Windows phone应用开发[16]-数据加密

1: using System; 2: using System.Net; 3: using System.Windows; 4: using System.Windows.Controls; 5:using System.Windows.Documents; 6: using System.Windows.Ink; 7: using System.Windows.Input; 8: usingSystem.Windows.Media; 9: using System.Windows.Media.Animation; 10: using System.Windows.Shapes; 11:  12: using System.Text; 13: using System.Security.Cryptography; 14: usingDataEncryptBuildDemo.DataEncryptCommon.DESDataEncrypt; 15: 　16: namespaceDataEncryptBuildDemo.DataEncryptCommon 17: { 18: /// <summary> 19: /// Des And TripleDES DataEncrypt Operator 20: /// Author:chenkai Date:14/5 2012 21: /// </summary> 22: public classDes_DataEncrypt 23: { 24: /// <summary> 25: /// TripleDes Data Encrypt With Ot Encrypt Key Operator26: /// </summary> 27: /// <param name="sourceContent">Source Need to TripleDes Encrpt Data</param>28: /// <returns>Encrypt Data Byte[] String</returns> 29: public static byte[] TripleDesEncryptWithOutKey(string sourceContent) 30: { 31: if (string.IsNullOrEmpty(sourceContent))32: return null; 33: 　34: var toEncryptSourceStr = Encoding.UTF8.GetBytes(sourceContent); 35:TripleDESCryptoServiceProvider tripleDesEncryptProvider = new TripleDESCryptoServiceProvider(); 36:ICryptoTransform encryptTransform=tripleDesEncryptProvider.CreateEncryptor(); 37: byte[] encryptToBytes = encryptTransform.TransformFinalBlock(toEncryptSourceStr, 0, toEncryptSourceStr.Length); 38: 　39: return encryptToBytes; 40: } 41: 　42: /// <summary> 43: /// TripleDes Data DeEncrypt With Out Encrypt Key Operator 44: /// </summary> 45: /// <param name="encryptBytes">Encrypt Byte Array</param> 46: /// <returns>DeEncrypt SourceContent String</returns> 47: public static string TripleDesDeEncryptWithOutKey(byte[] encryptBytes) 48: { 49:if (encryptBytes == null || encryptBytes.Length <= 0) 50: return string.Empty; 51: 　52:TripleDESCryptoServiceProvider tripleDesProvider = new TripleDESCryptoServiceProvider(); 53:ICryptoTransform deEncryptTransform = tripleDesProvider.CreateDecryptor(); 54: var deEncryptBytes = deEncryptTransform.TransformFinalBlock(encryptBytes, 0, encryptBytes.Length); 55: var deEncryptFormatStr = Encoding.UTF8.GetString(deEncryptBytes, 0, deEncryptBytes.Length); 56: 　57:return deEncryptFormatStr; 58: } 59: 　60: /// <summary> 61: /// TripleDes Data Encrypt Use IVKey Operator 62: /// </summary> 63: /// <param name="sourceContent">Source Content</param> 64: /// <param name="encryptKey">Encrypt Key</param> 65: /// <returns>Encrypt Bytes Array</returns> 66: public staticbyte[] TripleDesEncryptUseIvKey(string sourceContent, byte[] encryptIVKey) 67: { 68: if(string.IsNullOrEmpty(sourceContent) || encryptIVKey == null || encryptIVKey.Length <= 0) 69: returnnull; 70: 　71: var toEncryptSourceStr = Encoding.UTF8.GetBytes(sourceContent); 72:TripleDESCryptoServiceProvider tripleDesProvider = new TripleDESCryptoServiceProvider(); 73: 　74://No Seting Pading 76: var key = tripleDesProvider.Key; //Save Key 77:IsolatedStorageCommon.IsolatedStorageSettingHelper.AddIsolateStorageObj("EncryptKey", key); 78:ICryptoTransform encryptTransform = tripleDesProvider.CreateEncryptor(key, encryptIVKey); 79: var encryptBytes = encryptTransform.TransformFinalBlock(toEncryptSourceStr, 0, toEncryptSourceStr.Length);80: 　81: return encryptBytes; 82: } 83: 　84: 　85: 　86: /// <summary> 87: /// Triple Des DeEncrypt Operator Use IvKey 88: /// </summary> 89: /// <param name="encryptKey">Encrypt key can be null</param> 90: /// <param name="ivKey">Iv</param> 91: /// <param name="encryptBytes">EncryptBytes</param> 92: /// <returns>Return String </returns> 93: public staticstring TripleDesDeEncryptUseIvKey(byte[] encryptKey, byte[] ivKey, byte[] encryptBytes) 94: { 95: if(encryptBytes == null || encryptBytes.Length <= 0) 96: return string.Empty; 97: 　98:TripleDESCryptoServiceProvider tripleDesProvider = new TripleDESCryptoServiceProvider(); 99: 　100: if(encryptKey == null) 101: encryptKey = IsolatedStorageCommon.IsolatedStorageSettingHelper.GetIsolateStorageByObj("EncryptKey") as byte[];102: ICryptoTransform deEncryptTransform = tripleDesProvider.CreateDecryptor(encryptKey, ivKey); 103:var DecryptBytes = deEncryptTransform.TransformFinalBlock(encryptBytes, 0, encryptBytes.Length); 104:string unDecryptFomatStr = Encoding.UTF8.GetString(DecryptBytes, 0, DecryptBytes.Length); 105: 　106:return unDecryptFomatStr; 107: } 108: } 109: }