DATA CARRIER WITH PROTECTION FROM UNSANCTIONED ACCESS Russian patent published in 2005 - IPC

FIELD: data carriers.

SUBSTANCE: data carrier has memory with program, capable of performing operation h. These data and the very operation h are subjected to distortion to prevent unsanctioned access to data x, processed with said operation h. Distortions of data x and said operation h are mutually synchronized to receive, in case of performing distorted operation h_R1R2, either non-distorted output data y, received as a result of performing non-distorted operation h with them, or distorted output data from which it is possible to produce output data y.

EFFECT: higher efficiency.

2 cl, 6 dwg