Abstract: A distribution process with access control of scrambled data to at least one receiver terminal. The process includes an encryption phase that subdivides the data into an integer of families each including an integer of blocks, assigns each family a specific identification parameter associated with at least one descrambling module having a specific processing capacity and a level of security, and scrambles each block of a family of a type by a key in biunivocal relation with the parameter. A descrambling phase identifies the family of each block and descrambles each block of a family of the type by the descrambling module by the key.

Abstract: The present invention relates to a process for distributing digital data to a plurality of user terminals (2) connected to a service provider, via an IP data transmission network (6), each user terminal (2) being identified in the network by an IP address and by a unique address UA entered in a security processor. The process according to the invention consists in associating an access condition defined at HTTP protocol level with the data for distribution.