C# MD5 加密解密 DES RC2 3DES AES等軟創(chuàng)加密類_

1、C# MD5 加密解密 DES RC2 3DES AES等軟創(chuàng)加密類_ C# 各種加密方法封裝類，軟創(chuàng)加密類，內(nèi)含MD5加密解密、DES法解密加密、RC2加密解密、3DES加密解密，還有AES加解密等，用法時用到哪一種加密方法，可把代碼單獨摘錄出來，本類比較綜合，代碼中包括說明，完整代碼： view sourceprint?001using System; 002using System.Collections.Generic; 003using System.Text; 004using System.IO; 005using System.Security.Cryptography; 00

2、6namespace CLB.Utility.CharTools 007 008 / 009 / 軟創(chuàng)加密類 010 / 011 public static class Cryptography 012 013 / 014 / MD5 加密,靜態(tài)方法 015 / 016 / 待加密的密文 017 / returns 018 public static string MD5Encrypt(string EncryptString) 019 020 if (string.IsNullOrEmpty(EncryptString) throw (new Exception(密文不得為空); 021 M

3、D5 m_ClassMD5 = new MD5CryptoServiceProvider(); 022 string m_strEncrypt = ; 023 try 024 025 m_strEncrypt = BitConverter.ToString(m_ClassMD5.ComputeHash(Encoding.Default.GetBytes(EncryptString).Replace(-, ); 026 027 catch (ArgumentException ex) throw ex; 028 catch (CryptographicException ex) throw ex

4、; 029 catch (Exception ex) throw ex; 030 finally m_ClassMD5.Clear(); 031 return m_strEncrypt; 032 033 / 034 / DES 加密(數(shù)據(jù)加密標準，速度較快，適用于加密大量數(shù)據(jù)的場合) 035 / 036 / 待加密的密文 037 / 加密的密鑰 038 / returns 039 public static string DESEncrypt(string EncryptString, string EncryptKey) 040 041 if (string.IsNullOrEmpty(En

5、cryptString) throw (new Exception(密文不得為空); 042 if (string.IsNullOrEmpty(EncryptKey) throw (new Exception(密鑰不得為空); 043 if (EncryptKey.Length != 8) throw (new Exception(密鑰必需為8位); 044 byte m_btIV = 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF ; 045 string m_strEncrypt = ; 046 DESCryptoServiceProvider

6、 m_DESProvider = new DESCryptoServiceProvider(); 047 try 048 049 byte m_btEncryptString = Encoding.Default.GetBytes(EncryptString); 050 MemoryStream m_stream = new MemoryStream(); 051 CryptoStream m_cstream = new CryptoStream(m_stream, m_DESProvider.CreateEncryptor(Encoding.Default.GetBytes(EncryptK

7、ey), m_btIV), CryptoStreamMode.Write); 052 m_cstream.Write(m_btEncryptString, 0, m_btEncryptString.Length); 053 m_cstream.FlushFinalBlock(); 054 m_strEncrypt = Convert.ToBase64String(m_stream.ToArray(); 055 m_stream.Close(); m_stream.Dispose(); 056 m_cstream.Close(); m_cstream.Dispose(); 057 058 cat

8、ch (IOException ex) throw ex; 059 catch (CryptographicException ex) throw ex; 060 catch (ArgumentException ex) throw ex; 061 catch (Exception ex) throw ex; 062 finally m_DESProvider.Clear(); 063 return m_strEncrypt; 064 065 / 066 / DES 解密(數(shù)據(jù)加密標準，速度較快，適用于加密大量數(shù)據(jù)的場合) 067 / 068 / 待解密的密文 069 / 解密的密鑰 070

9、/ returns 071 public static string DESDecrypt(string DecryptString, string DecryptKey) 072 073 if (string.IsNullOrEmpty(DecryptString) throw (new Exception(密文不得為空); 074 if (string.IsNullOrEmpty(DecryptKey) throw (new Exception(密鑰不得為空); 075 if (DecryptKey.Length != 8) throw (new Exception(密鑰必需為8位); 0

10、76 byte m_btIV = 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF ; 077 string m_strDecrypt = ; 078 DESCryptoServiceProvider m_DESProvider = new DESCryptoServiceProvider(); 079 try 080 081 byte m_btDecryptString = Convert.FromBase64String(DecryptString); 082 MemoryStream m_stream = new MemoryStream();

