Method for managing retry counter in portable data carrier, involves calculating current count of retry counter based on determined number of consecutive unsuccessful attempts during the execution of the next security operation

摘要

The method involves determining the number of consecutive unsuccessful attempts of peripheral component interconnect (PCI) of a buffer memory (26) within a non-volatile memory area (22) of the portable data carrier (10), during security process. The current count of a retry counter (24) is calculated and processed based on the determined number of consecutive unsuccessful attempts during the execution of the next security operation. An independent claim is included for portable data carrier.