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

namespace ET
{
    public static class LogSplicingUtil
    {
        /// <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 string AESEncrypt(string plainText, string strKey)
        {
            //分组加密算法
            SymmetricAlgorithm des = Aes.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
            byte[] key1 =
            {
                0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF, 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB,
                0xCD, 0xEF
            };

            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 Convert.ToBase64String(cipherBytes);
        }
    }
}