WP197 - CipherStream Protocol: How CoolRunner-II CPLDs Protect FPGA IP
It doesnÃƒÂ¢Ã¢â€šÂ¬Ã¢â€žÂ¢t usually take very long to create an FPGA design. Recently, however, a Xilinx competitor ran an ad declaring that while an FPGA can take up to a year to design, it can be cloned in only a second. Are FPGA designs really that insecure? While the ad seems absurdly hyperbolic, it is true that the bitstreams of some volatile FPGAs can be cloned. While itÃƒÂ¢Ã¢â€šÂ¬Ã¢â€žÂ¢s unlikely that cloning could happen in "a second,"