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I am stuck actually, im trying to write a md5 / blowfish function
im not sure if i am correctly converting the MD5[16] buffer into a unsigned long[4]
this doesnt really make too much sense too me
typedef struct _tag2Long {
unsigned long _1;
unsigned long _2;
unsigned long _3;
unsigned long _4;
} _2LONG;
void SignBuffer(unsigned char *pbzKey, unsigned char *pbzBuffer,
unsigned int iSize, unsigned long pSignature[4])
{
MD5_CTX md5;
BLOWFISH_CTX bf;
MD5Init(&md5);
MD5Update(&md5, pbzBuffer, iSize);
MD5Final(&md5);
_2LONG *tl = (_2LONG*) md5.digest;
printf("BLE 1\t\t %x %x %x %x\n", tl->_1, tl->_2, tl->_3, tl->_4);
Blowfish_Init(&bf, pbzKey, 16);
Blowfish_Encrypt(&bf, &tl->_1, &tl->_2);
Blowfish_Encrypt(&bf, &tl->_3, &tl->_4);
pSignature[0] = tl->_1;
pSignature[1] = tl->_2;
pSignature[2] = tl->_3;
pSignature[3] = tl->_4;
printf("BLE 2\t\t %x %x %x %x\n", pSignature[0], pSignature[1],
pSignature[2], pSignature[3]);
}
bool VerifyBuffer(unsigned char *pbzKey, unsigned char *pSignature,
unsigned int iSize, unsigned long pBuffer[4])
{
BLOWFISH_CTX bf;
MD5_CTX md5;
bool bResult = false;
printf("BLD 1\t\t %x %x %x %x\n", pBuffer[0], pBuffer[1],
pBuffer[2], pBuffer[3]);
Blowfish_Init(&bf, pbzKey, 16);
Blowfish_Decrypt(&bf, &pBuffer[0], &pBuffer[1]);
Blowfish_Decrypt(&bf, &pBuffer[2], &pBuffer[3]);
printf("BLD 2\t\t %x %x %x %x\n", pBuffer[0], pBuffer[1],
pBuffer[2], pBuffer[3]);
MD5Init(&md5);
MD5Update(&md5, pSignature, iSize);
MD5Final(&md5);
_2LONG *tl = (_2LONG*) md5.digest;
if (tl->_1 == pBuffer[0] && tl->_2 == pBuffer[1] &&
tl->_3 == pBuffer[2] && tl->_4 == pBuffer[4])
bResult = true;
return bResult;
}
void main(void)
{
unsigned char bszBuffer[2] = {'A', 'B'};
unsigned long ulSig[4];
SignBuffer((unsigned char*)"key", bszBuffer, 2, ulSig);
printf("\n");
if (VerifyBuffer((unsigned char*)"key", bszBuffer, 2, ulSig))
printf("\nok");
else printf("\nerr");
}
and this is the output of them
BLE 1 b0c66fb8 733df651 4c2d26de a9a0e334
BLE 2 f12b0ed9 782fae18 a87960ac f37b342e
BLD 1 f12b0ed9 782fae18 a87960ac f37b342e
BLD 2 dc95818a 65685d43 8d7d54b9 8827b217
err
modified on Friday, July 16, 2010 3:32 PM
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the conversion looks fine.
but doesn't Blowfish use 64-bit (8-byte) blocks ?
so this Blowfish_Encrypt(&bf, &tl->_1, &tl->_2); will encrypt the 8 bytes starting at tl->_1 ? since _1 is only four bytes, it's going to run over into _2.
so, you're doing BF(_1 + _2) -> _2 + _3.
or maybe not. i don't know what Blowfish_Encrypt looks like.
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ah, ok. it's expecting 2 32-bit parts. i thought the params were input and output.
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do you happen to know how i can fix it? i am lost
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you're doing this, right:
Sign:
Sig = BFE(MD5(data))
Verify:
X = BFD(Sig)
Sig2 = MD5(Sig)
Compare:
X == Sig2 ?
but shouldn't that bold line be Sig2 = MD5(data) ? the MD5 of the signature doesn't get you anything.
