/// <summary>
/// INI RDH
/// </summary>
public static bool Init_INI_RDH(int BLZ, string URL, int Port, int HBCIVersion, string UserID, string FilePath, string Password)
{
Log.Write("Starting Synchronisation");
try
{
string segments;
// Get public keys from bank
if (HBCIVersion == 300)
{
string segments_ = "HKIDN:" + SEGNUM.SETVal(2) + ":2+" + SEG_Country.Germany + ":" + BLZ + "+" + "9999999999" + "+0+0'" +
"HKVVB:" + SEGNUM.SETVal(3) + ":3+11+0+1+" + Program.Buildname + "+" + Program.Version + "'";
segments = segments_;
if (DEBUG.Enabled)
{
DEBUG.Write("INI message: " + segments);
}
if (Helper.Parse_Segment_RDH_Key(RDHMessage.Send(URL, Port, RDHMessageAnonymous.Create(HBCIVersion,
MSG.SETVal(1), DLG.SETVal(0), BLZ, segments)), BLZ, UserID))
{
// Sync OK
Log.Write("Synchronisation ok");
if (RDHKEY.OpenFromFile(FilePath, Password))
{
segments_ = "HKIDN:" + SEGNUM.SETVal(3) + ":2+" + SEG_Country.Germany + ":" + BLZ + "+" + UserID + "+0+1'" +
"HKSAK:" + SEGNUM.SETVal(4) + ":3+2+112+" + RDH_Profile.RDHPROFILE + "+" + SEG_Country.Germany +
":" + BLZ + ":" + UserID + ":" + Keytype.Enc + ":" + RDH_Profile.Version + ":1+5:2:10:@" + RDH_KEYSTORE.KEY_ENCRYPTION_PRIVATE.Length + "@" +
RDH_KEYSTORE.KEY_ENCRYPTION_PRIVATE + ":12:@3@" + Converter.FromHexString("01 00 01") + ":13'" +
"HKSAK:" + SEGNUM.SETVal(5) + ":3+2+112+" + RDH_Profile.RDHPROFILE + "+" + SEG_Country.Germany +
":" + BLZ + ":" + UserID + ":" + Keytype.Sig + ":" + RDH_Profile.Version + ":1+6:19:10:@" + RDH_KEYSTORE.KEY_SIGNING_PRIVATE.Length + "@" +
RDH_KEYSTORE.KEY_SIGNING_PRIVATE + ":12:@3@" + Converter.FromHexString("01 00 01") + ":13'";
segments = segments_;
if (DEBUG.Enabled)
{
DEBUG.Write("Key exchange message: " + segments);
}
RDHMessage.Send(URL, Port, RDHMessage.Create(HBCIVersion, MSG.SETVal(1), DLG.SETVal(0), BLZ, UserID, SYS.SETVal(0),
segments, SEGNUM.SETInt(5)));
// INI OK
Log.Write("INI ok");
return(true);
}
else
{
Log.Write("INI failed");
return(false);
}
}
else
{
UserID = string.Empty;
Log.Write("Initialisation failed");
throw new Exception(HBCI_Exception.INI());
}
}
else
{
Log.Write("HBCI version not supported");
throw new Exception(HBCI_Exception.HBCIVERSIONNOTSUPPORTED());
}
}
catch (Exception ex)
{
UserID = string.Empty;
Log.Write(ex.ToString());
if (DEBUG.Enabled)
{
DEBUG.Write("Software error: " + ex.ToString());
}
// Exception
if (!DEBUG.Enabled)
{
throw new Exception(HBCI_Exception.SOFTWARE() + ex.ToString());
}
else
{
return(false);
}
}
}
/// <summary>
/// Encrpyt DES3 key
/// </summary>
/// <param name="Key"></param>
/// <returns></returns>
static byte[] encryptKey(byte[] Key)
{
sessionKey = InitDES3Key();
if (DEBUG.Enabled)
{
DEBUG.Write("Public key length: " + Key.Length);
}
var Exponent = new byte[] { 1, 0, 1 };
var key = Encoding.GetEncoding("iso8859-1").GetBytes(RDH_KEYSTORE.KEY_ENCRYPTION_PUBLIC_BANK);
BigInteger n = new BigInteger(key);
int cryptDataSize = n.BitLength;
byte[] plainText = new byte[cryptDataSize];
Array.Copy(sessionKey, 0, plainText, plainText.Length - 16, 16);
BigInteger m = new BigInteger(plainText);
BigInteger ex = new BigInteger(Exponent);
BigInteger mo = new BigInteger(+1, key);
var v = m.ModPow(ex, mo);
byte[] result = v.ToByteArray();
if (DEBUG.Enabled)
{
DEBUG.Write("Encrypted session key: " + Converter.ByteArrayToString(result));
}
if (DEBUG.Enabled)
{
DEBUG.Write("Encrypted session key length: " + result.Length);
}
// Check for encrypted session key size
var cryptLength = HBCI_Util.checkForCryptSize(RDH_KEYSTORE.KEY_ENCRYPTION_PUBLIC_BANK.Length, result.Length);
if (DEBUG.Enabled)
{
DEBUG.Write("Crypted session key length is valid: " + cryptLength.ToString());
}
if (Trace.Enabled)
{
Trace.Write("Session key length: " + result.Length);
}
// Throw exception when size is not valid
if (!cryptLength)
{
throw new Exception(HBCI_Exception.CRYPTEDLENGTH());
}
return(result);
}
