aes加密

using System;
using System.Security.Cryptography;
using System.Text;
using System.IO;

namespace GraduationDesign
{
    class AESEncryption
    {
        //默认密钥向量 
        private static byte[] _key1 = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF, 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };

        /// <summary>
        /// AES加密算法
        /// </summary>
        /// <param name="plainText">明文字符串</param>
        /// <param name="strKey">密钥</param>
        /// <returns>返回加密后的密文字节数组</returns>
        public static byte[] AESEncrypt(string plainText, string strKey)
        {
            //分组加密算法
            SymmetricAlgorithm des = Rijndael.Create();
            byte[] inputByteArray = Encoding.UTF8.GetBytes(plainText);//得到需要加密的字节数组    
            //设置密钥及密钥向量
            des.Key = Encoding.UTF8.GetBytes(strKey);
            des.IV = _key1;
            MemoryStream ms = new MemoryStream();
            CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write);
            cs.Write(inputByteArray, 0, inputByteArray.Length);
            cs.FlushFinalBlock();
            byte[] cipherBytes = ms.ToArray();//得到加密后的字节数组
            cs.Close();
            ms.Close();
            return cipherBytes;
        }

        /// <summary>
        /// AES解密
        /// </summary>
        /// <param name="cipherText">密文字节数组</param>
        /// <param name="strKey">密钥</param>
        /// <returns>返回解密后的字符串</returns>
        public static byte[] AESDecrypt(byte[] cipherText, string strKey)
        {
            SymmetricAlgorithm des = Rijndael.Create();
            des.Key = Encoding.UTF8.GetBytes(strKey);
            des.IV = _key1;
            byte[] decryptBytes = new byte[cipherText.Length];
            MemoryStream ms = new MemoryStream(cipherText);
            CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Read);
            cs.Read(decryptBytes, 0, decryptBytes.Length);
            cs.Close();
            ms.Close();
            return decryptBytes;
        }
    }
    class Program
    {
        static void Main(string[] args)
        {
            string text="";
            do{
            Console.WriteLine("请输入明文");
            text = Console.ReadLine(); ; //明文
            string keys = "0000000000000000";//密钥,128位            
            byte[] encryptBytes = AESEncryption.AESEncrypt(text, keys);
            //将加密后的密文转换为Base64编码，以便显示，可以查看下结果
            Console.WriteLine("明文:" + text);
            Console.WriteLine("密文:" + Convert.ToBase64String(encryptBytes));
            //解密
            byte[] decryptBytes = AESEncryption.AESDecrypt(encryptBytes, keys);
            //将解密后的结果转换为字符串,也可以将该步骤封装在解密算法中
            string result = Encoding.UTF8.GetString(decryptBytes);
            Console.WriteLine("解密结果：" + result);
            }while(text!="exit");
        }
    }
}