Hill2密码破译。适用于明文为拼音的Hill2密码类型。 运行软件平台MATLAB。使用时，只需输入截获的密文，运行程序，即可破译。(Hill2 password decoding. Hill2 cipher type suitable for plaintext pinyin. Running software platform MATLAB. When you use it, you only need to input the intercepted ciphertext and r