by jirkadanek7:
Function NewEntity in
http://code.google.com/p/go/source/browse/openpgp/keys.go?repo=crypto#399 uses an
unexported constant defaultRSAKeyBits specifying the key length without the possibility
for the caller to provide a different value.
I expect to be able to be able to specify this value myself when calling the function.
Here is a StackOverflow question from somebody who had the same problem
http://stackoverflow.com/questions/15474334/openpgp-and-golang