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i fixed it, thank you very much for your help, i noticed
if (tl->_1 == pBuffer[0] && tl->_2 == pBuffer[1] &&
tl->_3 == pBuffer[2] && tl->_4 == pBuffer[4])
bResult = true;
pBuffer[4] should of been pBuffer[3] i was going out of range of the array which didnt exist
here is the updated code
int _ustrlen(unsigned char *pbz)
{
const unsigned char *ptr;
for (ptr = pbz; *ptr; ++ptr);
return (ptr - pbz);
}
void SignBuffer(unsigned char *pbzKey, unsigned char *pbzBuffer,
unsigned int iSize, unsigned long *pSignature)
{
MD5_CTX md5, md5key;
BLOWFISH_CTX bf;
MD5Init(&md5);
MD5Update(&md5, pbzBuffer, iSize);
MD5Final(&md5);
_2LONG *tl = (_2LONG*) md5.digest;
printf("BLE 1\t\t %x %x %x %x\n", tl->_1, tl->_2, tl->_3, tl->_4);
MD5Init(&md5key);
MD5Update(&md5key, pbzKey, _ustrlen(pbzKey));
MD5Final(&md5key);
Blowfish_Init(&bf, md5key.digest, 16);
Blowfish_Encrypt(&bf, &tl->_1, &tl->_2);
Blowfish_Encrypt(&bf, &tl->_3, &tl->_4);
pSignature[0] = tl->_1;
pSignature[1] = tl->_2;
pSignature[2] = tl->_3;
pSignature[3] = tl->_4;
printf("BLE 2\t\t %x %x %x %x\n", pSignature[0], pSignature[1],
pSignature[2], pSignature[3]);
}
bool VerifyBuffer(unsigned char *pbzKey, unsigned char *pSignature,
unsigned int iSize, unsigned long *pBuffer)
{
BLOWFISH_CTX bf;
MD5_CTX md5, md5key;
bool bResult = false;
printf("BLD 1\t\t %x %x %x %x\n", pBuffer[0], pBuffer[1],
pBuffer[2], pBuffer[3]);
MD5Init(&md5key);
MD5Update(&md5key, pbzKey, _ustrlen(pbzKey));
MD5Final(&md5key);
Blowfish_Init(&bf, md5key.digest, 16);
Blowfish_Decrypt(&bf, &pBuffer[0], &pBuffer[1]);
Blowfish_Decrypt(&bf, &pBuffer[2], &pBuffer[3]);
printf("BLD 2\t\t %x %x %x %x\n", pBuffer[0], pBuffer[1],
pBuffer[2], pBuffer[3]);
MD5Init(&md5);
MD5Update(&md5, pSignature, iSize);
MD5Final(&md5);
_2LONG *tl = (_2LONG*) md5.digest;
printf("BLD 3\t\t %x %x %x %x\n", tl->_1, tl->_2, tl->_3, tl->_4);
if (tl->_1 == pBuffer[0] && tl->_2 == pBuffer[1] &&
tl->_3 == pBuffer[2] && tl->_4 == pBuffer[3])
bResult = true;
return bResult;
}
void main(void)
{
unsigned char bszBuffer[2] = {'A', 'B'};
unsigned long ulSig[4];
SignBuffer((unsigned char*)"key", bszBuffer, 2, ulSig);
printf("\n");
if (VerifyBuffer((unsigned char*)"key", bszBuffer, 2, ulSig))
printf("\nok");
else printf("\nerr");
}
I had made _ustrlen because i got tired of using casting for (unsigned char*), unless there is a different way?
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Hello!
It might only be me but it is not obvious (to me) where you are trying to do this conversion you are talking about, you should at least highlight the part of interest in your code so people who want to help don't have to study your whole program trying to grasp the way you think.
> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> "It doesn't work, fix it" does not qualify as a bug report. <
> Amazing what new features none of the programmers working on the project ever heard of you can learn about when reading what the marketing guys wrote about it. <
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BLE 2 f12b0ed9 782fae18 a87960ac f37b342e
is passed into VerifyBuffer, but when it is decrypted it doesnt match BLE 1 b0c66fb8 733df651 4c2d26de a9a0e334 when i pass a MD5 comparision from unsigned char *pSignature
hope that makes sense? it seems to lose data some how, not sure
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Hi:
I am new to FIX. I am using quickfix engine in c++ to create a initiator. The host is saying that they cannot see username and password in tag 553 or 554, that is why logon is not happening. I have gone through all documentation of QuickFix and also several other examples of it but could not find any solution. The following is the settings file parameters:
If anyone has worked on QuickFix in c++, I would really appreciate if someone can help me?
