104 lines
3.6 KiB
C#
104 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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namespace RoadFlow.Utility
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{
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/// <summary>
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/// 加解密类
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/// </summary>
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public class Encryption
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{
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/// <summary>
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/// 字符串MD5加密
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/// </summary>
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/// <param name="str"></param>
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/// <returns></returns>
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public static string MD5(string str)
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{
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var md5 = System.Security.Cryptography.MD5.Create();
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var result = md5.ComputeHash(Encoding.UTF8.GetBytes(str));
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var strResult = BitConverter.ToString(result);
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return strResult.Replace("-", "");
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}
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/// <summary>
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/// 字符串SHA1加密
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/// </summary>
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/// <param name="str"></param>
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/// <returns></returns>
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public static string SHA1(string str)
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{
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var sha1 = System.Security.Cryptography.SHA1.Create();
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var result = sha1.ComputeHash(Encoding.UTF8.GetBytes(str));
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var strResult = BitConverter.ToString(result);
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return strResult.Replace("-", "");
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}
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/// <summary>
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/// 加密KEY
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/// </summary>
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private static readonly string encryptKey = "4h!@w$rn";
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/// <summary>
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/// 加密
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/// </summary>
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/// <param name="encryptString"></param>
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/// <returns></returns>
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public static string DESEncrypt(string encryptString)
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{
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try
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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(encryptString);
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string md5SKey = encryptKey;
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des.Key = Encoding.ASCII.GetBytes(md5SKey);
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des.IV = Encoding.ASCII.GetBytes(md5SKey);
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MemoryStream ms = new 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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catch { return ""; }
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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="decryptString"></param>
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/// <returns></returns>
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public static string DESDecrypt(string decryptString)
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{
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try
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{
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DESCryptoServiceProvider des = new DESCryptoServiceProvider();
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int len;
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len = decryptString.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(decryptString.Substring(x * 2, 2), 16);
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inputByteArray[x] = (byte)i;
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}
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string md5SKey = encryptKey;
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des.Key = Encoding.ASCII.GetBytes(md5SKey);
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des.IV = Encoding.ASCII.GetBytes(md5SKey);
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MemoryStream ms = new 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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catch { return ""; }
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}
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}
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}
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