AUTHENTICATION TOKEN FOR IDENTIFYING CLONING ATTACK ONTO SAID AUTHENTICATION TOKEN Russian patent published in 2012 - IPC H04L29/06 

FIELD: information technology.

SUBSTANCE: authentication token has a microprocessor (11), memory (12), a stored secret key (Ki) and a set of instructions for controlling the microprocessor (11) into performing an authentication calculation based on a received random number (RAND) and based on the stored secret key, said token including a memory location meant for storing a counter value, where said memory contains instructions, where during use for each authentication calculation, said instructions alter the counter value.

EFFECT: detecting attempts to clone an authentication token.

13 cl, 2 dwg