97 lines
3.6 KiB
C#
97 lines
3.6 KiB
C#
using System;
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using System.IO;
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using System.Security.Cryptography;
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using System.Text;
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using System.Web.Security;
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namespace _1200Gxml心电图绘制
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{
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public class DesEncrypt
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{
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#region ========加密========
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/// <summary>
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/// 加密
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/// </summary>
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/// <param name="text"></param>
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/// <returns></returns>
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public static string Encrypt(string text)
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{
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return Encrypt(text, "da1ff5@1b453d1f66d83bc6e7c5cab4$");
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}
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/// <summary>
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/// 加密数据
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/// </summary>
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/// <param name="text"></param>
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/// <param name="sKey"></param>
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/// <returns></returns>
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public static string Encrypt(string text, string sKey)
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{
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var des = new DESCryptoServiceProvider();
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var inputByteArray = Encoding.Default.GetBytes(text);
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var hashPasswordForStoringInConfigFile =
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FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5");
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if (hashPasswordForStoringInConfigFile != null)
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des.Key = Encoding.ASCII.GetBytes(hashPasswordForStoringInConfigFile.Substring(0, 8));
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var passwordForStoringInConfigFile = FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5");
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if (passwordForStoringInConfigFile != null)
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des.IV = Encoding.ASCII.GetBytes(passwordForStoringInConfigFile.Substring(0, 8));
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var ms = new MemoryStream();
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var cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write);
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cs.Write(inputByteArray, 0, inputByteArray.Length);
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cs.FlushFinalBlock();
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var ret = new StringBuilder();
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foreach (var b in ms.ToArray()) ret.AppendFormat("{0:X2}", b);
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return ret.ToString();
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}
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#endregion
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#region ========解密========
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/// <summary>
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/// 解密
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/// </summary>
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/// <param name="text"></param>
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/// <returns></returns>
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public static string Decrypt(string text)
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{
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return Decrypt(text, "da1ff5@1b453d1f66d83bc6e7c5cab4$");
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}
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/// <summary>
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/// 解密数据
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/// </summary>
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/// <param name="text"></param>
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/// <param name="sKey"></param>
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/// <returns></returns>
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public static string Decrypt(string text, string sKey)
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{
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var des = new DESCryptoServiceProvider();
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var len = text.Length / 2;
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var inputByteArray = new byte[len];
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int x, i;
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for (x = 0; x < len; x++)
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{
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i = Convert.ToInt32(text.Substring(x * 2, 2), 16);
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inputByteArray[x] = (byte)i;
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}
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var hashPasswordForStoringInConfigFile =
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FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5");
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if (hashPasswordForStoringInConfigFile != null)
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des.Key = Encoding.ASCII.GetBytes(hashPasswordForStoringInConfigFile.Substring(0, 8));
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var passwordForStoringInConfigFile = FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5");
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if (passwordForStoringInConfigFile != null)
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des.IV = Encoding.ASCII.GetBytes(passwordForStoringInConfigFile.Substring(0, 8));
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var ms = new MemoryStream();
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var cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write);
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cs.Write(inputByteArray, 0, inputByteArray.Length);
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cs.FlushFinalBlock();
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return Encoding.Default.GetString(ms.ToArray());
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}
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#endregion
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}
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} |