All,
I'm working with the Windows COM library and trying to use the GethmacSha1 API function. I'm receiving the ycRETCODE_FAILED error code.
I've copy and pasted the DoChallengeResponse from
https://github.com/Yubico/yubico-window ... ubAuth.cpp into my my project and when I call it, it consistently returns false. The false return code is due to the call to GethmacSha1 failing with ycRETCODE_FAILED. The Windows COM library does not appear to be on github, so thats why I posting this message here.
I'm using Windows 10 64bit
I've tried both 32 and 64bit version of the COM library.
yubikey-client-API_x64-4.1.0.msi
yubikey-client-API_x86-4.1.0.msi
My code which is below checks to see if a device is present, gets the serial number, and then attempts to call the GethmacSha1 function.
Output:
Found YubiKey Serial#: 004bXXXX
Do challenge failed
Can anyone tell me what I'm doing wrong.
Thanks.
Code:
#include <Windows.h>
#include <iostream>
#include <sstream>
#include <string>
#include <iomanip>
#include "ykdef.h"
#import <YubiClientAPI.dll> no_namespace, named_guids
using namespace std;
IYubiClient* api;
bool DoChallengeResponse(__in BYTE* challenge, __out BYTE* response, __in DWORD len)
{
bool res = true;
variant_t va;
ostringstream os;
os << hex << setfill('0');
for (DWORD i = 0; i < len; i++) {
os << setw(2) << int(challenge[i]);
}
_bstr_t bstr(os.str().c_str());
va.bstrVal = bstr;
va.vt = VT_BSTR;
api->PutdataEncoding(ycENCODING_BYTE_ARRAY);
api->PutdataBuffer(va);
ycRETCODE ret = api->GethmacSha1(2, ycCALL_BLOCKING);
if (ret == ycRETCODE_OK) {
BYTE HUGEP *pb;
long lbound, hbound;
SafeArrayGetLBound(api->dataBuffer.parray, 1, &lbound);
SafeArrayGetUBound(api->dataBuffer.parray, 1, &hbound);
SafeArrayAccessData(api->dataBuffer.parray, (void **)&pb);
for (; lbound <= hbound; lbound++) {
*response++ = *pb++;
}
SafeArrayUnaccessData(api->dataBuffer.parray);
res = true;
}
else {
res = false;
}
return res;
}
int main()
{
CoInitializeEx(NULL, COINIT_MULTITHREADED);
HRESULT h = CoCreateInstance(CLSID_YubiClient, 0, CLSCTX_ALL, IID_IYubiClient, reinterpret_cast<void **>(&api));
if (FAILED(h)) {
CoUninitialize();
}
ycRETCODE ret = api->GetisInserted();
if (ret == ycRETCODE_NO_DEVICE)
{
cout << "No yubikey device found" << endl;
CoUninitialize();
return -1;
}
api->dataEncoding = ycENCODING::ycENCODING_UINT32;
ret = api->GetreadSerial(ycCALL_MODE::ycCALL_BLOCKING);
cout << "Found YubiKey Serial#: " << setw(8) << setfill('0') << hex << api->dataBuffer.intVal << endl;
DWORD len = 64;
BYTE challenge[128];
BYTE response[128];
memset(challenge, 0, sizeof(challenge));
memset(response, 0, sizeof(response));
BCryptGenRandom(NULL, challenge, len, BCRYPT_USE_SYSTEM_PREFERRED_RNG);
if (DoChallengeResponse(challenge, response, 63))
{
cout << "Do challange worked" << endl;
}
else
{
cout << "Do challenge failed" << endl;
}
return 0;
}
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