Patent ID: 8561186
Filing Date: 2013-10-15
Classification: G06F

Abstract:
1. A detection circuit, comprising: a sensing circuit configured to sense whether there is an external attack and generate second data from first data, the sensing circuit including a plurality of random data generators connected through a plurality of sets of metal lines for sensing the external attack; a data conversion circuit configured to convert the first data to third data; and a comparator configured to compare the second data with the third data, wherein: a first of the plurality of random data generators is configured to receive the first data and to generate a first random data different from the first data, a last of the plurality of random data generators is configured to receive a last random data different from the first data and to generate the second data, and a second of the plurality of random data generators is configured to receive the first random data and to generate the last random data, the first random data being different from the last random data.