Reseach And Design Of IDEA Encryption Chip

Information exchange can be found everywhere in today's information age,whether in e-commerce, e-government, military aerospace fields, or civilian areas, the exchange of information are especially important, and information security has become a serious problem. Data encryption is an active precautionary measure to protect information security. Data encryption is an important means and effective way to solve information security. Hardware encryption device is the most safe and effective data encryption equipment. The IDEA encryption chip of this paper is a new data encryption devices,which can be used to encrypt or decrypt for the data of computers or other equipments and effective protect the safety of information, So it can be widely used in authentication , e-commerce and other fields.This thesis making depth study of the hardware design and implementation of the IDEA encryption algorithm based on the requirements projects ,Researching the solving mathod of the modular addition and modular multiplication and modular addition and multiplication inverse of the IDEA algorithm. As the multiplication modulo-a Fermat Prime,is the critical path of the IDEA ,a new architecture for the dedicated mutiplication based on MCSA (modular carried saved adder)is presented . Based on this realization mathod, we provid the whole goal and design ideas of the IDEA encryption chip,including IDEA encryption chip system architecture, module division and circuit design.Basede on the analysis of basic building blocks,the structure of IDEA is rearranged with eight pipelines. Combining with the character of FPGA ,we analyze each module detail, design the hardware circuit of the complex multiplication, modular inversion and other computing hardware. Design and Implement a FPGA-based IDEA encryption chip, and finally tested on Altera's FPGA ,the test results show that the IDEA encryption chip reach to the desired design goals.