METHOD OF MULTIMEDIA DATA PROTECTION Russian patent published in 2012 - IPC H04N7/16 

FIELD: information technology.

SUBSTANCE: method of data transmission to client computer executing client program includes following steps: a) data transmission to client program, b) transmission of program code containing algorithm from protection server to client program where algorithm result is function of client program status, c) executing the mentioned code by client program and returning result to protection server and facilities connected with protection server, and d) determination by protection server or facilities connected with protection server whether the obtained result indicates absence of client program modification.

EFFECT: better protection against client modification.

29 cl, 5 dwg