Design and optimization of compact AES as stream cipher in radar system
Tang Jun · Information and Electronic Engineering · 2010
In order to satisfy the encryption requirements of radar system data transfer,the Counter (CTR) mode of Advanced Encryption Standard(AES) was modified into a stream cipher.Through structure folding and module reuse,the resource utilization was reduced and the throughput was increased.In Spartan3 FPGA,276.53 Mbps throughput could be achieved only by using 728 slices.The resource-saving pure logic mode and high-speed distributed memory mode were implemented in the design.On-the-fly key scheduling and pipeline were also performed,which led to high throughput and security level.The real-life test showed the design had satisfied the requirements of radar signal encryption,which revealed a great potential of stream mode AES in radar signal transmission.