The scheme for improving the efficiency of block cipher algorithm

The most important network and communication security automation tool is encryption. Two forms of encryption widely used are symmetric and asymmetric encryption. The article expounds the fundamental principles of symmetric encryption algorithm IDEA firstly, then studies the implementation technique to improve the speed of algorithm under the situation that the algorithm is confirmed and gives some effective methods to optimize block cipher algorithm, and optimizes the implementation of IDEA encryption algorithm and obtains the test results.