FLEXIBLE ARCHITECTURE FOR LICENSING IN COPYRIGHT CONTROL SYSTEM Russian patent published in 2010 - IPC G06F12/14 

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to a system for controlling access to digital content. The user license has decryption and authorisation parts. The decryption part is only accessible for that user and has a key (KD) for decrypting the corresponding encrypted digital content, as well as validation information which includes identification of the root confidential legal source. The authorisation part described rights granted relative the digital content and conditions which must be satisfied in order to grant the rights and has a digital signature. The user accesses the decryption part and validates the contained information in order to validate the digital signature of the authorisation part. If conditions in the authorisation part allow this, rights in the authorisation part are granted by decrypting the encrypted content using the decryption key (KD) from the decryption part and the decrypted content is transmitted.

EFFECT: possibility using several root confidential legal sources and determine which of the said sources can be used for authentication.

15 cl, 6 dwg