tradeclient.cfg
-----------------------
<br />
#default settings for sessions<br />
[DEFAULT]<br />
ConnectionType=initiator<br />
LogonTimeout=30<br />
ReconnectInterval=30<br />
ResetOnLogon=Y<br />
<br />
<br />
#INET Session<br />
[SESSION]<br />
BeginString=FIX.4.2<br />
SenderCompID=XXX<br />
SenderSubID=1<br />
TargetCompID=XXX<br />
StartDay=sunday<br />
EndDay=friday<br />
StartTime=07:00:00<br />
EndTime=21:00:00<br />
HeartBtInt=30<br />
CheckLatency=Y<br />
MaxLatency=240<br />
SocketConnectPort=XXX<br />
SocketConnectHost=XXXXX<br />
EncryptMethod=0<br />
UserName=XXX<br />
Password=XXXX<br />
#SessionQualifier=INET<br />
UseDataDictionary=Y<br />
DataDictionary=C:\Users\asarkar\Financial Programs\QuickFix\quickfix\spec\FIX42.xml<br />
FileStorePath=C:\Users\asarkar\Documents\Visual Studio 2010\Projects\FIX_TradeClient\Debug\<br />
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from distant memory, no, you cant do it like that ...
what you need to to is handle an Admin callback/message, and if that message is a logon message, you do a
some_message.setField(new Username("*****"));
some_message.setField(new Password("*****"));
thats as much as I remember - I did a quick google, and somewhere I found for the java version that was roughly the same
'g'
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Hi. I am sure this has been asked a few times but i cant find any clear code for this. i am using the curl classes to download data from a HTTP server, is there any ready code for requesting HTML and that the function returns that? (Not through a callback function)?
Thanks
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Not sure what cURL classes you're using as there's plenty kicking around but if you're using the easy interface: curl_easy_getinfo with a code of CURLINFO_RESPONSE_CODE will give you the response code for a given transfer. Or zero if the headers haven't been recieved yet.
Cheers,
Ash
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Through some standards an experience, I tried to put this Magic Packet application together.
However it doesn't wake up the machine, nor does the Wake On LAN tutorial on CP succeed in accomplishing the same task.
#include <winsock2.h>
#include <iostream>
using std::cout;
using std::cin;
using std::endl;
void main()
{
char MAC[13];
cout << "Enter MAC Address for Machine to wake up:" << endl;
cin >> MAC;
cout << "Waking up..." << endl;
char L = (char)255;
cout << L << endl;
WSADATA WS2Info;
if (!WSAStartup(MAKEWORD(2,2), &WS2Info))
{
SOCKET MagicPacket = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
if (MagicPacket != INVALID_SOCKET)
{
hostent *ResolveHost;
char* HostAddress = "";
ResolveHost = gethostbyname(HostAddress);
SOCKADDR_IN Host;
Host.sin_family = AF_INET;
Host.sin_port = 0;
Host.sin_addr.s_addr = *((unsigned long*)ResolveHost->h_addr);
short MACconv[6];
memset(MACconv, '\0', 6);
bool FirstDigit = true;
int Pos = 0;
for ( int i = 0; i < 12; i++)
{
switch(MAC[i])
{
case '0':
if (FirstDigit)
{
MACconv[Pos] = 00000000 | MACconv[Pos];
FirstDigit = false;
}
else
{
MACconv[Pos] = 00000000 | MACconv[Pos];
FirstDigit = true;
Pos += 1;
}
break;
case '1':
if (FirstDigit)
{
MACconv[Pos] = 00010000 | MACconv[Pos];
FirstDigit = false;
}
else
{
MACconv[Pos] = 00000001 | MACconv[Pos];
FirstDigit = true;
Pos += 1;
}
break;
case '2':
if (FirstDigit)
{
MACconv[Pos] = 00100000 | MACconv[Pos];
FirstDigit = false;
}
else
{
MACconv[Pos] = 00000010 | MACconv[Pos];
FirstDigit = true;
Pos += 1;
}
break;
case '3':
if (FirstDigit)
{
MACconv[Pos] = 00110000 | MACconv[Pos];
FirstDigit = false;
}
else
{
MACconv[Pos] = 00000011 | MACconv[Pos];
FirstDigit = true;
