Hi,
I am trying to generate a Dynamic CVC(Card Verification Code) number for a digital Card using 3DES algorithm. To generate the CVC i need to use a standard key and encrypt a data like
[0D 14 00 00 08 99 00 5E] sample data(8 byte).
Can anybody post a sample code on how to encrypt it as ASAP.
Post my sample code.
::Encrypt(CString Key, CString Data, CString *Cryptogram)
{
int rc,len,copied=0;
int nTemp = -1;
nTemp = cryptInit();
char unsigned Buffer[1000];
memset(Buffer,0x00,1000);
memcpy(Buffer,(LPCTSTR)Data,Data.GetLength());
len = (int)strlen((char *)Buffer);
CRYPT_ENVELOPE cryptEnvelope;
rc=cryptCreateEnvelope( &cryptEnvelope, CRYPT_UNUSED, CRYPT_FORMAT_CRYPTLIB );
rc=cryptSetAttribute( cryptEnvelope, CRYPT_OPTION_ENCR_ALGO,CRYPT_ALGO_3DES);
cryptSetAttribute( cryptEnvelope, CRYPT_ATTRIBUTE_BUFFERSIZE, 90000L );
cryptSetAttributeString( cryptEnvelope, CRYPT_ENVINFO_PASSWORD, Key.LockBuffer(), Key.GetLength());
rc=cryptSetAttribute( cryptEnvelope, CRYPT_ENVINFO_DATASIZE, Data.GetLength());
rc=cryptPushData( cryptEnvelope, Buffer, len, &copied );
rc=cryptFlushData( cryptEnvelope);
memset(Buffer,0x00,1000);
cryptPopData( cryptEnvelope, Buffer, 1000, &copied);
*Cryptogram=ByteToHexString(&Buffer[0],copied);
cryptDestroyEnvelope( cryptEnvelope );
Key.ReleaseBuffer();
Anil
