DOTNETc#之加密解密(对称)

//创建解密流

CryptoStream cryptoStream = new CryptoStream(fsSaveFileName,trans,CryptoStreamMode.Write);

//解密前的文件流

FileStream fsOpenFileName = new FileStream(this.tboxOpenFileName.Text,FileMode.Open,FileAccess.Read);

//读取解密前的文件

byte[] b = new byte[fsOpenFileName.Length];

fsOpenFileName.Read(b,0,b.Length);

//写入到解密流中

cryptoStream.Write(b,0,b.Length);

//关闭流密流

cryptoStream.Close();

//关闭文件流

fsOpenFileName.Close();

fsSaveFileName.Close();

}

}

}

}