using NFine.Code; using System; using System.Collections.Generic; using System.Configuration; using System.Data; using System.Data.Common; using System.IO; using System.Linq; using System.Reflection; using System.Security.Cryptography; using System.Text; using System.Threading.Tasks; using System.Web; namespace NFine.Application.Encrypt { public class EnciphermentApp { public void Encryption(string ICSInspections) { try { string url = HttpContext.Current.Request.Url.Host; if (url != "localhost") { throw new Exception("您无该操作权限,请联系管理员!"); } var queryParam = ICSInspections.ToJObject(); List<DbParameter> parameter = new List<DbParameter>(); string DbTXT = queryParam["Encipherment"].ToString(); string MD5DbTXT = ToMd5(DbTXT); SetValue("connstr", MD5DbTXT); } catch (Exception ex) { throw ex ; } } /// <summary> /// 根据Key修改Value /// </summary> /// <param name="key">要修改的Key</param> /// <param name="value">要修改为的值</param> public static void SetValue(string key, string value) { System.Xml.XmlDocument xDoc = new System.Xml.XmlDocument(); xDoc.Load(HttpContext.Current.Server.MapPath("~/Configs/database.config")); System.Xml.XmlNode xNode; System.Xml.XmlElement xElem1; System.Xml.XmlElement xElem2; xNode = xDoc.SelectSingleNode("//connectionStrings"); xElem1 = (System.Xml.XmlElement)xNode.SelectSingleNode("//add[@name='" + key + "']"); if (xElem1 != null) xElem1.SetAttribute("connectionString", value); else { xElem2 = xDoc.CreateElement("add"); xElem2.SetAttribute("name", key); xElem2.SetAttribute("connectionString", value); xNode.AppendChild(xElem2); } xDoc.Save(HttpContext.Current.Server.MapPath("~/Configs/database.config")); } #region 字符串加解密 /// <summary> /// MD5加密 /// </summary> /// <param name="str"></param> /// <returns></returns> public static string ToMd5(string str) { return Encrypt(str, "&%#@?,:*_"); } /// <summary> /// MD5解密 /// </summary> /// <param name="str"></param> /// <returns></returns> public static string FromMd5(string str) { //return str; return Decrypt(str, "&%#@?,:*_"); } /// <summary> /// 加密 /// </summary> /// <param name="strText"></param> /// <param name="strEncrKey"></param> /// <returns></returns> private static String Encrypt(String strText, String strEncrKey) { Byte[] byKey = { }; Byte[] IV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF }; try { byKey = System.Text.Encoding.UTF8.GetBytes(strEncrKey.Substring(0, 8)); DESCryptoServiceProvider des = new DESCryptoServiceProvider(); Byte[] inputByteArray = Encoding.UTF8.GetBytes(strText); 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 (Exception ex) { return ex.Message; } } /// <summary> /// 解密 /// </summary> /// <param name="strText"></param> /// <param name="sDecrKey"></param> /// <returns></returns> private static String Decrypt(String strText, String sDecrKey) { Byte[] byKey = { }; Byte[] IV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF }; Byte[] inputByteArray = new byte[strText.Length]; try { byKey = System.Text.Encoding.UTF8.GetBytes(sDecrKey.Substring(0, 8)); DESCryptoServiceProvider des = new DESCryptoServiceProvider(); inputByteArray = Convert.FromBase64String(strText); 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 = System.Text.Encoding.UTF8; return encoding.GetString(ms.ToArray()); } catch (Exception ex) { return ex.Message; } } #endregion } }