internal static byte[] CreateTripleDES(RSAItems rsaItems, byte[] tripleKey)
{
List <byte> triplePacket = new List <byte>();
triplePacket.AddRange(MessageBuilder.HexToByteArray(GMPDataTags.DT_ENC_KEY));
triplePacket.AddRange(MessageBuilder.AddLength(256));
//tripleKey = Encoding.ASCII.GetBytes("1234567890123456");
triplePacket.AddRange(MessageBuilder.EncryptRSA(rsaItems.Modulus, rsaItems.Exponent, tripleKey));
//KEY VALUE
byte[] arrCheck = new byte[32];
for (int i = 0; i < 32; i++)
{
arrCheck[i] = (byte)0;
}
arrCheck = MessageBuilder.EncryptTriple(arrCheck, arrCheck.Length, tripleKey);
List <byte> chk = new List <byte>();
for (int i = 0; i < 16; i++)
{
chk.Add(arrCheck[i]);
}
triplePacket.AddRange(MessageBuilder.HexToByteArray(GMPDataTags.DT_CHK_VAL));
triplePacket.AddRange(MessageBuilder.AddLength(16));
triplePacket.AddRange(chk.ToArray());
return(triplePacket.ToArray());
}
internal static RSAItems InterpretRSA(byte[] identityBytes)
{
int index = 0;
RSAItems rsaItems = new RSAItems();
rsaItems.DevInfo = new DeviceInfo();
try
{
int len = MessageBuilder.GetLength(identityBytes, index, out index);
int tagLen = 0;
String tagValStr = "";
while (true)
{
if (index > (len - GMPConstants.LEN_DATA_TAG))
{
break;
}
//get next tag
int tag = MessageBuilder.GetTag(identityBytes, index, out index);
int tagVal = 0;
switch (tag)
{
case GMPCommonTags.TAG_SEQUNCE:
tagLen = MessageBuilder.GetLength(identityBytes, index, out index);
tagVal = MessageBuilder.ConvertBcdToInt(identityBytes, index, tagLen);
index += tagLen;
rsaItems.SeqNumber = tagVal;
break;
case GMPDataTags.DT_MOD_KEY:
tagLen = MessageBuilder.GetLength(identityBytes, index, out index);
rsaItems.Modulus = MessageBuilder.GetBytesFromOffset(identityBytes, index, tagLen);
index += tagLen;
break;
case GMPDataTags.DT_EXP_KEY:
tagLen = MessageBuilder.GetLength(identityBytes, index, out index);
rsaItems.Exponent = MessageBuilder.GetBytesFromOffset(identityBytes, index, tagLen);
index += tagLen;
break;
case GMPDataTags.DT_ECR_BRAND:
tagLen = MessageBuilder.GetLength(identityBytes, index, out index);
tagValStr = MessageBuilder.ByteArrayToString(identityBytes, index, tagLen);
index += tagLen;
rsaItems.DevInfo.DevBrand = tagValStr;
break;
case GMPDataTags.DT_ECR_MODEL:
tagLen = MessageBuilder.GetLength(identityBytes, index, out index);
tagValStr = MessageBuilder.ByteArrayToString(identityBytes, index, tagLen);
index += tagLen;
rsaItems.DevInfo.DevModel = tagValStr;
break;
case GMPCommonTags.TAG_RESP_CODE:
tagLen = MessageBuilder.GetLength(identityBytes, index, out index);
tagValStr = MessageBuilder.ByteArrayToString(identityBytes, index, tagLen);
index += tagLen;
if (!tagValStr.Equals(GMPResCodes.SUCCESS))
{
throw new Exception("İşlem başarısız");
}
break;
case GMPDataTags.DT_ECR_SERIAL:
tagLen = MessageBuilder.GetLength(identityBytes, index, out index);
tagValStr = MessageBuilder.ByteArrayToString(identityBytes, index, tagLen);
index += tagLen;
rsaItems.DevInfo.TerminalNo = tagValStr;
break;
default:
tagLen = MessageBuilder.GetLength(identityBytes, index, out index);
index += tagLen;
break;
}
}
}
catch { rsaItems.SeqNumber = -1; }
//if no response code
//rsaItems.SeqNumber = -1;
return(rsaItems);
}