what if they have my sec key?

[Anonymous Remailer (austria)]

>> Having the secret key on my USB drive?

> Having the key on a USB drive is probably secure enough if you do not 
> take into account malicious software on the system you want to use it
> on. If you must assume that there  could be keyloggers/etc. be
> installed on the system (by other users or remote attackers), your
> best bet is probably the OpenPGP smartcard, which will keep your key safe.

Isn't the smartcard limited to 1024 bit keys? Do anyone know when a key
with enough storage for any practical key size will be ready?