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using System; |
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using System.Collections.Generic; |
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using System.Linq; |
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using System.Web; |
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using System.Security.Cryptography; |
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using System.Text; |
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/// <summary>
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///DESEncrypt 的摘要说明
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/// </summary>
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namespace Basic.Tools |
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{ |
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public class DESEncrypt |
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{ |
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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, "str_key"); |
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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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DESCryptoServiceProvider des = new DESCryptoServiceProvider(); |
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byte[] inputByteArray; |
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inputByteArray = Encoding.Default.GetBytes(Text); |
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des.Key = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8)); |
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des.IV = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8)); |
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System.IO.MemoryStream ms = new System.IO.MemoryStream(); |
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CryptoStream 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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StringBuilder ret = new StringBuilder(); |
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foreach (byte b in ms.ToArray()) |
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{ |
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ret.AppendFormat("{0:X2}", b); |
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} |
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return ret.ToString(); |
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} |
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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, "str_key"); |
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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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DESCryptoServiceProvider des = new DESCryptoServiceProvider(); |
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int len; |
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len = Text.Length / 2; |
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byte[] 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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des.Key = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8)); |
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des.IV = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8)); |
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System.IO.MemoryStream ms = new System.IO.MemoryStream(); |
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CryptoStream 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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} |
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} |