AESEncryption Aes 加密-白红宇

AESEncryption Aes 加密

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发布时间：2019-06-23

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/******************************************************* *  * 作者：朱皖苏 * 创建日期：20180521 * 说明：此文件只包含一个类，具体内容见类型注释。 * 运行环境：.NET 4.0 * 版本号：1.0.0 *  * 历史记录： * 创建文件 朱皖苏 20180521 20:08 * *******************************************************/using System;using System.IO;using System.Security.Cryptography;using System.Text;namespace Dben.CommonLib.Cryptography{    ///     /// Aes 加密    /// 
    public class AESEncryption    {        ///         /// AES加密        /// 
        /// 待加密字符串        /// 16位密钥        /// 
             public static string EncryptAes(string encryptString, string key)        {            try            {                byte[] inputByteArray = Encoding.UTF8.GetBytes(encryptString);                SymmetricAlgorithm des = Aes.Create();                des.Key = Encoding.ASCII.GetBytes(key.Substring(0, 16));                des.IV = Encoding.ASCII.GetBytes(key.Substring(16));                des.Mode = CipherMode.CBC;                des.Padding = PaddingMode.Zeros;                using (MemoryStream mStream = new MemoryStream())                {                    using (CryptoStream cStream = new CryptoStream(mStream, des.CreateEncryptor(), CryptoStreamMode.Write))                    {                        cStream.Write(inputByteArray, 0, inputByteArray.Length);                        cStream.FlushFinalBlock();                        byte[] desBytes = mStream.ToArray();                        StringBuilder sb = new StringBuilder();                        for (int i = 0; i < desBytes.Length; i++)                        {                            sb.Append(desBytes[i].ToString("x2"));                        }                        return sb.ToString();                    }                }            }            catch (Exception)            {                return encryptString;            }        }        ///         /// AES解密         /// 
        /// 解密字符串        /// 密钥        /// 
             public static string DecryptAes(string decryptString, string key)        {            try            {                byte[] inputByteArray = StrToToHexByte(decryptString);                SymmetricAlgorithm des = Aes.Create();                des.Key = Encoding.ASCII.GetBytes(key.Substring(0, 16));                des.IV = Encoding.ASCII.GetBytes(key.Substring(16));                des.Padding = PaddingMode.Zeros;                des.Mode = CipherMode.CBC;                MemoryStream mStream = new MemoryStream();                CryptoStream cStream = new CryptoStream(mStream, des.CreateDecryptor(), CryptoStreamMode.Write);                cStream.Write(inputByteArray, 0, inputByteArray.Length);                cStream.FlushFinalBlock();                byte[] desDecryBytes = mStream.ToArray();                return Encoding.UTF8.GetString(desDecryBytes);            }            catch (Exception)            {                return decryptString;            }        }        ///         /// 转16进制字符串        /// 
        /// 待转换字符串        /// 
             private static byte[] StrToToHexByte(string hexString)        {            try            {                hexString = hexString.Replace(" ", "");                if ((hexString.Length % 2) != 0)                    hexString += " ";                byte[] returnBytes = new byte[hexString.Length / 2];                for (int i = 0; i < returnBytes.Length; i++)                    returnBytes[i] = Convert.ToByte(hexString.Substring(i * 2, 2), 16);                return returnBytes;            }            catch (Exception)            {                return null;            }        }    }}