APPARATUS AND METHOD FOR PREVENTING PUF ERROR

摘要

The present invention relates to a device and method for preventing a bit error in a physical copy prevention function based on a static random access memory (SRAM). The method, which is used to prevent the error in the physical copy prevention function, includes the steps of: selecting a random number as an input value of the physical copy prevention function based on a volatile memory device and checking a response corresponding to the selected input value; separating cells having multiple bits corresponding to the response according to the error frequency; calculating the number of white cells without errors in the separation result; and checking whether the number of the white cells is larger than a threshold number of the white cells set in advance and selecting another input value of the physical copy prevention function based on the check result.