public static string GetConnectionString()
{
string str = "";
Aes.KeySize keysize;
keysize = Aes.KeySize.Bits128;
byte[] cipherText = new byte[16];
byte[] decipheredText = new byte[16];
FileInfo inf = new FileInfo(AppDomain.CurrentDomain.BaseDirectory + "settings.dat");
if (inf.Exists)
{
StreamReader reader = inf.OpenText();
gConnectionParam.setServer(reader.ReadLine());
gConnectionParam.setUserName(reader.ReadLine());
//base.Server = reader.ReadLine();
//base.UserName = reader.ReadLine();
cipherText = Encoding.Unicode.GetBytes(reader.ReadLine());
AesLib.Aes a = new Aes(keysize, new byte[16]);
a.InvCipher(cipherText, decipheredText);
//Password = Encoding.Unicode.GetString(decipheredText);
gConnectionParam.setPassword(Encoding.Unicode.GetString(decipheredText));
//base.Database = reader.ReadLine();
gConnectionParam.setDatabase(reader.ReadLine());
// Fix error : error for There is already an open DataReader associated with this Command which must be closed first ("MultipleActiveResultSets=True;")
str = gConnectionParam.getConnString();
}
return str;
}
static void Main(string[] args)
{
byte[] plainText = new byte[] {0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77,
0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff};
byte[] cipherText = new byte[16];
byte[] decipheredText = new byte[16];
byte[] keyBytes = new byte[] {0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17};
Aes a = new Aes(Aes.KeySize.Bits128, keyBytes);
Console.WriteLine("\nAdvanced Encryption Standard Demo in .NET");
Console.WriteLine("\nThe plaintext is: ");
DisplayAsBytes(plainText);
Console.WriteLine("\nUsing a " + Aes.KeySize.Bits192.ToString() + "-key of: ");
DisplayAsBytes(keyBytes);
a.Cipher(plainText, cipherText);
Console.WriteLine("\nThe resulting ciphertext is: ");
DisplayAsBytes(cipherText);
a.InvCipher(cipherText, decipheredText);
Console.WriteLine("\nAfter deciphering the ciphertext, the result is: ");
DisplayAsBytes(decipheredText);
Console.WriteLine("\nDone");
Console.ReadLine();
}
private void saveSettings()
{
try
{
dcSQL.Server = txtServerName.Text;
dcSQL.Database = cbDatabaseName.Text;
if (rbNTSecurity.Checked)
{
dcSQL.SecurityType = DatabaseConfiguration.WINDOWS_NT_SECURITY;
}
else if (rbSQLSecurity.Checked)
{
dcSQL.UserId = txtUserId.Text;
dcSQL.Password = txtPassword.Text;
dcSQL.SecurityType = DatabaseConfiguration.SQLSERVER_SECURITY;
}
dcSQL.TestConnection();
if (dcSQL.Connected)
{
keysize = Aes.KeySize.Bits128;
byte[] plainText = new byte[16];
byte[] cipherText = new byte[16];
plainText = Encoding.Unicode.GetBytes(txtPassword.Text.PadRight(8, ' '));
AesLib.Aes a = new Aes(keysize, new byte[16]);
a.Cipher(plainText, cipherText);
string passasc = Encoding.Unicode.GetString(cipherText);
if (File.Exists(AppDomain.CurrentDomain.BaseDirectory + "settings.dat"))
File.Delete(AppDomain.CurrentDomain.BaseDirectory + "settings.dat");
FileInfo inf = new FileInfo(AppDomain.CurrentDomain.BaseDirectory + "settings.dat");
StreamWriter writer = inf.CreateText();
writer.WriteLine(txtServerName.Text);
writer.WriteLine(txtUserId.Text);
writer.WriteLine(passasc);
writer.WriteLine(cbDatabaseName.Text);
ExMessageBox.Show("Đã lưu", "Thông tin", ExMessageBox.CYButtons.OK, ExMessageBox.CYIcon.Information);
writer.Close();
}//if
else
{
ExMessageBox.Show("Kết nối không thành công. Vui lòng kiểm tra lại các thông số kết nối!", "Thông tin", ExMessageBox.CYButtons.OK, ExMessageBox.CYIcon.Error);
}
}
catch(AppException ex)
{
String strMessage =ex.Message;
}
}
static void Main(string[] args)
{
// Starting with a console application
string originalText = "";
string key = "";
Console.WriteLine("Choose Encrypt/Decrypt - 1/2");
int mode = int.Parse(Console.ReadLine());
if (mode == 1)
{
Console.WriteLine("Enter text to encrypt");
originalText = Console.ReadLine();
Console.WriteLine("Enter the secret key");
key = Console.ReadLine();
