实现思路,先设置失效时间,将失效时间转为时间戳，使用DESEncrypt进行加密，将加密后的字符返回
验证的时候传入加密后的密文，先用DESEncrypt进行解密，解密后将时间戳转换为时间格式和当前时间比较，如果小于当前时间则表示已过期
新建DESEncrypt类
public class DESEncrypt { /// <summary> /// DES 加密 注意:密钥必须为８位 /// </summary> /// <param name="inputString">待加密字符串</param> /// <param name="encryptKey">密钥</param> /// <returns>加密后的字符串</returns> public static string Encrypt(string inputString, string encryptKey) { encryptKey = encryptKey.Length < 8 ? "xxxxxxxxx" : encryptKey; byte[] byKey = null; byte[] IV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF }; byKey = Encoding.UTF8.GetBytes(encryptKey.Substring(0, 8)); DESCryptoServiceProvider des = new DESCryptoServiceProvider(); byte[] inputByteArray = Encoding.UTF8.GetBytes(inputString); using (MemoryStream ms = new MemoryStream()) { using (CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(byKey, IV), CryptoStreamMode.Write)) { cs.Write(inputByteArray, 0, inputByteArray.Length); cs.FlushFinalBlock(); return Convert.ToBase64String(ms.ToArray()); } } } /// <summary> /// DES 解密 注意:密钥必须为８位 /// </summary> /// <param name="inputString">待解密字符串</param> /// <param name="decryptKey">密钥</param> /// <returns>解密后的字符串</returns> public static string DesDecrypt(string inputString, string decryptKey) { decryptKey = decryptKey.Length < 8 ? "xxxxxxxxx" : decryptKey; byte[] byKey = null; byte[] IV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF }; byte[] inputByteArray = new Byte[inputString.Length]; byKey = Encoding.UTF8.GetBytes(decryptKey.Substring(0, 8)); DESCryptoServiceProvider des = new DESCryptoServiceProvider(); inputByteArray = Convert.FromBase64String(inputString); using (MemoryStream ms = new MemoryStream()) { using (CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(byKey, IV), CryptoStreamMode.Write)) { cs.Write(inputByteArray, 0, inputByteArray.Length); cs.FlushFinalBlock(); return Encoding.UTF8.GetString(ms.ToArray()); } } } }
EmailHelper类
public class EmailHelper { private readonly static string SmtpServer = "smtp.qq.com";//smtp服务器 private readonly static int SmtpServerPort = 25; private readonly static bool SmtpEnableSsl = false; private readonly static string SmtpUsername = "xxx@qq.com";//发件人邮箱地址 private readonly static string SmtpDisplayName = "测试";//发件人昵称 private readonly static string SmtpUserPassword = "abssdf";//授权码 /// <summary> /// 发送邮件到指定收件人 /// </summary> /// <param name="to">收件人地址</param> /// <param name="subject">主题</param> /// <param name="mailBody">正文内容（支持HTML）</param> /// <param name="copyTos">抄送地址列表</param> /// <returns>是否发送成功</returns> public static bool Send(string to, string subject, string mailBody, params string[] copyTos) { return Send(new[] { to }, subject, mailBody, copyTos, new string[] { }, MailPriority.Normal); } /// <summary> /// 发送邮件到指定收件人 /// </summary> /// <remarks> /// 2013-11-18 18:55 Created By iceStone /// </remarks> /// <param name="tos">收件人地址列表</param> /// <param name="subject">主题</param> /// <param name="mailBody">正文内容(支持HTML)</param> /// <param name="ccs">抄送地址列表</param> /// <param name="bccs">密件抄送地址列表</param> /// <param name="priority">此邮件的优先级</param> /// <param name="attachments">附件列表</param> /// <returns>是否发送成功</returns> /// <exception cref="System.ArgumentNullException">attachments</exception> public static bool Send(string[] tos, string subject, string mailBody, string[] ccs, string[] bccs, MailPriority priority, params Attachment[] attachments) { if (attachments == null) throw new ArgumentNullException("attachments"); if (tos.Length == 0) return false; //创建Email实体 var message = new MailMessage(); message.From = new MailAddress(SmtpUsername, SmtpDisplayName); message.Subject = subject; message.Body = mailBody; message.BodyEncoding = Encoding.UTF8; message.IsBodyHtml = true; message.Priority = priority; //插入附件 foreach (var attachent in attachments) { message.Attachments.Add(attachent); } //插入收件人地址，抄送地址和密件抄送地址 foreach (var to in tos.Where(t => !string.IsNullOrEmpty(t))) { message.To.Add(new MailAddress(to)); } foreach (var cc in ccs.Where(c => !string.IsNullOrEmpty(c))) { message.CC.Add(new MailAddress(cc)); } foreach (var bcc in bccs.Where(bc => !string.IsNullOrEmpty(bc))) { message.Bcc.Add(new MailAddress(bcc)); } //创建Smtp客户端 var client = new SmtpClient { Host = SmtpServer, Credentials = new NetworkCredential(SmtpUsername, SmtpUserPassword), DeliveryMethod = SmtpDeliveryMethod.Network, EnableSsl = SmtpEnableSsl, Port = SmtpServerPort }; //发送邮件 client.Send(message); return true; } }
HomeController页面
public class HomeController : Controller { // GET: Home public string Index() { //return "hello!"; string timestamp = GetTimeStamp(); string dncryptStr= Common.DESEncrypt.Encrypt(timestamp, ""); string id = Guid.NewGuid().ToString(); string emilaText= "您重置密码的连接为:http://localhost:13080/Home/RestPwd?id=" + id.ToString()+"&timeout="+dncryptStr; bool flag= Common.EmailHelper.Send("565770751@qq.com", "重置密码", emilaText); return flag ? "发送成功" : "发送失败"; } /// <summary> /// 重置密码 /// </summary> /// <param name="id"></param> /// <param name="timeout"></param> /// <returns></returns> public string RestPwd(string id, string timeout) { string timestamp = Common.DESEncrypt.DesDecrypt(timeout,""); bool flag = Timespan(timestamp); return flag ? "未过期" : "已过期"; } /// <summary> /// 将当前时间转换为时间戳 /// </summary> /// <returns></returns> public string GetTimeStamp() { //设置有效期为20分钟 DateTime time = DateTime.Now.AddMinutes(20); System.DateTime startTime = TimeZone.CurrentTimeZone.ToLocalTime(new System.DateTime(1970, 1, 1, 0, 0, 0, 0)); long t = (time.Ticks - startTime.Ticks) / 10000; //除10000调整为13位 return t.ToString(); } /// <summary> /// 传入时间戳判断是否过期 /// </summary> /// <param name="timeStamp">时间戳串</param> /// <returns></returns> private bool Timespan(string timeStamp) { DateTime nowTime=DateTime.Now; DateTime dtStart = TimeZone.CurrentTimeZone.ToLocalTime(new DateTime(1970, 1, 1)); long lTime = long.Parse(timeStamp + "0000"); TimeSpan toNow = new TimeSpan(lTime); dtStart= dtStart.Add(toNow); return (dtStart-nowTime).Seconds > 0 ? true : false; } }