Problem generating RSA key pairs

[Jean-Pierre Parent]

Hi folks,

I've been trying to generate RSA key pairs. To do this I looked at the example 
provided in Denis Bider's Crypto++ User Guide. The following:

#include "rsa.h"
#include "osrng.h"

using namespace CryptoPP;
using namespace std;

int main() {
        // InvertibleRSAFunction is used directly only because the private key
        // won't actually be used to perform any cryptographic operation;
        // otherwise, an appropriate typedef'ed type from rsa.h would have been used.
        AutoSeededRandomPool rng;
        InvertibleRSAFunction privkey(rng,1024);

        //...

        return 0;
}
// Taken from Denis Bider's user guide in the rsa.h section

...generates this error:
RSA.cpp: In function `int main()':
RSA.cpp:15: no matching function for call to 
`CryptoPP::InvertibleRSAFunction::InvertibleRSAFunction 
(CryptoPP::AutoSeededRandomPool &, int)'
rsa.h:99: candidates are: 
CryptoPP::InvertibleRSAFunction::InvertibleRSAFunction(const 
CryptoPP::InvertibleRSAFunction &)
rsa.h:99:                 
CryptoPP::InvertibleRSAFunction::InvertibleRSAFunction()

It seems that there is no constructor available for these arguments. Perhaps 
the user guide is getting old with the release of version 5.0 of 
Crypto++5.0??

Anyway I've tried the following instead:

#include "rsa.h"
#include "osrng.h"

using namespace CryptoPP;
using namespace std;

int main() {
        AutoSeededRandomPool rng;
        InvertibleRSAFunction privkey;  // Just use the default constructor
        privkey.Initialize(rng,1024,17);        // Use the Initialize method

        return 0;
}

Now I thought this would work but then I get this error:
RSA.cpp: In function `int main()':
RSA.cpp:16: request for member `Initialize' in `privkey', which is of 
non-aggregate type `CryptoPP::InvertibleRSAFunction ()()'

Any hint on what I am doing wrong?

I compiled both samples using:
g++ -c RSA.cpp -o RSA.o
g++ -o RSA RSA.o -L. -lcryptopp

compiler: g++ 2.95.4
uname: Linux zephyr 2.4.19 #1 Thu Oct 24 19:54:10 EDT 2002 i686 AMD Athlon(TM) 
XP 2000+ AuthenticAMD GNU/Linux

Thanks,
Jean-Pierre Parent