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  • 02-26 ASP.NET加密解密的方法

    MD5加密、解密的方法。

      使用时的代码备忘:Response.Write(FormsAuthentication.HashPasswordForStoringInConfigFile("要加密的字符串", "MD5"));

    以下是加密、解密的代码部分:

    复制代码
    /*用法
     protected void Page_Load(object sender, EventArgs e)
        {
            //加密
            this.Title = CEncrypt.DesEncrypt("pwd", CEncrypt.Key);
            this.Title += CEncrypt.DesDecrypt(this.Title, CEncrypt.Key);
            Response.Write(CEncrypt.DesDecrypt("gAYyhdLQunc=", CEncrypt.Key));
        }
     */
    using System;
    using System.IO;
    using System.Text;
    using System.Security.Cryptography;
    using System.Web;
    
    namespace YD.Common
    {
        /// <summary>
        /// 加密码类
        /// </summary>
        public class CEncrypt
        {
            /// <summary>
            /// 加密
            /// </summary>
            /// <param name="inputString"></param>
            /// <returns></returns>
            public static string DesEncrypt(string inputString)
            {
                return DesEncrypt(inputString, Key);
            }
            /// <summary>
            /// 解密
            /// </summary>
            /// <param name="inputString"></param>
            /// <returns></returns>
            public static string DesDecrypt(string inputString)
            {
                return DesDecrypt(inputString, Key);
            }
            /// <summary>
            /// 密匙
            /// </summary>
            private static string Key
            {
                get
                {
                    return "hongye10";
                }
            }
            /// <summary>
            /// 加密字符串
            /// 注意:密钥必须为8位
            /// </summary>
            /// <param name="strText">字符串</param>
            /// <param name="encryptKey">密钥</param>
            /// <param name="encryptKey">返回加密后的字符串</param>
            public static string DesEncrypt(string inputString, string encryptKey)
            {
                byte[] byKey = null;
                byte[] IV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };
                try
                {
                    byKey = System.Text.Encoding.UTF8.GetBytes(encryptKey.Substring(0, 8));
                    DESCryptoServiceProvider des = new DESCryptoServiceProvider();
                    byte[] inputByteArray = Encoding.UTF8.GetBytes(inputString);
                    MemoryStream ms = new MemoryStream();
                    CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(byKey, IV), CryptoStreamMode.Write);
                    cs.Write(inputByteArray, 0, inputByteArray.Length);
                    cs.FlushFinalBlock();
                    return Convert.ToBase64String(ms.ToArray());
                }
                catch (System.Exception error)
                {
                    //return error.Message;
                    return null;
                }
            }
            /// <summary>
            /// 解密字符串
            /// </summary>
            /// <param name="this.inputString">加了密的字符串</param>
            /// <param name="decryptKey">密钥</param>
            /// <param name="decryptKey">返回解密后的字符串</param>
            public static string DesDecrypt(string inputString, string decryptKey)
            {
                byte[] byKey = null;
                byte[] IV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };
                byte[] inputByteArray = new Byte[inputString.Length];
                try
                {
                    byKey = System.Text.Encoding.UTF8.GetBytes(decryptKey.Substring(0, 8));
                    DESCryptoServiceProvider des = new DESCryptoServiceProvider();
                    inputByteArray = Convert.FromBase64String(inputString);
                    MemoryStream ms = new MemoryStream();
                    CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(byKey, IV), CryptoStreamMode.Write);
                    cs.Write(inputByteArray, 0, inputByteArray.Length);
                    cs.FlushFinalBlock();
                    System.Text.Encoding encoding = new System.Text.UTF8Encoding();
                    return encoding.GetString(ms.ToArray());
                }
                catch (System.Exception error)
                {
                    //return error.Message;
                    return null;
                }
            }
        }
    }
    复制代码
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  • 原文地址:https://www.cnblogs.com/xiaoqingshe/p/4301084.html
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