byte[] plainText = new byte[16];
byte[] keybytes = new byte[16];
byte[] cipherText = new byte[16];
byte[] decryptedBytes = new byte[16];
plainText = Encoding.UTF8.GetBytes(originalText);
keybytes = Encoding.UTF8.GetBytes(key);
AesLib.Aes a = new AesLib.Aes(AesLib.Aes.KeySize.Bits192, keybytes);
byte[] enciphered = a.AESEncryptPadding(originalText);
a.Dump();
Console.WriteLine("With AES LIB " + a.VisualizeInMonkey(enciphered));
Console.WriteLine("With AES LIB " + a.VisualizeInHex(enciphered));
byte[] verified = ManagedAesSample.EncryptAesManaged(originalText, keybytes);
Console.WriteLine("With AES INTERNAL " + a.VisualizeInMonkey(verified));
Console.WriteLine("With AES INTERNAL " + a.VisualizeInHex(verified));
Console.ReadKey();
AesLib.Aes b = new AesLib.Aes(AesLib.Aes.KeySize.Bits192, keybytes);
byte[] deciphered = b.Decrypt(enciphered);
Console.WriteLine("Decyphered: " + Encoding.UTF8.GetString(deciphered));
//a.Decrypt(cipherText, decryptedBytes);
//a.Dump();
//string decryption_hex = string.Join(" ", plainText.Select(x => x.ToString("X2")));
//string decryption_clear = string.Join(" ", decryptedBytes.Select(x => x.ToString("X2")));
//Console.WriteLine($"Decrypted in hex: {decryption_hex}");
//Console.WriteLine($"Decrypted in plain text: {Encoding.UTF8.GetString(decryptedBytes)}");
}
else
{
Console.WriteLine("Not implemented yet");
}
}
public override string BuildConnectionString(ConnectionParam pconparam)
{
// with OdbcConnectionString la` 1 trong cac chuoi~ duoi day
// @"Driver={SQL Server};Server=.;Trusted_Connection=yes;Database=pubs;"; // --> ket noi csdl SQL bang che do authentication cua windows
// @"Driver={SQL Server};server=.;uid=sa;pwd=12345;database=pubs;"; // --> ket noi csdl SQL bang che do username va password cua SQL
// @"Driver={Microsoft ODBC for Oracle};Server=ORACLE8i7;Persist Security Info=False;Trusted_Connection=yes"
// @"Driver={Microsoft Access Driver (*.mdb)};DBQ=c:\bin\nwind.mdb"
// @"Driver={Microsoft Excel Driver (*.xls)};DBQ=c:\bin\book1.xls"
// @"Driver={Microsoft Text Driver (*.txt; *.csv)};DBQ=c:\bin"
// @"DSN= dsnname" ==>voi dsnname duoc cau hinh nhu sau : vao administrator Tools/Data Sources (ODBC)->chon tab System (DSN) ->bam nut Add -> chon driver do Microsoft Access(*.mdb)->o muc Data Source Name danh ten DSN bat ky(dsnname) ,vi du la odbcTest->nhan nut Select de chon database Access,vi du D:\test.mdb ->bam nut ok de ket thuc
if (DbType == "ODBC_SQL")
{
keysize = Aes.KeySize.Bits128;
byte[] cipherText = new byte[16];
byte[] decipheredText = new byte[16];
FileInfo inf = new FileInfo(AppDomain.CurrentDomain.BaseDirectory + "settingsODBC_SQL.dat");
if (inf.Exists)
{
StreamReader reader = inf.OpenText();
//base.Server = reader.ReadLine();
pconparam.setServer(reader.ReadLine());
//base.UserName = reader.ReadLine();
pconparam.setUserName(reader.ReadLine());
cipherText = Encoding.Unicode.GetBytes(reader.ReadLine());
AesLib.Aes a = new Aes(keysize, new byte[16]);
a.InvCipher(cipherText, decipheredText);
//Password = Encoding.Unicode.GetString(decipheredText);
pconparam.setPassword(Encoding.Unicode.GetString(decipheredText));
//base.Database = reader.ReadLine();
pconparam.setDatabase(reader.ReadLine());
strconn = reader.ReadLine();
if (strconn == "sa")
{
//string OdbcConnectionString = @"Driver={SQL Server};server=.;uid=sa;pwd=12345;database=pubs;"; // --> ket noi csdl SQL bang che do username va password cua SQL
//strconn = @"Driver={SQL Server};server="+ base.Server + ";uid="+base.UserName +";pwd="+base.Password +";database=" + base.Database;
strconn = @"Driver={SQL Server}" + ";Connect Timeout=60" + ";MultipleActiveResultSets=True; server=" + pconparam.getServer() + ";uid=" + pconparam.getUserName() + ";pwd=" + pconparam.getPassword() + ";database=" + pconparam.getDatabase();
}
else if (strconn == "rbNTSecurity")
{
