In current scenario, electronic devices handling confidential information. In these devices encryption algorithm proposed have been satisfy to protect the confidential information and known for their cryptographic applications. The extensively use of reconfigurable processor like FPGA for cryptographic application which have reduced the time to market of hardware logic. In this survey presented that the FPGA-based hardware architecture is best approach for high performance of circuit, it reduces the response time and resources. This hardware architecture work on Verilog as well as VHDL language.