11、 083 CryptoStream m_cstream = new CryptoStream(m_stream, m_DESProvider.CreateDecryptor(Encoding.Default.GetBytes(DecryptKey), m_btIV), CryptoStreamMode.Write); 084 m_cstream.Write(m_btDecryptString, 0, m_btDecryptString.Length); 085 m_cstream.FlushFinalBlock(); 086 m_strDecrypt = Encoding.Default.Ge

12、tString(m_stream.ToArray(); 087 m_stream.Close(); m_stream.Dispose(); 088 m_cstream.Close(); m_cstream.Dispose(); 089 090 catch (IOException ex) throw ex; 091 catch (CryptographicException ex) throw ex; 092 catch (ArgumentException ex) throw ex; 093 catch (Exception ex) throw ex; 094 finally m_DESPr

13、ovider.Clear(); 095 return m_strDecrypt; 096 097 / 098 / RC2 加密(用變長密鑰對大量數(shù)據(jù)進行加密) 099 / 100 / 待加密密文 101 / 加密密鑰 102 / returns 103 public static string RC2Encrypt(string EncryptString, string EncryptKey) 104 105 if (string.IsNullOrEmpty(EncryptString) throw (new Exception(密文不得為空); 106 if (string.IsNullO

14、rEmpty(EncryptKey) throw (new Exception(密鑰不得為空); 107 if (EncryptKey.Length 5 | EncryptKey.Length 16) throw (new Exception(密鑰必需為5-16位); 108 string m_strEncrypt = ; 109 byte m_btIV = 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF ; 110 RC2CryptoServiceProvider m_RC2Provider = new RC2CryptoServiceProvi

15、der(); 111 try 112 113 byte m_btEncryptString = Encoding.Default.GetBytes(EncryptString); 114 MemoryStream m_stream = new MemoryStream(); 115 CryptoStream m_cstream = new CryptoStream(m_stream, m_RC2Provider.CreateEncryptor(Encoding.Default.GetBytes(EncryptKey), m_btIV), CryptoStreamMode.Write); 116

16、 m_cstream.Write(m_btEncryptString, 0, m_btEncryptString.Length); 117 m_cstream.FlushFinalBlock(); 118 m_strEncrypt = Convert.ToBase64String(m_stream.ToArray(); 119 m_stream.Close(); m_stream.Dispose(); 120 m_cstream.Close(); m_cstream.Dispose(); 121 122 catch (IOException ex) throw ex; 123 catch (C

17、ryptographicException ex) throw ex; 124 catch (ArgumentException ex) throw ex; 125 catch (Exception ex) throw ex; 126 finally m_RC2Provider.Clear(); 127 return m_strEncrypt; 128 129 / 130 / RC2 解密(用變長密鑰對大量數(shù)據(jù)進行加密) 131 / 132 / 待解密密文 133 / 解密密鑰 134 / returns 135 public static string RC2Decrypt(string D

18、ecryptString, string DecryptKey) 136 137 if (string.IsNullOrEmpty(DecryptString) throw (new Exception(密文不得為空); 138 if (string.IsNullOrEmpty(DecryptKey) throw (new Exception(密鑰不得為空); 139 if (DecryptKey.Length 5 | DecryptKey.Length 16) throw (new Exception(密鑰必需為5-16位); 140 byte m_btIV = 0x12, 0x34, 0x

19、56, 0x78, 0x90, 0xAB, 0xCD, 0xEF ; 141 string m_strDecrypt = ; 142 RC2CryptoServiceProvider m_RC2Provider = new RC2CryptoServiceProvider(); 143 try 144 145 byte m_btDecryptString = Convert.FromBase64String(DecryptString); 146 MemoryStream m_stream = new MemoryStream(); 147 CryptoStream m_cstream = n

20、ew CryptoStream(m_stream, m_RC2Provider.CreateDecryptor(Encoding.Default.GetBytes(DecryptKey), m_btIV), CryptoStreamMode.Write); 148 m_cstream.Write(m_btDecryptString, 0, m_btDecryptString.Length); 149 m_cstream.FlushFinalBlock(); 150 m_strDecrypt = Encoding.Default.GetString(m_stream.ToArray(); 151