Pos += 1;
}
break;
case '4':
if (FirstDigit)
{
MACconv[Pos] = 01000000 | MACconv[Pos];
FirstDigit = false;
}
else
{
MACconv[Pos] = 00000100 | MACconv[Pos];
FirstDigit = true;
Pos += 1;
}
break;
case '5':
if (FirstDigit)
{
MACconv[Pos] = 00010000 | MACconv[Pos];
FirstDigit = false;
}
else
{
MACconv[Pos] = 00000001 | MACconv[Pos];
FirstDigit = true;
Pos += 1;
}
break;
case '6':
if (FirstDigit)
{
MACconv[Pos] = 01100000 | MACconv[Pos];
FirstDigit = false;
}
else
{
MACconv[Pos] = 00000110 | MACconv[Pos];
FirstDigit = true;
Pos += 1;
}
break;
case '7':
if (FirstDigit)
{
MACconv[Pos] = 01110000 | MACconv[Pos];
FirstDigit = false;
}
else
{
MACconv[Pos] = 00000111 | MACconv[Pos];
FirstDigit = true;
Pos += 1;
}
break;
case '8':
if (FirstDigit)
{
MACconv[Pos] = 10000000 | MACconv[Pos];
FirstDigit = false;
}
else
{
MACconv[Pos] = 00001000 | MACconv[Pos];
FirstDigit = true;
Pos += 1;
}
break;
case '9':
if (FirstDigit)
{
MACconv[Pos] = 10010000 | MACconv[Pos];
FirstDigit = false;
}
else
{
MACconv[Pos] = 00001001 | MACconv[Pos];
FirstDigit = true;
Pos += 1;
}
break;
case 'A':
if (FirstDigit)
{
MACconv[Pos] = 10100000 | MACconv[Pos];
FirstDigit = false;
}
else
{
MACconv[Pos] = 00001010 | MACconv[Pos];
FirstDigit = true;
Pos += 1;
}
break;
case 'B':
if (FirstDigit)
{
MACconv[Pos] = 10110000 | MACconv[Pos];
FirstDigit = false;
}
else
{
MACconv[Pos] = 00001011 | MACconv[Pos];
FirstDigit = true;
Pos += 1;
}
break;
case 'C':
if (FirstDigit)
{
MACconv[Pos] = 11000000 | MACconv[Pos];
FirstDigit = false;
}
else
{
MACconv[Pos] = 00001100 | MACconv[Pos];
FirstDigit = true;
Pos += 1;
}
break;
case 'D':
if (FirstDigit)
{
MACconv[Pos] = 11010000 | MACconv[Pos];
FirstDigit = false;
}
else
{
MACconv[Pos] = 00001101 | MACconv[Pos];
FirstDigit = true;
Pos += 1;
}
break;
case 'E':
if (FirstDigit)
{
MACconv[Pos] = 11100000 | MACconv[Pos];
FirstDigit = false;
}
else
{
MACconv[Pos] = 00001110 | MACconv[Pos];
FirstDigit = true;
Pos += 1;
}
break;
case 'F':
if (FirstDigit)
{
MACconv[Pos] = 11110000 | MACconv[Pos];
FirstDigit = false;
}
else
{
MACconv[Pos] = 00001111 | MACconv[Pos];
FirstDigit = true;
Pos += 1;
}
break;
}
}
short WakeUpMsg[103];
memset(WakeUpMsg, '\0', 103);
memset(WakeUpMsg, 255, 6);
memcpy(WakeUpMsg, MACconv, 6);
memcpy(WakeUpMsg, MACconv, 6);
memcpy(WakeUpMsg, MACconv, 6);
memcpy(WakeUpMsg, MACconv, 6);
memcpy(WakeUpMsg, MACconv, 6);
memcpy(WakeUpMsg, MACconv, 6);
memcpy(WakeUpMsg, MACconv, 6);
memcpy(WakeUpMsg, MACconv, 6);
memcpy(WakeUpMsg, MACconv, 6);
memcpy(WakeUpMsg, MACconv, 6);
memcpy(WakeUpMsg, MACconv, 6);
memcpy(WakeUpMsg, MACconv, 6);
memcpy(WakeUpMsg, MACconv, 6);
memcpy(WakeUpMsg, MACconv, 6);
memcpy(WakeUpMsg, MACconv, 6);
memcpy(WakeUpMsg, MACconv, 6);
sendto(MagicPacket, (char*)WakeUpMsg, 128, 0, (SOCKADDR *)&Host, sizeof(Host));
}
}
}
Code Free for Non Commercial Use!
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Fareed Rizkalla wrote: memcpy(WakeUpMsg, MACconv, 6);
memcpy(WakeUpMsg, MACconv, 6);
memcpy(WakeUpMsg, MACconv, 6);
memcpy(WakeUpMsg, MACconv, 6);
All these lines are repeatedly copying the first 6 bytes of MACconv to the first 6 bytes of WakeUpMsg; you need to use some form of index or offset to fill the packet correctly.
It's time for a new signature.
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Hi All,
1) I want to send some data to a C# Application which has WPF controls (like text box) in it.
2) I also want to read the data from the WPF control (text box) to the VC++ application.
I tried using SendMessage API, but I don’t know how to get the textbox handle.
I found UI Automation is one solution for this but I found examples for C# only. I couldn't find any examples on UI Automation for VC++.
