-encrypted content from said local re-encrypted content dispatcher; (ii) a local decryption key receiver for receiving said local decryption key from said local decryption key dispatcher; and (iii) a local re-encrypted content decrypter, wherein said local re-encrypted content decrypter constructs processed content by decrypting said local re-encrypted content using said local decryption key; and (e) a local watermarker, capable of applying a local watermark to said decrypted broadcast content.