Decrypting with blowfish.

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C++

Hi,
I am creating a wrapper class in MFC to encrypt and decrypt CString object in MFC using blowfish(Ref: )
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My code is as follows.

CString MyClass::Encryption(CString strPlainText)

{

int nLen = strPlainText.GetLength() + 1;

	if(strPlainText.IsEmpty())
	return CString();

	CString strCipher;

	char* cPlain = new char[nLen];
	char* cPlain2 = new char[nLen];
	char* cCipher = new char[nLen];
	char* cResult = new char[nLen];
	
	memset(cPlain, 0, nLen); //fill with 0s
  memset(cPlain2, 0, nLen); // fill with 0s.
   memset(cCipher, 0, nLen); // fill with 0s.
   memset(cResult, 0, nLen); // fill with 0s.

   char szHex[17];
	szHex[16] = 0;
	unsigned char aucCipherText[8];

	int i= 0;

	for(i = 0; i<nLen-1; i++)
	{
		cPlain2[i] = (char) strPlainText.GetAt(i);		
	}
	cPlain2[nLen-1] = '\0';

	strcpy(cPlain, cPlain2);//copy to datain,

	ofstream out("out.txt",ios::trunc);

	CBlowFish oBlowFish((unsigned char*)"1234567890123456", 16);
  oBlowFish.Encrypt((unsigned char*)cPlain, 
	  (unsigned char*)aucCipherText, 8, CBlowFish::ECB);

  out<<"Encrypt  :"<<cPlain << "  :To :" << aucCipherText<<endl;

  	CharStr2HexStr(aucCipherText, szHex, 8);
		out << "Encrypted hex:" << szHex << endl;

		CString str(szHex,17);

		return str;

}

This Works and i Get a result like: 895F8DB1D73F9415 .

Now i have another function to decryt my result back to original string, and thats where i have a litle bit of a problem.
What could be wrong ? Am only getting 8 characters decrypted.

CString CMyClass::Decrypt(CString strCipher,  int nFinalLen)
{
	char szHex[17];
	ofstream out("out2.txt", ios::trunc);

	for(int i=0; i<strCipher.GetLength() && i<17; i++)
		szHex[i] = (char)strCipher.GetAt(i);

	out<<"Decrypting : hex, " << szHex<<endl;

	unsigned char aucCipherText[8];

	HexStr2CharStr(szHex, aucCipherText,8);
	
	char* sz = new char[nFinalLen];
	memset(sz,0, nFinalLen);

		out<<"Convert hex to char: "<<aucCipherText<<endl;	
//This gives me the original character format,

		//const char plain[8];
		CBlowFish oBlowFish((unsigned char*)"1234567890123456", 16);
		oBlowFish.Decrypt(aucCipherText,(unsigned char*) sz,8);
		out<<"Decrypted text: "<<sz<<endl;

		
		CString str(sz, nFinalLen);

		delete [] sz;

		return str;

///////////////////////////////////////////////////////////
//Bearing in mind this works.

unsigned char aucKey[8];
	unsigned char aucPlainText[12];
	char szHex[17];
	szHex[16] = 0;
	unsigned char aucCipherText[8];
	ofstream out("out.txt", ios::trunc);
	
		
		
	
		 char sz[12] = "Mynameiskin";
		strcpy((char*) aucPlainText, (const char*) sz);
		
			out << "Pain text :" << aucPlainText <<endl;


		CBlowFish oBlowFish("09090909", 8);
		oBlowFish.Encrypt(aucPlainText, aucCipherText, 8);
		out << "Encrypted text:" << aucCipherText <<endl;

		CharStr2HexStr(aucCipherText, szHex, 8);
		out << "Encrypted hex:" << szHex << endl;

		out<<"Decrypting NOW: "<<endl;	
		
		HexStr2CharStr(szHex, aucCipherText,8);
		out<<"Convert hex to char: "<<aucCipherText<<endl;	
		//const char plain[8];
		oBlowFish.Decrypt(aucCipherText,(unsigned char*) sz,8);
		out<<"Decrypted text: "<<sz<<endl;

My problem is that my decrypt function only decrypts 8 characters.
The nFinalLen argument has the size of the original string (expected plain text).
Thank you in advance