21、 m_stream.Close(); m_stream.Dispose(); 152 m_cstream.Close(); m_cstream.Dispose(); 153 154 catch (IOException ex) throw ex; 155 catch (CryptographicException ex) throw ex; 156 catch (ArgumentException ex) throw ex; 157 catch (Exception ex) throw ex; 158 finally m_RC2Provider.Clear(); 159 return m_st

22、rDecrypt; 160 161 / 162 / 3DES 加密(基于DES，對一塊數(shù)據(jù)用三個不同的密鑰進行三次加密，強度更高) 163 / 164 / 待加密密文 165 / 密鑰一 166 / 密鑰二 167 / 密鑰三 168 / returns 169 public static string DES3Encrypt(string EncryptString, string EncryptKey1, string EncryptKey2, stringEncryptKey3) 170 171 string m_strEncrypt = ; 172 try 173 174 m_strE

23、ncrypt = DESEncrypt(EncryptString, EncryptKey3); 175 m_strEncrypt = DESEncrypt(m_strEncrypt, EncryptKey2); 176 m_strEncrypt = DESEncrypt(m_strEncrypt, EncryptKey1); 177 178 catch (Exception ex) throw ex; 179 return m_strEncrypt; 180 181 / 182 / 3DES 解密(基于DES，對一塊數(shù)據(jù)用三個不同的密鑰進行三次加密，強度更高) 183 / 184 / 待解密

24、密文 185 / 密鑰一 186 / 密鑰二 187 / 密鑰三 188 / returns 189 public static string DES3Decrypt(string DecryptString, string DecryptKey1, string DecryptKey2, stringDecryptKey3) 190 191 string m_strDecrypt = ; 192 try 193 194 m_strDecrypt = DESDecrypt(DecryptString, DecryptKey1); 195 m_strDecrypt = DESDecrypt(m_

25、strDecrypt, DecryptKey2); 196 m_strDecrypt = DESDecrypt(m_strDecrypt, DecryptKey3); 197 198 catch (Exception ex) throw ex; 199 return m_strDecrypt; 200 201 / 202 / AES 加密(高級加密標準，是下一代的加密算法標準，速度快，平安級別高，目前 AES 標準的一個實現(xiàn)是 Rijndael 算法) 203 / 204 / 待加密密文 205 / 加密密鑰 206 / 207 public static string AESEncrypt(

26、string EncryptString, string EncryptKey) 208 209 if (string.IsNullOrEmpty(EncryptString) throw (new Exception(密文不得為空); 210 if (string.IsNullOrEmpty(EncryptKey) throw (new Exception(密鑰不得為空); 211 string m_strEncrypt = ; 212 byte m_btIV = Convert.FromBase64String(Rkb4jvUy/ye7Cd7k89gQ=); 213 Rijndael m_

27、AESProvider = Rijndael.Create(); 214 try 215 216 byte m_btEncryptString = Encoding.Default.GetBytes(EncryptString); 217 MemoryStream m_stream = new MemoryStream(); 218 CryptoStream m_csstream = new CryptoStream(m_stream, m_AESProvider.CreateEncryptor(Encoding.Default.GetBytes(EncryptKey), m_btIV), C

28、ryptoStreamMode.Write); 219 m_csstream.Write(m_btEncryptString, 0, m_btEncryptString.Length); m_csstream.FlushFinalBlock(); 220 m_strEncrypt = Convert.ToBase64String(m_stream.ToArray(); 221 m_stream.Close(); m_stream.Dispose(); 222 m_csstream.Close(); m_csstream.Dispose(); 223 224 catch (IOException

29、 ex) throw ex; 225 catch (CryptographicException ex) throw ex; 226 catch (ArgumentException ex) throw ex; 227 catch (Exception ex) throw ex; 228 finally m_AESProvider.Clear(); 229 return m_strEncrypt; 230 231 / 232 / AES 解密(高級加密標準，是下一代的加密算法標準，速度快，平安級別高，目前 AES 標準的一個實現(xiàn)是 Rijndael 算法) 233 / 234 / 待解密密文 235 / 解密密鑰 236 / 237 public static string AESDecrypt(string DecryptString, string DecryptKey) 238 239 if (string.IsNullOrEmpty(DecryptString) throw (new Exception(密文不得為空); 240 if (string.IsNullOrE