Please provide me some input on this.
Thanks,
Joseph
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Joseph82 wrote: I tried using SendMessage API, but I don’t know how to get the textbox handle.
WPF controls don't have handles only window has a handle.If you would like to use SendMessage API you should consider using windows forms controls combined with WindowsFormsHost.See here how http://msdn.microsoft.com/en-us/library/ms742875.aspx[^]
Using automation is more difficult, but there's lots of samples just point "MFC automation samples" in google.
Life is a stage and we are all actors!
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Hi all,
We have a client/server (C/C++/MFC/Win32) application that historically has used an internal table for managing users/passwords/product permissions etc. We've had a request from a customer to manage these types of things via Active Directory and take advantage of Single Sign-on etc.
I know very little about Active Directory since we don't use it here in our office, but I've done a fair amount of reading and managed to set one up in a VM for testing purposes.
Questions:
1) Since much of our product depends on OUR UserID table and we have some customers that want to use AD , I'm thinking we should be importing account information FROM Active Directory periodically. Does this sound right?
2) When a user logs in - I should be authenticating the user through Active Directory and NOT our internal mechanism?
3) Does Active Directory have a means for me to define a list of permission options that the ADMIN can manage? ie: Add Record, Delete Record, Update Record, that I can check against when one of these operations are performed in our product.
4) I have found a lot of AD code in C# but, having a harder time finding stuff in C++. Anyone have any good examples?
Anything you could forward my way would be greatly appreciated.
Cheers.
Mike.
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The Active directory (AD) is an architecture where domains (containers of users groups, resources and access lists) derives each other hierarchically into forests and trust each other between forest. The way they do this depends on how the managers of your client organization organize their information system, and -ideally- the AD architecture either by domain derivation or trusteeship, can span the world.
Think to the AD as a "generalized DNS for users". You cannot download the entire DNS to get an IP address, hence you cannot pretend to download the AD.
You must instead query the AD.
You application should NOT contain any "user login". You simply should get who is the user actually on a machine by simply query proper OS API (GetUsername ... or similar, nor shure about it, but MSDN may help) and to decide if the user can do or not a given operation you must check if such a user is part or not a given user group (The API should be IsInRole ... or something similar).
The name of the groups corresponding to your app privileges, should be loaded by a config file (the domain administrator will typically place it in a read-only place) and should be defined by the domain admin itself.
This is a minimum way to start with. And is valid -as a concept- also for a stabdard LDAP server - non necessarily AD
2 bugs found.
> recompile ...
65534 bugs found.
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Thanks for your reply - much appreciated.
I'm finding lots of code related to group membership (IsInRole etc) for C#, but not a whole lot in Win32, any help?
Also, is there a way I can query for a list of users in the group?
Again, thanks alot for your reply.
M.
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Mike Doner wrote: I'm finding lots of code related to group membership (IsInRole etc) for C#, but not a whole lot in Win32
There is a chapter o the MS-SDK called "Security" that describe all the aspects, including "Authentication" and "Authorization", that also have sections bout C++. It's all about COM objects. That's why they have mostly C# wrapper: COM is natively marshaled into .net
give a look to http://msdn.microsoft.com/en-us/library/aa375769%28v=VS.85%29.aspx[^]
2 bugs found.
> recompile ...
65534 bugs found.
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Is INT_PTR available in VC++ 2010? Is it safe to use instead of int in places like getting return value from CDialog::DoModal() etc?
--
"Programming is an art that fights back!"
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Yes, the INT_PTR is available in VC++ 2010, and not only it's safe to use it as return value from calls like CDialog::DoModal() but it is strongly recommended! That type is defined as typedef int __w64 INT_PTR; this means that it is just an int: the __w64 keyword is an hint that the compiler uses to find 64-bit portability issues and warn about it.
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Yes it is! answer to second question is also Yeap
"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow
Never mind - my own stupidity is the source of every "problem" - Mixture
cheers,
Alok Gupta
VC Forum Q&A :- I/ IV
Support CRY- Child Relief and You
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I have a dialog.
I am displaying a messagebox with MB_APPMODAL. It comes over the dialog box (fine till now)
I am having one thread in background which updates dialog and make it top most but if message box is visible then I want messagebox to remain at top. So how to focus on that message box again. 
I am using AfxMessageBox to diaplay message.
Well a rough example will like. There are 2 buttons on dialog, 2 messageboxes are already shown. If I click on first button then it will put messagebox1 in foreground , if I click on button 2 then it will put messagebox2 in foreground. I don't want to re-create message box.
I am using AfxMessageBox to diaplay message.
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