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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.Security.Cryptography; |
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using System.Text; |
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namespace YX.Common.DotNetEncrypt |
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{ |
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/// <summary> |
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/// 加密、解密帮助类 |
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/// </summary> |
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public static class DESEncrypt |
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{ |
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private static string Key = "sam";//再次加密Key |
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private static byte[] MakeMD5(byte[] original) |
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{ |
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MD5CryptoServiceProvider mD5CryptoServiceProvider = new MD5CryptoServiceProvider(); |
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return mD5CryptoServiceProvider.ComputeHash(original); |
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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="MingWen"></param> |
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/// <param name="KeyString"></param> |
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/// <returns></returns> |
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public static string Encrypt(string MingWen, string KeyString) |
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{ |
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byte[] bytes = Encoding.Default.GetBytes(MingWen); |
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byte[] bytes2 = Encoding.Default.GetBytes(KeyString + Key); |
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return Convert.ToBase64String(new TripleDESCryptoServiceProvider |
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{ |
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Key = DESEncrypt.MakeMD5(bytes2), |
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Mode = CipherMode.ECB |
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}.CreateEncryptor().TransformFinalBlock(bytes, 0, bytes.Length)); |
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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="MiWen">解密字符串</param> |
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/// <param name="KeyString">解密key ;解密key 要与加密key一致</param> |
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/// <returns></returns> |
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public static string Decrypt(string MiWen, string KeyString) |
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{ |
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string result = ""; |
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try |
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{ |
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byte[] array = Convert.FromBase64String(MiWen); |
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byte[] bytes = Encoding.Default.GetBytes(KeyString + Key);//key再次加Key |
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TripleDESCryptoServiceProvider tripleDESCryptoServiceProvider = new TripleDESCryptoServiceProvider(); |
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tripleDESCryptoServiceProvider.Key = DESEncrypt.MakeMD5(bytes); |
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tripleDESCryptoServiceProvider.Mode = CipherMode.ECB; |
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result = Encoding.Default.GetString(tripleDESCryptoServiceProvider.CreateDecryptor().TransformFinalBlock(array, 0, array.Length)); |
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} |
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catch (Exception ex) |
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{ |
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//MessageBox.Show(ex.Message,"提示",MessageBoxButtons.OK,MessageBoxIcon.Error); |
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} |
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return result; |
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} |
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} |
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} |