Decrypting DES using OpenSSL Qt, C++ - c++

Question

I'm writing a new version of program in C++ using Qt library, and want to maintain compatibility with the old version written in C#.
How can I convert this code to C++ / Qt?
DESCryptoServiceProvider dESCryptoServiceProvider = new DESCryptoServiceProvider();
emoryStream stream = new MemoryStream(Convert.FromBase64String(p0));
CryptoStream stream2 = new CryptoStream(stream, dESCryptoServiceProvider.CreateDecryptor(Encoding.ASCII.GetBytes("B5B126C5"),
Encoding.UTF32.GetBytes("0907427F93EC3A3FCFDFEBE3CB55011")), CryptoStreamMode.Read);
StreamReader streamReader = new StreamReader(stream2);
String text = streamReader.ReadToEnd();
My actually Qt/C++ code:
QByteArray encrypted = code.toLatin1();
encrypted = QByteArray::fromBase64(encrypted);
/////////////////////////////////////////////////////////////////////////////////////
DES_cblock key = { 0x9, 0x7, 0x42, 0x7, 0xf9, 0x3e, 0xC3, 0xa3, 0xfC, 0xfd, 0xfe, 0xbe, 0x3c, 0xb5, 0x50, 0x85 };
//this key is too long...
///////////////////////////////////////////////////////////////////////////////////////
DES_cblock iv = { 0xB5, 0xb1, 0x26, 0xc11 };
DES_key_schedule schedule;
unsigned char decrypted[encrypted.size()];
DES_set_odd_parity(&key);
DES_set_key_checked(&key, &schedule);
DES_ncbc_encrypt((unsigned char * )encrypted.constData(), (unsigned char * )decrypted, encrypted.size(), &schedule, &iv, DES_DECRYPT);
unsigned int data_size = 0;
QString text = QByteArray::fromRawData((char * )decrypted, data_size);
When I try to build receive an error:
C:\Project1_Qt\trunk\Core\OldHashDecoder.cpp:1383: error: too many initializers for 'DES_cblock {aka unsigned char [8]}'
Please help
Best regards

Answer 1

You have several issues here ongoing.
It seems that you have a long key as you noted yourself in the comment. You will need to make that shorter.
DES keys are of fixed length as rightfully noted in the comment.
You cannot fix 0xc11 in one byte.
As for the C# code, you pasted, I am not sure. I am not good at that language, but perhaps it may have truncated the length for you silently.