Memory database creation system for encrypted programme material

A method for generating a database of location identifiers for respective portions of at least one of material data, video material and audio data material auxiliary data (2) relating to a broadcast program content a memory device (4), received the material data by a data receiver broadcast from a remote location in a coded (2) and characterized format that the method comprises the steps of decoding the data material received (8) , analyze the data material (10) to generate a multitude of location identifiers for respective portions of the data material, and storing said location identifiers in a database (6), and locally encoding (12) the material data before storing in the memory device (4).