//string OdbcConnectionString = @"Driver={SQL Server};Server=.;Trusted_Connection=yes;Database=pubs;"; // --> ket noi csdl SQL bang che do authentication cua windows
//strconn = @"Driver={SQL Server};Server=" + base.Server + ";Trusted_Connection=yes;database="+base.Database;
strconn = @"Driver={SQL Server}" + ";Connect Timeout=60" + ";MultipleActiveResultSets=True; Server=" + pconparam.getServer() + ";Trusted_Connection=yes;database=" + pconparam.getDatabase();
}
reader.Close();
}
else
{
StreamWriter writer = inf.CreateText();
writer.Close();
}
base.ConnectionString = strconn;
}
else if (DbType == "ODBC_Access")
{
keysize = Aes.KeySize.Bits128;
byte[] cipherText = new byte[16];
byte[] decipheredText = new byte[16];
FileInfo inf = new FileInfo(AppDomain.CurrentDomain.BaseDirectory + "settingsOLEDB_Access.dat");
if (inf.Exists)
{
StreamReader reader = inf.OpenText();
//base.Server = reader.ReadLine();
pconparam.setServer(reader.ReadLine());
//base.UserName = reader.ReadLine();
pconparam.setUserName(reader.ReadLine());
cipherText = Encoding.Unicode.GetBytes(reader.ReadLine());
AesLib.Aes a = new Aes(keysize, new byte[16]);
a.InvCipher(cipherText, decipheredText);
//Password = Encoding.Unicode.GetString(decipheredText);
pconparam.setPassword(Encoding.Unicode.GetString(decipheredText));
//base.Database = reader.ReadLine();
pconparam.setDatabase(reader.ReadLine());
strconn = reader.ReadLine();
string accessDBpath = pconparam.getDatabase(); //duong dan chua file csdl Access
//set duong` dan cho file csdl Access neu no ko nam` trong thu muc ung dung \bin\Debug
//hoac string OdbcConnectionString = @"Driver={Microsoft Access Driver (*.mdb)};DBQ=D:\test.mdb";
strconn = @"Driver={Microsoft Access Driver (*.mdb)};DBQ=" + accessDBpath;
//example 1 : accessDBpath = test.mdb (neu file test.mdb nam` trong thu muc bin\Debug cua ung dung)
//example 2 : accessDBpath = D:\test.mdb trong truong` hop nay` phai set duong dan den file access de ung dung co the truy cap vao file access
reader.Close();
}
else
{
StreamWriter writer = inf.CreateText();
writer.Close();
}
base.ConnectionString = strconn;
}
else if (DbType == "ODBC_Oracle")
{
//@"Driver={Microsoft ODBC for Oracle};Server=ORACLE8i7;Persist Security Info=False;Trusted_Connection=yes"
//code later
}
else if (DbType == "ODBC_Excel")
{
//@"Driver={Microsoft Excel Driver (*.xls)};DBQ=c:\bin\book1.xls"
//code later
}
else if (DbType == "ODBC_TextFile")
{
//@"Driver={Microsoft Text Driver (*.txt; *.csv)};DBQ=c:\bin"
//code later
}
else if (DbType == "ODBC_DSN")
{
string DSN_ODBC_ACCESS = "tenDSN"; //ten DSN
keysize = Aes.KeySize.Bits128;
byte[] cipherText = new byte[16];
byte[] decipheredText = new byte[16];
FileInfo inf = new FileInfo(AppDomain.CurrentDomain.BaseDirectory + "settingsOLEDB_DSN.dat");
if (inf.Exists)
{
StreamReader reader = inf.OpenText();
//base.Server = reader.ReadLine(); //ko dung`
//base.UserName = reader.ReadLine(); //ko dung`
cipherText = Encoding.Unicode.GetBytes(reader.ReadLine());
AesLib.Aes a = new Aes(keysize, new byte[16]);
a.InvCipher(cipherText, decipheredText);
//Password = Encoding.Unicode.GetString(decipheredText);
DSN_ODBC_ACCESS = Encoding.Unicode.GetString(decipheredText);
//base.Database = reader.ReadLine();
//strconn = reader.ReadLine();
//hoac string OdbcConnectionString = @"DSN=tenDSN";
strconn = @"DSN=" + DSN_ODBC_ACCESS;
reader.Close();
}
else
{
StreamWriter writer = inf.CreateText();
writer.Close();
}
base.ConnectionString = strconn;
//@"DSN= dsnname" ==>voi dsnname duoc cau hinh nhu sau :
//vao administrator Tools/Data Sources (ODBC)->chon tab System (DSN) ->bam nut Add -> chon driver do Microsoft Access(*.mdb)
//->o muc Data Source Name danh ten DSN bat ky(dsnname) ,vi du la odbcTest
//->nhan nut Select de chon database Access,vi du D:\test.mdb ->bam nut ok de ket thuc
//code later
}
else throw new Exception("Invalid database type");
return base.ConnectionString;
}