This does not demonstrate that the RSA keys are as well distributed, but it does generate some confidence that the key generation methods of PGP are not very broken. Testing for RSA generation would be more difficult, since there are some practical difficulties in getting a large sample of RSA private keys.

True but do not need private keys, just public ones (one to one relation), should be able to get a large sample (20,000 in one place did I hear ?) of those. Warmly, Padgett