Hello,
I need to implement CMAC message authentication according to NIST
Special Publication 800-38B. I try to use the CMAC module from the
Crypto++ library (version 5.6), but until now I did not succeed.
I first wrote a short test program with some test data as input, so I
can verify the output.
I use Visual studio 2003 and the program is made in C++.
The program compile is okay, but when I run it, the program stops at
the “SetKeyWithIV” the message generated by Visual Studio is:
"Unhandled exception at <address> in <programName>: Microsoft C++
exception:
CryptoPP::AlgorithmParametersBase::ParameterNotUsed@<address>"
I have tried several version but this issue keeps coming up.
This is the code:
#include "cmac.h"
USING_NAMESPACE(CryptoPP)
USING_NAMESPACE(std)
BOOL TestCMAC()
{
byte iv[16];
byte bKey[16];
byte bTestdata[8];
byte bTestDecr[8];
CMAC<AES > Cmac;
// fill bKey with test data
// fill iv with test data
// fill bTestdata with test data
Cmac.SetKeyWithIV(bKey, sizeof(bKey), iv, sizeoff(iv)); // Here
the exception comes up
Cmac.Update(bTestdata, 8);
return (TRUE);
}
Does anyone have an idea what I am doing wrong?
Ger
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