Cryptographic engines for cloud based on FPGA

Cryptographic operations are being performed in all security critical applications and devices. Encryption/Decryption and authentication operations are used in the cloud server for full virtual machine encryption, protection of data at rest, data in motion, etc. Execution of cryptographic operations on the processor reduces the efficiency and increases heat production. Integration of fieldprogrammable gate array (FPGA) devices to cloud data centers opens up the opportunity to implement critical tasks in hardware, thereby improving the efficiency. Security being a critical application on cloud can be implemented on hardware to improve performance and reduce heat production. This chapter presents hardware implementation of four cryptographic engines-AES, DES, SHA, and MD5 on FPGA. Finally, an adaptive reconfigurable security system with the four cryptographic engines using partial reconfiguration is discussed. Depending on the dynamic need, only the necessary algorithm can be loaded which saves power and area.