加密解密常用函数.docx

2、DESKey);      }      publicstringDESEncrypt(stringstrSource,byte[]key)      {        SymmetricAlgorithmsa=Rijndael.Create();        sa.Key=key;        sa.Mode=CipherMode.ECB;        sa.Padding=PaddingMode.Zeros;        MemoryStreamms=newMemoryStream();        CryptoStreamcs=newCryptoStream(ms,sa.

3、CreateEncryptor(),CryptoStreamMode.Write);        byte[]byt=Encoding.Unicode.GetBytes(strSource);        cs.Write(byt,0,byt.Length);        cs.FlushFinalBlock();        cs.Close();        returnConvert.ToBase64String(ms.ToArray());      }      ///

4、/待解密的字串      ///32位Key值      ///解密后的字符串      publicstringDESDecrypt(stringstrSource)      {        returnDESDecrypt(strSource,DESKey);      }      publicstringDESDecrypt(stringstrSource,byte[]key)      {        SymmetricAl

5、gorithmsa=Rijndael.Create();        sa.Key=key;        sa.Mode=CipherMode.ECB;        sa.Padding=PaddingMode.Zeros;        ICryptoTransformct=sa.CreateDecryptor();        byte[]byt=Convert.FromBase64String(strSource);        MemoryStreamms=newMemoryStream(byt);        CryptoStreamcs=newCryptoStre

6、am(ms,ct,CryptoStreamMode.Read);        StreamReadersr=newStreamReader(cs,Encoding.Unicode);        returnsr.ReadToEnd();      }      #endregion      #region一个用hash实现的加密解密方法      ///