C# - Rijndael文件加密类

using System;using System.Security.Cryptography;using System.IO; public class Rijndael {  //data members  private string m_InFileName;  private string m_OutFileName;  private byte[] m_Key = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,           0x07, 0xa8, 0x09, 0x10, 0x11, 0x12, 0x13,            0x14, 0xde, 0x16 };  private byte[] m_Vector = { 0x01, 0x02, 0x03, 0x04, 0x0b, 0x54,           0x07, 0x08, 0x09, 0x10, 0xf1, 0x12, 0x13,            0x14, 0x15, 0xff };  //properties  public string InFileName  {   get{return m_InFileName;}   set{m_InFileName = value;}  }  public string OutFileName  {   get{return m_OutFileName;}   set{m_OutFileName = value;}  }  public byte[] Key  {   get{return m_Key;}   set{m_Key = value;}  }  public byte[] Vector  {   get{return m_Vector;}   set{m_Vector = value;}  }  //ctor  public Rijndael()  {   m_InFileName="";   m_OutFileName="";  }  public Rijndael(string infile,string outfile)  {   m_InFileName=infile;   m_OutFileName=outfile;  }

  //interface methods  public void Encrypt()  {   if (m_InFileName != "" && m_OutFileName != "")   {    try    {     RijndaelManaged rm;     rm = new RijndaelManaged();     FileStream src = new FileStream(m_InFileName, FileMode.Open);     ICryptoTransform encoder = rm.CreateEncryptor(m_Key, m_Vector); //定义基本的加密转换运算。     CryptoStream str = new CryptoStream(src, encoder, CryptoStreamMode.Read);     FileStream outFile = new FileStream(m_OutFileName, FileMode.Create);     int i = 0;     while ((i = str.ReadByte()) != -1) //转换为 int 的字节，或者如果从流的末尾读取则为 -1。      {      outFile.WriteByte((byte)i);     }     src.Close();     outFile.Close();    }    catch (Exception)    {    }   }  }

  public void Decrypt()  {   if (m_InFileName != "" && m_OutFileName != "")   {    try    {     RijndaelManaged rm;     rm = new RijndaelManaged();     FileStream src = new FileStream(m_InFileName, FileMode.Open);     ICryptoTransform decoder = rm.CreateDecryptor(m_Key, m_Vector);     CryptoStream str = new CryptoStream(src, decoder, CryptoStreamMode.Read);     FileStream outFile = new FileStream(m_OutFileName, FileMode.Create);     int i = 0;     while ((i = str.ReadByte()) != -1)     {      outFile.WriteByte((byte)i);     }     src.Close();     outFile.Close();    }    catch (Exception)    {    }   }  } }